1 /* Copyright (C) 2010-2020 The RetroArch team
3 * ---------------------------------------------------------------------------------------
4 * The following license statement only applies to this file (fxp.h).
5 * ---------------------------------------------------------------------------------------
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:
13 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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,
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20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 #ifndef __LIBRETRO_SDK_MATH_FXP_H__
24 #define __LIBRETRO_SDK_MATH_FXP_H__
32 #include <retro_inline.h>
34 static INLINE int64_t fx32_mul(const int32_t a, const int32_t b)
39 return ((int64_t)a) * ((int64_t)b);
43 static INLINE int32_t fx32_shiftdown(const int64_t a)
46 return (int32_t)__ll_rshift(a, 12);
48 return (int32_t)(a >> 12);
52 static INLINE int64_t fx32_shiftup(const int32_t a)
55 return __ll_lshift(a, 12);
57 return ((int64_t)a) << 12;