Moving repo to github

- Remove the need for -maes, silence warning about ignored option on ARM macs
- Set -mmacos-version-min when building wasm3 to match that of the platform layer and runtime

.clang-format

@@ -24,7 +24,6 @@ BraceWrapping:
   AfterEnum: true
   AfterFunction: true
   AfterNamespace: true
-  AfterObjCDeclaration: true
   AfterStruct: true
   AfterObjCDeclaration: true
   AfterUnion: true

.gitignore

@@ -14,6 +14,7 @@ build
 *.wasm
 *.app
 *.dylib
+*.a
 
 Debug/*
 
@@ -39,4 +40,4 @@ scripts/files
 /ext
 src/ext/angle
 
-sketches/*/bin
+sketches/*/bin

FUNDING.yml

@@ -0,0 +1,2 @@
+github: orca-app
+custom: "https://orca-app.dev/sponsor.html"

LICENSE.txt

@@ -1,678 +1,207 @@
-Orca
+                                    Orca
 
-Copyright (C) 2023 Martin Fouilleul and the Orca project contributors
+Copyright (C) 2023 Martin Fouilleul
 
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU Affero General Public License as
-published by the Free Software Foundation version 3, with additional
-terms under section 7 of the GNU Affero General Public License version
-3, as published at the end of this document.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU Affero General Public License for more details.
+Orca is distributed under the MIT license or the Apache License version 2.0,
+at your option.
 
 -------------------------------------------------------------------------------
-                               AGPLv3 LICENSE
+
+                                MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
 -------------------------------------------------------------------------------
 
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-of the GNU General Public License that is incorporated pursuant to the
-following paragraph.
-
-  Notwithstanding any other provision of this License, you have
-permission to link or combine any covered work with a work licensed
-under version 3 of the GNU General Public License into a single
-combined work, and to convey the resulting work.  The terms of this
-License will continue to apply to the part which is the covered work,
-but the work with which it is combined will remain governed by version
-3 of the GNU General Public License.
-
-  14. Revised Versions of this License.
-
-  The Free Software Foundation may publish revised and/or new versions of
-the GNU Affero General Public License from time to time.  Such new versions
-will be similar in spirit to the present version, but may differ in detail to
-address new problems or concerns.
-
-  Each version is given a distinguishing version number.  If the
-Program specifies that a certain numbered version of the GNU Affero General
-Public License "or any later version" applies to it, you have the
-option of following the terms and conditions either of that numbered
-version or of any later version published by the Free Software
-Foundation.  If the Program does not specify a version number of the
-GNU Affero General Public License, you may choose any version ever published
-by the Free Software Foundation.
-
-  If the Program specifies that a proxy can decide which future
-versions of the GNU Affero General Public License can be used, that proxy's
-public statement of acceptance of a version permanently authorizes you
-to choose that version for the Program.
-
-  Later license versions may give you additional or different
-permissions.  However, no additional obligations are imposed on any
-author or copyright holder as a result of your choosing to follow a
-later version.
-
-  15. Disclaimer of Warranty.
-
-  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
-APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
-HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
-OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
-THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
-IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
-ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
-
-  16. Limitation of Liability.
-
-  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
-THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
-GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
-USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
-DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
-PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
-EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGES.
-
-  17. Interpretation of Sections 15 and 16.
-
-  If the disclaimer of warranty and limitation of liability provided
-above cannot be given local legal effect according to their terms,
-reviewing courts shall apply local law that most closely approximates
-an absolute waiver of all civil liability in connection with the
-Program, unless a warranty or assumption of liability accompanies a
-copy of the Program in return for a fee.
-
-                     END OF TERMS AND CONDITIONS
-
---------------------------------------------------------------------------------
-                          ADDITIONAL TERMS
---------------------------------------------------------------------------------
-
-1. Pursuant to section 7(b) of the AGPLv3, we require the preservation of the legal
-notices, copyright notices and author attributions in the program and in its
-documentation and in the Appropriate Legal Notices displayed by works containing
-it.
-
-2. Pursuant to Section 7(c) of the AGPLv3, we require that modified versions of the
-material should be marked in a reasonable way as different from the official
-version.
-
-Any modified material being redistributed must include a prominent and conveniently
-accessible feature for the display of a Modified Material Notice including the statement
-"This program is using a modified version of the Orca Runtime version VERSION_NUMBER
-released on RELEASE_DATE.
-
-The string VERSION_NUMBER should be replaced with the exact version number of
-the Program on which the modified material is based.
-The string RELEASE_DATE should be replaced with the full date of the release of
-the version VERSION_NUMBER of the Program on which the
-modified material is based.
-
-The Modified Material Notice must be clearly visible with size of the fonts
-and icons proportionate to the user interface being used.
-
-The Modified Material Notice must be in the same language of the user interface.
-
-3. Additional permission for WebAssembly modules used by the Program.
-The Program works by loading and running WebAssembly modules written by third parties.
-To make this work, portions of the Program must be compiled into these WebAssembly modules,
-making them covered work under the terms of this license.
-
-As an additional permission, WebAssembly modules including unmodified portions of
-the Program to the sole purpose of being bundled with and run by an unmodified version
-of the Program can be distributed under the terms of their author's choice, without being
-bound by the requirements of this license. This permission does not extend to modifications
-of the Program itself or its development libraries.
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
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+
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+   otherwise, or (ii) ownership of fifty percent (50%) or more of the
+   outstanding shares, or (iii) beneficial ownership of such entity.
+
+   "You" (or "Your") shall mean an individual or Legal Entity
+   exercising permissions granted by this License.
+
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+   including but not limited to software source code, documentation
+   source, and configuration files.
+
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+   transformation or translation of a Source form, including but
+   not limited to compiled object code, generated documentation,
+   and conversions to other media types.
+
+   "Work" shall mean the work of authorship, whether in Source or
+   Object form, made available under the License, as indicated by a
+   copyright notice that is included in or attached to the work
+   (an example is provided in the Appendix below).
+
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+   form, that is based on (or derived from) the Work and for which the
+   editorial revisions, annotations, elaborations, or other modifications
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+   of this License, Derivative Works shall not include works that remain
+   separable from, or merely link (or bind by name) to the interfaces of,
+   the Work and Derivative Works thereof.
+
+   "Contribution" shall mean any work of authorship, including
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+   "Contributor" shall mean Licensor and any individual or Legal Entity
+   on behalf of whom a Contribution has been received by Licensor and
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+
+2. Grant of Copyright License. Subject to the terms and conditions of
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+   the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+   names, trademarks, service marks, or product names of the Licensor,
+   except as required for reasonable and customary use in describing the
+   origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+   implied, including, without limitation, any warranties or conditions
+   of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+   PARTICULAR PURPOSE. You are solely responsible for determining the
+   appropriateness of using or redistributing the Work and assume any
+   risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
+   result of this License or out of the use or inability to use the
+   Work (including but not limited to damages for loss of goodwill,
+   work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses), even if such Contributor
+   has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+   the Work or Derivative Works thereof, You may choose to offer,
+   and charge a fee for, acceptance of support, warranty, indemnity,
+   or other liability obligations and/or rights consistent with this
+   License. However, in accepting such obligations, You may act only
+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS

Readme.md

@@ -1,134 +1,2 @@
-------
-**DISCLAIMER: This project is very much a Work In Progress. We are making it accessible in this very early state so that participants in the [2023 Wheel Reinvention Jam](https://handmade.network/jam/2023) can try it out and possibly use it as their jamming platform. Expect bugs, missing and/or incomplete features, unstable APIs, and sparse documentation. Some current issues might be a show stopper for you, so make sure you can build and run the sample apps before jumping in.**
+**This repository is not used anymore. Development of Orca was moved here: [https://github.com/orca-app/orca](https://github.com/orca-app/orca)**
 
-**If you do choose to try out Orca anyway, thank you! We'll do our best to answer your questions, and we'd really appreciate your feedback!**
-
-------
-
-# Orca
-
-Orca is a development platform and runtime environment for cross-platform, sandboxed graphical WebAssembly applications. In this early MVP you can:
-
-- Receive mouse and keyboard input.
-- Draw paths, images and text using a 2D vector graphics API.
-- Draw 2D/3D graphics using OpenGL ES 3.1 (minus a few features)
-- Build user interfaces using our UI API and default widgets.
-- Read and write files using a capability-based API.
-
-To learn more about the project and its goals, read the [announcement post](https://orca-app.dev/posts/230607/orca_announcement.html).
-
-## Installing
-
-The Orca command-line tools must be installed to your system in order to use them in your own projects.
-
-**At this early stage, you must build Orca yourself - in the future, this installation process will be streamlined.**
-
-### Requirements
-
-- Windows or Mac (Linux is not yet supported)
-- [Python 3](https://www.python.org/) (for command line tools)
-- Clang
-	- **Windows users:** `clang` can be installed via the Visual Studio installer. Search for "C++ Clang Compiler".
-	- **Mac users:** Apple's built-in `clang` does not support WebAssembly. We recommend installing `clang` via [Homebrew](https://brew.sh/) with `brew install clang`.
-- MSVC (Visual Studio 2022 17.5 or newer) (Windows only)
-	- This can be installed through the [Visual Studio Community](https://visualstudio.microsoft.com/) installer.
-	- Please note the version requirement! Orca requires C11 atomics, which were only added to MSVC in late 2022.
-
-### Installation instructions
-
-Clone the repo, then `cd` into the `orca` directory:
-
-```
-git clone git@git.handmade.network:hmn/orca.git
-cd orca
-```
-
-Build the Orca runtime:
-
-```
-./orca dev build-runtime
-```
-
-Install the Orca dev tools. If on Windows, the tool can automatically add `orca` to your PATH. Otherwise, you must manually add the Orca install directory to your PATH, e.g. by updating `.zshrc` or `.bashrc`.
-
-```
-./orca dev install
-```
-
-Finally, verify that Orca is successfully installed by running the `orca version` command. Note the lack of `./`!
-
-```
-orca version
-```
-
-If you encounter any errors, see the FAQ below.
-
-Once the `orca` tools are installed and on your PATH, you can use them from anywhere.
-
-### Building the sample Orca apps
-
-The `samples` directory contains several sample apps that demonstrate various Orca features. To build one, `cd` to a sample project's directory and run its build script. For example, for the `breakout` sample:
-
-```
-cd samples/breakout
-# Windows
-build.bat
-# Mac
-./build.sh
-```
-
-On Windows this creates a `Breakout` directory in `samples/breakout`. You can launch the app by running `Breakout/bin/Breakout.exe`. On macOS this creates a `Breakout.app` bundle in `samples/breakout` that you can double-click to run.
-
-## Writing an Orca app
-
-Orca apps are WebAssembly modules that use the Orca APIs. The process for creating an Orca application is:
-
-1. Compile a WebAssembly module using your language and toolchain of choice.
-2. Bundle the WebAssembly module into a native executable using the Orca command-line tools.
-
-For a more thorough overview, please read the [Quick Start Guide](./doc/QuickStart.md), which will walk you through building a simple application.
-
-The following additional resources may also help you familiarize yourself with Orca and its APIs:
-
-- The [samples folder](./samples) contains sample applications that show various aspects of the Orca API and core library:
-	- [`breakout`](./samples/breakout) is a small breakout game making use of the vector graphics API.
-	- [`clock`](./samples/clock) is a simple clock showcasing vector graphics and the time API.
-	- [`triangle`](./samples/triangle) shows how to draw a spinning triangle using the GLES API.
-	- [`fluid`](./samples/fluid) is a fluid simulation using a more complex GLES setup.
-	- [`ui`](./samples/ui) showcases the UI API and Orca's default UI widgets.  
-- The [API Cheatsheets](./doc/cheatsheets) provide a list of Orca API functions, grouped by topic.
-
-## FAQ
-
-**What platforms does Orca support?**
-
-We currently support Windows 10 and up, and macOS 10.15 and up. We plan to expand to more platforms in the future.
-
-**What languages can I use with Orca?**
-
-In principle, you can use any language and toolchain that can produce a WebAssembly module and bind to the Orca APIs. However, several important parts of Orca, such as the UI, are provided as part of the core library, which must be compiled to WebAssembly with your app, and is written in C. Therefore, at this early stage, it may be difficult to use any language other than C.
-
-C-style C++ is possible but requires compiling the core library in C as a separate object file, and then adding that object to your compile command when building your app.
-
-We're currently working with contributors to add support for Odin and Zig, and we look forward to expanding the number of officially-supported languages in the future. 
-
-**Which WebAssembly features does Orca support?**
-
-We currently use [wasm3](https://github.com/wasm3/wasm3) for our interpreter. We therefore support whatever features wasm3 supports. In practice this means all WebAssembly 1.0 features, bulk memory operations, and a couple other small features.
-
-**I am getting errors about atomics when building the runtime on Windows.**
-
-Please ensure that you have the latest version of Visual Studio and MSVC installed. The Orca runtime requires the use of C11 atomics, which were not added to MSVC until late 2022.
-
-**I am getting errors saying that `orca` is not found.**
-
-Please ensure that you have installed Orca to your system per the installation instructions above. Please also ensure that the Orca install directory is on your PATH. The installation path is printed when running `./orca dev install`.
-
-## License
-
-Orca is distributed under the terms of the GNU Affero General Public License version 3, with additional terms in accordance with section 7 of AGPLv3. These additional terms ensure that:
-
-- Modified versions of Orca must reasonably inform users that they are modified.
-- You can distribute your application's WebAssembly modules under the terms of your choice, and are not required to license them under the terms of the AGPLv3.
-
-Copyright and License details can be found in [LICENSE.txt](./LICENSE.txt)

doc/QuickStart.md

@@ -207,10 +207,10 @@ You can unconditionally abort the application with a message box using `OC_ABORT
 
 For more examples of how to use Orca APIs, you can look at the other [sample apps](../samples):
 
-- [breakout](./samples/breakout) is a mini breakout game making use of the vector graphics API. It demonstrates using input and drawing images.
-- [triangle](./samples/triangle) shows how to draw a spining triangle using the GLES API.
-- [fluid](./samples/fluid) is a fluid simulation using a more complex GLES setup.
-- [ui](./samples/ui) showcases the UI API and Orca's default UI widgets.
+- [breakout](../samples/breakout) is a mini breakout game making use of the vector graphics API. It demonstrates using input and drawing images.
+- [triangle](../samples/triangle) shows how to draw a spining triangle using the GLES API.
+- [fluid](../samples/fluid) is a fluid simulation using a more complex GLES setup.
+- [ui](../samples/ui) showcases the UI API and Orca's default UI widgets.
 
 For a list of Orca APIs, you can look at the [API cheatsheets](../doc/cheatsheets).
 

doc/cheatsheets/cheatsheet_app.h

@@ -16,8 +16,8 @@ void oc_on_mouse_enter(void);
 void oc_on_mouse_leave(void);
 void oc_on_mouse_move(f32 x, f32 y, f32 deltaX, f32 deltaY);
 void oc_on_mouse_wheel(f32 deltaX, f32 deltaY);
-void oc_on_key_down(oc_key_code key);
-void oc_on_key_up(oc_key_code key);
+void oc_on_key_down(oc_scan_code scan, oc_key_code key);
+void oc_on_key_up(oc_scan_code scan, oc_key_code key);
 void oc_on_frame_refresh(void);
 void oc_on_resize(f32 width, f32 height);
 void oc_on_raw_event(oc_event* event);

doc/cheatsheets/cheatsheet_graphics.h

@@ -117,21 +117,21 @@ oc_font oc_font_nil(void);
 bool oc_font_is_nil(oc_font font);
 
 oc_font oc_font_create_from_memory(oc_str8 mem, u32 rangeCount, oc_unicode_range* ranges);
+oc_font oc_font_create_from_file(oc_file file, u32 rangeCount, oc_unicode_range* ranges);
+oc_font oc_font_create_from_path(oc_str8 path, u32 rangeCount, oc_unicode_range* ranges);
+
 void oc_font_destroy(oc_font font);
 
-oc_font_extents oc_font_get_extents(oc_font font);
-oc_font_extents oc_font_get_scaled_extents(oc_font font, f32 emSize);
+oc_str32 oc_font_get_glyph_indices(oc_font font, oc_str32 codePoints, oc_str32 backing);
+oc_str32 oc_font_push_glyph_indices(oc_arena* arena, oc_font font, oc_str32 codePoints);
+u32 oc_font_get_glyph_index(oc_font font, oc_utf32 codePoint);
+
+oc_font_metrics oc_font_get_metrics(oc_font font, f32 emSize);
+oc_font_metrics oc_font_get_metrics_unscaled(oc_font font);
 f32 oc_font_get_scale_for_em_pixels(oc_font font, f32 emSize);
 
-u32 oc_font_get_glyph_index(oc_font font, oc_utf32 codePoint);
-oc_str32 oc_font_get_glyph_indices(oc_font font, oc_str32 codePoints, oc_str32 backing);
-oc_str32 oc_font_push_glyph_indices(oc_font font, oc_arena* arena, oc_str32 codePoints);
-
-int oc_font_get_codepoint_extents(oc_font font, oc_utf32 codePoint, oc_text_extents* outExtents);
-int oc_font_get_glyph_extents(oc_font font, oc_str32 glyphIndices, oc_text_extents* outExtents);
-
-oc_rect oc_text_bounding_box_utf32(oc_font font, f32 fontSize, oc_str32 text);
-oc_rect oc_text_bounding_box(oc_font font, f32 fontSize, oc_str8 text);
+oc_text_metrics oc_font_text_metrics_utf32(oc_font font, f32 fontSize, oc_str32 codepoints);
+oc_text_metrics oc_font_text_metrics(oc_font font, f32 fontSize, oc_str8 text);
 
 //------------------------------------------------------------------------------------------
 // images
@@ -142,7 +142,8 @@ bool oc_image_is_nil(oc_image a);
 oc_image oc_image_create(oc_surface surface, u32 width, u32 height);
 oc_image oc_image_create_from_rgba8(oc_surface surface, u32 width, u32 height, u8* pixels);
 oc_image oc_image_create_from_memory(oc_surface surface, oc_str8 mem, bool flip);
-oc_image oc_image_create_from_file(oc_surface surface, oc_str8 path, bool flip);
+oc_image oc_image_create_from_file(oc_surface surface, oc_file file, bool flip);
+oc_image oc_image_create_from_path(oc_surface surface, oc_str8 path, bool flip);
 
 void oc_image_destroy(oc_image image);
 
@@ -158,6 +159,8 @@ oc_rect oc_rect_atlas_alloc(oc_rect_atlas* atlas, i32 width, i32 height);
 void oc_rect_atlas_recycle(oc_rect_atlas* atlas, oc_rect rect);
 
 oc_image_region oc_image_atlas_alloc_from_rgba8(oc_rect_atlas* atlas, oc_image backingImage, u32 width, u32 height, u8* pixels);
-oc_image_region oc_image_atlas_alloc_from_data(oc_rect_atlas* atlas, oc_image backingImage, oc_str8 data, bool flip);
-oc_image_region oc_image_atlas_alloc_from_file(oc_rect_atlas* atlas, oc_image backingImage, oc_str8 path, bool flip);
+oc_image_region oc_image_atlas_alloc_from_memory(oc_rect_atlas* atlas, oc_image backingImage, oc_str8 mem, bool flip);
+oc_image_region oc_image_atlas_alloc_from_file(oc_rect_atlas* atlas, oc_image backingImage, oc_file file, bool flip);
+oc_image_region oc_image_atlas_alloc_from_path(oc_rect_atlas* atlas, oc_image backingImage, oc_str8 path, bool flip);
+
 void oc_image_atlas_recycle(oc_rect_atlas* atlas, oc_image_region imageRgn);

orca

@@ -7,10 +7,17 @@ import os
 import sys
 
 
+MAJOR, MINOR = 3, 8
+
 if __name__ != "__main__":
     print("why are you importing the orca command-line tool as a Python module, you absolute goofball")
     exit(1)
 
+if sys.version_info.major < MAJOR or sys.version_info.minor < MINOR:
+    print("Your Python version is too old.")
+    print("Orca requires version {}.{}, but you have version {}.{}.".format(MAJOR, MINOR, sys.version_info.major, sys.version_info.minor))
+    exit(1)
+
 
 # If you modify this, be sure to modify the version in scripts/dev.py as well.
 def check_if_source():

orca.bat

@@ -3,5 +3,5 @@
 rem Get the directory of this batch script
 set "script_dir=%~dp0"
 
-python3 "%script_dir%orca" %*
+python "%script_dir%orca" %*
 exit /b %errorlevel%

samples/breakout/build.bat

@@ -1,9 +1,21 @@
 @echo off
+setlocal enabledelayedexpansion
+
+:: The following code checks if you have the necessary programs to compile the samples.
+:: This code exists to improve the experience of first-time Orca users and can
+:: be safely deleted in your own projects if you wish.
+if exist "..\..\scripts\sample_build_check.py" (
+       python ..\..\scripts\sample_build_check.py
+       if !ERRORLEVEL! neq 0 exit /b 1
+) else (
+       echo Could not check if you have the necessary tools to build the Orca samples.
+       echo If you have copied this script to your own project, you can delete this code.
+)
 
 set ORCA_DIR=..\..
 set STDLIB_DIR=%ORCA_DIR%\src\libc-shim
 
-:: compile wasm module
+:: common flags to build wasm modules
 set wasmFlags=--target=wasm32^
        --no-standard-libraries ^
        -mbulk-memory ^
@@ -15,7 +27,13 @@ set wasmFlags=--target=wasm32^
        -I%ORCA_DIR%\src ^
        -I%ORCA_DIR%\src\ext
 
-clang %wasmFlags% -o .\module.wasm %ORCA_DIR%\src\orca.c %STDLIB_DIR%\src\*.c src\main.c
+:: build orca core as wasm module
+clang %wasmFlags% -Wl,--relocatable -o .\liborca.a %ORCA_DIR%\src\orca.c %ORCA_DIR%\src\libc-shim\src\*.c
 IF %ERRORLEVEL% NEQ 0 EXIT /B %ERRORLEVEL%
 
+:: build sample as wasm module and link it with the orca module
+clang %wasmFlags% -L . -lorca -o module.wasm src/main.c
+IF %ERRORLEVEL% NEQ 0 EXIT /B %ERRORLEVEL%
+
+:: create app directory and copy files into it
 orca bundle --orca-dir %ORCA_DIR% --name Breakout --icon icon.png --resource-dir data module.wasm

samples/breakout/build.sh

@@ -2,18 +2,20 @@
 
 set -euo pipefail
 
-if [[ -x /usr/local/opt/llvm/bin/clang ]]; then
-  CLANG=/usr/local/opt/llvm/bin/clang
-elif [[ -x /opt/homebrew/opt/llvm/bin/clang ]]; then
-  CLANG=/opt/homebrew/opt/llvm/bin/clang
+# The following code checks if you have the necessary programs to compile the samples.
+# This code exists to improve the experience of first-time Orca users and can
+# be safely deleted in your own projects if you wish.
+if [ -f ../../scripts/sample_build_check.py ]; then
+  python3 ../../scripts/sample_build_check.py
 else
-  echo "Could not find Homebrew clang; this script will probably not work."
-  CLANG=clang
+  echo "Could not check if you have the necessary tools to build the Orca samples."
+  echo "If you have copied this script to your own project, you can delete this code."
 fi
 
 ORCA_DIR=../..
 STDLIB_DIR=$ORCA_DIR/src/libc-shim
 
+# common flags to build wasm modules
 wasmFlags="--target=wasm32 \
   --no-standard-libraries \
   -mbulk-memory \
@@ -25,6 +27,11 @@ wasmFlags="--target=wasm32 \
   -I $ORCA_DIR/src \
   -I $ORCA_DIR/src/ext"
 
-$CLANG $wasmFlags -o ./module.wasm $ORCA_DIR/src/orca.c $STDLIB_DIR/src/*.c src/main.c
+# build orca core as wasm module
+clang $wasmFlags -Wl,--relocatable -o ./liborca.a $ORCA_DIR/src/orca.c $STDLIB_DIR/src/*.c
 
+# build sample as wasm module and link it with the orca module
+clang $wasmFlags -L . -lorca -o module.wasm src/main.c
+
+# create app directory and copy files into it
 orca bundle --orca-dir $ORCA_DIR --name Breakout --icon icon.png --resource-dir data module.wasm

samples/clock/build.bat

@@ -1,9 +1,21 @@
 @echo off
+setlocal enabledelayedexpansion
+
+:: The following code checks if you have the necessary programs to compile the samples.
+:: This code exists to improve the experience of first-time Orca users and can
+:: be safely deleted in your own projects if you wish.
+if exist "..\..\scripts\sample_build_check.py" (
+       python ..\..\scripts\sample_build_check.py
+       if !ERRORLEVEL! neq 0 exit /b 1
+) else (
+       echo Could not check if you have the necessary tools to build the Orca samples.
+       echo If you have copied this script to your own project, you can delete this code.
+)
 
 set ORCA_DIR=..\..
 set STDLIB_DIR=%ORCA_DIR%\src\libc-shim
 
-:: compile wasm module
+:: common flags to build wasm modules
 set wasmFlags=--target=wasm32^
        --no-standard-libraries ^
        -mbulk-memory ^
@@ -15,7 +27,13 @@ set wasmFlags=--target=wasm32^
        -I%ORCA_DIR%\src ^
        -I%ORCA_DIR%\src\ext
 
-clang %wasmFlags% -o .\module.wasm %ORCA_DIR%\src\orca.c %STDLIB_DIR%\src\*.c src\main.c
+:: build orca core as wasm module
+clang %wasmFlags% -Wl,--relocatable -o .\liborca.a %ORCA_DIR%\src\orca.c %ORCA_DIR%\src\libc-shim\src\*.c
 IF %ERRORLEVEL% NEQ 0 EXIT /B %ERRORLEVEL%
 
+:: build sample as wasm module and link it with the orca module
+clang %wasmFlags% -L . -lorca -o module.wasm src/main.c
+IF %ERRORLEVEL% NEQ 0 EXIT /B %ERRORLEVEL%
+
+:: create app directory and copy files into it
 orca bundle --orca-dir %ORCA_DIR% --name Clock --icon icon.png --resource-dir data module.wasm

samples/clock/build.sh

@@ -2,18 +2,20 @@
 
 set -euo pipefail
 
-if [[ -x /usr/local/opt/llvm/bin/clang ]]; then
-  CLANG=/usr/local/opt/llvm/bin/clang
-elif [[ -x /opt/homebrew/opt/llvm/bin/clang ]]; then
-  CLANG=/opt/homebrew/opt/llvm/bin/clang
+# The following code checks if you have the necessary programs to compile the samples.
+# This code exists to improve the experience of first-time Orca users and can
+# be safely deleted in your own projects if you wish.
+if [ -f ../../scripts/sample_build_check.py ]; then
+  python3 ../../scripts/sample_build_check.py
 else
-  echo "Could not find Homebrew clang; this script will probably not work."
-  CLANG=clang
+  echo "Could not check if you have the necessary tools to build the Orca samples."
+  echo "If you have copied this script to your own project, you can delete this code."
 fi
 
 ORCA_DIR=../..
 STDLIB_DIR=$ORCA_DIR/src/libc-shim
 
+# common flags to build wasm modules
 wasmFlags="--target=wasm32 \
   --no-standard-libraries \
   -mbulk-memory \
@@ -25,6 +27,11 @@ wasmFlags="--target=wasm32 \
   -I $ORCA_DIR/src \
   -I $ORCA_DIR/src/ext"
 
-$CLANG $wasmFlags -o ./module.wasm $ORCA_DIR/src/orca.c $STDLIB_DIR/src/*.c src/main.c
+# build orca core as wasm module
+clang $wasmFlags -Wl,--relocatable -o ./liborca.a $ORCA_DIR/src/orca.c $STDLIB_DIR/src/*.c
 
+# build sample as wasm module and link it with the orca module
+clang $wasmFlags -L . -lorca -o module.wasm src/main.c
+
+# create app directory and copy files into it
 orca bundle --orca-dir $ORCA_DIR --name Clock --icon icon.png --resource-dir data module.wasm

samples/fluid/build.bat

@@ -1,9 +1,21 @@
 @echo off
+setlocal enabledelayedexpansion
+
+:: The following code checks if you have the necessary programs to compile the samples.
+:: This code exists to improve the experience of first-time Orca users and can
+:: be safely deleted in your own projects if you wish.
+if exist "..\..\scripts\sample_build_check.py" (
+       python ..\..\scripts\sample_build_check.py
+       if !ERRORLEVEL! neq 0 exit /b 1
+) else (
+       echo Could not check if you have the necessary tools to build the Orca samples.
+       echo If you have copied this script to your own project, you can delete this code.
+)
 
 set ORCA_DIR=..\..
 set STDLIB_DIR=%ORCA_DIR%\src\libc-shim
 
-:: compile wasm module
+:: common flags to build wasm modules
 set wasmFlags=--target=wasm32^
        --no-standard-libraries ^
        -mbulk-memory ^
@@ -15,6 +27,10 @@ set wasmFlags=--target=wasm32^
        -I%ORCA_DIR%\src ^
        -I%ORCA_DIR%\src\ext
 
+:: build orca core as wasm module
+clang %wasmFlags% -Wl,--relocatable -o .\liborca.a %ORCA_DIR%\src\orca.c %ORCA_DIR%\src\libc-shim\src\*.c
+IF %ERRORLEVEL% NEQ 0 EXIT /B %ERRORLEVEL%
+
 set shaders=src/shaders/advect.glsl^
 	src/shaders/blit_div_fragment.glsl^
 	src/shaders/blit_div_vertex.glsl^
@@ -30,10 +46,12 @@ set shaders=src/shaders/advect.glsl^
 	src/shaders/subtract_pressure.glsl
 
 
-call python3 ../../scripts/embed_text_files.py --prefix=glsl_ --output src/glsl_shaders.h %shaders%
+call python ../../scripts/embed_text_files.py --prefix=glsl_ --output src/glsl_shaders.h %shaders%
+if !ERRORLEVEL! neq 0 exit /b !ERRORLEVEL!
+
+:: build sample as wasm module and link it with the orca module
+clang %wasmFlags% -L . -lorca -o .\module.wasm src\main.c
 IF %ERRORLEVEL% NEQ 0 EXIT /B %ERRORLEVEL%
 
-clang %wasmFlags% -o .\module.wasm %ORCA_DIR%\src\orca.c %STDLIB_DIR%\src\*.c src\main.c
-IF %ERRORLEVEL% NEQ 0 EXIT /B %ERRORLEVEL%
-
-orca bundle --orca-dir %ORCA_DIR% --name Fluid --icon icon.png module.wasm
+:: create app directory and copy files into it
+orca bundle --orca-dir %ORCA_DIR% --name Fluid --icon icon.png module.wasm

samples/fluid/build.sh

@@ -2,13 +2,14 @@
 
 set -euo pipefail
 
-if [[ -x /usr/local/opt/llvm/bin/clang ]]; then
-  CLANG=/usr/local/opt/llvm/bin/clang
-elif [[ -x /opt/homebrew/opt/llvm/bin/clang ]]; then
-  CLANG=/opt/homebrew/opt/llvm/bin/clang
+# The following code checks if you have the necessary programs to compile the samples.
+# This code exists to improve the experience of first-time Orca users and can
+# be safely deleted in your own projects if you wish.
+if [ -f ../../scripts/sample_build_check.py ]; then
+  python3 ../../scripts/sample_build_check.py
 else
-  echo "Could not find Homebrew clang; this script will probably not work."
-  CLANG=clang
+  echo "Could not check if you have the necessary tools to build the Orca samples."
+  echo "If you have copied this script to your own project, you can delete this code."
 fi
 
 ORCA_DIR=../..
@@ -16,6 +17,7 @@ STDLIB_DIR=$ORCA_DIR/src/libc-shim
 
 python3 ../../scripts/embed_text_files.py --prefix=glsl_ --output src/glsl_shaders.h src/shaders/*.glsl
 
+# common flags to build wasm modules
 wasmFlags="--target=wasm32 \
   --no-standard-libraries \
   -mbulk-memory \
@@ -27,6 +29,11 @@ wasmFlags="--target=wasm32 \
   -I $ORCA_DIR/src \
   -I $ORCA_DIR/src/ext"
 
-$CLANG $wasmFlags -o ./module.wasm $ORCA_DIR/src/orca.c $STDLIB_DIR/src/*.c src/main.c
+# build orca core as wasm module
+clang $wasmFlags -Wl,--relocatable -o ./liborca.a $ORCA_DIR/src/orca.c $STDLIB_DIR/src/*.c
 
+# build sample as wasm module and link it with the orca module
+clang $wasmFlags -L . -lorca -o module.wasm src/main.c
+
+# create app directory and copy files into it
 orca bundle --orca-dir $ORCA_DIR --name Fluid --icon icon.png module.wasm

samples/fluid/src/main.c

@@ -140,6 +140,7 @@ frame_buffer divBuffer[4];
 GLuint vertexBuffer;
 
 oc_surface surface;
+f64 startTime;
 
 //----------------------------------------------------------------
 //NOTE(martin): initialization
@@ -403,6 +404,7 @@ typedef struct mouse_input
 } mouse_input;
 
 mouse_input mouseInput = { 0 };
+bool mouseWasDown = false;
 
 int frameWidth = 800;
 int frameHeight = 600;
@@ -410,6 +412,7 @@ int frameHeight = 600;
 ORCA_EXPORT void oc_on_mouse_down(int button)
 {
     mouseInput.down = true;
+    mouseWasDown = true;
 }
 
 ORCA_EXPORT void oc_on_mouse_up(int button)
@@ -577,23 +580,56 @@ void multigrid_clear(frame_buffer* error)
 
 void input_splat(float t)
 {
-    //NOTE: apply force and dye
-    if(mouseInput.down && (mouseInput.deltaX || mouseInput.deltaY))
+    bool applySplat = false;
+    float x, y, deltaX, deltaY;
+    static f64 lastFrameTime = 0;
+    if (lastFrameTime == 0)
+    {
+        lastFrameTime = startTime;
+    }
+    f64 now = oc_clock_time(OC_CLOCK_MONOTONIC);
+    float frameDuration = now - lastFrameTime;
+    lastFrameTime = now;
+
+    if (mouseInput.down && (mouseInput.deltaX || mouseInput.deltaY))
     {
         oc_vec2 scaling = oc_surface_contents_scaling(surface);
+        applySplat = true;
+        x = mouseInput.x * scaling.x / frameWidth;
+        y = mouseInput.y * scaling.y / frameHeight;
+        deltaX = 1. / 60 / frameDuration * mouseInput.deltaX * scaling.x / frameWidth;
+        deltaY = 1. / 60 / frameDuration * mouseInput.deltaY * scaling.y / frameHeight;
+        mouseInput.deltaX = 0;
+        mouseInput.deltaY = 0;
+    }
+
+    f64 timeSinceStart = now - startTime;
+    if (!mouseWasDown && timeSinceStart < 1)
+    {
+        applySplat = true;
+        float totalDeltaX = 0.5;
+        x = 0.1 + totalDeltaX * timeSinceStart;
+        y = 0.5;
+        deltaX = totalDeltaX / 180;
+        deltaY = 0;
+    }
+
+    //NOTE: apply force and dye
+    if(applySplat)
+    {
         // account for margin
         float margin = 32;
 
         float offset = margin / texWidth;
         float ratio = 1 - 2 * margin / texWidth;
 
-        float splatPosX = (mouseInput.x * scaling.x / frameWidth) * ratio + offset;
-        float splatPosY = (1 - mouseInput.y * scaling.y / frameHeight) * ratio + offset;
+        float splatPosX = x * ratio + offset;
+        float splatPosY = (1 - y) * ratio + offset;
 
-        float splatVelX = (10000. * DELTA * mouseInput.deltaX * scaling.x / frameWidth) * ratio;
-        float splatVelY = (-10000. * DELTA * mouseInput.deltaY * scaling.y / frameWidth) * ratio;
+        float splatVelX = (10000. * DELTA * deltaX) * ratio;
+        float splatVelY = (-10000. * DELTA * deltaY) * ratio;
 
-        float intensity = 100 * sqrtf(square(ratio * mouseInput.deltaX * scaling.x / frameWidth) + square(ratio * mouseInput.deltaY * scaling.y / frameHeight));
+        float intensity = 100 * sqrtf(square(ratio * deltaX) + square(ratio * deltaY));
 
         float r = intensity * (sinf(2 * M_PI * 0.1 * t) + 1);
         float g = 0.5 * intensity * (cosf(2 * M_PI * 0.1 / M_E * t + 654) + 1);
@@ -602,9 +638,6 @@ void input_splat(float t)
         float radius = 0.005;
 
         apply_splat(splatPosX, splatPosY, radius, splatVelX, splatVelY, r, g, b, false);
-
-        mouseInput.deltaX = 0;
-        mouseInput.deltaY = 0;
     }
 }
 
@@ -677,6 +710,8 @@ ORCA_EXPORT void oc_on_init()
             testDiv[i][j][0] = 0.5 + 0.5 * cosf(j / 100. * 3.14159 + i / 100. * 1.2139);
         }
     }
+
+    startTime = oc_clock_time(OC_CLOCK_MONOTONIC);
 }
 
 ORCA_EXPORT void oc_on_resize(u32 width, u32 height)

samples/triangle/build.bat

@@ -1,9 +1,21 @@
 @echo off
+setlocal enabledelayedexpansion
+
+:: The following code checks if you have the necessary programs to compile the samples.
+:: This code exists to improve the experience of first-time Orca users and can
+:: be safely deleted in your own projects if you wish.
+if exist "..\..\scripts\sample_build_check.py" (
+       python ..\..\scripts\sample_build_check.py
+       if !ERRORLEVEL! neq 0 exit /b 1
+) else (
+       echo Could not check if you have the necessary tools to build the Orca samples.
+       echo If you have copied this script to your own project, you can delete this code.
+)
 
 set ORCA_DIR=..\..
 set STDLIB_DIR=%ORCA_DIR%\src\libc-shim
 
-:: compile wasm module
+:: common flags to build wasm modules
 set wasmFlags=--target=wasm32^
        --no-standard-libraries ^
        -mbulk-memory ^
@@ -15,7 +27,13 @@ set wasmFlags=--target=wasm32^
        -I%ORCA_DIR%\src ^
        -I%ORCA_DIR%\src\ext
 
-clang %wasmFlags% -o .\module.wasm %ORCA_DIR%\src\orca.c %STDLIB_DIR%\src\*.c src\main.c
+:: build orca core as wasm module
+clang %wasmFlags% -Wl,--relocatable -o .\liborca.a %ORCA_DIR%\src\orca.c %ORCA_DIR%\src\libc-shim\src\*.c
 IF %ERRORLEVEL% NEQ 0 EXIT /B %ERRORLEVEL%
 
-orca bundle --orca-dir %ORCA_DIR% --name Triangle module.wasm
+:: build sample as wasm module and link it with the orca module
+clang %wasmFlags% -L . -lorca -o module.wasm src/main.c
+IF %ERRORLEVEL% NEQ 0 EXIT /B %ERRORLEVEL%
+
+:: create app directory and copy files into it
+orca bundle --orca-dir %ORCA_DIR% --name Triangle --icon icon.png module.wasm

samples/triangle/build.sh

@@ -2,18 +2,20 @@
 
 set -euo pipefail
 
-if [[ -x /usr/local/opt/llvm/bin/clang ]]; then
-  CLANG=/usr/local/opt/llvm/bin/clang
-elif [[ -x /opt/homebrew/opt/llvm/bin/clang ]]; then
-  CLANG=/opt/homebrew/opt/llvm/bin/clang
+# The following code checks if you have the necessary programs to compile the samples.
+# This code exists to improve the experience of first-time Orca users and can
+# be safely deleted in your own projects if you wish.
+if [ -f ../../scripts/sample_build_check.py ]; then
+  python3 ../../scripts/sample_build_check.py
 else
-  echo "Could not find Homebrew clang; this script will probably not work."
-  CLANG=clang
+  echo "Could not check if you have the necessary tools to build the Orca samples."
+  echo "If you have copied this script to your own project, you can delete this code."
 fi
 
 ORCA_DIR=../..
 STDLIB_DIR=$ORCA_DIR/src/libc-shim
 
+# common flags to build wasm modules
 wasmFlags="--target=wasm32 \
   --no-standard-libraries \
   -mbulk-memory \
@@ -25,6 +27,11 @@ wasmFlags="--target=wasm32 \
   -I $ORCA_DIR/src \
   -I $ORCA_DIR/src/ext"
 
-$CLANG $wasmFlags -o ./module.wasm $ORCA_DIR/src/orca.c $STDLIB_DIR/src/*.c src/main.c
+# build orca core as wasm module
+clang $wasmFlags -Wl,--relocatable -o ./liborca.a $ORCA_DIR/src/orca.c $STDLIB_DIR/src/*.c
 
+# build sample as wasm module and link it with the orca module
+clang $wasmFlags -L . -lorca -o module.wasm src/main.c
+
+# create app directory and copy files into it
 orca bundle --orca-dir $ORCA_DIR --name Triangle module.wasm

samples/ui/build.bat

@@ -1,9 +1,21 @@
 @echo off
+setlocal enabledelayedexpansion
+
+:: The following code checks if you have the necessary programs to compile the samples.
+:: This code exists to improve the experience of first-time Orca users and can
+:: be safely deleted in your own projects if you wish.
+if exist "..\..\scripts\sample_build_check.py" (
+       python ..\..\scripts\sample_build_check.py
+       if !ERRORLEVEL! neq 0 exit /b 1
+) else (
+       echo Could not check if you have the necessary tools to build the Orca samples.
+       echo If you have copied this script to your own project, you can delete this code.
+)
 
 set ORCA_DIR=..\..
 set STDLIB_DIR=%ORCA_DIR%\src\libc-shim
 
-:: compile wasm module
+:: common flags to build wasm modules
 set wasmFlags=--target=wasm32^
        --no-standard-libraries ^
        -mbulk-memory ^
@@ -15,7 +27,13 @@ set wasmFlags=--target=wasm32^
        -I%ORCA_DIR%\src ^
        -I%ORCA_DIR%\src\ext
 
-clang %wasmFlags% -o .\module.wasm %ORCA_DIR%\src\orca.c %STDLIB_DIR%\src\*.c src\main.c
+:: build orca core as wasm module
+clang %wasmFlags% -Wl,--relocatable -o .\liborca.a %ORCA_DIR%\src\orca.c %ORCA_DIR%\src\libc-shim\src\*.c
 IF %ERRORLEVEL% NEQ 0 EXIT /B %ERRORLEVEL%
 
+:: build sample as wasm module and link it with the orca module
+clang %wasmFlags% -L . -lorca -o .\module.wasm src\main.c
+IF %ERRORLEVEL% NEQ 0 EXIT /B %ERRORLEVEL%
+
+:: create app directory and copy files into it
 orca bundle --orca-dir %ORCA_DIR% --name UI --resource-dir data module.wasm

samples/ui/build.sh

@@ -2,18 +2,20 @@
 
 set -euo pipefail
 
-if [[ -x /usr/local/opt/llvm/bin/clang ]]; then
-  CLANG=/usr/local/opt/llvm/bin/clang
-elif [[ -x /opt/homebrew/opt/llvm/bin/clang ]]; then
-  CLANG=/opt/homebrew/opt/llvm/bin/clang
+# The following code checks if you have the necessary programs to compile the samples.
+# This code exists to improve the experience of first-time Orca users and can
+# be safely deleted in your own projects if you wish.
+if [ -f ../../scripts/sample_build_check.py ]; then
+  python3 ../../scripts/sample_build_check.py
 else
-  echo "Could not find Homebrew clang; this script will probably not work."
-  CLANG=clang
+  echo "Could not check if you have the necessary tools to build the Orca samples."
+  echo "If you have copied this script to your own project, you can delete this code."
 fi
 
 ORCA_DIR=../..
 STDLIB_DIR=$ORCA_DIR/src/libc-shim
 
+# common flags to build wasm modules
 wasmFlags="--target=wasm32 \
   --no-standard-libraries \
   -mbulk-memory \
@@ -25,6 +27,11 @@ wasmFlags="--target=wasm32 \
   -I $ORCA_DIR/src \
   -I $ORCA_DIR/src/ext"
 
-$CLANG $wasmFlags -o ./module.wasm $ORCA_DIR/src/orca.c $STDLIB_DIR/src/*.c src/main.c
+# build orca core as wasm module
+clang $wasmFlags -Wl,--relocatable -o ./liborca.a $ORCA_DIR/src/orca.c $STDLIB_DIR/src/*.c
 
+# build sample as wasm module and link it with the orca module
+clang $wasmFlags -L . -lorca -o module.wasm src/main.c
+
+# create app directory and copy files into it
 orca bundle --orca-dir $ORCA_DIR --name UI --resource-dir data module.wasm

scripts/bindgen.py

@@ -5,292 +5,298 @@ import json
 
 
 def needs_arg_ptr_stub(decl):
-	res = (decl['ret']['tag'] == 'S')
-	for arg in decl['args']:
-		if arg['type']['tag'] == 'S':
-			res = True
-	return(res)
+    res = (decl['ret']['tag'] == 'S')
+    for arg in decl['args']:
+        if arg['type']['tag'] == 'S':
+            res = True
+    return(res)
 
 def printError(str):
-	# This prints a string with a red foreground color.
-	# See this link for an explanation of console escape codes: https://stackabuse.com/how-to-print-colored-text-in-python/
-	print("\x1b[38;5;196m" + "error: " + str + "\033[0;0m")
+    # This prints a string with a red foreground color.
+    # See this link for an explanation of console escape codes: https://stackabuse.com/how-to-print-colored-text-in-python/
+    print("\x1b[38;5;196m" + "error: " + str + "\033[0;0m")
 
 
 def bindgen(apiName, spec, **kwargs):
-	guest_stubs_path = kwargs.get("guest_stubs")
-	guest_include = kwargs.get("guest_include")
-	wasm3_bindings_path = kwargs.get("wasm3_bindings")
+    guest_stubs_path = kwargs.get("guest_stubs")
+    guest_include = kwargs.get("guest_include")
+    wasm3_bindings_path = kwargs.get("wasm3_bindings")
 
-	if guest_stubs_path == None:
-		guest_stubs_path = 'bindgen_' + apiName + '_guest_stubs.c'
-	if wasm3_bindings_path == None:
-		wasm3_bindings_path = 'bindgen_' + apiName + '_wasm3_bindings.c'
+    if guest_stubs_path == None:
+        guest_stubs_path = 'bindgen_' + apiName + '_guest_stubs.c'
+    if wasm3_bindings_path == None:
+        wasm3_bindings_path = 'bindgen_' + apiName + '_wasm3_bindings.c'
 
-	host_bindings = open(wasm3_bindings_path, 'w')
-	guest_bindings = None
+    host_bindings = open(wasm3_bindings_path, 'w')
+    guest_bindings = None
 
-	specFile = open(spec, 'r')
-	data = json.load(specFile)
+    specFile = open(spec, 'r')
+    data = json.load(specFile)
 
-	for decl in data:
-		if needs_arg_ptr_stub(decl):
-			guest_bindings = open(guest_stubs_path, 'w')
-			if guest_include != None:
-				s = '#include"' + guest_include + '"\n\n'
-				print(s, file=guest_bindings)
-			break
+    for decl in data:
+        if needs_arg_ptr_stub(decl):
+            guest_bindings = open(guest_stubs_path, 'w')
+            if guest_include != None:
+                s = '#include"' + guest_include + '"\n\n'
+                print(s, file=guest_bindings)
+            break
 
-	for decl in data:
+    for decl in data:
 
-		name = decl['name']
-		cname = decl.get('cname', name)
+        name = decl['name']
+        cname = decl.get('cname', name)
 
-		if needs_arg_ptr_stub(decl):
-			argPtrStubName = name + '_argptr_stub'
-			# pointer arg stub declaration
-			s = ''
-			if decl['ret']['tag'] == 'S':
-				s += 'void'
-			else:
-				s += decl['ret']['name']
+        if needs_arg_ptr_stub(decl):
+            argPtrStubName = name + '_argptr_stub'
+            # pointer arg stub declaration
+            s = ''
+            if decl['ret']['tag'] == 'S':
+                s += 'void'
+            else:
+                s += decl['ret']['name']
 
-			s += ' ORCA_IMPORT(' + argPtrStubName + ') ('
+            s += ' ORCA_IMPORT(' + argPtrStubName + ') ('
 
-			if decl['ret']['tag'] == 'S':
-				s += decl['ret']['name'] + '* __retArg'
-				if len(decl['args']) > 0:
-					s += ', '
+            if decl['ret']['tag'] == 'S':
+                s += decl['ret']['name'] + '* __retArg'
+                if len(decl['args']) > 0:
+                    s += ', '
+            elif len(decl['args']) == 0:
+                s += 'void'
 
-			for i, arg in enumerate(decl['args']):
-				s += arg['type']['name']
-				if arg['type']['tag'] == 'S':
-					s += '*'
-				s += ' ' + arg['name']
-				if i+1 < len(decl['args']):
-					s += ', '
-			s += ');\n\n'
+            for i, arg in enumerate(decl['args']):
+                s += arg['type']['name']
+                if arg['type']['tag'] == 'S':
+                    s += '*'
+                s += ' ' + arg['name']
+                if i+1 < len(decl['args']):
+                    s += ', '
+            s += ');\n\n'
 
-			# forward function to pointer arg stub declaration
-			s += decl['ret']['name'] + ' ' + name + '('
-			for i, arg in enumerate(decl['args']):
-				s += arg['type']['name'] + ' ' + arg['name']
-				if i+1 < len(decl['args']):
-					s += ', '
-			s += ')\n'
-			s += '{\n'
-			s += '\t'
-			if decl['ret']['tag'] == 'S':
-				s += decl['ret']['name'] + ' __ret;\n\t'
-			elif decl['ret']['tag'] != 'v':
-				s += decl['ret']['name']
-				s += ' __ret = '
-			s += argPtrStubName + '('
+            # forward function to pointer arg stub declaration
+            s += decl['ret']['name'] + ' ' + name + '('
 
-			if decl['ret']['tag'] == 'S':
-				s += '&__ret'
-				if len(decl['args']) > 0:
-					s += ', '
+            if len(decl['args']) == 0:
+                s += 'void'
 
-			for i, arg in enumerate(decl['args']):
-				if arg['type']['tag'] == 'S':
-					s += '&'
+            for i, arg in enumerate(decl['args']):
+                s += arg['type']['name'] + ' ' + arg['name']
+                if i+1 < len(decl['args']):
+                    s += ', '
+            s += ')\n'
+            s += '{\n'
+            s += '\t'
+            if decl['ret']['tag'] == 'S':
+                s += decl['ret']['name'] + ' __ret;\n\t'
+            elif decl['ret']['tag'] != 'v':
+                s += decl['ret']['name']
+                s += ' __ret = '
+            s += argPtrStubName + '('
 
-				s += arg['name']
-				if i+1 < len(decl['args']):
-					s += ', '
-			s += ');\n'
-			if decl['ret']['tag'] != 'v':
-				s += '\treturn(__ret);\n'
-			s += '}\n\n'
+            if decl['ret']['tag'] == 'S':
+                s += '&__ret'
+                if len(decl['args']) > 0:
+                    s += ', '
 
-			print(s, file=guest_bindings)
+            for i, arg in enumerate(decl['args']):
+                if arg['type']['tag'] == 'S':
+                    s += '&'
 
-		# host-side stub
-		s = 'const void* ' + cname + '_stub(IM3Runtime runtime, IM3ImportContext _ctx, uint64_t* _sp, void* _mem)'
+                s += arg['name']
+                if i+1 < len(decl['args']):
+                    s += ', '
+            s += ');\n'
+            if decl['ret']['tag'] != 'v':
+                s += '\treturn(__ret);\n'
+            s += '}\n\n'
 
-		gen_stub = decl.get('gen_stub', True)
-		if gen_stub == False:
-			s += ';\n\n'
-		else:
-			s += '\n{\n'
+            print(s, file=guest_bindings)
+
+        # host-side stub
+        s = 'const void* ' + cname + '_stub(IM3Runtime runtime, IM3ImportContext _ctx, uint64_t* _sp, void* _mem)'
+
+        gen_stub = decl.get('gen_stub', True)
+        if gen_stub == False:
+            s += ';\n\n'
+        else:
+            s += '\n{\n'
 
 
-			# NOTE: check and cast arguments
-			retTag = decl['ret']['tag']
+            # NOTE: check and cast arguments
+            retTag = decl['ret']['tag']
 
-			firstArgIndex = 0
-			if retTag != 'v':
-				firstArgIndex = 1
+            firstArgIndex = 0
+            if retTag != 'v':
+                firstArgIndex = 1
 
-				if retTag == 'S':
-					retTypeName = decl['ret']['name']
-					retTypeCName = decl['ret'].get('cname', retTypeName)
-					s += retTypeCName + '* __retPtr = (' + retTypeCName + '*)((char*)_mem + *(i32*)&_sp[0]);\n'
+                if retTag == 'S':
+                    retTypeName = decl['ret']['name']
+                    retTypeCName = decl['ret'].get('cname', retTypeName)
+                    s += retTypeCName + '* __retPtr = (' + retTypeCName + '*)((char*)_mem + *(i32*)&_sp[0]);\n'
 
-					s += '\t{\n'
-					s += '\t\tOC_ASSERT(((char*)__retPtr >= (char*)_mem) && (((char*)__retPtr - (char*)_mem) < m3_GetMemorySize(runtime)), "return pointer is out of bounds");\n'
-					s += '\t\tOC_ASSERT((char*)__retPtr + sizeof(' + retTypeCName + ') <= ((char*)_mem + m3_GetMemorySize(runtime)), "return pointer is out of bounds");\n'
-					s += '\t}\n'
+                    s += '\t{\n'
+                    s += '\t\tOC_ASSERT(((char*)__retPtr >= (char*)_mem) && (((char*)__retPtr - (char*)_mem) < m3_GetMemorySize(runtime)), "return pointer is out of bounds");\n'
+                    s += '\t\tOC_ASSERT((char*)__retPtr + sizeof(' + retTypeCName + ') <= ((char*)_mem + m3_GetMemorySize(runtime)), "return pointer is out of bounds");\n'
+                    s += '\t}\n'
 
-			for argIndex, arg in enumerate(decl['args']):
+            for argIndex, arg in enumerate(decl['args']):
 
-				argName = arg['name']
-				typeName = arg['type']['name']
-				typeCName = arg['type'].get('cname', typeName)
-				argTag = arg['type']['tag']
+                argName = arg['name']
+                typeName = arg['type']['name']
+                typeCName = arg['type'].get('cname', typeName)
+                argTag = arg['type']['tag']
 
-				s += '\t'
+                s += '\t'
 
-				if argTag == 'i':
-					s += typeCName + ' ' + argName + ' = ('+typeCName+')*(i32*)&_sp[' + str(firstArgIndex + argIndex) + '];\n'
-				elif argTag == 'I':
-					s += typeCName + ' ' + argName + ' = ('+typeCName+')*(i64*)&_sp[' + str(firstArgIndex + argIndex) + '];\n'
-				elif argTag == 'f':
-					s += typeCName + ' ' + argName + ' = ('+typeCName+')*(f32*)&_sp[' + str(firstArgIndex + argIndex) + '];\n'
-				elif argTag == 'F':
-					s += typeCName + ' ' + argName + ' = ('+typeCName+')*(f64*)&_sp[' + str(firstArgIndex + argIndex) + '];\n'
-				elif argTag == 'p':
-					s += typeCName + ' ' + argName + ' = ('+ typeCName +')((char*)_mem + *(u32*)&_sp[' + str(firstArgIndex + argIndex) + ']);\n'
-				elif argTag == 'S':
-					s += typeCName + ' ' + argName + ' = *('+ typeCName +'*)((char*)_mem + *(u32*)&_sp[' + str(firstArgIndex + argIndex) + ']);\n'
-				else:
-					print('unrecognized type ' + c + ' in procedure signature\n')
-					break
+                if argTag == 'i':
+                    s += typeCName + ' ' + argName + ' = ('+typeCName+')*(i32*)&_sp[' + str(firstArgIndex + argIndex) + '];\n'
+                elif argTag == 'I':
+                    s += typeCName + ' ' + argName + ' = ('+typeCName+')*(i64*)&_sp[' + str(firstArgIndex + argIndex) + '];\n'
+                elif argTag == 'f':
+                    s += typeCName + ' ' + argName + ' = ('+typeCName+')*(f32*)&_sp[' + str(firstArgIndex + argIndex) + '];\n'
+                elif argTag == 'F':
+                    s += typeCName + ' ' + argName + ' = ('+typeCName+')*(f64*)&_sp[' + str(firstArgIndex + argIndex) + '];\n'
+                elif argTag == 'p':
+                    s += typeCName + ' ' + argName + ' = ('+ typeCName +')((char*)_mem + *(u32*)&_sp[' + str(firstArgIndex + argIndex) + ']);\n'
+                elif argTag == 'S':
+                    s += typeCName + ' ' + argName + ' = *('+ typeCName +'*)((char*)_mem + *(u32*)&_sp[' + str(firstArgIndex + argIndex) + ']);\n'
+                else:
+                    print('unrecognized type ' + c + ' in procedure signature\n')
+                    break
 
-			# check pointer arg length
-			for arg in decl['args']:
+            # check pointer arg length
+            for arg in decl['args']:
 
-				argName = arg['name']
-				typeName = arg['type']['name']
-				typeCName = arg['type'].get('cname', typeName)
-				argTag = arg['type']['tag']
-				argLen = arg.get('len')
+                argName = arg['name']
+                typeName = arg['type']['name']
+                typeCName = arg['type'].get('cname', typeName)
+                argTag = arg['type']['tag']
+                argLen = arg.get('len')
 
-				if argTag == 'p':
-					if argLen == None:
-						printError("binding '" + name + "' missing pointer length decoration for param '" + argName + "'")
-					else:
-						s += '\t{\n'
-						s += '\t\tOC_ASSERT(((char*)'+ argName + ' >= (char*)_mem) && (((char*)'+ argName +' - (char*)_mem) < m3_GetMemorySize(runtime)), "parameter \''+argName+'\' is out of bounds");\n'
-						s += '\t\tOC_ASSERT((char*)' + argName + ' + '
+                if argTag == 'p':
+                    if argLen == None:
+                        printError("binding '" + name + "' missing pointer length decoration for param '" + argName + "'")
+                    else:
+                        s += '\t{\n'
+                        s += '\t\tOC_ASSERT(((char*)'+ argName + ' >= (char*)_mem) && (((char*)'+ argName +' - (char*)_mem) < m3_GetMemorySize(runtime)), "parameter \''+argName+'\' is out of bounds");\n'
+                        s += '\t\tOC_ASSERT((char*)' + argName + ' + '
 
-						proc = argLen.get('proc')
-						if proc != None:
-							s += proc + '(runtime, '
-							lenProcArgs = argLen['args']
-							for i, lenProcArg in enumerate(lenProcArgs):
-								s += lenProcArg
-								if i < len(lenProcArgs)-1:
-									s += ', '
-							s += ')'
-						else:
-							components =  argLen.get('components')
-							countArg = argLen.get('count')
+                        proc = argLen.get('proc')
+                        if proc != None:
+                            s += proc + '(runtime, '
+                            lenProcArgs = argLen['args']
+                            for i, lenProcArg in enumerate(lenProcArgs):
+                                s += lenProcArg
+                                if i < len(lenProcArgs)-1:
+                                    s += ', '
+                            s += ')'
+                        else:
+                            components =  argLen.get('components')
+                            countArg = argLen.get('count')
 
-							if components != None:
-								s += str(components)
-								if countArg != None:
-									s += '*'
-							if countArg != None:
-								s += countArg
+                            if components != None:
+                                s += str(components)
+                                if countArg != None:
+                                    s += '*'
+                            if countArg != None:
+                                s += countArg
 
-						if typeCName.endswith('**') or (typeCName.startswith('void') == False and typeCName.startswith('const void') == False):
-							s += '*sizeof('+typeCName[:-1]+')'
+                        if typeCName.endswith('**') or (typeCName.startswith('void') == False and typeCName.startswith('const void') == False):
+                            s += '*sizeof('+typeCName[:-1]+')'
 
-						s += ' <= ((char*)_mem + m3_GetMemorySize(runtime)), "parameter \''+argName+'\' is out of bounds");\n'
-						s += '\t}\n'
+                        s += ' <= ((char*)_mem + m3_GetMemorySize(runtime)), "parameter \''+argName+'\' is out of bounds");\n'
+                        s += '\t}\n'
 
-			s += '\t'
+            s += '\t'
 
-			if retTag == 'i':
-				s += '*((i32*)&_sp[0]) = (i32)'
-			elif retTag == 'I':
-				s += '*((i64*)&_sp[0]) = (i64)'
-			elif retTag == 'f':
-				s += '*((f32*)&_sp[0]) = (f32)'
-			elif retTag == 'F':
-				s += '*((f64*)&_sp[0]) = (f64)'
-			elif retTag == 'S':
-				s += '*__retPtr = '
-			elif retTag == 'p':
-				print("Warning: " + name + ": pointer return type not supported yet")
+            if retTag == 'i':
+                s += '*((i32*)&_sp[0]) = (i32)'
+            elif retTag == 'I':
+                s += '*((i64*)&_sp[0]) = (i64)'
+            elif retTag == 'f':
+                s += '*((f32*)&_sp[0]) = (f32)'
+            elif retTag == 'F':
+                s += '*((f64*)&_sp[0]) = (f64)'
+            elif retTag == 'S':
+                s += '*__retPtr = '
+            elif retTag == 'p':
+                print("Warning: " + name + ": pointer return type not supported yet")
 
-			s += cname + '('
+            s += cname + '('
 
-			for i, arg in enumerate(decl['args']):
-				s += arg['name']
+            for i, arg in enumerate(decl['args']):
+                s += arg['name']
 
-				if i+1 < len(decl['args']):
-					s += ', '
+                if i+1 < len(decl['args']):
+                    s += ', '
 
-			s += ');\n\treturn(0);\n}\n\n'
+            s += ');\n\treturn(0);\n}\n\n'
 
-		print(s, file=host_bindings)
+        print(s, file=host_bindings)
 
-	# link function
-	s = 'int bindgen_link_' + apiName + '_api(IM3Module module)\n{\n'
-	s += '	M3Result res;\n'
-	s += '	int ret = 0;\n'
+    # link function
+    s = 'int bindgen_link_' + apiName + '_api(IM3Module module)\n{\n'
+    s += '  M3Result res;\n'
+    s += '  int ret = 0;\n'
 
-	for decl in data:
-		name = decl['name']
-		cname = decl.get('cname', name)
+    for decl in data:
+        name = decl['name']
+        cname = decl.get('cname', name)
 
-		if needs_arg_ptr_stub(decl):
-			name = name + '_argptr_stub'
+        if needs_arg_ptr_stub(decl):
+            name = name + '_argptr_stub'
 
-		m3Sig = ''
-		if decl['ret']['tag'] == 'S':
-			m3Sig += 'v'
-		else:
-			m3Sig += decl['ret']['tag']
+        m3Sig = ''
+        if decl['ret']['tag'] == 'S':
+            m3Sig += 'v'
+        else:
+            m3Sig += decl['ret']['tag']
 
-		m3Sig += '('
-		if decl['ret']['tag'] == 'S':
-			m3Sig += 'i'
-		for arg in decl['args']:
-			tag = arg['type']['tag']
-			if tag == 'p' or tag == 'S':
-				tag = 'i'
-			m3Sig += tag
-		m3Sig += ')'
+        m3Sig += '('
+        if decl['ret']['tag'] == 'S':
+            m3Sig += 'i'
+        for arg in decl['args']:
+            tag = arg['type']['tag']
+            if tag == 'p' or tag == 'S':
+                tag = 'i'
+            m3Sig += tag
+        m3Sig += ')'
 
 
-		s += '	res = m3_LinkRawFunction(module, "*", "' + name + '", "' + m3Sig + '", ' + cname + '_stub);\n'
-		s += '	if(res != m3Err_none && res != m3Err_functionLookupFailed)\n'
-		s += '	{\n'
-		s += '		oc_log_error("Couldn\'t link function ' + name + ' (%s)\\n", res);\n'
-		s += '		ret = -1;\n'
-		s += '	}\n\n'
+        s += '  res = m3_LinkRawFunction(module, "*", "' + name + '", "' + m3Sig + '", ' + cname + '_stub);\n'
+        s += '  if(res != m3Err_none && res != m3Err_functionLookupFailed)\n'
+        s += '  {\n'
+        s += '      oc_log_error("Couldn\'t link function ' + name + ' (%s)\\n", res);\n'
+        s += '      ret = -1;\n'
+        s += '  }\n\n'
 
-	s += '\treturn(ret);\n}\n'
+    s += '\treturn(ret);\n}\n'
 
-	print(s, file=host_bindings)
+    print(s, file=host_bindings)
 
 
 if __name__ == "__main__":
-	parser = ArgumentParser(prog='bindgen.py')
-	parser.add_argument('api')
-	parser.add_argument('spec')
-	parser.add_argument('-g', '--guest-stubs')
-	parser.add_argument('--guest-include')
-	parser.add_argument('--wasm3-bindings')
+    parser = ArgumentParser(prog='bindgen.py')
+    parser.add_argument('api')
+    parser.add_argument('spec')
+    parser.add_argument('-g', '--guest-stubs')
+    parser.add_argument('--guest-include')
+    parser.add_argument('--wasm3-bindings')
 
-	args = parser.parse_args()
+    args = parser.parse_args()
 
-	apiName = args.api
-	spec = args.spec
-	guest_stubs_path = args.guest_stubs
-	if guest_stubs_path == None:
-		guest_stubs_path = 'bindgen_' + apiName + '_guest_stubs.c'
+    apiName = args.api
+    spec = args.spec
+    guest_stubs_path = args.guest_stubs
+    if guest_stubs_path == None:
+        guest_stubs_path = 'bindgen_' + apiName + '_guest_stubs.c'
 
-	wasm3_bindings_path = args.wasm3_bindings
-	if wasm3_bindings_path == None:
-		wasm3_bindings_path = 'bindgen_' + apiName + '_wasm3_bindings.c'
+    wasm3_bindings_path = args.wasm3_bindings
+    if wasm3_bindings_path == None:
+        wasm3_bindings_path = 'bindgen_' + apiName + '_wasm3_bindings.c'
 
-	bindgen(apiName, spec,
-		guest_stubs=guest_stubs_path,
-		guest_include=args.guest_include,
-		wasm3_bindings=wasm3_bindings_path,
-	)
+    bindgen(apiName, spec,
+        guest_stubs=guest_stubs_path,
+        guest_include=args.guest_include,
+        wasm3_bindings=wasm3_bindings_path,
+    )

scripts/checksum.py

@@ -1,5 +1,6 @@
 import hashlib
 import json
+import os
 
 from .log import *
 
@@ -28,3 +29,80 @@ def checkfile(filepath):
 def filesum(filepath):
     with open(filepath, "rb") as file:
         return hashlib.sha256(file.read()).hexdigest()
+
+
+# -----------------------------------------------------------------------------
+# Directory-hashing implementation pulled from the checksumdir package on pypi.
+# Licensed under the MIT license.
+# -----------------------------------------------------------------------------
+
+def dirsum(
+    dirname,
+    hash_func=hashlib.sha1,
+    excluded_files=None,
+    ignore_hidden=False,
+    followlinks=False,
+    excluded_extensions=None,
+    include_paths=False
+):
+    if not excluded_files:
+        excluded_files = []
+
+    if not excluded_extensions:
+        excluded_extensions = []
+
+    if not os.path.isdir(dirname):
+        raise TypeError("{} is not a directory.".format(dirname))
+
+    hashvalues = []
+    for root, dirs, files in os.walk(dirname, topdown=True, followlinks=followlinks):
+        if ignore_hidden and re.search(r"/\.", root):
+            continue
+
+        dirs.sort()
+        files.sort()
+
+        for fname in files:
+            if ignore_hidden and fname.startswith("."):
+                continue
+
+            if fname.split(".")[-1:][0] in excluded_extensions:
+                continue
+
+            if fname in excluded_files:
+                continue
+
+            hashvalues.append(_filehash(os.path.join(root, fname), hash_func))
+
+            if include_paths:
+                hasher = hash_func()
+                # get the resulting relative path into array of elements
+                path_list = os.path.relpath(os.path.join(root, fname)).split(os.sep)
+                # compute the hash on joined list, removes all os specific separators
+                hasher.update(''.join(path_list).encode('utf-8'))
+                hashvalues.append(hasher.hexdigest())
+
+    return _reduce_hash(hashvalues, hash_func)
+
+
+def _filehash(filepath, hashfunc):
+    hasher = hashfunc()
+    blocksize = 64 * 1024
+
+    if not os.path.exists(filepath):
+        return hasher.hexdigest()
+
+    with open(filepath, "rb") as fp:
+        while True:
+            data = fp.read(blocksize)
+            if not data:
+                break
+            hasher.update(data)
+    return hasher.hexdigest()
+
+
+def _reduce_hash(hashlist, hashfunc):
+    hasher = hashfunc()
+    for hashvalue in sorted(hashlist):
+        hasher.update(hashvalue.encode("utf-8"))
+    return hasher.hexdigest()

scripts/dev.py

@@ -1,6 +1,7 @@
 import glob
 import os
 import platform
+import re
 import urllib.request
 import shutil
 import subprocess
@@ -8,6 +9,7 @@ from zipfile import ZipFile
 
 from . import checksum
 from .bindgen import bindgen
+from .checksum import dirsum
 from .gles_gen import gles_gen
 from .log import *
 from .utils import pushd, removeall, yeetdir, yeetfile
@@ -15,7 +17,7 @@ from .embed_text_files import *
 from .version import check_if_source, is_orca_source, orca_version
 
 ANGLE_VERSION = "2023-07-05"
-
+MAC_SDK_DIR = "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk"
 
 def attach_dev_commands(subparsers):
     dev_cmd = subparsers.add_parser("dev", help="Commands for building Orca itself. Must be run from within an Orca source checkout.")
@@ -65,6 +67,21 @@ def build_runtime(args):
     build_wasm3(args.release)
     build_orca(args.release)
 
+    with open("build/orcaruntime.sum", "w") as f:
+        f.write(runtime_checksum())
+
+
+def runtime_checksum_last():
+    try:
+        with open("build/orcaruntime.sum", "r") as f:
+            return f.read()
+    except FileNotFoundError:
+        return None
+
+
+def runtime_checksum():
+    return dirsum("src")
+
 
 def clean(args):
     yeetdir("build")
@@ -151,12 +168,10 @@ def build_platform_layer_lib_win(release):
     ], check=True)
 
 def build_platform_layer_lib_mac(release):
-    sdk_dir = "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk"
-
-    flags = ["-mmacos-version-min=10.15.4", "-maes"]
+    flags = ["-mmacos-version-min=10.15.4"]
     cflags = ["-std=c11"]
     debug_flags = ["-O3"] if release else ["-g", "-DOC_DEBUG", "-DOC_LOG_COMPILE_DEBUG"]
-    ldflags = [f"-L{sdk_dir}/usr/lib", f"-F{sdk_dir}/System/Library/Frameworks/"]
+    ldflags = [f"-L{MAC_SDK_DIR}/usr/lib", f"-F{MAC_SDK_DIR}/System/Library/Frameworks/"]
     includes = ["-Isrc", "-Isrc/util", "-Isrc/platform", "-Isrc/ext", "-Isrc/ext/angle/include"]
 
     # compile metal shader
@@ -263,6 +278,7 @@ def build_wasm3_lib_mac(release):
         "-foptimize-sibling-calls",
         "-Wno-extern-initializer",
         "-Dd_m3VerboseErrorMessages",
+        "-mmacos-version-min=10.15.4"
     ]
 
     for f in glob.iglob("src/ext/wasm3/source/*.c"):
@@ -272,7 +288,7 @@ def build_wasm3_lib_mac(release):
             "-o", f"build/obj/{name}",
             f,
         ], check=True)
-    subprocess.run(["ar", "-rcs", "build/lib/libwasm3.a", *glob.glob("build/obj/*.o")], check=True)
+    subprocess.run(["libtool", "-static", "-o", "build/lib/libwasm3.a", "-no_warning_for_no_symbols", *glob.glob("build/obj/*.o")], check=True)
     subprocess.run(["rm", "-rf", "build/obj"], check=True)
 
 
@@ -331,9 +347,7 @@ def build_orca_mac(release):
     debug_flags = ["-O2"] if release else ["-g", "-DOC_DEBUG -DOC_LOG_COMPILE_DEBUG"]
     flags = [
         *debug_flags,
-        "-mmacos-version-min=10.15.4",
-        "-maes",
-    ]
+        "-mmacos-version-min=10.15.4"]
 
     gen_all_bindings()
 
@@ -390,28 +404,61 @@ def gen_all_bindings():
 
 def ensure_programs():
     if platform.system() == "Windows":
+        MSVC_MAJOR, MSVC_MINOR = 19, 35
         try:
-            subprocess.run(["cl"], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+            cl_only = subprocess.run(["cl"], capture_output=True, text=True)
+            desc = cl_only.stderr.splitlines()[0]
+
+            detect = subprocess.run(["cl", "/EP", "scripts\\msvc_version.txt"], capture_output=True, text=True)
+            parts = [x for x in detect.stdout.splitlines() if x]
+            version, arch = int(parts[0]), parts[1]
+            major, minor = int(version / 100), version % 100
+
+            if arch != "x64":
+                msg = log_error("MSVC is not running in 64-bit mode. Make sure you are running in")
+                msg.more("an x64 Visual Studio command prompt, such as the \"x64 Native Tools")
+                msg.more("Command Prompt\" from your Start Menu.")
+                msg.more()
+                msg.more("MSVC reported itself as:")
+                msg.more(desc)
+                exit(1)
+
+            if major < MSVC_MAJOR or minor < MSVC_MINOR:
+                msg = log_error(f"Your version of MSVC is too old. You have version {major}.{minor},")
+                msg.more(f"but version {MSVC_MAJOR}.{MSVC_MINOR} or greater is required.")
+                msg.more()
+                msg.more("MSVC reported itself as:")
+                msg.more(desc)
+                msg.more()
+                msg.more("Please update Visual Studio to the latest version and try again.")
+                exit(1)
         except FileNotFoundError:
             msg = log_error("MSVC was not found on your system.")
-            msg.more("If you have already installed Visual Studio, make sure you are running in a")
-            msg.more("Visual Studio command prompt or you have run vcvarsall.bat. Otherwise, download")
-            msg.more("and install Visual Studio: https://visualstudio.microsoft.com/")
+            msg.more("If you have already installed Visual Studio, make sure you are running in an")
+            msg.more("x64 Visual Studio command prompt, such as the \"x64 Native Tools Command")
+            msg.more("Prompt\" from your Start Menu. Otherwise, download and install Visual Studio,")
+            msg.more("and ensure that your installation includes \"Desktop development with C++\"")
+            msg.more("and \"C++ Clang Compiler\": https://visualstudio.microsoft.com/")
             exit(1)
 
-    try:
-        subprocess.run(["clang", "-v"], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
-    except FileNotFoundError:
-        msg = log_error("clang was not found on your system.")
-        if platform.system() == "Windows":
-            msg.more("We recommend installing clang via the Visual Studio installer.")
-        elif platform.system() == "Darwin":
+    if platform.system() == "Darwin":
+        try:
+            subprocess.run(["clang", "-v"], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+        except FileNotFoundError:
+            msg = log_error("clang was not found on your system.")
             msg.more("Run the following to install it:")
             msg.more()
             msg.more("  brew install llvm")
             msg.more()
-        exit(1)
-    # TODO(ben): Check for xcode command line tools
+            exit(1)
+
+        if not os.path.exists(MAC_SDK_DIR):
+            msg = log_error("The Xcode command-line tools are not installed.")
+            msg.more("Run the following to install them:")
+            msg.more()
+            msg.more("  xcode-select --install")
+            msg.more()
+            exit(1)
 
 
 def ensure_angle():
@@ -501,6 +548,20 @@ def install_dir():
 
 
 def install(args):
+    if runtime_checksum_last() is None:
+        print("You must build the Orca runtime before you can install it to your")
+        print("system. Please run the following command first:")
+        print()
+        print("orca dev build-runtime")
+        exit(1)
+
+    if runtime_checksum() != runtime_checksum_last():
+        print("Your build of the Orca runtime is out of date. We recommend that you")
+        print("rebuild the runtime first with `orca dev build-runtime`.")
+        if not prompt("Do you wish to install the runtime anyway?"):
+            return
+        print()
+
     dest = install_dir()
     bin_dir = os.path.join(dest, "bin")
     src_dir = os.path.join(dest, "src")
@@ -558,8 +619,13 @@ def install(args):
         print()
         print("The tools will need to be on your PATH in order to actually use them.")
         if prompt("Would you like to automatically add Orca to your PATH?"):
-            subprocess.run(["powershell", "scripts\\updatepath.ps1", bin_dir], check=True)
-            print("Orca has been added to your PATH. Restart any open terminals to use it.")
+            try:
+                subprocess.run(["powershell", "-ExecutionPolicy", "Bypass", "scripts\\updatepath.ps1", f'"{bin_dir}"'], check=True)
+                print("Orca has been added to your PATH. Restart any open terminals to use it.")
+            except subprocess.CalledProcessError:
+                msg = log_warning(f"Failed to automatically add Orca to your PATH.")
+                msg.more("Please manually add the following directory to your PATH:")
+                msg.more(bin_dir)
         else:
             print("No worries. You can manually add Orca to your PATH in the Windows settings")
             print("by searching for \"environment variables\".")
@@ -600,7 +666,12 @@ def uninstall(args):
             print("Orca has been uninstalled from your system.")
             print()
             if prompt("Would you like to automatically remove Orca from your PATH?"):
-                subprocess.run(["powershell", "scripts\\updatepath.ps1", bin_dir, "-remove"], check=True)
-                print("Orca has been removed from your PATH.")
+                try:
+                    subprocess.run(["powershell", "-ExecutionPolicy", "Bypass", "scripts\\updatepath.ps1", f'"{bin_dir}"', "-remove"], check=True)
+                    print("Orca has been removed from your PATH.")
+                except subprocess.CalledProcessError:
+                    msg = log_warning(f"Failed to automatically remove Orca from your PATH.")
+                    msg.more("Please manually remove the following directory from your PATH:")
+                    msg.more(bin_dir)
         else:
             print("Orca has been uninstalled from your system. You may wish to remove it from your PATH.")

scripts/msvc_version.txt

@@ -0,0 +1,9 @@
+_MSC_VER
+
+#if defined(__x86_64__) || defined(_M_X64)
+x64
+#elif defined(i386) || defined(__i386__) || defined(__i386) || defined(_M_IX86)
+x86
+#else
+unknown
+#endif

scripts/sample_build_check.py

@@ -0,0 +1,61 @@
+import platform
+import re
+import shutil
+import subprocess
+import textwrap
+
+CLANG_MAJOR, CLANG_MINOR = 11, 0
+
+def printw(str=""):
+    print(textwrap.fill(str))
+
+def print_clang_install_info(upgrade):
+    if platform.system() == "Windows":
+        printw(f"Please install Clang {CLANG_MAJOR}.{CLANG_MINOR} or newer. We recommend installing Clang via the Visual Studio installer. In the installer, search for \"C++ Clang Compiler\".")
+    elif platform.system() == "Darwin":
+        printw(f"Please install Clang {CLANG_MAJOR}.{CLANG_MINOR} or newer. We recommend installing Clang via Homebrew (https://brew.sh/):")
+        printw()
+        if upgrade:
+            printw("  brew upgrade llvm")
+        else:
+            printw("  brew install llvm")
+        printw()
+    else:
+        printw(f"Please install Clang {CLANG_MAJOR}.{CLANG_MINOR} or newer.")
+
+try:
+    out = subprocess.run(["clang", "--version"], capture_output=True, text=True, check=True)
+    m = re.search(r"clang version (\d+)\.(\d+)\.(\d+)", out.stdout)
+    major, minor, patch = int(m.group(1)), int(m.group(2)), int(m.group(3))
+    if major < CLANG_MAJOR or minor < CLANG_MINOR:
+        printw(f"ERROR: Your version of Clang is too old. You have version {major}.{minor}.{patch}, but version {CLANG_MAJOR}.{CLANG_MINOR} or greater is required.")
+        printw()
+        printw("This script is currently running the clang located at:")
+        printw(shutil.which("clang"))
+        printw()
+        print_clang_install_info(True)
+        exit(1)
+except FileNotFoundError:
+    printw("ERROR: clang is not installed. The Orca samples require Clang in order to compile C programs to WebAssembly.")
+    printw()
+    print_clang_install_info(False)
+    exit(1)
+except subprocess.CalledProcessError:
+    printw("WARNING: Could not check Clang version. You may encounter build errors.")
+
+try:
+    subprocess.run(["wasm-ld", "--version"], capture_output=True, check=True)
+except FileNotFoundError:
+    printw("ERROR: wasm-ld was not found on your system. This is a component of Clang that is required in order to produce WebAssembly modules. This likely means that an old or otherwise incompatible version of Clang is being used, such as Apple's version of Clang.")
+    printw()
+    print_clang_install_info(False)
+    exit(1)
+
+try:
+    subprocess.run(["orca", "version"], capture_output=True, shell=True, check=True)
+except subprocess.CalledProcessError:
+    printw("ERROR: The Orca tooling has not been installed to your system or is not on your PATH. From the root of the Orca source code, please run the following commands:")
+    printw()
+    printw("  python orca dev build-runtime")
+    printw("  python orca dev install")
+    exit(1)

scripts/source.py

@@ -4,6 +4,7 @@ import os
 import re
 import shutil
 
+from .checksum import dirsum
 from .log import *
 from .utils import yeetdir
 from .version import src_dir, orca_version
@@ -11,7 +12,7 @@ from .version import src_dir, orca_version
 
 def attach_source_commands(subparsers):
     source_cmd = subparsers.add_parser("source", help="Commands for helping compile the Orca source code into your project.")
-    source_sub = source_cmd.add_subparsers(title="commands")
+    source_sub = source_cmd.add_subparsers(required=True, title="commands")
 
     cflags_cmd = source_sub.add_parser("cflags", help="Get help setting up a C or C++ compiler to compile the Orca source.")
     cflags_cmd.add_argument("srcdir", nargs="?", default=src_dir(), help="the directory containing the Orca source code (defaults to system installation)")
@@ -54,7 +55,7 @@ def vendor_file_path(vendor_dir):
 
 
 def vendor_checksum(dir):
-    return dirhash(dir, excluded_extensions=["orcavendor"])
+    return dirsum(dir, excluded_extensions=["orcavendor"])
 
 
 def cflags(args):
@@ -104,86 +105,9 @@ def cflags(args):
     print()
     print("Complete clang example:")
     print()
-    print(f"clang --target=wasm32 --no-standard-libraries -mbulk-memory -g -O2 -D__ORCA__ -Wl,--no-entry -Wl,--export-dynamic -isystem {sysinclude} -I {include} -I {extinclude} {orcac} {libcsource} your-main.c")
+    print(f"clang --target=wasm32 --no-standard-libraries -mbulk-memory -g -O2 -D__ORCA__ -Wl,--no-entry -Wl,--export-dynamic -isystem \"{sysinclude}\" -I \"{include}\" -I \"{extinclude}\" \"{orcac}\" \"{libcsource}\" your-main.c")
     print()
     if not path_contains(os.getcwd(), args.srcdir):
         print("If these paths look crazy to you, consider vendoring the source code into your")
         print("project using `orca source vendor`.")
         print()
-
-
-# -----------------------------------------------------------------------------
-# Directory-hashing implementation pulled from the checksumdir package on pypi.
-# Licensed under the MIT license.
-# -----------------------------------------------------------------------------
-
-def dirhash(
-    dirname,
-    hash_func=hashlib.sha1,
-    excluded_files=None,
-    ignore_hidden=False,
-    followlinks=False,
-    excluded_extensions=None,
-    include_paths=False
-):
-    if not excluded_files:
-        excluded_files = []
-
-    if not excluded_extensions:
-        excluded_extensions = []
-
-    if not os.path.isdir(dirname):
-        raise TypeError("{} is not a directory.".format(dirname))
-
-    hashvalues = []
-    for root, dirs, files in os.walk(dirname, topdown=True, followlinks=followlinks):
-        if ignore_hidden and re.search(r"/\.", root):
-            continue
-
-        dirs.sort()
-        files.sort()
-
-        for fname in files:
-            if ignore_hidden and fname.startswith("."):
-                continue
-
-            if fname.split(".")[-1:][0] in excluded_extensions:
-                continue
-
-            if fname in excluded_files:
-                continue
-
-            hashvalues.append(_filehash(os.path.join(root, fname), hash_func))
-
-            if include_paths:
-                hasher = hash_func()
-                # get the resulting relative path into array of elements
-                path_list = os.path.relpath(os.path.join(root, fname)).split(os.sep)
-                # compute the hash on joined list, removes all os specific separators
-                hasher.update(''.join(path_list).encode('utf-8'))
-                hashvalues.append(hasher.hexdigest())
-
-    return _reduce_hash(hashvalues, hash_func)
-
-
-def _filehash(filepath, hashfunc):
-    hasher = hashfunc()
-    blocksize = 64 * 1024
-
-    if not os.path.exists(filepath):
-        return hasher.hexdigest()
-
-    with open(filepath, "rb") as fp:
-        while True:
-            data = fp.read(blocksize)
-            if not data:
-                break
-            hasher.update(data)
-    return hasher.hexdigest()
-
-
-def _reduce_hash(hashlist, hashfunc):
-    hasher = hashfunc()
-    for hashvalue in sorted(hashlist):
-        hasher.update(hashvalue.encode("utf-8"))
-    return hasher.hexdigest()

src/app/app.c

@@ -188,7 +188,7 @@ oc_key_code oc_scancode_to_keycode(oc_scan_code scanCode)
     return (oc_appData.keyMap[scanCode]);
 }
 
-#define OC_DEFAULT_KEYMAP_ENTRY(sc, sv, ...) [(int) sc] = (oc_key_code)sc,
+#define OC_DEFAULT_KEYMAP_ENTRY(sc, sv, kc, ...) [(int) sc] = OC_VA_NOPT(sv, ##__VA_ARGS__) __VA_ARGS__,
 
 oc_key_code oc_defaultKeyMap[OC_SCANCODE_COUNT] = {
     OC_KEY_TABLE(OC_DEFAULT_KEYMAP_ENTRY)

src/ext/wasm3/source/m3_config_platforms.h

@@ -121,7 +121,7 @@ typedef int8_t          i8;
 # if defined (M3_COMPILER_MSVC)
 #   define vectorcall   // For MSVC, better not to specify any call convention
 # elif defined(__x86_64__)
-#   define vectorcall   __attribute__((aligned(32)))
+#   define vectorcall
 //# elif defined(__riscv) && (__riscv_xlen == 64)
 //#   define vectorcall   __attribute__((aligned(16)))
 # elif defined(__MINGW32__)

src/graphics/graphics.h

@@ -110,8 +110,8 @@ ORCA_API void oc_surface_set_hidden(oc_surface surface, bool hidden);
 
 #else
 
-ORCA_API oc_surface oc_surface_canvas(); //DOC: creates a surface for use with the canvas API
-ORCA_API oc_surface oc_surface_gles();   //DOC: create a surface for use with GLES API
+ORCA_API oc_surface oc_surface_canvas(void); //DOC: creates a surface for use with the canvas API
+ORCA_API oc_surface oc_surface_gles(void);   //DOC: create a surface for use with GLES API
 
 #endif
 
@@ -281,8 +281,9 @@ typedef struct oc_image_region
 } oc_image_region;
 
 ORCA_API oc_image_region oc_image_atlas_alloc_from_rgba8(oc_rect_atlas* atlas, oc_image backingImage, u32 width, u32 height, u8* pixels);
-ORCA_API oc_image_region oc_image_atlas_alloc_from_data(oc_rect_atlas* atlas, oc_image backingImage, oc_str8 data, bool flip);
-ORCA_API oc_image_region oc_image_atlas_alloc_from_file(oc_rect_atlas* atlas, oc_image backingImage, oc_str8 path, bool flip);
+ORCA_API oc_image_region oc_image_atlas_alloc_from_memory(oc_rect_atlas* atlas, oc_image backingImage, oc_str8 mem, bool flip);
+ORCA_API oc_image_region oc_image_atlas_alloc_from_file(oc_rect_atlas* atlas, oc_image backingImage, oc_file file, bool flip);
+ORCA_API oc_image_region oc_image_atlas_alloc_from_path(oc_rect_atlas* atlas, oc_image backingImage, oc_str8 path, bool flip);
 ORCA_API void oc_image_atlas_recycle(oc_rect_atlas* atlas, oc_image_region imageRgn);
 
 //------------------------------------------------------------------------------------------

src/graphics/graphics_common.c

@@ -1887,16 +1887,14 @@ oc_image_region oc_image_atlas_alloc_from_rgba8(oc_rect_atlas* atlas, oc_image b
     return (imageRgn);
 }
 
-#if !OC_PLATFORM_ORCA
-
-oc_image_region oc_image_atlas_alloc_from_data(oc_rect_atlas* atlas, oc_image backingImage, oc_str8 data, bool flip)
+oc_image_region oc_image_atlas_alloc_from_memory(oc_rect_atlas* atlas, oc_image backingImage, oc_str8 mem, bool flip)
 {
     oc_image_region imageRgn = { 0 };
 
-    stbi_set_flip_vertically_on_load(flip ? 1 : 0);
-
     int width, height, channels;
-    u8* pixels = stbi_load_from_memory((u8*)data.ptr, data.len, &width, &height, &channels, 4);
+
+    stbi_set_flip_vertically_on_load(flip ? 1 : 0);
+    u8* pixels = stbi_load_from_memory((u8*)mem.ptr, mem.len, &width, &height, &channels, 4);
     if(pixels)
     {
         imageRgn = oc_image_atlas_alloc_from_rgba8(atlas, backingImage, width, height, pixels);
@@ -1905,27 +1903,45 @@ oc_image_region oc_image_atlas_alloc_from_data(oc_rect_atlas* atlas, oc_image ba
     return (imageRgn);
 }
 
-oc_image_region oc_image_atlas_alloc_from_file(oc_rect_atlas* atlas, oc_image backingImage, oc_str8 path, bool flip)
+oc_image_region oc_image_atlas_alloc_from_file(oc_rect_atlas* atlas, oc_image backingImage, oc_file file, bool flip)
 {
     oc_image_region imageRgn = { 0 };
 
-    stbi_set_flip_vertically_on_load(flip ? 1 : 0);
-
     oc_arena_scope scratch = oc_scratch_begin();
 
-    const char* cpath = oc_str8_to_cstring(scratch.arena, path);
-    int width, height, channels;
-    u8* pixels = stbi_load(cpath, &width, &height, &channels, 4);
-    oc_scratch_end(scratch);
+    u64 size = oc_file_size(file);
+    char* buffer = oc_arena_push(scratch.arena, size);
+    u64 read = oc_file_read(file, size, buffer);
 
-    if(pixels)
+    if(read != size)
     {
-        imageRgn = oc_image_atlas_alloc_from_rgba8(atlas, backingImage, width, height, pixels);
-        free(pixels);
+        oc_log_error("Couldn't read image data\n");
     }
+    else
+    {
+        imageRgn = oc_image_atlas_alloc_from_memory(atlas, backingImage, oc_str8_from_buffer(size, buffer), flip);
+    }
+
+    oc_scratch_end(scratch);
+    return (imageRgn);
+}
+
+oc_image_region oc_image_atlas_alloc_from_path(oc_rect_atlas* atlas, oc_image backingImage, oc_str8 path, bool flip)
+{
+    oc_image_region imageRgn = { 0 };
+
+    oc_file file = oc_file_open(path, OC_FILE_ACCESS_READ, OC_FILE_OPEN_NONE);
+    if(oc_file_last_error(file) != OC_IO_OK)
+    {
+        oc_log_error("Could not open file %*.s\n", oc_str8_ip(path));
+    }
+    else
+    {
+        imageRgn = oc_image_atlas_alloc_from_file(atlas, backingImage, file, flip);
+    }
+    oc_file_close(file);
     return (imageRgn);
 }
-#endif // !OC_PLATFORM_ORCA
 
 void oc_image_atlas_recycle(oc_rect_atlas* atlas, oc_image_region imageRgn)
 {

src/graphics/mtl_renderer.m

@@ -15,9 +15,13 @@
 
 #include "mtl_renderer.h"
 
-const int OC_MTL_INPUT_BUFFERS_COUNT = 3,
-          OC_MTL_TILE_SIZE = 16,
-          OC_MTL_MSAA_COUNT = 8;
+enum
+{
+    OC_MTL_INPUT_BUFFERS_COUNT = 3,
+    OC_MTL_TILE_SIZE = 16,
+    OC_MTL_MSAA_COUNT = 8,
+    OC_MTL_OFFSET_CURVE_SAMPLE_COUNT = 5,
+};
 
 typedef struct oc_mtl_canvas_backend
 {
@@ -511,8 +515,7 @@ void oc_mtl_render_stroke_quadratic(oc_mtl_canvas_backend* backend, oc_vec2* p)
     }
     else
     {
-        const int CHECK_SAMPLE_COUNT = 5;
-        f32 checkSamples[CHECK_SAMPLE_COUNT] = { 1. / 6, 2. / 6, 3. / 6, 4. / 6, 5. / 6 };
+        f32 checkSamples[OC_MTL_OFFSET_CURVE_SAMPLE_COUNT] = { 1. / 6, 2. / 6, 3. / 6, 4. / 6, 5. / 6 };
 
         f32 d2LowBound = oc_square(0.5 * width - tolerance);
         f32 d2HighBound = oc_square(0.5 * width + tolerance);
@@ -520,7 +523,7 @@ void oc_mtl_render_stroke_quadratic(oc_mtl_canvas_backend* backend, oc_vec2* p)
         f32 maxOvershoot = 0;
         f32 maxOvershootParameter = 0;
 
-        for(int i = 0; i < CHECK_SAMPLE_COUNT; i++)
+        for(int i = 0; i < OC_MTL_OFFSET_CURVE_SAMPLE_COUNT; i++)
         {
             f32 t = checkSamples[i];
 
@@ -613,8 +616,7 @@ void oc_mtl_render_stroke_cubic(oc_mtl_canvas_backend* backend, oc_vec2* p)
     }
     else
     {
-        const int CHECK_SAMPLE_COUNT = 5;
-        f32 checkSamples[CHECK_SAMPLE_COUNT] = { 1. / 6, 2. / 6, 3. / 6, 4. / 6, 5. / 6 };
+        f32 checkSamples[OC_MTL_OFFSET_CURVE_SAMPLE_COUNT] = { 1. / 6, 2. / 6, 3. / 6, 4. / 6, 5. / 6 };
 
         f32 d2LowBound = oc_square(0.5 * width - tolerance);
         f32 d2HighBound = oc_square(0.5 * width + tolerance);
@@ -622,7 +624,7 @@ void oc_mtl_render_stroke_cubic(oc_mtl_canvas_backend* backend, oc_vec2* p)
         f32 maxOvershoot = 0;
         f32 maxOvershootParameter = 0;
 
-        for(int i = 0; i < CHECK_SAMPLE_COUNT; i++)
+        for(int i = 0; i < OC_MTL_OFFSET_CURVE_SAMPLE_COUNT; i++)
         {
             f32 t = checkSamples[i];
 

src/graphics/win32_vsync.c

@@ -67,7 +67,7 @@ void oc_vsync_init(void)
         adapter = adapterFallback;
         if(adapter)
         {
-            oc_log_info("Couldn't find a dedicated hardware DXGI adapater, using software fallback.");
+            oc_log_info("Couldn't find a dedicated hardware DXGI adapater, using software fallback.\n");
         }
     }
 
@@ -80,7 +80,7 @@ void oc_vsync_init(void)
     }
     else
     {
-        oc_log_info("Couldn't find any DXGI adapters - vsync will be unavailable.");
+        oc_log_info("Couldn't find any DXGI adapters - vsync will be unavailable.\n");
         IDXGIFactory_Release(factory);
     }
 }
@@ -92,14 +92,14 @@ void oc_vsync_wait(oc_window window)
         oc_window_data* windowData = oc_window_ptr_from_handle(window);
         if(!windowData)
         {
-            oc_log_error("Failed to get window ptr - assuming window was closed.");
+            oc_log_error("Failed to get window ptr - assuming window was closed.\n");
             return;
         }
 
         RECT windowRect = { 0 };
         if(GetWindowRect(windowData->win32.hWnd, &windowRect) == FALSE)
         {
-            oc_log_error("Failed to get window rect with error: %d.", GetLastError());
+            oc_log_error("Failed to get window rect with error: %d.\n", GetLastError());
             return;
         }
 
@@ -127,7 +127,7 @@ void oc_vsync_wait(oc_window window)
             }
             else
             {
-                oc_log_error("Failed to get IDXGIOutput desc with error: %d", hr);
+                oc_log_error("Failed to get IDXGIOutput desc with error: %d\n", hr);
             }
 
             if(selectedOutput != output)
@@ -143,14 +143,15 @@ void oc_vsync_wait(oc_window window)
             if(FAILED(hr))
             {
                 // TODO(reuben) - fall back to software timer
-                oc_log_warning("Failed to wait for vblank with error: %d", hr);
+                oc_log_warning("Failed to wait for vblank with error: %d\n", hr);
             }
 
             IDXGIOutput_Release(selectedOutput);
         }
-        else
+        else if(output)
         {
-            oc_log_warning("No outputs found. Were all monitors unplugged?");
+            // just use the last output found as a fallback - the window may be minimized or not otherwise visible on any monitor
+            IDXGIOutput_WaitForVBlank(output);
         }
     }
 }

src/libc-shim/include/math.h

@@ -2,13 +2,12 @@
 #define _MATH_H
 
 #ifdef __cplusplus
-extern "C"
-{
+extern "C" {
 #endif
 
-    // NOTE(orca): not doing anything fancy for float_t and double_t
-    typedef float float_t;
-    typedef double double_t;
+// NOTE(orca): not doing anything fancy for float_t and double_t
+typedef float float_t;
+typedef double double_t;
 
 #define NAN __builtin_nanf("")
 #define INFINITY __builtin_inff()
@@ -19,33 +18,33 @@ extern "C"
 #define FP_SUBNORMAL 3
 #define FP_NORMAL 4
 
-    int __fpclassify(double);
-    int __fpclassifyf(float);
-    int __fpclassifyl(long double);
+int __fpclassify(double);
+int __fpclassifyf(float);
+int __fpclassifyl(long double);
 
-    static __inline unsigned __FLOAT_BITS(float __f)
+static __inline unsigned __FLOAT_BITS(float __f)
+{
+    union
     {
-        union
-        {
-            float __f;
-            unsigned __i;
-        } __u;
+        float __f;
+        unsigned __i;
+    } __u;
 
-        __u.__f = __f;
-        return __u.__i;
-    }
+    __u.__f = __f;
+    return __u.__i;
+}
 
-    static __inline unsigned long long __DOUBLE_BITS(double __f)
+static __inline unsigned long long __DOUBLE_BITS(double __f)
+{
+    union
     {
-        union
-        {
-            double __f;
-            unsigned long long __i;
-        } __u;
+        double __f;
+        unsigned long long __i;
+    } __u;
 
-        __u.__f = __f;
-        return __u.__i;
-    }
+    __u.__f = __f;
+    return __u.__i;
+}
 
 #define fpclassify(x) (                                                                           \
     sizeof(x) == sizeof(float) ? __fpclassifyf(x) : sizeof(x) == sizeof(double) ? __fpclassify(x) \
@@ -59,29 +58,53 @@ extern "C"
     sizeof(x) == sizeof(float) ? (__FLOAT_BITS(x) & 0x7fffffff) > 0x7f800000 : sizeof(x) == sizeof(double) ? (__DOUBLE_BITS(x) & -1ULL >> 1) > 0x7ffULL << 52 \
                                                                                                            : __fpclassifyl(x) == FP_NAN)
 
-    double acos(double);
+double fabs(double);
+float fabsf(float);
 
-    double ceil(double);
+double acos(double);
+float acosf(float);
 
-    double cos(double);
-    float cosf(float);
+double cbrt(double);
+float cbrtf(float);
 
-    double fabs(double);
-    float fabsf(float);
+double ceil(double);
 
-    double floor(double);
+double cos(double);
+float cosf(float);
 
-    double fmod(double, double);
+double floor(double);
 
-    double pow(double, double);
+double fmod(double, double);
 
-    double scalbn(double, int);
+double log(double);
+float logf(float);
+double log2(double);
+float log2f(float);
 
-    double sin(double);
-    float sinf(float);
+double pow(double, double);
+float powf(float, float);
 
-    double sqrt(double);
-    float sqrtf(float);
+double exp(double);
+float expf(float);
+
+double scalbn(double, int);
+
+double sin(double);
+float sinf(float);
+
+double asin(double);
+float asinf(float);
+
+double tan(double);
+float tanf(float);
+
+double atan(double);
+float atanf(float);
+double atan2(double, double);
+float atan2f(float, float);
+
+double sqrt(double);
+float sqrtf(float);
 
 #define M_E 2.7182818284590452354         /* e */
 #define M_LOG2E 1.4426950408889634074     /* log_2 e */
@@ -97,6 +120,11 @@ extern "C"
 #define M_SQRT2 1.41421356237309504880    /* sqrt(2) */
 #define M_SQRT1_2 0.70710678118654752440  /* 1/sqrt(2) */
 
+//NOTE(orca) - implementation details
+typedef unsigned uint32_t;
+double __math_divzero(uint32_t sign);
+float __math_divzerof(uint32_t sign);
+
 #ifdef __cplusplus
 }
 #endif

src/libc-shim/include/stdlib.h

@@ -1,14 +1,20 @@
 #ifndef _STDLIB_H
 #define _STDLIB_H
 
+#include <stddef.h>
+
 #ifdef __cplusplus
-extern "C"
-{
+extern "C" {
 #endif
 
 #define abort(...) OC_ABORT(__VA_ARGS__)
 
-    int abs(int);
+int abs(int);
+
+void* malloc(size_t);
+void* realloc(void*, size_t);
+void* calloc(size_t count, size_t size);
+void free(void*);
 
 #ifdef __cplusplus
 }

src/libc-shim/include/string.h

@@ -1,5 +1,9 @@
 #include "stb/stb_sprintf.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 void* memset(void* b, int c, size_t n);
 void* memcpy(void* __restrict dst, const void* __restrict src, size_t n);
 void* memmove(void* dst, const void* src, size_t n);
@@ -12,3 +16,7 @@ char* strcpy(char* __restrict s1, const char* __restrict s2);
 
 #define snprintf stbsp_snprintf
 #define vsnprintf stbsp_vsnprintf
+
+#ifdef __cplusplus
+} // extern "C"
+#endif

src/libc-shim/src/.clang-format

@@ -0,0 +1,3 @@
+---
+DisableFormat: true
+SortIncludes: Never

src/libc-shim/src/__math_divzero.c

@@ -0,0 +1,7 @@
+#include "libm.h"
+
+double __math_divzero(uint32_t sign)
+{
+	// NOTE(orca): no fp barriers
+	return (sign ? -1.0 : 1.0) / 0.0;
+}

src/libc-shim/src/__math_divzerof.c

@@ -0,0 +1,7 @@
+#include "libm.h"
+
+float __math_divzerof(uint32_t sign)
+{
+	// NOTE(orca): no fp barriers
+	return (sign ? -1.0f : 1.0f) / 0.0f;
+}

src/libc-shim/src/__math_oflowf.c

@@ -0,0 +1,6 @@
+#include "libm.h"
+
+float __math_oflowf(uint32_t sign)
+{
+	return __math_xflowf(sign, 0x1p97f);
+}

src/libc-shim/src/__math_uflowf.c

@@ -0,0 +1,6 @@
+#include "libm.h"
+
+float __math_uflowf(uint32_t sign)
+{
+	return __math_xflowf(sign, 0x1p-95f);
+}

src/libc-shim/src/__math_xflowf.c

@@ -0,0 +1,8 @@
+#include "libm.h"
+
+float __math_xflowf(uint32_t sign, float y)
+{
+    // NOTE(orca): no fp barriers
+    // return eval_as_double(fp_barrier(sign ? -y : y) * y);
+    return eval_as_float((sign ? -y : y) * y);
+}

src/libc-shim/src/__tan.c

@@ -0,0 +1,110 @@
+/* origin: FreeBSD /usr/src/lib/msun/src/k_tan.c */
+/*
+ * ====================================================
+ * Copyright 2004 Sun Microsystems, Inc.  All Rights Reserved.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+/* __tan( x, y, k )
+ * kernel tan function on ~[-pi/4, pi/4] (except on -0), pi/4 ~ 0.7854
+ * Input x is assumed to be bounded by ~pi/4 in magnitude.
+ * Input y is the tail of x.
+ * Input odd indicates whether tan (if odd = 0) or -1/tan (if odd = 1) is returned.
+ *
+ * Algorithm
+ *      1. Since tan(-x) = -tan(x), we need only to consider positive x.
+ *      2. Callers must return tan(-0) = -0 without calling here since our
+ *         odd polynomial is not evaluated in a way that preserves -0.
+ *         Callers may do the optimization tan(x) ~ x for tiny x.
+ *      3. tan(x) is approximated by a odd polynomial of degree 27 on
+ *         [0,0.67434]
+ *                               3             27
+ *              tan(x) ~ x + T1*x + ... + T13*x
+ *         where
+ *
+ *              |tan(x)         2     4            26   |     -59.2
+ *              |----- - (1+T1*x +T2*x +.... +T13*x    )| <= 2
+ *              |  x                                    |
+ *
+ *         Note: tan(x+y) = tan(x) + tan'(x)*y
+ *                        ~ tan(x) + (1+x*x)*y
+ *         Therefore, for better accuracy in computing tan(x+y), let
+ *                   3      2      2       2       2
+ *              r = x *(T2+x *(T3+x *(...+x *(T12+x *T13))))
+ *         then
+ *                                  3    2
+ *              tan(x+y) = x + (T1*x + (x *(r+y)+y))
+ *
+ *      4. For x in [0.67434,pi/4],  let y = pi/4 - x, then
+ *              tan(x) = tan(pi/4-y) = (1-tan(y))/(1+tan(y))
+ *                     = 1 - 2*(tan(y) - (tan(y)^2)/(1+tan(y)))
+ */
+
+#include "libm.h"
+
+static const double T[] = {
+             3.33333333333334091986e-01, /* 3FD55555, 55555563 */
+             1.33333333333201242699e-01, /* 3FC11111, 1110FE7A */
+             5.39682539762260521377e-02, /* 3FABA1BA, 1BB341FE */
+             2.18694882948595424599e-02, /* 3F9664F4, 8406D637 */
+             8.86323982359930005737e-03, /* 3F8226E3, E96E8493 */
+             3.59207910759131235356e-03, /* 3F6D6D22, C9560328 */
+             1.45620945432529025516e-03, /* 3F57DBC8, FEE08315 */
+             5.88041240820264096874e-04, /* 3F4344D8, F2F26501 */
+             2.46463134818469906812e-04, /* 3F3026F7, 1A8D1068 */
+             7.81794442939557092300e-05, /* 3F147E88, A03792A6 */
+             7.14072491382608190305e-05, /* 3F12B80F, 32F0A7E9 */
+            -1.85586374855275456654e-05, /* BEF375CB, DB605373 */
+             2.59073051863633712884e-05, /* 3EFB2A70, 74BF7AD4 */
+},
+pio4 =       7.85398163397448278999e-01, /* 3FE921FB, 54442D18 */
+pio4lo =     3.06161699786838301793e-17; /* 3C81A626, 33145C07 */
+
+double __tan(double x, double y, int odd)
+{
+	double_t z, r, v, w, s, a;
+	double w0, a0;
+	uint32_t hx;
+	int big, sign;
+
+	GET_HIGH_WORD(hx,x);
+	big = (hx&0x7fffffff) >= 0x3FE59428; /* |x| >= 0.6744 */
+	if (big) {
+		sign = hx>>31;
+		if (sign) {
+			x = -x;
+			y = -y;
+		}
+		x = (pio4 - x) + (pio4lo - y);
+		y = 0.0;
+	}
+	z = x * x;
+	w = z * z;
+	/*
+	 * Break x^5*(T[1]+x^2*T[2]+...) into
+	 * x^5(T[1]+x^4*T[3]+...+x^20*T[11]) +
+	 * x^5(x^2*(T[2]+x^4*T[4]+...+x^22*[T12]))
+	 */
+	r = T[1] + w*(T[3] + w*(T[5] + w*(T[7] + w*(T[9] + w*T[11]))));
+	v = z*(T[2] + w*(T[4] + w*(T[6] + w*(T[8] + w*(T[10] + w*T[12])))));
+	s = z * x;
+	r = y + z*(s*(r + v) + y) + s*T[0];
+	w = x + r;
+	if (big) {
+		s = 1 - 2*odd;
+		v = s - 2.0 * (x + (r - w*w/(w + s)));
+		return sign ? -v : v;
+	}
+	if (!odd)
+		return w;
+	/* -1.0/(x+r) has up to 2ulp error, so compute it accurately */
+	w0 = w;
+	SET_LOW_WORD(w0, 0);
+	v = r - (w0 - x);       /* w0+v = r+x */
+	a0 = a = -1.0 / w;
+	SET_LOW_WORD(a0, 0);
+	return a0 + a*(1.0 + a0*w0 + a0*v);
+}

src/libc-shim/src/__tandf.c

@@ -0,0 +1,54 @@
+/* origin: FreeBSD /usr/src/lib/msun/src/k_tanf.c */
+/*
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ * Optimized by Bruce D. Evans.
+ */
+/*
+ * ====================================================
+ * Copyright 2004 Sun Microsystems, Inc.  All Rights Reserved.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#include "libm.h"
+
+/* |tan(x)/x - t(x)| < 2**-25.5 (~[-2e-08, 2e-08]). */
+static const double T[] = {
+  0x15554d3418c99f.0p-54, /* 0.333331395030791399758 */
+  0x1112fd38999f72.0p-55, /* 0.133392002712976742718 */
+  0x1b54c91d865afe.0p-57, /* 0.0533812378445670393523 */
+  0x191df3908c33ce.0p-58, /* 0.0245283181166547278873 */
+  0x185dadfcecf44e.0p-61, /* 0.00297435743359967304927 */
+  0x1362b9bf971bcd.0p-59, /* 0.00946564784943673166728 */
+};
+
+float __tandf(double x, int odd)
+{
+	double_t z,r,w,s,t,u;
+
+	z = x*x;
+	/*
+	 * Split up the polynomial into small independent terms to give
+	 * opportunities for parallel evaluation.  The chosen splitting is
+	 * micro-optimized for Athlons (XP, X64).  It costs 2 multiplications
+	 * relative to Horner's method on sequential machines.
+	 *
+	 * We add the small terms from lowest degree up for efficiency on
+	 * non-sequential machines (the lowest degree terms tend to be ready
+	 * earlier).  Apart from this, we don't care about order of
+	 * operations, and don't need to to care since we have precision to
+	 * spare.  However, the chosen splitting is good for accuracy too,
+	 * and would give results as accurate as Horner's method if the
+	 * small terms were added from highest degree down.
+	 */
+	r = T[4] + z*T[5];
+	t = T[2] + z*T[3];
+	w = z*z;
+	s = z*x;
+	u = T[0] + z*T[1];
+	r = (x + s*u) + (s*w)*(t + w*r);
+	return odd ? -1.0/r : r;
+}

src/libc-shim/src/acosf.c

@@ -0,0 +1,71 @@
+/* origin: FreeBSD /usr/src/lib/msun/src/e_acosf.c */
+/*
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#include "libm.h"
+
+static const float
+pio2_hi = 1.5707962513e+00, /* 0x3fc90fda */
+pio2_lo = 7.5497894159e-08, /* 0x33a22168 */
+pS0 =  1.6666586697e-01,
+pS1 = -4.2743422091e-02,
+pS2 = -8.6563630030e-03,
+qS1 = -7.0662963390e-01;
+
+static float R(float z)
+{
+	float_t p, q;
+	p = z*(pS0+z*(pS1+z*pS2));
+	q = 1.0f+z*qS1;
+	return p/q;
+}
+
+float acosf(float x)
+{
+	float z,w,s,c,df;
+	uint32_t hx,ix;
+
+	GET_FLOAT_WORD(hx, x);
+	ix = hx & 0x7fffffff;
+	/* |x| >= 1 or nan */
+	if (ix >= 0x3f800000) {
+		if (ix == 0x3f800000) {
+			if (hx >> 31)
+				return 2*pio2_hi + 0x1p-120f;
+			return 0;
+		}
+		return 0/(x-x);
+	}
+	/* |x| < 0.5 */
+	if (ix < 0x3f000000) {
+		if (ix <= 0x32800000) /* |x| < 2**-26 */
+			return pio2_hi + 0x1p-120f;
+		return pio2_hi - (x - (pio2_lo-x*R(x*x)));
+	}
+	/* x < -0.5 */
+	if (hx >> 31) {
+		z = (1+x)*0.5f;
+		s = sqrtf(z);
+		w = R(z)*s-pio2_lo;
+		return 2*(pio2_hi - (s+w));
+	}
+	/* x > 0.5 */
+	z = (1-x)*0.5f;
+	s = sqrtf(z);
+	GET_FLOAT_WORD(hx,s);
+	SET_FLOAT_WORD(df,hx&0xfffff000);
+	c = (z-df*df)/(s+df);
+	w = R(z)*s+c;
+	return 2*(df+w);
+}

src/libc-shim/src/asin.c

@@ -0,0 +1,107 @@
+/* origin: FreeBSD /usr/src/lib/msun/src/e_asin.c */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunSoft, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+/* asin(x)
+ * Method :
+ *      Since  asin(x) = x + x^3/6 + x^5*3/40 + x^7*15/336 + ...
+ *      we approximate asin(x) on [0,0.5] by
+ *              asin(x) = x + x*x^2*R(x^2)
+ *      where
+ *              R(x^2) is a rational approximation of (asin(x)-x)/x^3
+ *      and its remez error is bounded by
+ *              |(asin(x)-x)/x^3 - R(x^2)| < 2^(-58.75)
+ *
+ *      For x in [0.5,1]
+ *              asin(x) = pi/2-2*asin(sqrt((1-x)/2))
+ *      Let y = (1-x), z = y/2, s := sqrt(z), and pio2_hi+pio2_lo=pi/2;
+ *      then for x>0.98
+ *              asin(x) = pi/2 - 2*(s+s*z*R(z))
+ *                      = pio2_hi - (2*(s+s*z*R(z)) - pio2_lo)
+ *      For x<=0.98, let pio4_hi = pio2_hi/2, then
+ *              f = hi part of s;
+ *              c = sqrt(z) - f = (z-f*f)/(s+f)         ...f+c=sqrt(z)
+ *      and
+ *              asin(x) = pi/2 - 2*(s+s*z*R(z))
+ *                      = pio4_hi+(pio4-2s)-(2s*z*R(z)-pio2_lo)
+ *                      = pio4_hi+(pio4-2f)-(2s*z*R(z)-(pio2_lo+2c))
+ *
+ * Special cases:
+ *      if x is NaN, return x itself;
+ *      if |x|>1, return NaN with invalid signal.
+ *
+ */
+
+#include "libm.h"
+
+static const double
+pio2_hi = 1.57079632679489655800e+00, /* 0x3FF921FB, 0x54442D18 */
+pio2_lo = 6.12323399573676603587e-17, /* 0x3C91A626, 0x33145C07 */
+/* coefficients for R(x^2) */
+pS0 =  1.66666666666666657415e-01, /* 0x3FC55555, 0x55555555 */
+pS1 = -3.25565818622400915405e-01, /* 0xBFD4D612, 0x03EB6F7D */
+pS2 =  2.01212532134862925881e-01, /* 0x3FC9C155, 0x0E884455 */
+pS3 = -4.00555345006794114027e-02, /* 0xBFA48228, 0xB5688F3B */
+pS4 =  7.91534994289814532176e-04, /* 0x3F49EFE0, 0x7501B288 */
+pS5 =  3.47933107596021167570e-05, /* 0x3F023DE1, 0x0DFDF709 */
+qS1 = -2.40339491173441421878e+00, /* 0xC0033A27, 0x1C8A2D4B */
+qS2 =  2.02094576023350569471e+00, /* 0x40002AE5, 0x9C598AC8 */
+qS3 = -6.88283971605453293030e-01, /* 0xBFE6066C, 0x1B8D0159 */
+qS4 =  7.70381505559019352791e-02; /* 0x3FB3B8C5, 0xB12E9282 */
+
+static double R(double z)
+{
+	double_t p, q;
+	p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5)))));
+	q = 1.0+z*(qS1+z*(qS2+z*(qS3+z*qS4)));
+	return p/q;
+}
+
+double asin(double x)
+{
+	double z,r,s;
+	uint32_t hx,ix;
+
+	GET_HIGH_WORD(hx, x);
+	ix = hx & 0x7fffffff;
+	/* |x| >= 1 or nan */
+	if (ix >= 0x3ff00000) {
+		uint32_t lx;
+		GET_LOW_WORD(lx, x);
+		if ((ix-0x3ff00000 | lx) == 0)
+			/* asin(1) = +-pi/2 with inexact */
+			return x*pio2_hi + 0x1p-120f;
+		return 0/(x-x);
+	}
+	/* |x| < 0.5 */
+	if (ix < 0x3fe00000) {
+		/* if 0x1p-1022 <= |x| < 0x1p-26, avoid raising underflow */
+		if (ix < 0x3e500000 && ix >= 0x00100000)
+			return x;
+		return x + x*R(x*x);
+	}
+	/* 1 > |x| >= 0.5 */
+	z = (1 - fabs(x))*0.5;
+	s = sqrt(z);
+	r = R(z);
+	if (ix >= 0x3fef3333) {  /* if |x| > 0.975 */
+		x = pio2_hi-(2*(s+s*r)-pio2_lo);
+	} else {
+		double f,c;
+		/* f+c = sqrt(z) */
+		f = s;
+		SET_LOW_WORD(f,0);
+		c = (z-f*f)/(s+f);
+		x = 0.5*pio2_hi - (2*s*r - (pio2_lo-2*c) - (0.5*pio2_hi-2*f));
+	}
+	if (hx >> 31)
+		return -x;
+	return x;
+}

src/libc-shim/src/asinf.c

@@ -0,0 +1,61 @@
+/* origin: FreeBSD /usr/src/lib/msun/src/e_asinf.c */
+/*
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+#include "libm.h"
+
+static const double
+pio2 = 1.570796326794896558e+00;
+
+static const float
+/* coefficients for R(x^2) */
+pS0 =  1.6666586697e-01,
+pS1 = -4.2743422091e-02,
+pS2 = -8.6563630030e-03,
+qS1 = -7.0662963390e-01;
+
+static float R(float z)
+{
+	float_t p, q;
+	p = z*(pS0+z*(pS1+z*pS2));
+	q = 1.0f+z*qS1;
+	return p/q;
+}
+
+float asinf(float x)
+{
+	double s;
+	float z;
+	uint32_t hx,ix;
+
+	GET_FLOAT_WORD(hx, x);
+	ix = hx & 0x7fffffff;
+	if (ix >= 0x3f800000) {  /* |x| >= 1 */
+		if (ix == 0x3f800000)  /* |x| == 1 */
+			return x*pio2 + 0x1p-120f;  /* asin(+-1) = +-pi/2 with inexact */
+		return 0/(x-x);  /* asin(|x|>1) is NaN */
+	}
+	if (ix < 0x3f000000) {  /* |x| < 0.5 */
+		/* if 0x1p-126 <= |x| < 0x1p-12, avoid raising underflow */
+		if (ix < 0x39800000 && ix >= 0x00800000)
+			return x;
+		return x + x*R(x*x);
+	}
+	/* 1 > |x| >= 0.5 */
+	z = (1 - fabsf(x))*0.5f;
+	s = sqrt(z);
+	x = pio2 - 2*(s+s*R(z));
+	if (hx >> 31)
+		return -x;
+	return x;
+}

src/libc-shim/src/atan.c

@@ -0,0 +1,116 @@
+/* origin: FreeBSD /usr/src/lib/msun/src/s_atan.c */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+/* atan(x)
+ * Method
+ *   1. Reduce x to positive by atan(x) = -atan(-x).
+ *   2. According to the integer k=4t+0.25 chopped, t=x, the argument
+ *      is further reduced to one of the following intervals and the
+ *      arctangent of t is evaluated by the corresponding formula:
+ *
+ *      [0,7/16]      atan(x) = t-t^3*(a1+t^2*(a2+...(a10+t^2*a11)...)
+ *      [7/16,11/16]  atan(x) = atan(1/2) + atan( (t-0.5)/(1+t/2) )
+ *      [11/16.19/16] atan(x) = atan( 1 ) + atan( (t-1)/(1+t) )
+ *      [19/16,39/16] atan(x) = atan(3/2) + atan( (t-1.5)/(1+1.5t) )
+ *      [39/16,INF]   atan(x) = atan(INF) + atan( -1/t )
+ *
+ * Constants:
+ * The hexadecimal values are the intended ones for the following
+ * constants. The decimal values may be used, provided that the
+ * compiler will convert from decimal to binary accurately enough
+ * to produce the hexadecimal values shown.
+ */
+
+
+#include "libm.h"
+
+static const double atanhi[] = {
+  4.63647609000806093515e-01, /* atan(0.5)hi 0x3FDDAC67, 0x0561BB4F */
+  7.85398163397448278999e-01, /* atan(1.0)hi 0x3FE921FB, 0x54442D18 */
+  9.82793723247329054082e-01, /* atan(1.5)hi 0x3FEF730B, 0xD281F69B */
+  1.57079632679489655800e+00, /* atan(inf)hi 0x3FF921FB, 0x54442D18 */
+};
+
+static const double atanlo[] = {
+  2.26987774529616870924e-17, /* atan(0.5)lo 0x3C7A2B7F, 0x222F65E2 */
+  3.06161699786838301793e-17, /* atan(1.0)lo 0x3C81A626, 0x33145C07 */
+  1.39033110312309984516e-17, /* atan(1.5)lo 0x3C700788, 0x7AF0CBBD */
+  6.12323399573676603587e-17, /* atan(inf)lo 0x3C91A626, 0x33145C07 */
+};
+
+static const double aT[] = {
+  3.33333333333329318027e-01, /* 0x3FD55555, 0x5555550D */
+ -1.99999999998764832476e-01, /* 0xBFC99999, 0x9998EBC4 */
+  1.42857142725034663711e-01, /* 0x3FC24924, 0x920083FF */
+ -1.11111104054623557880e-01, /* 0xBFBC71C6, 0xFE231671 */
+  9.09088713343650656196e-02, /* 0x3FB745CD, 0xC54C206E */
+ -7.69187620504482999495e-02, /* 0xBFB3B0F2, 0xAF749A6D */
+  6.66107313738753120669e-02, /* 0x3FB10D66, 0xA0D03D51 */
+ -5.83357013379057348645e-02, /* 0xBFADDE2D, 0x52DEFD9A */
+  4.97687799461593236017e-02, /* 0x3FA97B4B, 0x24760DEB */
+ -3.65315727442169155270e-02, /* 0xBFA2B444, 0x2C6A6C2F */
+  1.62858201153657823623e-02, /* 0x3F90AD3A, 0xE322DA11 */
+};
+
+double atan(double x)
+{
+	double_t w,s1,s2,z;
+	uint32_t ix,sign;
+	int id;
+
+	GET_HIGH_WORD(ix, x);
+	sign = ix >> 31;
+	ix &= 0x7fffffff;
+	if (ix >= 0x44100000) {   /* if |x| >= 2^66 */
+		if (isnan(x))
+			return x;
+		z = atanhi[3] + 0x1p-120f;
+		return sign ? -z : z;
+	}
+	if (ix < 0x3fdc0000) {    /* |x| < 0.4375 */
+		if (ix < 0x3e400000) {  /* |x| < 2^-27 */
+			if (ix < 0x00100000)
+				/* raise underflow for subnormal x */
+				FORCE_EVAL((float)x);
+			return x;
+		}
+		id = -1;
+	} else {
+		x = fabs(x);
+		if (ix < 0x3ff30000) {  /* |x| < 1.1875 */
+			if (ix < 0x3fe60000) {  /*  7/16 <= |x| < 11/16 */
+				id = 0;
+				x = (2.0*x-1.0)/(2.0+x);
+			} else {                /* 11/16 <= |x| < 19/16 */
+				id = 1;
+				x = (x-1.0)/(x+1.0);
+			}
+		} else {
+			if (ix < 0x40038000) {  /* |x| < 2.4375 */
+				id = 2;
+				x = (x-1.5)/(1.0+1.5*x);
+			} else {                /* 2.4375 <= |x| < 2^66 */
+				id = 3;
+				x = -1.0/x;
+			}
+		}
+	}
+	/* end of argument reduction */
+	z = x*x;
+	w = z*z;
+	/* break sum from i=0 to 10 aT[i]z**(i+1) into odd and even poly */
+	s1 = z*(aT[0]+w*(aT[2]+w*(aT[4]+w*(aT[6]+w*(aT[8]+w*aT[10])))));
+	s2 = w*(aT[1]+w*(aT[3]+w*(aT[5]+w*(aT[7]+w*aT[9]))));
+	if (id < 0)
+		return x - x*(s1+s2);
+	z = atanhi[id] - (x*(s1+s2) - atanlo[id] - x);
+	return sign ? -z : z;
+}

src/libc-shim/src/atan2.c

@@ -0,0 +1,107 @@
+/* origin: FreeBSD /usr/src/lib/msun/src/e_atan2.c */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunSoft, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ *
+ */
+/* atan2(y,x)
+ * Method :
+ *      1. Reduce y to positive by atan2(y,x)=-atan2(-y,x).
+ *      2. Reduce x to positive by (if x and y are unexceptional):
+ *              ARG (x+iy) = arctan(y/x)           ... if x > 0,
+ *              ARG (x+iy) = pi - arctan[y/(-x)]   ... if x < 0,
+ *
+ * Special cases:
+ *
+ *      ATAN2((anything), NaN ) is NaN;
+ *      ATAN2(NAN , (anything) ) is NaN;
+ *      ATAN2(+-0, +(anything but NaN)) is +-0  ;
+ *      ATAN2(+-0, -(anything but NaN)) is +-pi ;
+ *      ATAN2(+-(anything but 0 and NaN), 0) is +-pi/2;
+ *      ATAN2(+-(anything but INF and NaN), +INF) is +-0 ;
+ *      ATAN2(+-(anything but INF and NaN), -INF) is +-pi;
+ *      ATAN2(+-INF,+INF ) is +-pi/4 ;
+ *      ATAN2(+-INF,-INF ) is +-3pi/4;
+ *      ATAN2(+-INF, (anything but,0,NaN, and INF)) is +-pi/2;
+ *
+ * Constants:
+ * The hexadecimal values are the intended ones for the following
+ * constants. The decimal values may be used, provided that the
+ * compiler will convert from decimal to binary accurately enough
+ * to produce the hexadecimal values shown.
+ */
+
+#include "libm.h"
+
+static const double
+pi     = 3.1415926535897931160E+00, /* 0x400921FB, 0x54442D18 */
+pi_lo  = 1.2246467991473531772E-16; /* 0x3CA1A626, 0x33145C07 */
+
+double atan2(double y, double x)
+{
+	double z;
+	uint32_t m,lx,ly,ix,iy;
+
+	if (isnan(x) || isnan(y))
+		return x+y;
+	EXTRACT_WORDS(ix, lx, x);
+	EXTRACT_WORDS(iy, ly, y);
+	if ((ix-0x3ff00000 | lx) == 0)  /* x = 1.0 */
+		return atan(y);
+	m = ((iy>>31)&1) | ((ix>>30)&2);  /* 2*sign(x)+sign(y) */
+	ix = ix & 0x7fffffff;
+	iy = iy & 0x7fffffff;
+
+	/* when y = 0 */
+	if ((iy|ly) == 0) {
+		switch(m) {
+		case 0:
+		case 1: return y;   /* atan(+-0,+anything)=+-0 */
+		case 2: return  pi; /* atan(+0,-anything) = pi */
+		case 3: return -pi; /* atan(-0,-anything) =-pi */
+		}
+	}
+	/* when x = 0 */
+	if ((ix|lx) == 0)
+		return m&1 ? -pi/2 : pi/2;
+	/* when x is INF */
+	if (ix == 0x7ff00000) {
+		if (iy == 0x7ff00000) {
+			switch(m) {
+			case 0: return  pi/4;   /* atan(+INF,+INF) */
+			case 1: return -pi/4;   /* atan(-INF,+INF) */
+			case 2: return  3*pi/4; /* atan(+INF,-INF) */
+			case 3: return -3*pi/4; /* atan(-INF,-INF) */
+			}
+		} else {
+			switch(m) {
+			case 0: return  0.0; /* atan(+...,+INF) */
+			case 1: return -0.0; /* atan(-...,+INF) */
+			case 2: return  pi;  /* atan(+...,-INF) */
+			case 3: return -pi;  /* atan(-...,-INF) */
+			}
+		}
+	}
+	/* |y/x| > 0x1p64 */
+	if (ix+(64<<20) < iy || iy == 0x7ff00000)
+		return m&1 ? -pi/2 : pi/2;
+
+	/* z = atan(|y/x|) without spurious underflow */
+	if ((m&2) && iy+(64<<20) < ix)  /* |y/x| < 0x1p-64, x<0 */
+		z = 0;
+	else
+		z = atan(fabs(y/x));
+	switch (m) {
+	case 0: return z;              /* atan(+,+) */
+	case 1: return -z;             /* atan(-,+) */
+	case 2: return pi - (z-pi_lo); /* atan(+,-) */
+	default: /* case 3 */
+		return (z-pi_lo) - pi; /* atan(-,-) */
+	}
+}

src/libc-shim/src/atan2f.c

@@ -0,0 +1,83 @@
+/* origin: FreeBSD /usr/src/lib/msun/src/e_atan2f.c */
+/*
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#include "libm.h"
+
+static const float
+pi     = 3.1415927410e+00, /* 0x40490fdb */
+pi_lo  = -8.7422776573e-08; /* 0xb3bbbd2e */
+
+float atan2f(float y, float x)
+{
+	float z;
+	uint32_t m,ix,iy;
+
+	if (isnan(x) || isnan(y))
+		return x+y;
+	GET_FLOAT_WORD(ix, x);
+	GET_FLOAT_WORD(iy, y);
+	if (ix == 0x3f800000)  /* x=1.0 */
+		return atanf(y);
+	m = ((iy>>31)&1) | ((ix>>30)&2);  /* 2*sign(x)+sign(y) */
+	ix &= 0x7fffffff;
+	iy &= 0x7fffffff;
+
+	/* when y = 0 */
+	if (iy == 0) {
+		switch (m) {
+		case 0:
+		case 1: return y;   /* atan(+-0,+anything)=+-0 */
+		case 2: return  pi; /* atan(+0,-anything) = pi */
+		case 3: return -pi; /* atan(-0,-anything) =-pi */
+		}
+	}
+	/* when x = 0 */
+	if (ix == 0)
+		return m&1 ? -pi/2 : pi/2;
+	/* when x is INF */
+	if (ix == 0x7f800000) {
+		if (iy == 0x7f800000) {
+			switch (m) {
+			case 0: return  pi/4; /* atan(+INF,+INF) */
+			case 1: return -pi/4; /* atan(-INF,+INF) */
+			case 2: return 3*pi/4;  /*atan(+INF,-INF)*/
+			case 3: return -3*pi/4; /*atan(-INF,-INF)*/
+			}
+		} else {
+			switch (m) {
+			case 0: return  0.0f;    /* atan(+...,+INF) */
+			case 1: return -0.0f;    /* atan(-...,+INF) */
+			case 2: return  pi; /* atan(+...,-INF) */
+			case 3: return -pi; /* atan(-...,-INF) */
+			}
+		}
+	}
+	/* |y/x| > 0x1p26 */
+	if (ix+(26<<23) < iy || iy == 0x7f800000)
+		return m&1 ? -pi/2 : pi/2;
+
+	/* z = atan(|y/x|) with correct underflow */
+	if ((m&2) && iy+(26<<23) < ix)  /*|y/x| < 0x1p-26, x < 0 */
+		z = 0.0;
+	else
+		z = atanf(fabsf(y/x));
+	switch (m) {
+	case 0: return z;              /* atan(+,+) */
+	case 1: return -z;             /* atan(-,+) */
+	case 2: return pi - (z-pi_lo); /* atan(+,-) */
+	default: /* case 3 */
+		return (z-pi_lo) - pi; /* atan(-,-) */
+	}
+}

src/libc-shim/src/atanf.c

@@ -0,0 +1,94 @@
+/* origin: FreeBSD /usr/src/lib/msun/src/s_atanf.c */
+/*
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+
+#include "libm.h"
+
+static const float atanhi[] = {
+  4.6364760399e-01, /* atan(0.5)hi 0x3eed6338 */
+  7.8539812565e-01, /* atan(1.0)hi 0x3f490fda */
+  9.8279368877e-01, /* atan(1.5)hi 0x3f7b985e */
+  1.5707962513e+00, /* atan(inf)hi 0x3fc90fda */
+};
+
+static const float atanlo[] = {
+  5.0121582440e-09, /* atan(0.5)lo 0x31ac3769 */
+  3.7748947079e-08, /* atan(1.0)lo 0x33222168 */
+  3.4473217170e-08, /* atan(1.5)lo 0x33140fb4 */
+  7.5497894159e-08, /* atan(inf)lo 0x33a22168 */
+};
+
+static const float aT[] = {
+  3.3333328366e-01,
+ -1.9999158382e-01,
+  1.4253635705e-01,
+ -1.0648017377e-01,
+  6.1687607318e-02,
+};
+
+float atanf(float x)
+{
+	float_t w,s1,s2,z;
+	uint32_t ix,sign;
+	int id;
+
+	GET_FLOAT_WORD(ix, x);
+	sign = ix>>31;
+	ix &= 0x7fffffff;
+	if (ix >= 0x4c800000) {  /* if |x| >= 2**26 */
+		if (isnan(x))
+			return x;
+		z = atanhi[3] + 0x1p-120f;
+		return sign ? -z : z;
+	}
+	if (ix < 0x3ee00000) {   /* |x| < 0.4375 */
+		if (ix < 0x39800000) {  /* |x| < 2**-12 */
+			if (ix < 0x00800000)
+				/* raise underflow for subnormal x */
+				FORCE_EVAL(x*x);
+			return x;
+		}
+		id = -1;
+	} else {
+		x = fabsf(x);
+		if (ix < 0x3f980000) {  /* |x| < 1.1875 */
+			if (ix < 0x3f300000) {  /*  7/16 <= |x| < 11/16 */
+				id = 0;
+				x = (2.0f*x - 1.0f)/(2.0f + x);
+			} else {                /* 11/16 <= |x| < 19/16 */
+				id = 1;
+				x = (x - 1.0f)/(x + 1.0f);
+			}
+		} else {
+			if (ix < 0x401c0000) {  /* |x| < 2.4375 */
+				id = 2;
+				x = (x - 1.5f)/(1.0f + 1.5f*x);
+			} else {                /* 2.4375 <= |x| < 2**26 */
+				id = 3;
+				x = -1.0f/x;
+			}
+		}
+	}
+	/* end of argument reduction */
+	z = x*x;
+	w = z*z;
+	/* break sum from i=0 to 10 aT[i]z**(i+1) into odd and even poly */
+	s1 = z*(aT[0]+w*(aT[2]+w*aT[4]));
+	s2 = w*(aT[1]+w*aT[3]);
+	if (id < 0)
+		return x - x*(s1+s2);
+	z = atanhi[id] - ((x*(s1+s2) - atanlo[id]) - x);
+	return sign ? -z : z;
+}

src/libc-shim/src/cbrt.c

@@ -0,0 +1,103 @@
+/* origin: FreeBSD /usr/src/lib/msun/src/s_cbrt.c */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ *
+ * Optimized by Bruce D. Evans.
+ */
+/* cbrt(x)
+ * Return cube root of x
+ */
+
+#include <math.h>
+#include <stdint.h>
+
+static const uint32_t
+B1 = 715094163, /* B1 = (1023-1023/3-0.03306235651)*2**20 */
+B2 = 696219795; /* B2 = (1023-1023/3-54/3-0.03306235651)*2**20 */
+
+/* |1/cbrt(x) - p(x)| < 2**-23.5 (~[-7.93e-8, 7.929e-8]). */
+static const double
+P0 =  1.87595182427177009643,  /* 0x3ffe03e6, 0x0f61e692 */
+P1 = -1.88497979543377169875,  /* 0xbffe28e0, 0x92f02420 */
+P2 =  1.621429720105354466140, /* 0x3ff9f160, 0x4a49d6c2 */
+P3 = -0.758397934778766047437, /* 0xbfe844cb, 0xbee751d9 */
+P4 =  0.145996192886612446982; /* 0x3fc2b000, 0xd4e4edd7 */
+
+double cbrt(double x)
+{
+	union {double f; uint64_t i;} u = {x};
+	double_t r,s,t,w;
+	uint32_t hx = u.i>>32 & 0x7fffffff;
+
+	if (hx >= 0x7ff00000)  /* cbrt(NaN,INF) is itself */
+		return x+x;
+
+	/*
+	 * Rough cbrt to 5 bits:
+	 *    cbrt(2**e*(1+m) ~= 2**(e/3)*(1+(e%3+m)/3)
+	 * where e is integral and >= 0, m is real and in [0, 1), and "/" and
+	 * "%" are integer division and modulus with rounding towards minus
+	 * infinity.  The RHS is always >= the LHS and has a maximum relative
+	 * error of about 1 in 16.  Adding a bias of -0.03306235651 to the
+	 * (e%3+m)/3 term reduces the error to about 1 in 32. With the IEEE
+	 * floating point representation, for finite positive normal values,
+	 * ordinary integer divison of the value in bits magically gives
+	 * almost exactly the RHS of the above provided we first subtract the
+	 * exponent bias (1023 for doubles) and later add it back.  We do the
+	 * subtraction virtually to keep e >= 0 so that ordinary integer
+	 * division rounds towards minus infinity; this is also efficient.
+	 */
+	if (hx < 0x00100000) { /* zero or subnormal? */
+		u.f = x*0x1p54;
+		hx = u.i>>32 & 0x7fffffff;
+		if (hx == 0)
+			return x;  /* cbrt(0) is itself */
+		hx = hx/3 + B2;
+	} else
+		hx = hx/3 + B1;
+	u.i &= 1ULL<<63;
+	u.i |= (uint64_t)hx << 32;
+	t = u.f;
+
+	/*
+	 * New cbrt to 23 bits:
+	 *    cbrt(x) = t*cbrt(x/t**3) ~= t*P(t**3/x)
+	 * where P(r) is a polynomial of degree 4 that approximates 1/cbrt(r)
+	 * to within 2**-23.5 when |r - 1| < 1/10.  The rough approximation
+	 * has produced t such than |t/cbrt(x) - 1| ~< 1/32, and cubing this
+	 * gives us bounds for r = t**3/x.
+	 *
+	 * Try to optimize for parallel evaluation as in __tanf.c.
+	 */
+	r = (t*t)*(t/x);
+	t = t*((P0+r*(P1+r*P2))+((r*r)*r)*(P3+r*P4));
+
+	/*
+	 * Round t away from zero to 23 bits (sloppily except for ensuring that
+	 * the result is larger in magnitude than cbrt(x) but not much more than
+	 * 2 23-bit ulps larger).  With rounding towards zero, the error bound
+	 * would be ~5/6 instead of ~4/6.  With a maximum error of 2 23-bit ulps
+	 * in the rounded t, the infinite-precision error in the Newton
+	 * approximation barely affects third digit in the final error
+	 * 0.667; the error in the rounded t can be up to about 3 23-bit ulps
+	 * before the final error is larger than 0.667 ulps.
+	 */
+	u.f = t;
+	u.i = (u.i + 0x80000000) & 0xffffffffc0000000ULL;
+	t = u.f;
+
+	/* one step Newton iteration to 53 bits with error < 0.667 ulps */
+	s = t*t;         /* t*t is exact */
+	r = x/s;         /* error <= 0.5 ulps; |r| < |t| */
+	w = t+t;         /* t+t is exact */
+	r = (r-t)/(w+r); /* r-t is exact; w+r ~= 3*t */
+	t = t+t*r;       /* error <= 0.5 + 0.5/3 + epsilon */
+	return t;
+}

src/libc-shim/src/cbrtf.c

@@ -0,0 +1,66 @@
+/* origin: FreeBSD /usr/src/lib/msun/src/s_cbrtf.c */
+/*
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ * Debugged and optimized by Bruce D. Evans.
+ */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+/* cbrtf(x)
+ * Return cube root of x
+ */
+
+#include <math.h>
+#include <stdint.h>
+
+static const unsigned
+B1 = 709958130, /* B1 = (127-127.0/3-0.03306235651)*2**23 */
+B2 = 642849266; /* B2 = (127-127.0/3-24/3-0.03306235651)*2**23 */
+
+float cbrtf(float x)
+{
+	double_t r,T;
+	union {float f; uint32_t i;} u = {x};
+	uint32_t hx = u.i & 0x7fffffff;
+
+	if (hx >= 0x7f800000)  /* cbrt(NaN,INF) is itself */
+		return x + x;
+
+	/* rough cbrt to 5 bits */
+	if (hx < 0x00800000) {  /* zero or subnormal? */
+		if (hx == 0)
+			return x;  /* cbrt(+-0) is itself */
+		u.f = x*0x1p24f;
+		hx = u.i & 0x7fffffff;
+		hx = hx/3 + B2;
+	} else
+		hx = hx/3 + B1;
+	u.i &= 0x80000000;
+	u.i |= hx;
+
+	/*
+	 * First step Newton iteration (solving t*t-x/t == 0) to 16 bits.  In
+	 * double precision so that its terms can be arranged for efficiency
+	 * without causing overflow or underflow.
+	 */
+	T = u.f;
+	r = T*T*T;
+	T = T*((double_t)x+x+r)/(x+r+r);
+
+	/*
+	 * Second step Newton iteration to 47 bits.  In double precision for
+	 * efficiency and accuracy.
+	 */
+	r = T*T*T;
+	T = T*((double_t)x+x+r)/(x+r+r);
+
+	/* rounding to 24 bits is perfect in round-to-nearest mode */
+	return T;
+}

src/libc-shim/src/exp.c

@@ -0,0 +1,136 @@
+/*
+ * Double-precision e^x function.
+ *
+ * Copyright (c) 2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <math.h>
+#include <stdint.h>
+#include "libm.h"
+#include "exp_data.h"
+
+#define N (1 << EXP_TABLE_BITS)
+#define InvLn2N __exp_data.invln2N
+#define NegLn2hiN __exp_data.negln2hiN
+#define NegLn2loN __exp_data.negln2loN
+#define Shift __exp_data.shift
+#define T __exp_data.tab
+#define C2 __exp_data.poly[5 - EXP_POLY_ORDER]
+#define C3 __exp_data.poly[6 - EXP_POLY_ORDER]
+#define C4 __exp_data.poly[7 - EXP_POLY_ORDER]
+#define C5 __exp_data.poly[8 - EXP_POLY_ORDER]
+
+/* Handle cases that may overflow or underflow when computing the result that
+   is scale*(1+TMP) without intermediate rounding.  The bit representation of
+   scale is in SBITS, however it has a computed exponent that may have
+   overflown into the sign bit so that needs to be adjusted before using it as
+   a double.  (int32_t)KI is the k used in the argument reduction and exponent
+   adjustment of scale, positive k here means the result may overflow and
+   negative k means the result may underflow.  */
+static inline double specialcase(double_t tmp, uint64_t sbits, uint64_t ki)
+{
+	double_t scale, y;
+
+	if ((ki & 0x80000000) == 0) {
+		/* k > 0, the exponent of scale might have overflowed by <= 460.  */
+		sbits -= 1009ull << 52;
+		scale = asdouble(sbits);
+		y = 0x1p1009 * (scale + scale * tmp);
+		return eval_as_double(y);
+	}
+	/* k < 0, need special care in the subnormal range.  */
+	sbits += 1022ull << 52;
+	scale = asdouble(sbits);
+	y = scale + scale * tmp;
+	if (y < 1.0) {
+		/* Round y to the right precision before scaling it into the subnormal
+		 range to avoid double rounding that can cause 0.5+E/2 ulp error where
+		 E is the worst-case ulp error outside the subnormal range.  So this
+		 is only useful if the goal is better than 1 ulp worst-case error.  */
+		double_t hi, lo;
+		lo = scale - y + scale * tmp;
+		hi = 1.0 + y;
+		lo = 1.0 - hi + y + lo;
+		y = eval_as_double(hi + lo) - 1.0;
+		/* Avoid -0.0 with downward rounding.  */
+		if (WANT_ROUNDING && y == 0.0)
+			y = 0.0;
+		/* The underflow exception needs to be signaled explicitly.  */
+		//WARN(orca): we don't have fp_barrier in wasm
+		//fp_force_eval(fp_barrier(0x1p-1022) * 0x1p-1022);
+		fp_force_eval((0x1p-1022) * 0x1p-1022);
+	}
+	y = 0x1p-1022 * y;
+	return eval_as_double(y);
+}
+
+/* Top 12 bits of a double (sign and exponent bits).  */
+static inline uint32_t top12(double x)
+{
+	return asuint64(x) >> 52;
+}
+
+double exp(double x)
+{
+	uint32_t abstop;
+	uint64_t ki, idx, top, sbits;
+	double_t kd, z, r, r2, scale, tail, tmp;
+
+	abstop = top12(x) & 0x7ff;
+	if (predict_false(abstop - top12(0x1p-54) >= top12(512.0) - top12(0x1p-54))) {
+		if (abstop - top12(0x1p-54) >= 0x80000000)
+			/* Avoid spurious underflow for tiny x.  */
+			/* Note: 0 is common input.  */
+			return WANT_ROUNDING ? 1.0 + x : 1.0;
+		if (abstop >= top12(1024.0)) {
+			if (asuint64(x) == asuint64(-INFINITY))
+				return 0.0;
+			if (abstop >= top12(INFINITY))
+				return 1.0 + x;
+			if (asuint64(x) >> 63)
+				return __math_uflow(0);
+			else
+				return __math_oflow(0);
+		}
+		/* Large x is special cased below.  */
+		abstop = 0;
+	}
+
+	/* exp(x) = 2^(k/N) * exp(r), with exp(r) in [2^(-1/2N),2^(1/2N)].  */
+	/* x = ln2/N*k + r, with int k and r in [-ln2/2N, ln2/2N].  */
+	z = InvLn2N * x;
+#if TOINT_INTRINSICS
+	kd = roundtoint(z);
+	ki = converttoint(z);
+#elif EXP_USE_TOINT_NARROW
+	/* z - kd is in [-0.5-2^-16, 0.5] in all rounding modes.  */
+	kd = eval_as_double(z + Shift);
+	ki = asuint64(kd) >> 16;
+	kd = (double_t)(int32_t)ki;
+#else
+	/* z - kd is in [-1, 1] in non-nearest rounding modes.  */
+	kd = eval_as_double(z + Shift);
+	ki = asuint64(kd);
+	kd -= Shift;
+#endif
+	r = x + kd * NegLn2hiN + kd * NegLn2loN;
+	/* 2^(k/N) ~= scale * (1 + tail).  */
+	idx = 2 * (ki % N);
+	top = ki << (52 - EXP_TABLE_BITS);
+	tail = asdouble(T[idx]);
+	/* This is only a valid scale when -1023*N < k < 1024*N.  */
+	sbits = T[idx + 1] + top;
+	/* exp(x) = 2^(k/N) * exp(r) ~= scale + scale * (tail + exp(r) - 1).  */
+	/* Evaluation is optimized assuming superscalar pipelined execution.  */
+	r2 = r * r;
+	/* Without fma the worst case error is 0.25/N ulp larger.  */
+	/* Worst case error is less than 0.5+1.11/N+(abs poly error * 2^53) ulp.  */
+	tmp = tail + r + r2 * (C2 + r * C3) + r2 * r2 * (C4 + r * C5);
+	if (predict_false(abstop == 0))
+		return specialcase(tmp, sbits, ki);
+	scale = asdouble(sbits);
+	/* Note: tmp == 0 or |tmp| > 2^-200 and scale > 2^-739, so there
+	   is no spurious underflow here even without fma.  */
+	return eval_as_double(scale + scale * tmp);
+}

src/libc-shim/src/exp2f_data.c

@@ -0,0 +1,35 @@
+/*
+ * Shared data between expf, exp2f and powf.
+ *
+ * Copyright (c) 2017-2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "exp2f_data.h"
+
+#define N (1 << EXP2F_TABLE_BITS)
+
+const struct exp2f_data __exp2f_data = {
+  /* tab[i] = uint(2^(i/N)) - (i << 52-BITS)
+     used for computing 2^(k/N) for an int |k| < 150 N as
+     double(tab[k%N] + (k << 52-BITS)) */
+  .tab = {
+0x3ff0000000000000, 0x3fefd9b0d3158574, 0x3fefb5586cf9890f, 0x3fef9301d0125b51,
+0x3fef72b83c7d517b, 0x3fef54873168b9aa, 0x3fef387a6e756238, 0x3fef1e9df51fdee1,
+0x3fef06fe0a31b715, 0x3feef1a7373aa9cb, 0x3feedea64c123422, 0x3feece086061892d,
+0x3feebfdad5362a27, 0x3feeb42b569d4f82, 0x3feeab07dd485429, 0x3feea47eb03a5585,
+0x3feea09e667f3bcd, 0x3fee9f75e8ec5f74, 0x3feea11473eb0187, 0x3feea589994cce13,
+0x3feeace5422aa0db, 0x3feeb737b0cdc5e5, 0x3feec49182a3f090, 0x3feed503b23e255d,
+0x3feee89f995ad3ad, 0x3feeff76f2fb5e47, 0x3fef199bdd85529c, 0x3fef3720dcef9069,
+0x3fef5818dcfba487, 0x3fef7c97337b9b5f, 0x3fefa4afa2a490da, 0x3fefd0765b6e4540,
+  },
+  .shift_scaled = 0x1.8p+52 / N,
+  .poly = {
+  0x1.c6af84b912394p-5, 0x1.ebfce50fac4f3p-3, 0x1.62e42ff0c52d6p-1,
+  },
+  .shift = 0x1.8p+52,
+  .invln2_scaled = 0x1.71547652b82fep+0 * N,
+  .poly_scaled = {
+  0x1.c6af84b912394p-5/N/N/N, 0x1.ebfce50fac4f3p-3/N/N, 0x1.62e42ff0c52d6p-1/N,
+  },
+};

src/libc-shim/src/exp2f_data.h

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2017-2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+#ifndef _EXP2F_DATA_H
+#define _EXP2F_DATA_H
+
+#include <features.h>
+#include <stdint.h>
+
+/* Shared between expf, exp2f and powf.  */
+#define EXP2F_TABLE_BITS 5
+#define EXP2F_POLY_ORDER 3
+extern const struct exp2f_data {
+	uint64_t tab[1 << EXP2F_TABLE_BITS];
+	double shift_scaled;
+	double poly[EXP2F_POLY_ORDER];
+	double shift;
+	double invln2_scaled;
+	double poly_scaled[EXP2F_POLY_ORDER];
+} __exp2f_data;
+
+#endif

src/libc-shim/src/exp_data.c

@@ -0,0 +1,182 @@
+/*
+ * Shared data between exp, exp2 and pow.
+ *
+ * Copyright (c) 2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "exp_data.h"
+
+#define N (1 << EXP_TABLE_BITS)
+
+const struct exp_data __exp_data = {
+// N/ln2
+.invln2N = 0x1.71547652b82fep0 * N,
+// -ln2/N
+.negln2hiN = -0x1.62e42fefa0000p-8,
+.negln2loN = -0x1.cf79abc9e3b3ap-47,
+// Used for rounding when !TOINT_INTRINSICS
+#if EXP_USE_TOINT_NARROW
+.shift = 0x1800000000.8p0,
+#else
+.shift = 0x1.8p52,
+#endif
+// exp polynomial coefficients.
+.poly = {
+// abs error: 1.555*2^-66
+// ulp error: 0.509 (0.511 without fma)
+// if |x| < ln2/256+eps
+// abs error if |x| < ln2/256+0x1p-15: 1.09*2^-65
+// abs error if |x| < ln2/128: 1.7145*2^-56
+0x1.ffffffffffdbdp-2,
+0x1.555555555543cp-3,
+0x1.55555cf172b91p-5,
+0x1.1111167a4d017p-7,
+},
+.exp2_shift = 0x1.8p52 / N,
+// exp2 polynomial coefficients.
+.exp2_poly = {
+// abs error: 1.2195*2^-65
+// ulp error: 0.507 (0.511 without fma)
+// if |x| < 1/256
+// abs error if |x| < 1/128: 1.9941*2^-56
+0x1.62e42fefa39efp-1,
+0x1.ebfbdff82c424p-3,
+0x1.c6b08d70cf4b5p-5,
+0x1.3b2abd24650ccp-7,
+0x1.5d7e09b4e3a84p-10,
+},
+// 2^(k/N) ~= H[k]*(1 + T[k]) for int k in [0,N)
+// tab[2*k] = asuint64(T[k])
+// tab[2*k+1] = asuint64(H[k]) - (k << 52)/N
+.tab = {
+0x0, 0x3ff0000000000000,
+0x3c9b3b4f1a88bf6e, 0x3feff63da9fb3335,
+0xbc7160139cd8dc5d, 0x3fefec9a3e778061,
+0xbc905e7a108766d1, 0x3fefe315e86e7f85,
+0x3c8cd2523567f613, 0x3fefd9b0d3158574,
+0xbc8bce8023f98efa, 0x3fefd06b29ddf6de,
+0x3c60f74e61e6c861, 0x3fefc74518759bc8,
+0x3c90a3e45b33d399, 0x3fefbe3ecac6f383,
+0x3c979aa65d837b6d, 0x3fefb5586cf9890f,
+0x3c8eb51a92fdeffc, 0x3fefac922b7247f7,
+0x3c3ebe3d702f9cd1, 0x3fefa3ec32d3d1a2,
+0xbc6a033489906e0b, 0x3fef9b66affed31b,
+0xbc9556522a2fbd0e, 0x3fef9301d0125b51,
+0xbc5080ef8c4eea55, 0x3fef8abdc06c31cc,
+0xbc91c923b9d5f416, 0x3fef829aaea92de0,
+0x3c80d3e3e95c55af, 0x3fef7a98c8a58e51,
+0xbc801b15eaa59348, 0x3fef72b83c7d517b,
+0xbc8f1ff055de323d, 0x3fef6af9388c8dea,
+0x3c8b898c3f1353bf, 0x3fef635beb6fcb75,
+0xbc96d99c7611eb26, 0x3fef5be084045cd4,
+0x3c9aecf73e3a2f60, 0x3fef54873168b9aa,
+0xbc8fe782cb86389d, 0x3fef4d5022fcd91d,
+0x3c8a6f4144a6c38d, 0x3fef463b88628cd6,
+0x3c807a05b0e4047d, 0x3fef3f49917ddc96,
+0x3c968efde3a8a894, 0x3fef387a6e756238,
+0x3c875e18f274487d, 0x3fef31ce4fb2a63f,
+0x3c80472b981fe7f2, 0x3fef2b4565e27cdd,
+0xbc96b87b3f71085e, 0x3fef24dfe1f56381,
+0x3c82f7e16d09ab31, 0x3fef1e9df51fdee1,
+0xbc3d219b1a6fbffa, 0x3fef187fd0dad990,
+0x3c8b3782720c0ab4, 0x3fef1285a6e4030b,
+0x3c6e149289cecb8f, 0x3fef0cafa93e2f56,
+0x3c834d754db0abb6, 0x3fef06fe0a31b715,
+0x3c864201e2ac744c, 0x3fef0170fc4cd831,
+0x3c8fdd395dd3f84a, 0x3feefc08b26416ff,
+0xbc86a3803b8e5b04, 0x3feef6c55f929ff1,
+0xbc924aedcc4b5068, 0x3feef1a7373aa9cb,
+0xbc9907f81b512d8e, 0x3feeecae6d05d866,
+0xbc71d1e83e9436d2, 0x3feee7db34e59ff7,
+0xbc991919b3ce1b15, 0x3feee32dc313a8e5,
+0x3c859f48a72a4c6d, 0x3feedea64c123422,
+0xbc9312607a28698a, 0x3feeda4504ac801c,
+0xbc58a78f4817895b, 0x3feed60a21f72e2a,
+0xbc7c2c9b67499a1b, 0x3feed1f5d950a897,
+0x3c4363ed60c2ac11, 0x3feece086061892d,
+0x3c9666093b0664ef, 0x3feeca41ed1d0057,
+0x3c6ecce1daa10379, 0x3feec6a2b5c13cd0,
+0x3c93ff8e3f0f1230, 0x3feec32af0d7d3de,
+0x3c7690cebb7aafb0, 0x3feebfdad5362a27,
+0x3c931dbdeb54e077, 0x3feebcb299fddd0d,
+0xbc8f94340071a38e, 0x3feeb9b2769d2ca7,
+0xbc87deccdc93a349, 0x3feeb6daa2cf6642,
+0xbc78dec6bd0f385f, 0x3feeb42b569d4f82,
+0xbc861246ec7b5cf6, 0x3feeb1a4ca5d920f,
+0x3c93350518fdd78e, 0x3feeaf4736b527da,
+0x3c7b98b72f8a9b05, 0x3feead12d497c7fd,
+0x3c9063e1e21c5409, 0x3feeab07dd485429,
+0x3c34c7855019c6ea, 0x3feea9268a5946b7,
+0x3c9432e62b64c035, 0x3feea76f15ad2148,
+0xbc8ce44a6199769f, 0x3feea5e1b976dc09,
+0xbc8c33c53bef4da8, 0x3feea47eb03a5585,
+0xbc845378892be9ae, 0x3feea34634ccc320,
+0xbc93cedd78565858, 0x3feea23882552225,
+0x3c5710aa807e1964, 0x3feea155d44ca973,
+0xbc93b3efbf5e2228, 0x3feea09e667f3bcd,
+0xbc6a12ad8734b982, 0x3feea012750bdabf,
+0xbc6367efb86da9ee, 0x3fee9fb23c651a2f,
+0xbc80dc3d54e08851, 0x3fee9f7df9519484,
+0xbc781f647e5a3ecf, 0x3fee9f75e8ec5f74,
+0xbc86ee4ac08b7db0, 0x3fee9f9a48a58174,
+0xbc8619321e55e68a, 0x3fee9feb564267c9,
+0x3c909ccb5e09d4d3, 0x3feea0694fde5d3f,
+0xbc7b32dcb94da51d, 0x3feea11473eb0187,
+0x3c94ecfd5467c06b, 0x3feea1ed0130c132,
+0x3c65ebe1abd66c55, 0x3feea2f336cf4e62,
+0xbc88a1c52fb3cf42, 0x3feea427543e1a12,
+0xbc9369b6f13b3734, 0x3feea589994cce13,
+0xbc805e843a19ff1e, 0x3feea71a4623c7ad,
+0xbc94d450d872576e, 0x3feea8d99b4492ed,
+0x3c90ad675b0e8a00, 0x3feeaac7d98a6699,
+0x3c8db72fc1f0eab4, 0x3feeace5422aa0db,
+0xbc65b6609cc5e7ff, 0x3feeaf3216b5448c,
+0x3c7bf68359f35f44, 0x3feeb1ae99157736,
+0xbc93091fa71e3d83, 0x3feeb45b0b91ffc6,
+0xbc5da9b88b6c1e29, 0x3feeb737b0cdc5e5,
+0xbc6c23f97c90b959, 0x3feeba44cbc8520f,
+0xbc92434322f4f9aa, 0x3feebd829fde4e50,
+0xbc85ca6cd7668e4b, 0x3feec0f170ca07ba,
+0x3c71affc2b91ce27, 0x3feec49182a3f090,
+0x3c6dd235e10a73bb, 0x3feec86319e32323,
+0xbc87c50422622263, 0x3feecc667b5de565,
+0x3c8b1c86e3e231d5, 0x3feed09bec4a2d33,
+0xbc91bbd1d3bcbb15, 0x3feed503b23e255d,
+0x3c90cc319cee31d2, 0x3feed99e1330b358,
+0x3c8469846e735ab3, 0x3feede6b5579fdbf,
+0xbc82dfcd978e9db4, 0x3feee36bbfd3f37a,
+0x3c8c1a7792cb3387, 0x3feee89f995ad3ad,
+0xbc907b8f4ad1d9fa, 0x3feeee07298db666,
+0xbc55c3d956dcaeba, 0x3feef3a2b84f15fb,
+0xbc90a40e3da6f640, 0x3feef9728de5593a,
+0xbc68d6f438ad9334, 0x3feeff76f2fb5e47,
+0xbc91eee26b588a35, 0x3fef05b030a1064a,
+0x3c74ffd70a5fddcd, 0x3fef0c1e904bc1d2,
+0xbc91bdfbfa9298ac, 0x3fef12c25bd71e09,
+0x3c736eae30af0cb3, 0x3fef199bdd85529c,
+0x3c8ee3325c9ffd94, 0x3fef20ab5fffd07a,
+0x3c84e08fd10959ac, 0x3fef27f12e57d14b,
+0x3c63cdaf384e1a67, 0x3fef2f6d9406e7b5,
+0x3c676b2c6c921968, 0x3fef3720dcef9069,
+0xbc808a1883ccb5d2, 0x3fef3f0b555dc3fa,
+0xbc8fad5d3ffffa6f, 0x3fef472d4a07897c,
+0xbc900dae3875a949, 0x3fef4f87080d89f2,
+0x3c74a385a63d07a7, 0x3fef5818dcfba487,
+0xbc82919e2040220f, 0x3fef60e316c98398,
+0x3c8e5a50d5c192ac, 0x3fef69e603db3285,
+0x3c843a59ac016b4b, 0x3fef7321f301b460,
+0xbc82d52107b43e1f, 0x3fef7c97337b9b5f,
+0xbc892ab93b470dc9, 0x3fef864614f5a129,
+0x3c74b604603a88d3, 0x3fef902ee78b3ff6,
+0x3c83c5ec519d7271, 0x3fef9a51fbc74c83,
+0xbc8ff7128fd391f0, 0x3fefa4afa2a490da,
+0xbc8dae98e223747d, 0x3fefaf482d8e67f1,
+0x3c8ec3bc41aa2008, 0x3fefba1bee615a27,
+0x3c842b94c3a9eb32, 0x3fefc52b376bba97,
+0x3c8a64a931d185ee, 0x3fefd0765b6e4540,
+0xbc8e37bae43be3ed, 0x3fefdbfdad9cbe14,
+0x3c77893b4d91cd9d, 0x3fefe7c1819e90d8,
+0x3c5305c14160cc89, 0x3feff3c22b8f71f1,
+},
+};

src/libc-shim/src/expf.c

@@ -0,0 +1,80 @@
+/*
+ * Single-precision e^x function.
+ *
+ * Copyright (c) 2017-2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <math.h>
+#include <stdint.h>
+#include "libm.h"
+#include "exp2f_data.h"
+
+/*
+EXP2F_TABLE_BITS = 5
+EXP2F_POLY_ORDER = 3
+
+ULP error: 0.502 (nearest rounding.)
+Relative error: 1.69 * 2^-34 in [-ln2/64, ln2/64] (before rounding.)
+Wrong count: 170635 (all nearest rounding wrong results with fma.)
+Non-nearest ULP error: 1 (rounded ULP error)
+*/
+
+#define N (1 << EXP2F_TABLE_BITS)
+#define InvLn2N __exp2f_data.invln2_scaled
+#define T __exp2f_data.tab
+#define C __exp2f_data.poly_scaled
+
+static inline uint32_t top12(float x)
+{
+	return asuint(x) >> 20;
+}
+
+float expf(float x)
+{
+	uint32_t abstop;
+	uint64_t ki, t;
+	double_t kd, xd, z, r, r2, y, s;
+
+	xd = (double_t)x;
+	abstop = top12(x) & 0x7ff;
+	if (predict_false(abstop >= top12(88.0f))) {
+		/* |x| >= 88 or x is nan.  */
+		if (asuint(x) == asuint(-INFINITY))
+			return 0.0f;
+		if (abstop >= top12(INFINITY))
+			return x + x;
+		if (x > 0x1.62e42ep6f) /* x > log(0x1p128) ~= 88.72 */
+			return __math_oflowf(0);
+		if (x < -0x1.9fe368p6f) /* x < log(0x1p-150) ~= -103.97 */
+			return __math_uflowf(0);
+	}
+
+	/* x*N/Ln2 = k + r with r in [-1/2, 1/2] and int k.  */
+	z = InvLn2N * xd;
+
+	/* Round and convert z to int, the result is in [-150*N, 128*N] and
+	   ideally ties-to-even rule is used, otherwise the magnitude of r
+	   can be bigger which gives larger approximation error.  */
+#if TOINT_INTRINSICS
+	kd = roundtoint(z);
+	ki = converttoint(z);
+#else
+# define SHIFT __exp2f_data.shift
+	kd = eval_as_double(z + SHIFT);
+	ki = asuint64(kd);
+	kd -= SHIFT;
+#endif
+	r = z - kd;
+
+	/* exp(x) = 2^(k/N) * 2^(r/N) ~= s * (C0*r^3 + C1*r^2 + C2*r + 1) */
+	t = T[ki % N];
+	t += ki << (52 - EXP2F_TABLE_BITS);
+	s = asdouble(t);
+	z = C[0] * r + C[1];
+	r2 = r * r;
+	y = C[2] * r + 1;
+	y = z * r2 + y;
+	y = y * s;
+	return eval_as_float(y);
+}

src/libc-shim/src/libm.h

@@ -1,3 +1,6 @@
+#ifndef _LIBM_H
+#define _LIBM_H
+
 #include <float.h>
 #include <math.h>
 #include <stdint.h>
@@ -144,8 +147,13 @@ int __rem_pio2f(float, double*);
 float __sindf(double);
 float __cosdf(double);
 
+float __math_xflowf(uint32_t, float);
+float __math_uflowf(uint32_t);
+float __math_oflowf(uint32_t);
 float __math_invalidf(float);
 double __math_xflow(uint32_t, double);
 double __math_uflow(uint32_t);
 double __math_oflow(uint32_t);
 double __math_invalid(double);
+
+#endif // _LIBM_H

src/libc-shim/src/log.c

@@ -0,0 +1,112 @@
+/*
+ * Double-precision log(x) function.
+ *
+ * Copyright (c) 2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <math.h>
+#include <stdint.h>
+#include "libm.h"
+#include "log_data.h"
+
+#define T __log_data.tab
+#define T2 __log_data.tab2
+#define B __log_data.poly1
+#define A __log_data.poly
+#define Ln2hi __log_data.ln2hi
+#define Ln2lo __log_data.ln2lo
+#define N (1 << LOG_TABLE_BITS)
+#define OFF 0x3fe6000000000000
+
+/* Top 16 bits of a double.  */
+static inline uint32_t top16(double x)
+{
+	return asuint64(x) >> 48;
+}
+
+double log(double x)
+{
+	double_t w, z, r, r2, r3, y, invc, logc, kd, hi, lo;
+	uint64_t ix, iz, tmp;
+	uint32_t top;
+	int k, i;
+
+	ix = asuint64(x);
+	top = top16(x);
+#define LO asuint64(1.0 - 0x1p-4)
+#define HI asuint64(1.0 + 0x1.09p-4)
+	if (predict_false(ix - LO < HI - LO)) {
+		/* Handle close to 1.0 inputs separately.  */
+		/* Fix sign of zero with downward rounding when x==1.  */
+		if (WANT_ROUNDING && predict_false(ix == asuint64(1.0)))
+			return 0;
+		r = x - 1.0;
+		r2 = r * r;
+		r3 = r * r2;
+		y = r3 *
+		    (B[1] + r * B[2] + r2 * B[3] +
+		     r3 * (B[4] + r * B[5] + r2 * B[6] +
+			   r3 * (B[7] + r * B[8] + r2 * B[9] + r3 * B[10])));
+		/* Worst-case error is around 0.507 ULP.  */
+		w = r * 0x1p27;
+		double_t rhi = r + w - w;
+		double_t rlo = r - rhi;
+		w = rhi * rhi * B[0]; /* B[0] == -0.5.  */
+		hi = r + w;
+		lo = r - hi + w;
+		lo += B[0] * rlo * (rhi + r);
+		y += lo;
+		y += hi;
+		return eval_as_double(y);
+	}
+	if (predict_false(top - 0x0010 >= 0x7ff0 - 0x0010)) {
+		/* x < 0x1p-1022 or inf or nan.  */
+		if (ix * 2 == 0)
+			return __math_divzero(1);
+		if (ix == asuint64(INFINITY)) /* log(inf) == inf.  */
+			return x;
+		if ((top & 0x8000) || (top & 0x7ff0) == 0x7ff0)
+			return __math_invalid(x);
+		/* x is subnormal, normalize it.  */
+		ix = asuint64(x * 0x1p52);
+		ix -= 52ULL << 52;
+	}
+
+	/* x = 2^k z; where z is in range [OFF,2*OFF) and exact.
+	   The range is split into N subintervals.
+	   The ith subinterval contains z and c is near its center.  */
+	tmp = ix - OFF;
+	i = (tmp >> (52 - LOG_TABLE_BITS)) % N;
+	k = (int64_t)tmp >> 52; /* arithmetic shift */
+	iz = ix - (tmp & 0xfffULL << 52);
+	invc = T[i].invc;
+	logc = T[i].logc;
+	z = asdouble(iz);
+
+	/* log(x) = log1p(z/c-1) + log(c) + k*Ln2.  */
+	/* r ~= z/c - 1, |r| < 1/(2*N).  */
+#if __FP_FAST_FMA
+	/* rounding error: 0x1p-55/N.  */
+	r = __builtin_fma(z, invc, -1.0);
+#else
+	/* rounding error: 0x1p-55/N + 0x1p-66.  */
+	r = (z - T2[i].chi - T2[i].clo) * invc;
+#endif
+	kd = (double_t)k;
+
+	/* hi + lo = r + log(c) + k*Ln2.  */
+	w = kd * Ln2hi + logc;
+	hi = w + r;
+	lo = w - hi + r + kd * Ln2lo;
+
+	/* log(x) = lo + (log1p(r) - r) + hi.  */
+	r2 = r * r; /* rounding error: 0x1p-54/N^2.  */
+	/* Worst case error if |y| > 0x1p-5:
+	   0.5 + 4.13/N + abs-poly-error*2^57 ULP (+ 0.002 ULP without fma)
+	   Worst case error if |y| > 0x1p-4:
+	   0.5 + 2.06/N + abs-poly-error*2^56 ULP (+ 0.001 ULP without fma).  */
+	y = lo + r2 * A[0] +
+	    r * r2 * (A[1] + r * A[2] + r2 * (A[3] + r * A[4])) + hi;
+	return eval_as_double(y);
+}

src/libc-shim/src/log2.c

@@ -0,0 +1,122 @@
+/*
+ * Double-precision log2(x) function.
+ *
+ * Copyright (c) 2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <math.h>
+#include <stdint.h>
+#include "libm.h"
+#include "log2_data.h"
+
+#define T __log2_data.tab
+#define T2 __log2_data.tab2
+#define B __log2_data.poly1
+#define A __log2_data.poly
+#define InvLn2hi __log2_data.invln2hi
+#define InvLn2lo __log2_data.invln2lo
+#define N (1 << LOG2_TABLE_BITS)
+#define OFF 0x3fe6000000000000
+
+/* Top 16 bits of a double.  */
+static inline uint32_t top16(double x)
+{
+	return asuint64(x) >> 48;
+}
+
+double log2(double x)
+{
+	double_t z, r, r2, r4, y, invc, logc, kd, hi, lo, t1, t2, t3, p;
+	uint64_t ix, iz, tmp;
+	uint32_t top;
+	int k, i;
+
+	ix = asuint64(x);
+	top = top16(x);
+#define LO asuint64(1.0 - 0x1.5b51p-5)
+#define HI asuint64(1.0 + 0x1.6ab2p-5)
+	if (predict_false(ix - LO < HI - LO)) {
+		/* Handle close to 1.0 inputs separately.  */
+		/* Fix sign of zero with downward rounding when x==1.  */
+		if (WANT_ROUNDING && predict_false(ix == asuint64(1.0)))
+			return 0;
+		r = x - 1.0;
+#if __FP_FAST_FMA
+		hi = r * InvLn2hi;
+		lo = r * InvLn2lo + __builtin_fma(r, InvLn2hi, -hi);
+#else
+		double_t rhi, rlo;
+		rhi = asdouble(asuint64(r) & -1ULL << 32);
+		rlo = r - rhi;
+		hi = rhi * InvLn2hi;
+		lo = rlo * InvLn2hi + r * InvLn2lo;
+#endif
+		r2 = r * r; /* rounding error: 0x1p-62.  */
+		r4 = r2 * r2;
+		/* Worst-case error is less than 0.54 ULP (0.55 ULP without fma).  */
+		p = r2 * (B[0] + r * B[1]);
+		y = hi + p;
+		lo += hi - y + p;
+		lo += r4 * (B[2] + r * B[3] + r2 * (B[4] + r * B[5]) +
+			    r4 * (B[6] + r * B[7] + r2 * (B[8] + r * B[9])));
+		y += lo;
+		return eval_as_double(y);
+	}
+	if (predict_false(top - 0x0010 >= 0x7ff0 - 0x0010)) {
+		/* x < 0x1p-1022 or inf or nan.  */
+		if (ix * 2 == 0)
+			return __math_divzero(1);
+		if (ix == asuint64(INFINITY)) /* log(inf) == inf.  */
+			return x;
+		if ((top & 0x8000) || (top & 0x7ff0) == 0x7ff0)
+			return __math_invalid(x);
+		/* x is subnormal, normalize it.  */
+		ix = asuint64(x * 0x1p52);
+		ix -= 52ULL << 52;
+	}
+
+	/* x = 2^k z; where z is in range [OFF,2*OFF) and exact.
+	   The range is split into N subintervals.
+	   The ith subinterval contains z and c is near its center.  */
+	tmp = ix - OFF;
+	i = (tmp >> (52 - LOG2_TABLE_BITS)) % N;
+	k = (int64_t)tmp >> 52; /* arithmetic shift */
+	iz = ix - (tmp & 0xfffULL << 52);
+	invc = T[i].invc;
+	logc = T[i].logc;
+	z = asdouble(iz);
+	kd = (double_t)k;
+
+	/* log2(x) = log2(z/c) + log2(c) + k.  */
+	/* r ~= z/c - 1, |r| < 1/(2*N).  */
+#if __FP_FAST_FMA
+	/* rounding error: 0x1p-55/N.  */
+	r = __builtin_fma(z, invc, -1.0);
+	t1 = r * InvLn2hi;
+	t2 = r * InvLn2lo + __builtin_fma(r, InvLn2hi, -t1);
+#else
+	double_t rhi, rlo;
+	/* rounding error: 0x1p-55/N + 0x1p-65.  */
+	r = (z - T2[i].chi - T2[i].clo) * invc;
+	rhi = asdouble(asuint64(r) & -1ULL << 32);
+	rlo = r - rhi;
+	t1 = rhi * InvLn2hi;
+	t2 = rlo * InvLn2hi + r * InvLn2lo;
+#endif
+
+	/* hi + lo = r/ln2 + log2(c) + k.  */
+	t3 = kd + logc;
+	hi = t3 + t1;
+	lo = t3 - hi + t1 + t2;
+
+	/* log2(r+1) = r/ln2 + r^2*poly(r).  */
+	/* Evaluation is optimized assuming superscalar pipelined execution.  */
+	r2 = r * r; /* rounding error: 0x1p-54/N^2.  */
+	r4 = r2 * r2;
+	/* Worst-case error if |y| > 0x1p-4: 0.547 ULP (0.550 ULP without fma).
+	   ~ 0.5 + 2/N/ln2 + abs-poly-error*0x1p56 ULP (+ 0.003 ULP without fma).  */
+	p = A[0] + r * A[1] + r2 * (A[2] + r * A[3]) + r4 * (A[4] + r * A[5]);
+	y = lo + r2 * p + hi;
+	return eval_as_double(y);
+}

src/libc-shim/src/log2_data.c

@@ -0,0 +1,201 @@
+/*
+ * Data for log2.
+ *
+ * Copyright (c) 2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "log2_data.h"
+
+#define N (1 << LOG2_TABLE_BITS)
+
+const struct log2_data __log2_data = {
+// First coefficient: 0x1.71547652b82fe1777d0ffda0d24p0
+.invln2hi = 0x1.7154765200000p+0,
+.invln2lo = 0x1.705fc2eefa200p-33,
+.poly1 = {
+// relative error: 0x1.2fad8188p-63
+// in -0x1.5b51p-5 0x1.6ab2p-5
+-0x1.71547652b82fep-1,
+0x1.ec709dc3a03f7p-2,
+-0x1.71547652b7c3fp-2,
+0x1.2776c50f05be4p-2,
+-0x1.ec709dd768fe5p-3,
+0x1.a61761ec4e736p-3,
+-0x1.7153fbc64a79bp-3,
+0x1.484d154f01b4ap-3,
+-0x1.289e4a72c383cp-3,
+0x1.0b32f285aee66p-3,
+},
+.poly = {
+// relative error: 0x1.a72c2bf8p-58
+// abs error: 0x1.67a552c8p-66
+// in -0x1.f45p-8 0x1.f45p-8
+-0x1.71547652b8339p-1,
+0x1.ec709dc3a04bep-2,
+-0x1.7154764702ffbp-2,
+0x1.2776c50034c48p-2,
+-0x1.ec7b328ea92bcp-3,
+0x1.a6225e117f92ep-3,
+},
+/* Algorithm:
+
+	x = 2^k z
+	log2(x) = k + log2(c) + log2(z/c)
+	log2(z/c) = poly(z/c - 1)
+
+where z is in [1.6p-1; 1.6p0] which is split into N subintervals and z falls
+into the ith one, then table entries are computed as
+
+	tab[i].invc = 1/c
+	tab[i].logc = (double)log2(c)
+	tab2[i].chi = (double)c
+	tab2[i].clo = (double)(c - (double)c)
+
+where c is near the center of the subinterval and is chosen by trying +-2^29
+floating point invc candidates around 1/center and selecting one for which
+
+	1) the rounding error in 0x1.8p10 + logc is 0,
+	2) the rounding error in z - chi - clo is < 0x1p-64 and
+	3) the rounding error in (double)log2(c) is minimized (< 0x1p-68).
+
+Note: 1) ensures that k + logc can be computed without rounding error, 2)
+ensures that z/c - 1 can be computed as (z - chi - clo)*invc with close to a
+single rounding error when there is no fast fma for z*invc - 1, 3) ensures
+that logc + poly(z/c - 1) has small error, however near x == 1 when
+|log2(x)| < 0x1p-4, this is not enough so that is special cased.  */
+.tab = {
+{0x1.724286bb1acf8p+0, -0x1.1095feecdb000p-1},
+{0x1.6e1f766d2cca1p+0, -0x1.08494bd76d000p-1},
+{0x1.6a13d0e30d48ap+0, -0x1.00143aee8f800p-1},
+{0x1.661ec32d06c85p+0, -0x1.efec5360b4000p-2},
+{0x1.623fa951198f8p+0, -0x1.dfdd91ab7e000p-2},
+{0x1.5e75ba4cf026cp+0, -0x1.cffae0cc79000p-2},
+{0x1.5ac055a214fb8p+0, -0x1.c043811fda000p-2},
+{0x1.571ed0f166e1ep+0, -0x1.b0b67323ae000p-2},
+{0x1.53909590bf835p+0, -0x1.a152f5a2db000p-2},
+{0x1.5014fed61adddp+0, -0x1.9217f5af86000p-2},
+{0x1.4cab88e487bd0p+0, -0x1.8304db0719000p-2},
+{0x1.49539b4334feep+0, -0x1.74189f9a9e000p-2},
+{0x1.460cbdfafd569p+0, -0x1.6552bb5199000p-2},
+{0x1.42d664ee4b953p+0, -0x1.56b23a29b1000p-2},
+{0x1.3fb01111dd8a6p+0, -0x1.483650f5fa000p-2},
+{0x1.3c995b70c5836p+0, -0x1.39de937f6a000p-2},
+{0x1.3991c4ab6fd4ap+0, -0x1.2baa1538d6000p-2},
+{0x1.3698e0ce099b5p+0, -0x1.1d98340ca4000p-2},
+{0x1.33ae48213e7b2p+0, -0x1.0fa853a40e000p-2},
+{0x1.30d191985bdb1p+0, -0x1.01d9c32e73000p-2},
+{0x1.2e025cab271d7p+0, -0x1.e857da2fa6000p-3},
+{0x1.2b404cf13cd82p+0, -0x1.cd3c8633d8000p-3},
+{0x1.288b02c7ccb50p+0, -0x1.b26034c14a000p-3},
+{0x1.25e2263944de5p+0, -0x1.97c1c2f4fe000p-3},
+{0x1.234563d8615b1p+0, -0x1.7d6023f800000p-3},
+{0x1.20b46e33eaf38p+0, -0x1.633a71a05e000p-3},
+{0x1.1e2eefdcda3ddp+0, -0x1.494f5e9570000p-3},
+{0x1.1bb4a580b3930p+0, -0x1.2f9e424e0a000p-3},
+{0x1.19453847f2200p+0, -0x1.162595afdc000p-3},
+{0x1.16e06c0d5d73cp+0, -0x1.f9c9a75bd8000p-4},
+{0x1.1485f47b7e4c2p+0, -0x1.c7b575bf9c000p-4},
+{0x1.12358ad0085d1p+0, -0x1.960c60ff48000p-4},
+{0x1.0fef00f532227p+0, -0x1.64ce247b60000p-4},
+{0x1.0db2077d03a8fp+0, -0x1.33f78b2014000p-4},
+{0x1.0b7e6d65980d9p+0, -0x1.0387d1a42c000p-4},
+{0x1.0953efe7b408dp+0, -0x1.a6f9208b50000p-5},
+{0x1.07325cac53b83p+0, -0x1.47a954f770000p-5},
+{0x1.05197e40d1b5cp+0, -0x1.d23a8c50c0000p-6},
+{0x1.03091c1208ea2p+0, -0x1.16a2629780000p-6},
+{0x1.0101025b37e21p+0, -0x1.720f8d8e80000p-8},
+{0x1.fc07ef9caa76bp-1, 0x1.6fe53b1500000p-7},
+{0x1.f4465d3f6f184p-1, 0x1.11ccce10f8000p-5},
+{0x1.ecc079f84107fp-1, 0x1.c4dfc8c8b8000p-5},
+{0x1.e573a99975ae8p-1, 0x1.3aa321e574000p-4},
+{0x1.de5d6f0bd3de6p-1, 0x1.918a0d08b8000p-4},
+{0x1.d77b681ff38b3p-1, 0x1.e72e9da044000p-4},
+{0x1.d0cb5724de943p-1, 0x1.1dcd2507f6000p-3},
+{0x1.ca4b2dc0e7563p-1, 0x1.476ab03dea000p-3},
+{0x1.c3f8ee8d6cb51p-1, 0x1.7074377e22000p-3},
+{0x1.bdd2b4f020c4cp-1, 0x1.98ede8ba94000p-3},
+{0x1.b7d6c006015cap-1, 0x1.c0db86ad2e000p-3},
+{0x1.b20366e2e338fp-1, 0x1.e840aafcee000p-3},
+{0x1.ac57026295039p-1, 0x1.0790ab4678000p-2},
+{0x1.a6d01bc2731ddp-1, 0x1.1ac056801c000p-2},
+{0x1.a16d3bc3ff18bp-1, 0x1.2db11d4fee000p-2},
+{0x1.9c2d14967feadp-1, 0x1.406464ec58000p-2},
+{0x1.970e4f47c9902p-1, 0x1.52dbe093af000p-2},
+{0x1.920fb3982bcf2p-1, 0x1.651902050d000p-2},
+{0x1.8d30187f759f1p-1, 0x1.771d2cdeaf000p-2},
+{0x1.886e5ebb9f66dp-1, 0x1.88e9c857d9000p-2},
+{0x1.83c97b658b994p-1, 0x1.9a80155e16000p-2},
+{0x1.7f405ffc61022p-1, 0x1.abe186ed3d000p-2},
+{0x1.7ad22181415cap-1, 0x1.bd0f2aea0e000p-2},
+{0x1.767dcf99eff8cp-1, 0x1.ce0a43dbf4000p-2},
+},
+#if !__FP_FAST_FMA
+.tab2 = {
+{0x1.6200012b90a8ep-1, 0x1.904ab0644b605p-55},
+{0x1.66000045734a6p-1, 0x1.1ff9bea62f7a9p-57},
+{0x1.69fffc325f2c5p-1, 0x1.27ecfcb3c90bap-55},
+{0x1.6e00038b95a04p-1, 0x1.8ff8856739326p-55},
+{0x1.71fffe09994e3p-1, 0x1.afd40275f82b1p-55},
+{0x1.7600015590e1p-1, -0x1.2fd75b4238341p-56},
+{0x1.7a00012655bd5p-1, 0x1.808e67c242b76p-56},
+{0x1.7e0003259e9a6p-1, -0x1.208e426f622b7p-57},
+{0x1.81fffedb4b2d2p-1, -0x1.402461ea5c92fp-55},
+{0x1.860002dfafcc3p-1, 0x1.df7f4a2f29a1fp-57},
+{0x1.89ffff78c6b5p-1, -0x1.e0453094995fdp-55},
+{0x1.8e00039671566p-1, -0x1.a04f3bec77b45p-55},
+{0x1.91fffe2bf1745p-1, -0x1.7fa34400e203cp-56},
+{0x1.95fffcc5c9fd1p-1, -0x1.6ff8005a0695dp-56},
+{0x1.9a0003bba4767p-1, 0x1.0f8c4c4ec7e03p-56},
+{0x1.9dfffe7b92da5p-1, 0x1.e7fd9478c4602p-55},
+{0x1.a1fffd72efdafp-1, -0x1.a0c554dcdae7ep-57},
+{0x1.a5fffde04ff95p-1, 0x1.67da98ce9b26bp-55},
+{0x1.a9fffca5e8d2bp-1, -0x1.284c9b54c13dep-55},
+{0x1.adfffddad03eap-1, 0x1.812c8ea602e3cp-58},
+{0x1.b1ffff10d3d4dp-1, -0x1.efaddad27789cp-55},
+{0x1.b5fffce21165ap-1, 0x1.3cb1719c61237p-58},
+{0x1.b9fffd950e674p-1, 0x1.3f7d94194cep-56},
+{0x1.be000139ca8afp-1, 0x1.50ac4215d9bcp-56},
+{0x1.c20005b46df99p-1, 0x1.beea653e9c1c9p-57},
+{0x1.c600040b9f7aep-1, -0x1.c079f274a70d6p-56},
+{0x1.ca0006255fd8ap-1, -0x1.a0b4076e84c1fp-56},
+{0x1.cdfffd94c095dp-1, 0x1.8f933f99ab5d7p-55},
+{0x1.d1ffff975d6cfp-1, -0x1.82c08665fe1bep-58},
+{0x1.d5fffa2561c93p-1, -0x1.b04289bd295f3p-56},
+{0x1.d9fff9d228b0cp-1, 0x1.70251340fa236p-55},
+{0x1.de00065bc7e16p-1, -0x1.5011e16a4d80cp-56},
+{0x1.e200002f64791p-1, 0x1.9802f09ef62ep-55},
+{0x1.e600057d7a6d8p-1, -0x1.e0b75580cf7fap-56},
+{0x1.ea00027edc00cp-1, -0x1.c848309459811p-55},
+{0x1.ee0006cf5cb7cp-1, -0x1.f8027951576f4p-55},
+{0x1.f2000782b7dccp-1, -0x1.f81d97274538fp-55},
+{0x1.f6000260c450ap-1, -0x1.071002727ffdcp-59},
+{0x1.f9fffe88cd533p-1, -0x1.81bdce1fda8bp-58},
+{0x1.fdfffd50f8689p-1, 0x1.7f91acb918e6ep-55},
+{0x1.0200004292367p+0, 0x1.b7ff365324681p-54},
+{0x1.05fffe3e3d668p+0, 0x1.6fa08ddae957bp-55},
+{0x1.0a0000a85a757p+0, -0x1.7e2de80d3fb91p-58},
+{0x1.0e0001a5f3fccp+0, -0x1.1823305c5f014p-54},
+{0x1.11ffff8afbaf5p+0, -0x1.bfabb6680bac2p-55},
+{0x1.15fffe54d91adp+0, -0x1.d7f121737e7efp-54},
+{0x1.1a00011ac36e1p+0, 0x1.c000a0516f5ffp-54},
+{0x1.1e00019c84248p+0, -0x1.082fbe4da5dap-54},
+{0x1.220000ffe5e6ep+0, -0x1.8fdd04c9cfb43p-55},
+{0x1.26000269fd891p+0, 0x1.cfe2a7994d182p-55},
+{0x1.2a00029a6e6dap+0, -0x1.00273715e8bc5p-56},
+{0x1.2dfffe0293e39p+0, 0x1.b7c39dab2a6f9p-54},
+{0x1.31ffff7dcf082p+0, 0x1.df1336edc5254p-56},
+{0x1.35ffff05a8b6p+0, -0x1.e03564ccd31ebp-54},
+{0x1.3a0002e0eaeccp+0, 0x1.5f0e74bd3a477p-56},
+{0x1.3e000043bb236p+0, 0x1.c7dcb149d8833p-54},
+{0x1.4200002d187ffp+0, 0x1.e08afcf2d3d28p-56},
+{0x1.460000d387cb1p+0, 0x1.20837856599a6p-55},
+{0x1.4a00004569f89p+0, -0x1.9fa5c904fbcd2p-55},
+{0x1.4e000043543f3p+0, -0x1.81125ed175329p-56},
+{0x1.51fffcc027f0fp+0, 0x1.883d8847754dcp-54},
+{0x1.55ffffd87b36fp+0, -0x1.709e731d02807p-55},
+{0x1.59ffff21df7bap+0, 0x1.7f79f68727b02p-55},
+{0x1.5dfffebfc3481p+0, -0x1.180902e30e93ep-54},
+},
+#endif
+};

src/libc-shim/src/log2_data.h

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+#ifndef _LOG2_DATA_H
+#define _LOG2_DATA_H
+
+#include <features.h>
+
+#define LOG2_TABLE_BITS 6
+#define LOG2_POLY_ORDER 7
+#define LOG2_POLY1_ORDER 11
+extern const struct log2_data {
+	double invln2hi;
+	double invln2lo;
+	double poly[LOG2_POLY_ORDER - 1];
+	double poly1[LOG2_POLY1_ORDER - 1];
+	struct {
+		double invc, logc;
+	} tab[1 << LOG2_TABLE_BITS];
+#if !__FP_FAST_FMA
+	struct {
+		double chi, clo;
+	} tab2[1 << LOG2_TABLE_BITS];
+#endif
+} __log2_data;
+
+#endif

src/libc-shim/src/log2f.c

@@ -0,0 +1,72 @@
+/*
+ * Single-precision log2 function.
+ *
+ * Copyright (c) 2017-2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <math.h>
+#include <stdint.h>
+#include "libm.h"
+#include "log2f_data.h"
+
+/*
+LOG2F_TABLE_BITS = 4
+LOG2F_POLY_ORDER = 4
+
+ULP error: 0.752 (nearest rounding.)
+Relative error: 1.9 * 2^-26 (before rounding.)
+*/
+
+#define N (1 << LOG2F_TABLE_BITS)
+#define T __log2f_data.tab
+#define A __log2f_data.poly
+#define OFF 0x3f330000
+
+float log2f(float x)
+{
+	double_t z, r, r2, p, y, y0, invc, logc;
+	uint32_t ix, iz, top, tmp;
+	int k, i;
+
+	ix = asuint(x);
+	/* Fix sign of zero with downward rounding when x==1.  */
+	if (WANT_ROUNDING && predict_false(ix == 0x3f800000))
+		return 0;
+	if (predict_false(ix - 0x00800000 >= 0x7f800000 - 0x00800000)) {
+		/* x < 0x1p-126 or inf or nan.  */
+		if (ix * 2 == 0)
+			return __math_divzerof(1);
+		if (ix == 0x7f800000) /* log2(inf) == inf.  */
+			return x;
+		if ((ix & 0x80000000) || ix * 2 >= 0xff000000)
+			return __math_invalidf(x);
+		/* x is subnormal, normalize it.  */
+		ix = asuint(x * 0x1p23f);
+		ix -= 23 << 23;
+	}
+
+	/* x = 2^k z; where z is in range [OFF,2*OFF] and exact.
+	   The range is split into N subintervals.
+	   The ith subinterval contains z and c is near its center.  */
+	tmp = ix - OFF;
+	i = (tmp >> (23 - LOG2F_TABLE_BITS)) % N;
+	top = tmp & 0xff800000;
+	iz = ix - top;
+	k = (int32_t)tmp >> 23; /* arithmetic shift */
+	invc = T[i].invc;
+	logc = T[i].logc;
+	z = (double_t)asfloat(iz);
+
+	/* log2(x) = log1p(z/c-1)/ln2 + log2(c) + k */
+	r = z * invc - 1;
+	y0 = logc + (double_t)k;
+
+	/* Pipelined polynomial evaluation to approximate log1p(r)/ln2.  */
+	r2 = r * r;
+	y = A[1] * r + A[2];
+	y = A[0] * r2 + y;
+	p = A[3] * r + y0;
+	y = y * r2 + p;
+	return eval_as_float(y);
+}

src/libc-shim/src/log2f_data.c

@@ -0,0 +1,33 @@
+/*
+ * Data definition for log2f.
+ *
+ * Copyright (c) 2017-2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "log2f_data.h"
+
+const struct log2f_data __log2f_data = {
+  .tab = {
+  { 0x1.661ec79f8f3bep+0, -0x1.efec65b963019p-2 },
+  { 0x1.571ed4aaf883dp+0, -0x1.b0b6832d4fca4p-2 },
+  { 0x1.49539f0f010bp+0, -0x1.7418b0a1fb77bp-2 },
+  { 0x1.3c995b0b80385p+0, -0x1.39de91a6dcf7bp-2 },
+  { 0x1.30d190c8864a5p+0, -0x1.01d9bf3f2b631p-2 },
+  { 0x1.25e227b0b8eap+0, -0x1.97c1d1b3b7afp-3 },
+  { 0x1.1bb4a4a1a343fp+0, -0x1.2f9e393af3c9fp-3 },
+  { 0x1.12358f08ae5bap+0, -0x1.960cbbf788d5cp-4 },
+  { 0x1.0953f419900a7p+0, -0x1.a6f9db6475fcep-5 },
+  { 0x1p+0, 0x0p+0 },
+  { 0x1.e608cfd9a47acp-1, 0x1.338ca9f24f53dp-4 },
+  { 0x1.ca4b31f026aap-1, 0x1.476a9543891bap-3 },
+  { 0x1.b2036576afce6p-1, 0x1.e840b4ac4e4d2p-3 },
+  { 0x1.9c2d163a1aa2dp-1, 0x1.40645f0c6651cp-2 },
+  { 0x1.886e6037841edp-1, 0x1.88e9c2c1b9ff8p-2 },
+  { 0x1.767dcf5534862p-1, 0x1.ce0a44eb17bccp-2 },
+  },
+  .poly = {
+  -0x1.712b6f70a7e4dp-2, 0x1.ecabf496832ep-2, -0x1.715479ffae3dep-1,
+  0x1.715475f35c8b8p0,
+  }
+};

src/libc-shim/src/log2f_data.h

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2017-2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+#ifndef _LOG2F_DATA_H
+#define _LOG2F_DATA_H
+
+#include <features.h>
+
+#define LOG2F_TABLE_BITS 4
+#define LOG2F_POLY_ORDER 4
+extern const struct log2f_data {
+	struct {
+		double invc, logc;
+	} tab[1 << LOG2F_TABLE_BITS];
+	double poly[LOG2F_POLY_ORDER];
+} __log2f_data;
+
+#endif

src/libc-shim/src/log_data.c

@@ -0,0 +1,328 @@
+/*
+ * Data for log.
+ *
+ * Copyright (c) 2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "log_data.h"
+
+#define N (1 << LOG_TABLE_BITS)
+
+const struct log_data __log_data = {
+.ln2hi = 0x1.62e42fefa3800p-1,
+.ln2lo = 0x1.ef35793c76730p-45,
+.poly1 = {
+// relative error: 0x1.c04d76cp-63
+// in -0x1p-4 0x1.09p-4 (|log(1+x)| > 0x1p-4 outside the interval)
+-0x1p-1,
+0x1.5555555555577p-2,
+-0x1.ffffffffffdcbp-3,
+0x1.999999995dd0cp-3,
+-0x1.55555556745a7p-3,
+0x1.24924a344de3p-3,
+-0x1.fffffa4423d65p-4,
+0x1.c7184282ad6cap-4,
+-0x1.999eb43b068ffp-4,
+0x1.78182f7afd085p-4,
+-0x1.5521375d145cdp-4,
+},
+.poly = {
+// relative error: 0x1.926199e8p-56
+// abs error: 0x1.882ff33p-65
+// in -0x1.fp-9 0x1.fp-9
+-0x1.0000000000001p-1,
+0x1.555555551305bp-2,
+-0x1.fffffffeb459p-3,
+0x1.999b324f10111p-3,
+-0x1.55575e506c89fp-3,
+},
+/* Algorithm:
+
+	x = 2^k z
+	log(x) = k ln2 + log(c) + log(z/c)
+	log(z/c) = poly(z/c - 1)
+
+where z is in [1.6p-1; 1.6p0] which is split into N subintervals and z falls
+into the ith one, then table entries are computed as
+
+	tab[i].invc = 1/c
+	tab[i].logc = (double)log(c)
+	tab2[i].chi = (double)c
+	tab2[i].clo = (double)(c - (double)c)
+
+where c is near the center of the subinterval and is chosen by trying +-2^29
+floating point invc candidates around 1/center and selecting one for which
+
+	1) the rounding error in 0x1.8p9 + logc is 0,
+	2) the rounding error in z - chi - clo is < 0x1p-66 and
+	3) the rounding error in (double)log(c) is minimized (< 0x1p-66).
+
+Note: 1) ensures that k*ln2hi + logc can be computed without rounding error,
+2) ensures that z/c - 1 can be computed as (z - chi - clo)*invc with close to
+a single rounding error when there is no fast fma for z*invc - 1, 3) ensures
+that logc + poly(z/c - 1) has small error, however near x == 1 when
+|log(x)| < 0x1p-4, this is not enough so that is special cased.  */
+.tab = {
+{0x1.734f0c3e0de9fp+0, -0x1.7cc7f79e69000p-2},
+{0x1.713786a2ce91fp+0, -0x1.76feec20d0000p-2},
+{0x1.6f26008fab5a0p+0, -0x1.713e31351e000p-2},
+{0x1.6d1a61f138c7dp+0, -0x1.6b85b38287800p-2},
+{0x1.6b1490bc5b4d1p+0, -0x1.65d5590807800p-2},
+{0x1.69147332f0cbap+0, -0x1.602d076180000p-2},
+{0x1.6719f18224223p+0, -0x1.5a8ca86909000p-2},
+{0x1.6524f99a51ed9p+0, -0x1.54f4356035000p-2},
+{0x1.63356aa8f24c4p+0, -0x1.4f637c36b4000p-2},
+{0x1.614b36b9ddc14p+0, -0x1.49da7fda85000p-2},
+{0x1.5f66452c65c4cp+0, -0x1.445923989a800p-2},
+{0x1.5d867b5912c4fp+0, -0x1.3edf439b0b800p-2},
+{0x1.5babccb5b90dep+0, -0x1.396ce448f7000p-2},
+{0x1.59d61f2d91a78p+0, -0x1.3401e17bda000p-2},
+{0x1.5805612465687p+0, -0x1.2e9e2ef468000p-2},
+{0x1.56397cee76bd3p+0, -0x1.2941b3830e000p-2},
+{0x1.54725e2a77f93p+0, -0x1.23ec58cda8800p-2},
+{0x1.52aff42064583p+0, -0x1.1e9e129279000p-2},
+{0x1.50f22dbb2bddfp+0, -0x1.1956d2b48f800p-2},
+{0x1.4f38f4734ded7p+0, -0x1.141679ab9f800p-2},
+{0x1.4d843cfde2840p+0, -0x1.0edd094ef9800p-2},
+{0x1.4bd3ec078a3c8p+0, -0x1.09aa518db1000p-2},
+{0x1.4a27fc3e0258ap+0, -0x1.047e65263b800p-2},
+{0x1.4880524d48434p+0, -0x1.feb224586f000p-3},
+{0x1.46dce1b192d0bp+0, -0x1.f474a7517b000p-3},
+{0x1.453d9d3391854p+0, -0x1.ea4443d103000p-3},
+{0x1.43a2744b4845ap+0, -0x1.e020d44e9b000p-3},
+{0x1.420b54115f8fbp+0, -0x1.d60a22977f000p-3},
+{0x1.40782da3ef4b1p+0, -0x1.cc00104959000p-3},
+{0x1.3ee8f5d57fe8fp+0, -0x1.c202956891000p-3},
+{0x1.3d5d9a00b4ce9p+0, -0x1.b81178d811000p-3},
+{0x1.3bd60c010c12bp+0, -0x1.ae2c9ccd3d000p-3},
+{0x1.3a5242b75dab8p+0, -0x1.a45402e129000p-3},
+{0x1.38d22cd9fd002p+0, -0x1.9a877681df000p-3},
+{0x1.3755bc5847a1cp+0, -0x1.90c6d69483000p-3},
+{0x1.35dce49ad36e2p+0, -0x1.87120a645c000p-3},
+{0x1.34679984dd440p+0, -0x1.7d68fb4143000p-3},
+{0x1.32f5cceffcb24p+0, -0x1.73cb83c627000p-3},
+{0x1.3187775a10d49p+0, -0x1.6a39a9b376000p-3},
+{0x1.301c8373e3990p+0, -0x1.60b3154b7a000p-3},
+{0x1.2eb4ebb95f841p+0, -0x1.5737d76243000p-3},
+{0x1.2d50a0219a9d1p+0, -0x1.4dc7b8fc23000p-3},
+{0x1.2bef9a8b7fd2ap+0, -0x1.4462c51d20000p-3},
+{0x1.2a91c7a0c1babp+0, -0x1.3b08abc830000p-3},
+{0x1.293726014b530p+0, -0x1.31b996b490000p-3},
+{0x1.27dfa5757a1f5p+0, -0x1.2875490a44000p-3},
+{0x1.268b39b1d3bbfp+0, -0x1.1f3b9f879a000p-3},
+{0x1.2539d838ff5bdp+0, -0x1.160c8252ca000p-3},
+{0x1.23eb7aac9083bp+0, -0x1.0ce7f57f72000p-3},
+{0x1.22a012ba940b6p+0, -0x1.03cdc49fea000p-3},
+{0x1.2157996cc4132p+0, -0x1.f57bdbc4b8000p-4},
+{0x1.201201dd2fc9bp+0, -0x1.e370896404000p-4},
+{0x1.1ecf4494d480bp+0, -0x1.d17983ef94000p-4},
+{0x1.1d8f5528f6569p+0, -0x1.bf9674ed8a000p-4},
+{0x1.1c52311577e7cp+0, -0x1.adc79202f6000p-4},
+{0x1.1b17c74cb26e9p+0, -0x1.9c0c3e7288000p-4},
+{0x1.19e010c2c1ab6p+0, -0x1.8a646b372c000p-4},
+{0x1.18ab07bb670bdp+0, -0x1.78d01b3ac0000p-4},
+{0x1.1778a25efbcb6p+0, -0x1.674f145380000p-4},
+{0x1.1648d354c31dap+0, -0x1.55e0e6d878000p-4},
+{0x1.151b990275fddp+0, -0x1.4485cdea1e000p-4},
+{0x1.13f0ea432d24cp+0, -0x1.333d94d6aa000p-4},
+{0x1.12c8b7210f9dap+0, -0x1.22079f8c56000p-4},
+{0x1.11a3028ecb531p+0, -0x1.10e4698622000p-4},
+{0x1.107fbda8434afp+0, -0x1.ffa6c6ad20000p-5},
+{0x1.0f5ee0f4e6bb3p+0, -0x1.dda8d4a774000p-5},
+{0x1.0e4065d2a9fcep+0, -0x1.bbcece4850000p-5},
+{0x1.0d244632ca521p+0, -0x1.9a1894012c000p-5},
+{0x1.0c0a77ce2981ap+0, -0x1.788583302c000p-5},
+{0x1.0af2f83c636d1p+0, -0x1.5715e67d68000p-5},
+{0x1.09ddb98a01339p+0, -0x1.35c8a49658000p-5},
+{0x1.08cabaf52e7dfp+0, -0x1.149e364154000p-5},
+{0x1.07b9f2f4e28fbp+0, -0x1.e72c082eb8000p-6},
+{0x1.06ab58c358f19p+0, -0x1.a55f152528000p-6},
+{0x1.059eea5ecf92cp+0, -0x1.63d62cf818000p-6},
+{0x1.04949cdd12c90p+0, -0x1.228fb8caa0000p-6},
+{0x1.038c6c6f0ada9p+0, -0x1.c317b20f90000p-7},
+{0x1.02865137932a9p+0, -0x1.419355daa0000p-7},
+{0x1.0182427ea7348p+0, -0x1.81203c2ec0000p-8},
+{0x1.008040614b195p+0, -0x1.0040979240000p-9},
+{0x1.fe01ff726fa1ap-1, 0x1.feff384900000p-9},
+{0x1.fa11cc261ea74p-1, 0x1.7dc41353d0000p-7},
+{0x1.f6310b081992ep-1, 0x1.3cea3c4c28000p-6},
+{0x1.f25f63ceeadcdp-1, 0x1.b9fc114890000p-6},
+{0x1.ee9c8039113e7p-1, 0x1.1b0d8ce110000p-5},
+{0x1.eae8078cbb1abp-1, 0x1.58a5bd001c000p-5},
+{0x1.e741aa29d0c9bp-1, 0x1.95c8340d88000p-5},
+{0x1.e3a91830a99b5p-1, 0x1.d276aef578000p-5},
+{0x1.e01e009609a56p-1, 0x1.07598e598c000p-4},
+{0x1.dca01e577bb98p-1, 0x1.253f5e30d2000p-4},
+{0x1.d92f20b7c9103p-1, 0x1.42edd8b380000p-4},
+{0x1.d5cac66fb5ccep-1, 0x1.606598757c000p-4},
+{0x1.d272caa5ede9dp-1, 0x1.7da76356a0000p-4},
+{0x1.cf26e3e6b2ccdp-1, 0x1.9ab434e1c6000p-4},
+{0x1.cbe6da2a77902p-1, 0x1.b78c7bb0d6000p-4},
+{0x1.c8b266d37086dp-1, 0x1.d431332e72000p-4},
+{0x1.c5894bd5d5804p-1, 0x1.f0a3171de6000p-4},
+{0x1.c26b533bb9f8cp-1, 0x1.067152b914000p-3},
+{0x1.bf583eeece73fp-1, 0x1.147858292b000p-3},
+{0x1.bc4fd75db96c1p-1, 0x1.2266ecdca3000p-3},
+{0x1.b951e0c864a28p-1, 0x1.303d7a6c55000p-3},
+{0x1.b65e2c5ef3e2cp-1, 0x1.3dfc33c331000p-3},
+{0x1.b374867c9888bp-1, 0x1.4ba366b7a8000p-3},
+{0x1.b094b211d304ap-1, 0x1.5933928d1f000p-3},
+{0x1.adbe885f2ef7ep-1, 0x1.66acd2418f000p-3},
+{0x1.aaf1d31603da2p-1, 0x1.740f8ec669000p-3},
+{0x1.a82e63fd358a7p-1, 0x1.815c0f51af000p-3},
+{0x1.a5740ef09738bp-1, 0x1.8e92954f68000p-3},
+{0x1.a2c2a90ab4b27p-1, 0x1.9bb3602f84000p-3},
+{0x1.a01a01393f2d1p-1, 0x1.a8bed1c2c0000p-3},
+{0x1.9d79f24db3c1bp-1, 0x1.b5b515c01d000p-3},
+{0x1.9ae2505c7b190p-1, 0x1.c2967ccbcc000p-3},
+{0x1.9852ef297ce2fp-1, 0x1.cf635d5486000p-3},
+{0x1.95cbaeea44b75p-1, 0x1.dc1bd3446c000p-3},
+{0x1.934c69de74838p-1, 0x1.e8c01b8cfe000p-3},
+{0x1.90d4f2f6752e6p-1, 0x1.f5509c0179000p-3},
+{0x1.8e6528effd79dp-1, 0x1.00e6c121fb800p-2},
+{0x1.8bfce9fcc007cp-1, 0x1.071b80e93d000p-2},
+{0x1.899c0dabec30ep-1, 0x1.0d46b9e867000p-2},
+{0x1.87427aa2317fbp-1, 0x1.13687334bd000p-2},
+{0x1.84f00acb39a08p-1, 0x1.1980d67234800p-2},
+{0x1.82a49e8653e55p-1, 0x1.1f8ffe0cc8000p-2},
+{0x1.8060195f40260p-1, 0x1.2595fd7636800p-2},
+{0x1.7e22563e0a329p-1, 0x1.2b9300914a800p-2},
+{0x1.7beb377dcb5adp-1, 0x1.3187210436000p-2},
+{0x1.79baa679725c2p-1, 0x1.377266dec1800p-2},
+{0x1.77907f2170657p-1, 0x1.3d54ffbaf3000p-2},
+{0x1.756cadbd6130cp-1, 0x1.432eee32fe000p-2},
+},
+#if !__FP_FAST_FMA
+.tab2 = {
+{0x1.61000014fb66bp-1, 0x1.e026c91425b3cp-56},
+{0x1.63000034db495p-1, 0x1.dbfea48005d41p-55},
+{0x1.650000d94d478p-1, 0x1.e7fa786d6a5b7p-55},
+{0x1.67000074e6fadp-1, 0x1.1fcea6b54254cp-57},
+{0x1.68ffffedf0faep-1, -0x1.c7e274c590efdp-56},
+{0x1.6b0000763c5bcp-1, -0x1.ac16848dcda01p-55},
+{0x1.6d0001e5cc1f6p-1, 0x1.33f1c9d499311p-55},
+{0x1.6efffeb05f63ep-1, -0x1.e80041ae22d53p-56},
+{0x1.710000e86978p-1, 0x1.bff6671097952p-56},
+{0x1.72ffffc67e912p-1, 0x1.c00e226bd8724p-55},
+{0x1.74fffdf81116ap-1, -0x1.e02916ef101d2p-57},
+{0x1.770000f679c9p-1, -0x1.7fc71cd549c74p-57},
+{0x1.78ffffa7ec835p-1, 0x1.1bec19ef50483p-55},
+{0x1.7affffe20c2e6p-1, -0x1.07e1729cc6465p-56},
+{0x1.7cfffed3fc9p-1, -0x1.08072087b8b1cp-55},
+{0x1.7efffe9261a76p-1, 0x1.dc0286d9df9aep-55},
+{0x1.81000049ca3e8p-1, 0x1.97fd251e54c33p-55},
+{0x1.8300017932c8fp-1, -0x1.afee9b630f381p-55},
+{0x1.850000633739cp-1, 0x1.9bfbf6b6535bcp-55},
+{0x1.87000204289c6p-1, -0x1.bbf65f3117b75p-55},
+{0x1.88fffebf57904p-1, -0x1.9006ea23dcb57p-55},
+{0x1.8b00022bc04dfp-1, -0x1.d00df38e04b0ap-56},
+{0x1.8cfffe50c1b8ap-1, -0x1.8007146ff9f05p-55},
+{0x1.8effffc918e43p-1, 0x1.3817bd07a7038p-55},
+{0x1.910001efa5fc7p-1, 0x1.93e9176dfb403p-55},
+{0x1.9300013467bb9p-1, 0x1.f804e4b980276p-56},
+{0x1.94fffe6ee076fp-1, -0x1.f7ef0d9ff622ep-55},
+{0x1.96fffde3c12d1p-1, -0x1.082aa962638bap-56},
+{0x1.98ffff4458a0dp-1, -0x1.7801b9164a8efp-55},
+{0x1.9afffdd982e3ep-1, -0x1.740e08a5a9337p-55},
+{0x1.9cfffed49fb66p-1, 0x1.fce08c19bep-60},
+{0x1.9f00020f19c51p-1, -0x1.a3faa27885b0ap-55},
+{0x1.a10001145b006p-1, 0x1.4ff489958da56p-56},
+{0x1.a300007bbf6fap-1, 0x1.cbeab8a2b6d18p-55},
+{0x1.a500010971d79p-1, 0x1.8fecadd78793p-55},
+{0x1.a70001df52e48p-1, -0x1.f41763dd8abdbp-55},
+{0x1.a90001c593352p-1, -0x1.ebf0284c27612p-55},
+{0x1.ab0002a4f3e4bp-1, -0x1.9fd043cff3f5fp-57},
+{0x1.acfffd7ae1ed1p-1, -0x1.23ee7129070b4p-55},
+{0x1.aefffee510478p-1, 0x1.a063ee00edea3p-57},
+{0x1.b0fffdb650d5bp-1, 0x1.a06c8381f0ab9p-58},
+{0x1.b2ffffeaaca57p-1, -0x1.9011e74233c1dp-56},
+{0x1.b4fffd995badcp-1, -0x1.9ff1068862a9fp-56},
+{0x1.b7000249e659cp-1, 0x1.aff45d0864f3ep-55},
+{0x1.b8ffff987164p-1, 0x1.cfe7796c2c3f9p-56},
+{0x1.bafffd204cb4fp-1, -0x1.3ff27eef22bc4p-57},
+{0x1.bcfffd2415c45p-1, -0x1.cffb7ee3bea21p-57},
+{0x1.beffff86309dfp-1, -0x1.14103972e0b5cp-55},
+{0x1.c0fffe1b57653p-1, 0x1.bc16494b76a19p-55},
+{0x1.c2ffff1fa57e3p-1, -0x1.4feef8d30c6edp-57},
+{0x1.c4fffdcbfe424p-1, -0x1.43f68bcec4775p-55},
+{0x1.c6fffed54b9f7p-1, 0x1.47ea3f053e0ecp-55},
+{0x1.c8fffeb998fd5p-1, 0x1.383068df992f1p-56},
+{0x1.cb0002125219ap-1, -0x1.8fd8e64180e04p-57},
+{0x1.ccfffdd94469cp-1, 0x1.e7ebe1cc7ea72p-55},
+{0x1.cefffeafdc476p-1, 0x1.ebe39ad9f88fep-55},
+{0x1.d1000169af82bp-1, 0x1.57d91a8b95a71p-56},
+{0x1.d30000d0ff71dp-1, 0x1.9c1906970c7dap-55},
+{0x1.d4fffea790fc4p-1, -0x1.80e37c558fe0cp-58},
+{0x1.d70002edc87e5p-1, -0x1.f80d64dc10f44p-56},
+{0x1.d900021dc82aap-1, -0x1.47c8f94fd5c5cp-56},
+{0x1.dafffd86b0283p-1, 0x1.c7f1dc521617ep-55},
+{0x1.dd000296c4739p-1, 0x1.8019eb2ffb153p-55},
+{0x1.defffe54490f5p-1, 0x1.e00d2c652cc89p-57},
+{0x1.e0fffcdabf694p-1, -0x1.f8340202d69d2p-56},
+{0x1.e2fffdb52c8ddp-1, 0x1.b00c1ca1b0864p-56},
+{0x1.e4ffff24216efp-1, 0x1.2ffa8b094ab51p-56},
+{0x1.e6fffe88a5e11p-1, -0x1.7f673b1efbe59p-58},
+{0x1.e9000119eff0dp-1, -0x1.4808d5e0bc801p-55},
+{0x1.eafffdfa51744p-1, 0x1.80006d54320b5p-56},
+{0x1.ed0001a127fa1p-1, -0x1.002f860565c92p-58},
+{0x1.ef00007babcc4p-1, -0x1.540445d35e611p-55},
+{0x1.f0ffff57a8d02p-1, -0x1.ffb3139ef9105p-59},
+{0x1.f30001ee58ac7p-1, 0x1.a81acf2731155p-55},
+{0x1.f4ffff5823494p-1, 0x1.a3f41d4d7c743p-55},
+{0x1.f6ffffca94c6bp-1, -0x1.202f41c987875p-57},
+{0x1.f8fffe1f9c441p-1, 0x1.77dd1f477e74bp-56},
+{0x1.fafffd2e0e37ep-1, -0x1.f01199a7ca331p-57},
+{0x1.fd0001c77e49ep-1, 0x1.181ee4bceacb1p-56},
+{0x1.feffff7e0c331p-1, -0x1.e05370170875ap-57},
+{0x1.00ffff465606ep+0, -0x1.a7ead491c0adap-55},
+{0x1.02ffff3867a58p+0, -0x1.77f69c3fcb2ep-54},
+{0x1.04ffffdfc0d17p+0, 0x1.7bffe34cb945bp-54},
+{0x1.0700003cd4d82p+0, 0x1.20083c0e456cbp-55},
+{0x1.08ffff9f2cbe8p+0, -0x1.dffdfbe37751ap-57},
+{0x1.0b000010cda65p+0, -0x1.13f7faee626ebp-54},
+{0x1.0d00001a4d338p+0, 0x1.07dfa79489ff7p-55},
+{0x1.0effffadafdfdp+0, -0x1.7040570d66bcp-56},
+{0x1.110000bbafd96p+0, 0x1.e80d4846d0b62p-55},
+{0x1.12ffffae5f45dp+0, 0x1.dbffa64fd36efp-54},
+{0x1.150000dd59ad9p+0, 0x1.a0077701250aep-54},
+{0x1.170000f21559ap+0, 0x1.dfdf9e2e3deeep-55},
+{0x1.18ffffc275426p+0, 0x1.10030dc3b7273p-54},
+{0x1.1b000123d3c59p+0, 0x1.97f7980030188p-54},
+{0x1.1cffff8299eb7p+0, -0x1.5f932ab9f8c67p-57},
+{0x1.1effff48ad4p+0, 0x1.37fbf9da75bebp-54},
+{0x1.210000c8b86a4p+0, 0x1.f806b91fd5b22p-54},
+{0x1.2300003854303p+0, 0x1.3ffc2eb9fbf33p-54},
+{0x1.24fffffbcf684p+0, 0x1.601e77e2e2e72p-56},
+{0x1.26ffff52921d9p+0, 0x1.ffcbb767f0c61p-56},
+{0x1.2900014933a3cp+0, -0x1.202ca3c02412bp-56},
+{0x1.2b00014556313p+0, -0x1.2808233f21f02p-54},
+{0x1.2cfffebfe523bp+0, -0x1.8ff7e384fdcf2p-55},
+{0x1.2f0000bb8ad96p+0, -0x1.5ff51503041c5p-55},
+{0x1.30ffffb7ae2afp+0, -0x1.10071885e289dp-55},
+{0x1.32ffffeac5f7fp+0, -0x1.1ff5d3fb7b715p-54},
+{0x1.350000ca66756p+0, 0x1.57f82228b82bdp-54},
+{0x1.3700011fbf721p+0, 0x1.000bac40dd5ccp-55},
+{0x1.38ffff9592fb9p+0, -0x1.43f9d2db2a751p-54},
+{0x1.3b00004ddd242p+0, 0x1.57f6b707638e1p-55},
+{0x1.3cffff5b2c957p+0, 0x1.a023a10bf1231p-56},
+{0x1.3efffeab0b418p+0, 0x1.87f6d66b152bp-54},
+{0x1.410001532aff4p+0, 0x1.7f8375f198524p-57},
+{0x1.4300017478b29p+0, 0x1.301e672dc5143p-55},
+{0x1.44fffe795b463p+0, 0x1.9ff69b8b2895ap-55},
+{0x1.46fffe80475ep+0, -0x1.5c0b19bc2f254p-54},
+{0x1.48fffef6fc1e7p+0, 0x1.b4009f23a2a72p-54},
+{0x1.4afffe5bea704p+0, -0x1.4ffb7bf0d7d45p-54},
+{0x1.4d000171027dep+0, -0x1.9c06471dc6a3dp-54},
+{0x1.4f0000ff03ee2p+0, 0x1.77f890b85531cp-54},
+{0x1.5100012dc4bd1p+0, 0x1.004657166a436p-57},
+{0x1.530001605277ap+0, -0x1.6bfcece233209p-54},
+{0x1.54fffecdb704cp+0, -0x1.902720505a1d7p-55},
+{0x1.56fffef5f54a9p+0, 0x1.bbfe60ec96412p-54},
+{0x1.5900017e61012p+0, 0x1.87ec581afef9p-55},
+{0x1.5b00003c93e92p+0, -0x1.f41080abf0ccp-54},
+{0x1.5d0001d4919bcp+0, -0x1.8812afb254729p-54},
+{0x1.5efffe7b87a89p+0, -0x1.47eb780ed6904p-54},
+},
+#endif
+};

src/libc-shim/src/log_data.h

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+#ifndef _LOG_DATA_H
+#define _LOG_DATA_H
+
+#include <features.h>
+
+#define LOG_TABLE_BITS 7
+#define LOG_POLY_ORDER 6
+#define LOG_POLY1_ORDER 12
+extern const struct log_data {
+	double ln2hi;
+	double ln2lo;
+	double poly[LOG_POLY_ORDER - 1]; /* First coefficient is 1.  */
+	double poly1[LOG_POLY1_ORDER - 1];
+	struct {
+		double invc, logc;
+	} tab[1 << LOG_TABLE_BITS];
+#if !__FP_FAST_FMA
+	struct {
+		double chi, clo;
+	} tab2[1 << LOG_TABLE_BITS];
+#endif
+} __log_data;
+
+#endif

src/libc-shim/src/logf.c

@@ -0,0 +1,71 @@
+/*
+ * Single-precision log function.
+ *
+ * Copyright (c) 2017-2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <math.h>
+#include <stdint.h>
+#include "libm.h"
+#include "logf_data.h"
+
+/*
+LOGF_TABLE_BITS = 4
+LOGF_POLY_ORDER = 4
+
+ULP error: 0.818 (nearest rounding.)
+Relative error: 1.957 * 2^-26 (before rounding.)
+*/
+
+#define T __logf_data.tab
+#define A __logf_data.poly
+#define Ln2 __logf_data.ln2
+#define N (1 << LOGF_TABLE_BITS)
+#define OFF 0x3f330000
+
+float logf(float x)
+{
+	double_t z, r, r2, y, y0, invc, logc;
+	uint32_t ix, iz, tmp;
+	int k, i;
+
+	ix = asuint(x);
+	/* Fix sign of zero with downward rounding when x==1.  */
+	if (WANT_ROUNDING && predict_false(ix == 0x3f800000))
+		return 0;
+	if (predict_false(ix - 0x00800000 >= 0x7f800000 - 0x00800000)) {
+		/* x < 0x1p-126 or inf or nan.  */
+		if (ix * 2 == 0)
+			return __math_divzerof(1);
+		if (ix == 0x7f800000) /* log(inf) == inf.  */
+			return x;
+		if ((ix & 0x80000000) || ix * 2 >= 0xff000000)
+			return __math_invalidf(x);
+		/* x is subnormal, normalize it.  */
+		ix = asuint(x * 0x1p23f);
+		ix -= 23 << 23;
+	}
+
+	/* x = 2^k z; where z is in range [OFF,2*OFF] and exact.
+	   The range is split into N subintervals.
+	   The ith subinterval contains z and c is near its center.  */
+	tmp = ix - OFF;
+	i = (tmp >> (23 - LOGF_TABLE_BITS)) % N;
+	k = (int32_t)tmp >> 23; /* arithmetic shift */
+	iz = ix - (tmp & 0xff800000);
+	invc = T[i].invc;
+	logc = T[i].logc;
+	z = (double_t)asfloat(iz);
+
+	/* log(x) = log1p(z/c-1) + log(c) + k*Ln2 */
+	r = z * invc - 1;
+	y0 = logc + (double_t)k * Ln2;
+
+	/* Pipelined polynomial evaluation to approximate log1p(r).  */
+	r2 = r * r;
+	y = A[1] * r + A[2];
+	y = A[0] * r2 + y;
+	y = y * r2 + (y0 + r);
+	return eval_as_float(y);
+}

src/libc-shim/src/logf_data.c

@@ -0,0 +1,33 @@
+/*
+ * Data definition for logf.
+ *
+ * Copyright (c) 2017-2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "logf_data.h"
+
+const struct logf_data __logf_data = {
+  .tab = {
+  { 0x1.661ec79f8f3bep+0, -0x1.57bf7808caadep-2 },
+  { 0x1.571ed4aaf883dp+0, -0x1.2bef0a7c06ddbp-2 },
+  { 0x1.49539f0f010bp+0, -0x1.01eae7f513a67p-2 },
+  { 0x1.3c995b0b80385p+0, -0x1.b31d8a68224e9p-3 },
+  { 0x1.30d190c8864a5p+0, -0x1.6574f0ac07758p-3 },
+  { 0x1.25e227b0b8eap+0, -0x1.1aa2bc79c81p-3 },
+  { 0x1.1bb4a4a1a343fp+0, -0x1.a4e76ce8c0e5ep-4 },
+  { 0x1.12358f08ae5bap+0, -0x1.1973c5a611cccp-4 },
+  { 0x1.0953f419900a7p+0, -0x1.252f438e10c1ep-5 },
+  { 0x1p+0, 0x0p+0 },
+  { 0x1.e608cfd9a47acp-1, 0x1.aa5aa5df25984p-5 },
+  { 0x1.ca4b31f026aap-1, 0x1.c5e53aa362eb4p-4 },
+  { 0x1.b2036576afce6p-1, 0x1.526e57720db08p-3 },
+  { 0x1.9c2d163a1aa2dp-1, 0x1.bc2860d22477p-3 },
+  { 0x1.886e6037841edp-1, 0x1.1058bc8a07ee1p-2 },
+  { 0x1.767dcf5534862p-1, 0x1.4043057b6ee09p-2 },
+  },
+  .ln2 = 0x1.62e42fefa39efp-1,
+  .poly = {
+  -0x1.00ea348b88334p-2, 0x1.5575b0be00b6ap-2, -0x1.ffffef20a4123p-2,
+  }
+};

src/libc-shim/src/logf_data.h

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2017-2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+#ifndef _LOGF_DATA_H
+#define _LOGF_DATA_H
+
+#include <features.h>
+
+#define LOGF_TABLE_BITS 4
+#define LOGF_POLY_ORDER 4
+extern const struct logf_data {
+	struct {
+		double invc, logc;
+	} tab[1 << LOGF_TABLE_BITS];
+	double ln2;
+	double poly[LOGF_POLY_ORDER - 1]; /* First order coefficient is 1.  */
+} __logf_data;
+
+#endif

src/libc-shim/src/powf.c

@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2017-2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <math.h>
+#include <stdint.h>
+#include "libm.h"
+#include "exp2f_data.h"
+#include "powf_data.h"
+
+/*
+POWF_LOG2_POLY_ORDER = 5
+EXP2F_TABLE_BITS = 5
+
+ULP error: 0.82 (~ 0.5 + relerr*2^24)
+relerr: 1.27 * 2^-26 (Relative error ~= 128*Ln2*relerr_log2 + relerr_exp2)
+relerr_log2: 1.83 * 2^-33 (Relative error of logx.)
+relerr_exp2: 1.69 * 2^-34 (Relative error of exp2(ylogx).)
+*/
+
+#define N (1 << POWF_LOG2_TABLE_BITS)
+#define T __powf_log2_data.tab
+#define A __powf_log2_data.poly
+#define OFF 0x3f330000
+
+/* Subnormal input is normalized so ix has negative biased exponent.
+   Output is multiplied by N (POWF_SCALE) if TOINT_INTRINICS is set.  */
+static inline double_t log2_inline(uint32_t ix)
+{
+	double_t z, r, r2, r4, p, q, y, y0, invc, logc;
+	uint32_t iz, top, tmp;
+	int k, i;
+
+	/* x = 2^k z; where z is in range [OFF,2*OFF] and exact.
+	   The range is split into N subintervals.
+	   The ith subinterval contains z and c is near its center.  */
+	tmp = ix - OFF;
+	i = (tmp >> (23 - POWF_LOG2_TABLE_BITS)) % N;
+	top = tmp & 0xff800000;
+	iz = ix - top;
+	k = (int32_t)top >> (23 - POWF_SCALE_BITS); /* arithmetic shift */
+	invc = T[i].invc;
+	logc = T[i].logc;
+	z = (double_t)asfloat(iz);
+
+	/* log2(x) = log1p(z/c-1)/ln2 + log2(c) + k */
+	r = z * invc - 1;
+	y0 = logc + (double_t)k;
+
+	/* Pipelined polynomial evaluation to approximate log1p(r)/ln2.  */
+	r2 = r * r;
+	y = A[0] * r + A[1];
+	p = A[2] * r + A[3];
+	r4 = r2 * r2;
+	q = A[4] * r + y0;
+	q = p * r2 + q;
+	y = y * r4 + q;
+	return y;
+}
+
+#undef N
+#undef T
+#define N (1 << EXP2F_TABLE_BITS)
+#define T __exp2f_data.tab
+#define SIGN_BIAS (1 << (EXP2F_TABLE_BITS + 11))
+
+/* The output of log2 and thus the input of exp2 is either scaled by N
+   (in case of fast toint intrinsics) or not.  The unscaled xd must be
+   in [-1021,1023], sign_bias sets the sign of the result.  */
+static inline float exp2_inline(double_t xd, uint32_t sign_bias)
+{
+	uint64_t ki, ski, t;
+	double_t kd, z, r, r2, y, s;
+
+#if TOINT_INTRINSICS
+#define C __exp2f_data.poly_scaled
+	/* N*x = k + r with r in [-1/2, 1/2] */
+	kd = roundtoint(xd); /* k */
+	ki = converttoint(xd);
+#else
+#define C __exp2f_data.poly
+#define SHIFT __exp2f_data.shift_scaled
+	/* x = k/N + r with r in [-1/(2N), 1/(2N)] */
+	kd = eval_as_double(xd + SHIFT);
+	ki = asuint64(kd);
+	kd -= SHIFT; /* k/N */
+#endif
+	r = xd - kd;
+
+	/* exp2(x) = 2^(k/N) * 2^r ~= s * (C0*r^3 + C1*r^2 + C2*r + 1) */
+	t = T[ki % N];
+	ski = ki + sign_bias;
+	t += ski << (52 - EXP2F_TABLE_BITS);
+	s = asdouble(t);
+	z = C[0] * r + C[1];
+	r2 = r * r;
+	y = C[2] * r + 1;
+	y = z * r2 + y;
+	y = y * s;
+	return eval_as_float(y);
+}
+
+/* Returns 0 if not int, 1 if odd int, 2 if even int.  The argument is
+   the bit representation of a non-zero finite floating-point value.  */
+static inline int checkint(uint32_t iy)
+{
+	int e = iy >> 23 & 0xff;
+	if (e < 0x7f)
+		return 0;
+	if (e > 0x7f + 23)
+		return 2;
+	if (iy & ((1 << (0x7f + 23 - e)) - 1))
+		return 0;
+	if (iy & (1 << (0x7f + 23 - e)))
+		return 1;
+	return 2;
+}
+
+static inline int zeroinfnan(uint32_t ix)
+{
+	return 2 * ix - 1 >= 2u * 0x7f800000 - 1;
+}
+
+float powf(float x, float y)
+{
+	uint32_t sign_bias = 0;
+	uint32_t ix, iy;
+
+	ix = asuint(x);
+	iy = asuint(y);
+	if (predict_false(ix - 0x00800000 >= 0x7f800000 - 0x00800000 ||
+			  zeroinfnan(iy))) {
+		/* Either (x < 0x1p-126 or inf or nan) or (y is 0 or inf or nan).  */
+		if (predict_false(zeroinfnan(iy))) {
+			if (2 * iy == 0)
+				return issignalingf_inline(x) ? x + y : 1.0f;
+			if (ix == 0x3f800000)
+				return issignalingf_inline(y) ? x + y : 1.0f;
+			if (2 * ix > 2u * 0x7f800000 ||
+			    2 * iy > 2u * 0x7f800000)
+				return x + y;
+			if (2 * ix == 2 * 0x3f800000)
+				return 1.0f;
+			if ((2 * ix < 2 * 0x3f800000) == !(iy & 0x80000000))
+				return 0.0f; /* |x|<1 && y==inf or |x|>1 && y==-inf.  */
+			return y * y;
+		}
+		if (predict_false(zeroinfnan(ix))) {
+			float_t x2 = x * x;
+			if (ix & 0x80000000 && checkint(iy) == 1)
+				x2 = -x2;
+			/* Without the barrier some versions of clang hoist the 1/x2 and
+			   thus division by zero exception can be signaled spuriously.  */
+			// NOTE(orca): no fp barriers
+			//return iy & 0x80000000 ? fp_barrierf(1 / x2) : x2;
+			return iy & 0x80000000 ? (1 / x2) : x2;
+		}
+		/* x and y are non-zero finite.  */
+		if (ix & 0x80000000) {
+			/* Finite x < 0.  */
+			int yint = checkint(iy);
+			if (yint == 0)
+				return __math_invalidf(x);
+			if (yint == 1)
+				sign_bias = SIGN_BIAS;
+			ix &= 0x7fffffff;
+		}
+		if (ix < 0x00800000) {
+			/* Normalize subnormal x so exponent becomes negative.  */
+			ix = asuint(x * 0x1p23f);
+			ix &= 0x7fffffff;
+			ix -= 23 << 23;
+		}
+	}
+	double_t logx = log2_inline(ix);
+	double_t ylogx = y * logx; /* cannot overflow, y is single prec.  */
+	if (predict_false((asuint64(ylogx) >> 47 & 0xffff) >=
+			  asuint64(126.0 * POWF_SCALE) >> 47)) {
+		/* |y*log(x)| >= 126.  */
+		if (ylogx > 0x1.fffffffd1d571p+6 * POWF_SCALE)
+			return __math_oflowf(sign_bias);
+		if (ylogx <= -150.0 * POWF_SCALE)
+			return __math_uflowf(sign_bias);
+	}
+	return exp2_inline(ylogx, sign_bias);
+}

src/libc-shim/src/powf_data.c

@@ -0,0 +1,34 @@
+/*
+ * Data definition for powf.
+ *
+ * Copyright (c) 2017-2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "powf_data.h"
+
+const struct powf_log2_data __powf_log2_data = {
+  .tab = {
+  { 0x1.661ec79f8f3bep+0, -0x1.efec65b963019p-2 * POWF_SCALE },
+  { 0x1.571ed4aaf883dp+0, -0x1.b0b6832d4fca4p-2 * POWF_SCALE },
+  { 0x1.49539f0f010bp+0, -0x1.7418b0a1fb77bp-2 * POWF_SCALE },
+  { 0x1.3c995b0b80385p+0, -0x1.39de91a6dcf7bp-2 * POWF_SCALE },
+  { 0x1.30d190c8864a5p+0, -0x1.01d9bf3f2b631p-2 * POWF_SCALE },
+  { 0x1.25e227b0b8eap+0, -0x1.97c1d1b3b7afp-3 * POWF_SCALE },
+  { 0x1.1bb4a4a1a343fp+0, -0x1.2f9e393af3c9fp-3 * POWF_SCALE },
+  { 0x1.12358f08ae5bap+0, -0x1.960cbbf788d5cp-4 * POWF_SCALE },
+  { 0x1.0953f419900a7p+0, -0x1.a6f9db6475fcep-5 * POWF_SCALE },
+  { 0x1p+0, 0x0p+0 * POWF_SCALE },
+  { 0x1.e608cfd9a47acp-1, 0x1.338ca9f24f53dp-4 * POWF_SCALE },
+  { 0x1.ca4b31f026aap-1, 0x1.476a9543891bap-3 * POWF_SCALE },
+  { 0x1.b2036576afce6p-1, 0x1.e840b4ac4e4d2p-3 * POWF_SCALE },
+  { 0x1.9c2d163a1aa2dp-1, 0x1.40645f0c6651cp-2 * POWF_SCALE },
+  { 0x1.886e6037841edp-1, 0x1.88e9c2c1b9ff8p-2 * POWF_SCALE },
+  { 0x1.767dcf5534862p-1, 0x1.ce0a44eb17bccp-2 * POWF_SCALE },
+  },
+  .poly = {
+  0x1.27616c9496e0bp-2 * POWF_SCALE, -0x1.71969a075c67ap-2 * POWF_SCALE,
+  0x1.ec70a6ca7baddp-2 * POWF_SCALE, -0x1.7154748bef6c8p-1 * POWF_SCALE,
+  0x1.71547652ab82bp0 * POWF_SCALE,
+  }
+};

src/libc-shim/src/powf_data.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2017-2018, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+#ifndef _POWF_DATA_H
+#define _POWF_DATA_H
+
+#include "libm.h"
+#include "exp2f_data.h"
+
+#define POWF_LOG2_TABLE_BITS 4
+#define POWF_LOG2_POLY_ORDER 5
+#if TOINT_INTRINSICS
+#define POWF_SCALE_BITS EXP2F_TABLE_BITS
+#else
+#define POWF_SCALE_BITS 0
+#endif
+#define POWF_SCALE ((double)(1 << POWF_SCALE_BITS))
+extern const struct powf_log2_data {
+	struct {
+		double invc, logc;
+	} tab[1 << POWF_LOG2_TABLE_BITS];
+	double poly[POWF_LOG2_POLY_ORDER];
+} __powf_log2_data;
+
+#endif

src/libc-shim/src/tan.c

@@ -0,0 +1,72 @@
+/* origin: FreeBSD /usr/src/lib/msun/src/s_tan.c */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+/* tan(x)
+ * Return tangent function of x.
+ *
+ * kernel function:
+ *      __tan           ... tangent function on [-pi/4,pi/4]
+ *      __rem_pio2      ... argument reduction routine
+ *
+ * Method.
+ *      Let S,C and T denote the sin, cos and tan respectively on
+ *      [-PI/4, +PI/4]. Reduce the argument x to y1+y2 = x-k*pi/2
+ *      in [-pi/4 , +pi/4], and let n = k mod 4.
+ *      We have
+ *
+ *          n        sin(x)      cos(x)        tan(x)
+ *     ----------------------------------------------------------
+ *          0          S           C             T
+ *          1          C          -S            -1/T
+ *          2         -S          -C             T
+ *          3         -C           S            -1/T
+ *     ----------------------------------------------------------
+ *
+ * Special cases:
+ *      Let trig be any of sin, cos, or tan.
+ *      trig(+-INF)  is NaN, with signals;
+ *      trig(NaN)    is that NaN;
+ *
+ * Accuracy:
+ *      TRIG(x) returns trig(x) nearly rounded
+ */
+
+#include "libm.h"
+
+double __tan(double x, double y, int odd);
+
+double tan(double x)
+{
+	double y[2];
+	uint32_t ix;
+	unsigned n;
+
+	GET_HIGH_WORD(ix, x);
+	ix &= 0x7fffffff;
+
+	/* |x| ~< pi/4 */
+	if (ix <= 0x3fe921fb) {
+		if (ix < 0x3e400000) { /* |x| < 2**-27 */
+			/* raise inexact if x!=0 and underflow if subnormal */
+			FORCE_EVAL(ix < 0x00100000 ? x/0x1p120f : x+0x1p120f);
+			return x;
+		}
+		return __tan(x, 0.0, 0);
+	}
+
+	/* tan(Inf or NaN) is NaN */
+	if (ix >= 0x7ff00000)
+		return x - x;
+
+	/* argument reduction */
+	n = __rem_pio2(x, y);
+	return __tan(y[0], y[1], n&1);
+}

src/libc-shim/src/tanf.c

@@ -0,0 +1,66 @@
+/* origin: FreeBSD /usr/src/lib/msun/src/s_tanf.c */
+/*
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ * Optimized by Bruce D. Evans.
+ */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#include "libm.h"
+
+/* Small multiples of pi/2 rounded to double precision. */
+static const double
+t1pio2 = 1*M_PI_2, /* 0x3FF921FB, 0x54442D18 */
+t2pio2 = 2*M_PI_2, /* 0x400921FB, 0x54442D18 */
+t3pio2 = 3*M_PI_2, /* 0x4012D97C, 0x7F3321D2 */
+t4pio2 = 4*M_PI_2; /* 0x401921FB, 0x54442D18 */
+
+float __tandf(double x, int odd);
+
+float tanf(float x)
+{
+	double y;
+	uint32_t ix;
+	unsigned n, sign;
+
+	GET_FLOAT_WORD(ix, x);
+	sign = ix >> 31;
+	ix &= 0x7fffffff;
+
+	if (ix <= 0x3f490fda) {  /* |x| ~<= pi/4 */
+		if (ix < 0x39800000) {  /* |x| < 2**-12 */
+			/* raise inexact if x!=0 and underflow if subnormal */
+			FORCE_EVAL(ix < 0x00800000 ? x/0x1p120f : x+0x1p120f);
+			return x;
+		}
+		return __tandf(x, 0);
+	}
+	if (ix <= 0x407b53d1) {  /* |x| ~<= 5*pi/4 */
+		if (ix <= 0x4016cbe3)  /* |x| ~<= 3pi/4 */
+			return __tandf((sign ? x+t1pio2 : x-t1pio2), 1);
+		else
+			return __tandf((sign ? x+t2pio2 : x-t2pio2), 0);
+	}
+	if (ix <= 0x40e231d5) {  /* |x| ~<= 9*pi/4 */
+		if (ix <= 0x40afeddf)  /* |x| ~<= 7*pi/4 */
+			return __tandf((sign ? x+t3pio2 : x-t3pio2), 1);
+		else
+			return __tandf((sign ? x+t4pio2 : x-t4pio2), 0);
+	}
+
+	/* tan(Inf or NaN) is NaN */
+	if (ix >= 0x7f800000)
+		return x - x;
+
+	/* argument reduction */
+	n = __rem_pio2f(x, &y);
+	return __tandf(y, n&1);
+}

src/platform/native_debug.c

@@ -45,8 +45,8 @@ oc_log_output* OC_LOG_DEFAULT_OUTPUT = &oc_logDefaultOutput;
 
 void platform_log_push(oc_log_output* output,
                        oc_log_level level,
-                       const char* file,
                        const char* function,
+                       const char* file,
                        int line,
                        const char* fmt,
                        va_list ap)

src/platform/orca_debug.c

@@ -50,18 +50,18 @@ static oc_log_output oc_logDefaultOutput = { .kind = ORCA_LOG_OUTPUT_CONSOLE };
 oc_log_output* OC_LOG_DEFAULT_OUTPUT = &oc_logDefaultOutput;
 
 void ORCA_IMPORT(oc_bridge_log)(oc_log_level level,
-                                int fileLen,
-                                const char* file,
                                 int functionLen,
                                 const char* function,
+                                int fileLen,
+                                const char* file,
                                 int line,
                                 int msgLen,
                                 const char* msg);
 
 void platform_log_push(oc_log_output* output,
                        oc_log_level level,
-                       const char* file,
                        const char* function,
+                       const char* file,
                        int line,
                        const char* fmt,
                        va_list ap)
@@ -76,7 +76,7 @@ void platform_log_push(oc_log_output* output,
 
     oc_str8 string = oc_str8_list_join(scratch.arena, ctx.list);
 
-    oc_bridge_log(level, strlen(file), file, strlen(function), function, line, oc_str8_ip(string));
+    oc_bridge_log(level, strlen(function), function, strlen(file), file, line, oc_str8_ip(string));
 
     oc_scratch_end(scratch);
 }

src/platform/platform_debug.c

@@ -28,8 +28,8 @@ void oc_log_set_level(oc_log_level level)
 
 void platform_log_push(oc_log_output* output,
                        oc_log_level level,
-                       const char* file,
                        const char* function,
+                       const char* file,
                        int line,
                        const char* fmt,
                        va_list ap);
@@ -50,7 +50,7 @@ void oc_log_ext(oc_log_level level,
     {
         va_list ap;
         va_start(ap, fmt);
-        platform_log_push(__logConfig.output, level, file, function, line, fmt, ap);
+        platform_log_push(__logConfig.output, level, function, file, line, fmt, ap);
         va_end(ap);
     }
 }

src/runtime.c

@@ -134,10 +134,10 @@ void oc_bridge_clipboard_set_string(oc_wasm_str8 value)
 }
 
 void oc_bridge_log(oc_log_level level,
-                   int fileLen,
-                   char* file,
                    int functionLen,
                    char* function,
+                   int fileLen,
+                   char* file,
                    int line,
                    int msgLen,
                    char* msg)
@@ -179,14 +179,14 @@ void oc_bridge_log(oc_log_level level,
     }
     char* payload = (char*)entry + sizeof(log_entry);
 
-    entry->file.len = fileLen;
-    entry->file.ptr = payload;
-    payload += entry->file.len;
-
     entry->function.len = functionLen;
     entry->function.ptr = payload;
     payload += entry->function.len;
 
+    entry->file.len = fileLen;
+    entry->file.ptr = payload;
+    payload += entry->file.len;
+
     entry->msg.len = msgLen;
     entry->msg.ptr = payload;
     payload += entry->msg.len;
@@ -203,8 +203,8 @@ void oc_bridge_log(oc_log_level level,
     oc_list_push_back(&debug->logEntries, &entry->listElt);
 
     oc_log_ext(level,
-               file,
                function,
+               file,
                line,
                "%.*s\n",
                msgLen,
@@ -279,10 +279,14 @@ void orca_surface_render_commands(oc_surface surface,
 
     char* memBase = app->env.wasmMemory.ptr;
     u32 memSize = app->env.wasmMemory.committed;
+    oc_rect window_content_rect = oc_window_get_content_rect(app->window);
+
     if(((char*)primitives > memBase)
        && ((char*)primitives + primitiveCount * sizeof(oc_primitive) - memBase <= memSize)
        && ((char*)elements > memBase)
        && ((char*)elements + eltCount * sizeof(oc_path_elt) - memBase <= memSize)
+       && window_content_rect.w > 0
+       && window_content_rect.h > 0
        && oc_window_is_minimized(app->window) == false)
     {
         oc_surface_render_commands(surface,
@@ -352,8 +356,8 @@ void log_entry_ui(oc_debug_overlay* overlay, log_entry* entry)
 
             oc_str8 loc = oc_str8_pushf(scratch.arena,
                                         "%.*s() in %.*s:%i:",
-                                        oc_str8_ip(entry->file),
                                         oc_str8_ip(entry->function),
+                                        oc_str8_ip(entry->file),
                                         entry->line);
             oc_ui_label_str8(loc);
         }
@@ -680,6 +684,20 @@ i32 orca_runloop(void* user)
                 }
                 break;
 
+                case OC_EVENT_MOUSE_WHEEL:
+                {
+                    if(exports[OC_EXPORT_MOUSE_WHEEL])
+                    {
+                        const void* args[2] = { &event->mouse.deltaX, &event->mouse.deltaY };
+                        M3Result res = m3_Call(exports[OC_EXPORT_MOUSE_WHEEL], 2, args);
+                        if(res)
+                        {
+                            ORCA_WASM3_ABORT(app->env.m3Runtime, res, "Runtime error");
+                        }
+                    }
+                }
+                break;
+
                 case OC_EVENT_MOUSE_MOVE:
                 {
                     if(exports[OC_EXPORT_MOUSE_MOVE])

src/runtime_memory.c

@@ -5,25 +5,33 @@
 *  See LICENSE.txt for licensing information
 *
 **************************************************************************/
-
+#include <limits.h>
 #include "runtime.h"
 #include "runtime_memory.h"
 
-void* oc_wasm_memory_resize_callback(void* p, unsigned long size, void* userData)
+void* oc_wasm_memory_resize_callback(void* p, unsigned long newSize, void* userData)
 {
+    //NOTE: this is called by wasm3. The size passed includes wasm3 memory header.
+    //      We first align it on 4K page size
+
+    newSize = oc_align_up_pow2(newSize, 4 << 10);
+
     oc_wasm_memory* memory = (oc_wasm_memory*)userData;
 
-    if(memory->committed >= size)
+    if(memory->committed >= newSize)
     {
         return (memory->ptr);
     }
-    else if(memory->committed < memory->reserved)
+    else if(newSize <= memory->reserved)
     {
-        u32 commitSize = size - memory->committed;
+        u32 commitSize = newSize - memory->committed;
 
         oc_base_allocator* allocator = oc_base_allocator_default();
         oc_base_commit(allocator, memory->ptr + memory->committed, commitSize);
         memory->committed += commitSize;
+
+        OC_DEBUG_ASSERT((memory->committed & 0xfff) == 0, "Committed pointer is not aligned on page size");
+
         return (memory->ptr);
     }
     else
@@ -47,16 +55,21 @@ extern u32 oc_mem_grow(u64 size)
     oc_wasm_env* env = oc_runtime_get_env();
     oc_wasm_memory* memory = &env->wasmMemory;
 
-    size = oc_align_up_pow2(size, d_m3MemPageSize);
-    u64 totalSize = size + m3_GetMemorySize(env->m3Runtime);
+    u32 oldMemSize = m3_GetMemorySize(env->m3Runtime);
 
-    u32 addr = memory->committed;
+    //NOTE: compute total size and align on wasm memory page size
+    OC_ASSERT(oldMemSize <= UINT_MAX - size, "Memory size overflow");
+    u64 newMemSize = size + oldMemSize;
+
+    newMemSize = oc_align_up_pow2(newMemSize, d_m3MemPageSize);
 
     //NOTE: call resize memory, which will call our custom resize callback... this is a bit involved because
     //      wasm3 doesn't allow resizing the memory directly
-    M3Result res = ResizeMemory(env->m3Runtime, totalSize / d_m3MemPageSize);
+    M3Result res = ResizeMemory(env->m3Runtime, newMemSize / d_m3MemPageSize);
 
-    return (addr);
+    OC_DEBUG_ASSERT(oldMemSize + size <= m3_GetMemorySize(env->m3Runtime), "Memory returned by oc_mem_grow overflows wasm memory");
+
+    return (oldMemSize);
 }
 
 void* oc_wasm_address_to_ptr(oc_wasm_addr addr, oc_wasm_size size)

src/util/hash.c

@@ -8,8 +8,84 @@
 #include "hash.h"
 #include "platform/platform.h"
 
-#if OC_ARCH_X64
-    #include <immintrin.h>
+//xxhash64, copy-pasted from https://github.com/demetri/scribbles/blob/master/hashing/hash_functions.c
+// Thanks to Demetri Spanos
+
+uint64_t xxh_64(const void* key, int len, uint64_t h)
+{
+    // primes used in mul-rot updates
+    uint64_t p1 = 0x9e3779b185ebca87, p2 = 0xc2b2ae3d27d4eb4f,
+             p3 = 0x165667b19e3779f9, p4 = 0x85ebca77c2b2ae63, p5 = 0x27d4eb2f165667c5;
+
+    // inital 32-byte (4x8) wide hash state
+    uint64_t s[4] = { h + p1 + p2, h + p2, h, h - p1 };
+
+    // bulk work: process all 32 byte blocks
+    uint64_t* k32 = (uint64_t*)key;
+    for(int i = 0; i < (len / 32); i += 4)
+    {
+        uint64_t b[4] = { k32[i + 0], k32[i + 1], k32[i + 2], k32[i + 3] };
+        for(int j = 0; j < 4; j++)
+            b[j] = b[j] * p2 + s[j];
+        for(int j = 0; j < 4; j++)
+            s[j] = ((b[j] << 31) | (b[j] >> 33)) * p1;
+    }
+
+    // mix 32-byte state down to 8-byte state, initalize to value for short keys
+    uint64_t s64 = (s[2] + p5);
+    if(len > 32)
+    {
+        s64 = ((s[0] << 1) | (s[0] >> 63)) + ((s[1] << 7) | (s[1] >> 57)) + ((s[2] << 12) | (s[2] >> 52)) + ((s[3] << 18) | (s[3] >> 46));
+        for(int i = 0; i < 4; i++)
+        {
+            uint64_t ps = (((s[i] * p2) << 31) | ((s[i] * p2) >> 33)) * p1;
+            s64 = (s64 ^ ps) * p1 + p4;
+        }
+    }
+    s64 += len;
+
+    // up to 31 bytes remain, process 0-3 8 byte blocks
+    uint8_t* tail = (uint8_t*)(((char*)key) + (len / 32) * 32);
+    for(int i = 0; i < (len & 31) / 8; i++, tail += 8)
+    {
+        uint64_t b = (*((uint64_t*)tail)) * p2;
+        b = (((b << 31) | (b >> 33)) * p1) ^ s64;
+        s64 = ((b << 27) | (b >> 37)) * p1 + p4;
+    }
+
+    // up to 7 bytes remain, process 0-1 4 byte block
+    for(int i = 0; i < (len & 7) / 4; i++, tail += 4)
+    {
+        uint64_t b = s64 ^ (*(uint32_t*)tail) * p1;
+        s64 = ((b << 23) | (b >> 41)) * p2 + p3;
+    }
+
+    // up to 3 bytes remain, process 0-3 1 byte blocks
+    for(int i = 0; i < (len & 3); i++, tail++)
+    {
+        uint64_t b = s64 ^ (*tail) * p5;
+        s64 = ((b << 11) | (b >> 53)) * p1;
+    }
+
+    // finalization mix
+    s64 = (s64 ^ (s64 >> 33)) * p2;
+    s64 = (s64 ^ (s64 >> 29)) * p3;
+    return (s64 ^ (s64 >> 32));
+}
+
+u64 oc_hash_xx64_string_seed(oc_str8 string, u64 seed)
+{
+    return (xxh_64(string.ptr, string.len, seed));
+}
+
+u64 oc_hash_xx64_string(oc_str8 string)
+{
+    return (xxh_64(string.ptr, string.len, 0));
+}
+
+#if 0 //NOTE(martin): keep that here cause we could want to use them when aes is available, but we don't for now
+    #if OC_ARCH_X64
+        #include <immintrin.h>
 
 u64 oc_hash_aes_u64(u64 x)
 {
@@ -127,79 +203,5 @@ u64 oc_hash_aes_string_seed(oc_str8 string, u64 seed)
     u64 result = _mm_extract_epi64(hash, 0);
     return (result);
 }
-#endif // OC_ARCH_X64
-
-//xxhash64, copy-pasted from https://github.com/demetri/scribbles/blob/master/hashing/hash_functions.c
-// Thanks to Demetri Spanos
-
-uint64_t xxh_64(const void* key, int len, uint64_t h)
-{
-    // primes used in mul-rot updates
-    uint64_t p1 = 0x9e3779b185ebca87, p2 = 0xc2b2ae3d27d4eb4f,
-             p3 = 0x165667b19e3779f9, p4 = 0x85ebca77c2b2ae63, p5 = 0x27d4eb2f165667c5;
-
-    // inital 32-byte (4x8) wide hash state
-    uint64_t s[4] = { h + p1 + p2, h + p2, h, h - p1 };
-
-    // bulk work: process all 32 byte blocks
-    uint64_t* k32 = (uint64_t*)key;
-    for(int i = 0; i < (len / 32); i += 4)
-    {
-        uint64_t b[4] = { k32[i + 0], k32[i + 1], k32[i + 2], k32[i + 3] };
-        for(int j = 0; j < 4; j++)
-            b[j] = b[j] * p2 + s[j];
-        for(int j = 0; j < 4; j++)
-            s[j] = ((b[j] << 31) | (b[j] >> 33)) * p1;
-    }
-
-    // mix 32-byte state down to 8-byte state, initalize to value for short keys
-    uint64_t s64 = (s[2] + p5);
-    if(len > 32)
-    {
-        s64 = ((s[0] << 1) | (s[0] >> 63)) + ((s[1] << 7) | (s[1] >> 57)) + ((s[2] << 12) | (s[2] >> 52)) + ((s[3] << 18) | (s[3] >> 46));
-        for(int i = 0; i < 4; i++)
-        {
-            uint64_t ps = (((s[i] * p2) << 31) | ((s[i] * p2) >> 33)) * p1;
-            s64 = (s64 ^ ps) * p1 + p4;
-        }
-    }
-    s64 += len;
-
-    // up to 31 bytes remain, process 0-3 8 byte blocks
-    uint8_t* tail = (uint8_t*)(((char*)key) + (len / 32) * 32);
-    for(int i = 0; i < (len & 31) / 8; i++, tail += 8)
-    {
-        uint64_t b = (*((uint64_t*)tail)) * p2;
-        b = (((b << 31) | (b >> 33)) * p1) ^ s64;
-        s64 = ((b << 27) | (b >> 37)) * p1 + p4;
-    }
-
-    // up to 7 bytes remain, process 0-1 4 byte block
-    for(int i = 0; i < (len & 7) / 4; i++, tail += 4)
-    {
-        uint64_t b = s64 ^ (*(uint32_t*)tail) * p1;
-        s64 = ((b << 23) | (b >> 41)) * p2 + p3;
-    }
-
-    // up to 3 bytes remain, process 0-3 1 byte blocks
-    for(int i = 0; i < (len & 3); i++, tail++)
-    {
-        uint64_t b = s64 ^ (*tail) * p5;
-        s64 = ((b << 11) | (b >> 53)) * p1;
-    }
-
-    // finalization mix
-    s64 = (s64 ^ (s64 >> 33)) * p2;
-    s64 = (s64 ^ (s64 >> 29)) * p3;
-    return (s64 ^ (s64 >> 32));
-}
-
-u64 oc_hash_xx64_string_seed(oc_str8 string, u64 seed)
-{
-    return (xxh_64(string.ptr, string.len, seed));
-}
-
-u64 oc_hash_xx64_string(oc_str8 string)
-{
-    return (xxh_64(string.ptr, string.len, 0));
-}
+    #endif // OC_ARCH_X64
+#endif     // 0

src/util/hash.h

@@ -12,17 +12,11 @@
 #include "typedefs.h"
 
 #ifdef __cplusplus
-extern "C"
-{
+extern "C" {
 #endif
 
-    ORCA_API u64 oc_hash_aes_u64(u64 x);
-    ORCA_API u64 oc_hash_aes_u64_x2(u64 x, u64 y);
-    ORCA_API u64 oc_hash_aes_string(oc_str8 string);
-    ORCA_API u64 oc_hash_aes_string_seed(oc_str8 string, u64 seed);
-
-    ORCA_API u64 oc_hash_xx64_string_seed(oc_str8 string, u64 seed);
-    ORCA_API u64 oc_hash_xx64_string(oc_str8 string);
+ORCA_API u64 oc_hash_xx64_string_seed(oc_str8 string, u64 seed);
+ORCA_API u64 oc_hash_xx64_string(oc_str8 string);
 
 #ifdef __cplusplus
 } // extern "C"

src/util/memory.c

@@ -13,27 +13,27 @@
 #if OC_PLATFORM_ORCA
 enum
 {
-    OC_ARENA_DEFAULT_RESERVE_SIZE = 1 << 20
+    OC_ARENA_DEFAULT_RESERVE_SIZE = 1 << 20,
 };
 #else
 enum
 {
-    OC_ARENA_DEFAULT_RESERVE_SIZE = 1 << 30
+    OC_ARENA_DEFAULT_RESERVE_SIZE = 1 << 30,
 };
 #endif
 
 enum
 {
-    OC_ARENA_COMMIT_ALIGNMENT = 4 << 10
+    OC_ARENA_COMMIT_ALIGNMENT = 4 << 10,
 };
 
 //--------------------------------------------------------------------------------
 //NOTE(martin): memory arena
 //--------------------------------------------------------------------------------
 
-oc_arena_chunk* oc_arena_chunk_alloc(oc_arena* arena, u64 reserveSize)
+oc_arena_chunk* oc_arena_chunk_alloc(oc_arena* arena, u64 chunkMinSize)
 {
-    reserveSize = oc_align_up_pow2(reserveSize, OC_ARENA_COMMIT_ALIGNMENT);
+    u64 reserveSize = oc_align_up_pow2(chunkMinSize + sizeof(oc_arena_chunk), OC_ARENA_COMMIT_ALIGNMENT);
     u64 commitSize = oc_align_up_pow2(sizeof(oc_arena_chunk), OC_ARENA_COMMIT_ALIGNMENT);
 
     char* mem = oc_base_reserve(arena->base, reserveSize);
@@ -77,18 +77,25 @@ void oc_arena_cleanup(oc_arena* arena)
 }
 
 void* oc_arena_push(oc_arena* arena, u64 size)
+{
+    return oc_arena_push_aligned(arena, size, 1);
+}
+
+void* oc_arena_push_aligned(oc_arena* arena, u64 size, u32 alignment)
 {
     oc_arena_chunk* chunk = arena->currentChunk;
     OC_ASSERT(chunk);
 
-    u64 nextOffset = chunk->offset + size;
+    u64 alignedOffset = oc_align_up_pow2(chunk->offset, alignment);
+    u64 nextOffset = alignedOffset + size;
     u64 lastCap = chunk->cap;
     while(nextOffset > chunk->cap)
     {
         chunk = oc_list_next_entry(arena->chunks, chunk, oc_arena_chunk, listElt);
         if(chunk)
         {
-            nextOffset = chunk->offset + size;
+            alignedOffset = oc_align_up_pow2(chunk->offset, alignment);
+            nextOffset = alignedOffset + size;
             lastCap = chunk->cap;
         }
         else
@@ -98,10 +105,11 @@ void* oc_arena_push(oc_arena* arena, u64 size)
     }
     if(!chunk)
     {
-        u64 reserveSize = oc_max(lastCap * 1.5, size);
+        u64 chunkMinSize = oc_max(lastCap * 1.5, size + alignment);
 
-        chunk = oc_arena_chunk_alloc(arena, reserveSize);
-        nextOffset = chunk->offset + size;
+        chunk = oc_arena_chunk_alloc(arena, chunkMinSize);
+        alignedOffset = oc_align_up_pow2(chunk->offset, alignment);
+        nextOffset = alignedOffset + size;
     }
     OC_ASSERT(nextOffset <= chunk->cap);
 
@@ -115,8 +123,8 @@ void* oc_arena_push(oc_arena* arena, u64 size)
         oc_base_commit(arena->base, chunk->ptr + chunk->committed, commitSize);
         chunk->committed = nextCommitted;
     }
-    char* p = chunk->ptr + chunk->offset;
-    chunk->offset += size;
+    char* p = chunk->ptr + alignedOffset;
+    chunk->offset = nextOffset;
 
     return (p);
 }

src/util/memory.h

@@ -55,13 +55,14 @@ ORCA_API void oc_arena_init_with_options(oc_arena* arena, oc_arena_options* opti
 ORCA_API void oc_arena_cleanup(oc_arena* arena);
 
 ORCA_API void* oc_arena_push(oc_arena* arena, u64 size);
+ORCA_API void* oc_arena_push_aligned(oc_arena* arena, u64 size, u32 alignment);
 ORCA_API void oc_arena_clear(oc_arena* arena);
 
 ORCA_API oc_arena_scope oc_arena_scope_begin(oc_arena* arena);
 ORCA_API void oc_arena_scope_end(oc_arena_scope scope);
 
-#define oc_arena_push_type(arena, type) ((type*)oc_arena_push(arena, sizeof(type)))
-#define oc_arena_push_array(arena, type, count) ((type*)oc_arena_push(arena, sizeof(type) * (count)))
+#define oc_arena_push_type(arena, type) ((type*)oc_arena_push_aligned(arena, sizeof(type), _Alignof(type)))
+#define oc_arena_push_array(arena, type, count) ((type*)oc_arena_push_aligned(arena, sizeof(type) * (count), _Alignof(type)))
 
 //--------------------------------------------------------------------------------
 //NOTE(martin): memory pool

src/wasmbind/core_api.json

@@ -5,16 +5,16 @@
 	"ret": {"name": "void", "tag": "v"},
 	"args": [ {"name": "level",
 			   "type": {"name": "oc_log_level", "tag": "i"}},
-			  {"name": "fileLen",
-			   "type": {"name": "int", "tag": "i"}},
-			  {"name": "file",
-			   "type": {"name": "char*", "tag": "p"},
-				"len": {"count": "fileLen"}},
 			  {"name": "functionLen",
 			   "type": {"name": "int", "tag": "i"}},
 			  {"name": "function",
 			   "type": {"name": "char*", "tag": "p"},
 				"len": {"count": "functionLen"}},
+              {"name": "fileLen",
+			   "type": {"name": "int", "tag": "i"}},
+			  {"name": "file",
+			   "type": {"name": "char*", "tag": "p"},
+				"len": {"count": "fileLen"}},
 			  {"name": "line",
 			   "type": {"name": "int", "tag": "i"}},
 			  {"name": "msgLen",