[libc-commits] [libc] [llvm] [APFloat] Add exp function for APFloat::IEEESsingle using expf implementation from LLVM libc. (PR #143959)

[LLVM Continuous Integration via libc-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-win-fast` running on `as-builder-3` while building `libc,llvm` at step 6 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/2/builds/40300

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (build-unified-tree) failure: build (failure)
...
[392/4362] Generating VCSRevision.h
[393/4362] Building CXX object lib\Support\CMakeFiles\LLVMSupport.dir\raw_socket_stream.cpp.obj
[394/4362] Building CXX object lib\Support\CMakeFiles\LLVMSupport.dir\DynamicLibrary.cpp.obj
[395/4362] Building CXX object lib\Support\CMakeFiles\LLVMSupport.dir\Atomic.cpp.obj
[396/4362] Building CXX object lib\Support\CMakeFiles\LLVMSupport.dir\Memory.cpp.obj
[397/4362] Building CXX object lib\Support\CMakeFiles\LLVMSupport.dir\Threading.cpp.obj
[398/4362] Building CXX object lib\Support\CMakeFiles\LLVMSupport.dir\Program.cpp.obj
[399/4362] Building CXX object lib\Support\CMakeFiles\LLVMSupport.dir\Process.cpp.obj
[400/4362] Building CXX object lib\Support\CMakeFiles\LLVMSupport.dir\Signals.cpp.obj
[401/4362] Building CXX object lib\Support\CMakeFiles\LLVMSupport.dir\APFloat.cpp.obj
FAILED: lib/Support/CMakeFiles/LLVMSupport.dir/APFloat.cpp.obj 
C:\ninja\ccache.exe C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1444~1.352\bin\Hostx64\x64\cl.exe  /nologo /TP -DGTEST_HAS_RTTI=0 -DUNICODE -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_NONSTDC_NO_WARNINGS -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_HAS_EXCEPTIONS=0 -D_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_UNICODE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -IC:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\build\lib\Support -IC:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\llvm\lib\Support -IC:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\build\include -IC:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\llvm\include -IC:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\llvm\..\third-party\siphash\include -IC:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\build\include\..\..\libc /DWIN32 /D_WINDOWS   /Zc:inline /Zc:preprocessor /Zc:__cplusplus /Oi /bigobj /permissive- /W4 -wd4141 -wd4146 -wd4244 -wd4267 -wd4291 -wd4351 -wd4456 -wd4457 -wd4458 -wd4459 -wd4503 -wd4624 -wd4722 -wd4100 -wd4127 -wd4512 -wd4505 -wd4610 -wd4510 -wd4702 -wd4245 -wd4706 -wd4310 -wd4701 -wd4703 -wd4389 -wd4611 -wd4805 -wd4204 -wd4577 -wd4091 -wd4592 -wd4319 -wd4709 -wd5105 -wd4324 -wd4251 -wd4275 -w14062 -we4238 /Gw /O2 /Ob2 /DNDEBUG -MD -std:c++17  /EHs-c- /GR- /showIncludes /Folib\Support\CMakeFiles\LLVMSupport.dir\APFloat.cpp.obj /Fdlib\Support\CMakeFiles\LLVMSupport.dir\LLVMSupport.pdb /FS -c C:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\llvm\lib\Support\APFloat.cpp
C:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\llvm\lib\Support\APFloat.cpp(32): fatal error C1083: Cannot open include file: 'shared/math.h': No such file or directory
[402/4362] Building CXX object lib\Support\CMakeFiles\LLVMSupport.dir\Path.cpp.obj
[403/4362] Building CXX object lib\Support\CMakeFiles\LLVMSupport.dir\ScaledNumber.cpp.obj
[404/4362] Building CXX object lib\Support\CMakeFiles\LLVMSupport.dir\Z3Solver.cpp.obj
[405/4362] Building CXX object lib\Support\CMakeFiles\LLVMSupport.dir\StringRef.cpp.obj
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/143959