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62 lines
2 KiB
C
62 lines
2 KiB
C
/* Copyright (C) 2010-2020 The RetroArch team
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*
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* ---------------------------------------------------------------------------------------
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* The following license statement only applies to this file (fxp.h).
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* ---------------------------------------------------------------------------------------
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*
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* Permission is hereby granted, free of charge,
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* to any person obtaining a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __LIBRETRO_SDK_MATH_FXP_H__
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#define __LIBRETRO_SDK_MATH_FXP_H__
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#include <stdint.h>
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#ifdef _MSC_VER
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#include <intrin.h>
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#endif
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#include <retro_inline.h>
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static INLINE int64_t fx32_mul(const int32_t a, const int32_t b)
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{
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#ifdef _MSC_VER
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return __emul(a, b);
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#else
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return ((int64_t)a) * ((int64_t)b);
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#endif
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}
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static INLINE int32_t fx32_shiftdown(const int64_t a)
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{
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#ifdef _MSC_VER
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return (int32_t)__ll_rshift(a, 12);
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#else
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return (int32_t)(a >> 12);
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#endif
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}
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static INLINE int64_t fx32_shiftup(const int32_t a)
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{
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#ifdef _MSC_VER
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return __ll_lshift(a, 12);
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#else
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return ((int64_t)a) << 12;
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#endif
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}
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#endif
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