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[LIBM] Import win-libm from AMD

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Source: https://github.com/amd/win-libm
This commit is contained in:
Timo Kreuzer 2022-06-12 12:02:01 +02:00
parent 081c637c06
commit 4afb647c78
82 changed files with 22392 additions and 0 deletions
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66
sdk/lib/crt/math/libm_sse2/fma3_available.c Normal file
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/*******************************************************************************
MIT License
-----------
Copyright (c) 2002-2019 Advanced Micro Devices, Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this Software and associated documentaon 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.
*******************************************************************************/
#ifdef TEST_STANDALONE
#include <stdio.h>
#pragma section (".CRT$XIC",long,read)
typedef void (__cdecl *_PIFV)(void);
#else
#include <sect_attribs.h>
#include <windows.h>
#include <cruntime.h>
#include <internal.h>
#endif
#define _CRTALLOC(x) __declspec(allocate(x))
int __fma3_is_available = 0;
int __use_fma3_lib = 0;
int __cdecl _set_FMA3_enable(int flag)
{
if (__fma3_is_available) __use_fma3_lib = flag;
return __use_fma3_lib;
}
int __fma3_lib_init(void);
_CRTALLOC(".CRT$XIC") static _PIFV init_fma3 = __fma3_lib_init;
int __fma3_lib_init(void)
{
int CPUID[4]; // CPUID[2] is ECX;
__fma3_is_available = 0;
__cpuid(CPUID, 1);
if (CPUID[2] & (1 << 12)) {
__fma3_is_available = 1;
}
__use_fma3_lib = __fma3_is_available;
return 0;
}