notaz.gp2x.de / pcsx_rearmed.git / blame
| Commit | Line | Data |
|---|---|---|
| 3719602c PC |
1 | /* Copyright (C) 2010-2020 The RetroArch team |
| 2 | * | |
| 3 | * --------------------------------------------------------------------------------------- | |
| 4 | * The following license statement only applies to this file (fxp.h). | |
| 5 | * --------------------------------------------------------------------------------------- | |
| 6 | * | |
| 7 | * Permission is hereby granted, free of charge, | |
| 8 | * to any person obtaining a copy of this software and associated documentation files (the "Software"), | |
| 9 | * to deal in the Software without restriction, including without limitation the rights to | |
| 10 | * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, | |
| 11 | * and to permit persons to whom the Software is furnished to do so, subject to the following conditions: | |
| 12 | * | |
| 13 | * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. | |
| 14 | * | |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, | |
| 16 | * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
| 18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | |
| 19 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
| 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| 21 | */ | |
| 22 | ||
| 23 | #ifndef __LIBRETRO_SDK_MATH_FXP_H__ | |
| 24 | #define __LIBRETRO_SDK_MATH_FXP_H__ | |
| 25 | ||
| 26 | #include <stdint.h> | |
| 27 | ||
| 28 | #ifdef _MSC_VER | |
| 29 | #include <intrin.h> | |
| 30 | #endif | |
| 31 | ||
| 32 | #include <retro_inline.h> | |
| 33 | ||
| 34 | static INLINE int64_t fx32_mul(const int32_t a, const int32_t b) | |
| 35 | { | |
| 36 | #ifdef _MSC_VER | |
| 37 | return __emul(a, b); | |
| 38 | #else | |
| 39 | return ((int64_t)a) * ((int64_t)b); | |
| 40 | #endif | |
| 41 | } | |
| 42 | ||
| 43 | static INLINE int32_t fx32_shiftdown(const int64_t a) | |
| 44 | { | |
| 45 | #ifdef _MSC_VER | |
| 46 | return (int32_t)__ll_rshift(a, 12); | |
| 47 | #else | |
| 48 | return (int32_t)(a >> 12); | |
| 49 | #endif | |
| 50 | } | |
| 51 | ||
| 52 | static INLINE int64_t fx32_shiftup(const int32_t a) | |
| 53 | { | |
| 54 | #ifdef _MSC_VER | |
| 55 | return __ll_lshift(a, 12); | |
| 56 | #else | |
| 57 | return ((int64_t)a) << 12; | |
| 58 | #endif | |
| 59 | } | |
| 60 | ||
| 61 | #endif |