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 (complex.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 | #ifndef __LIBRETRO_SDK_MATH_COMPLEX_H__ | |
| 23 | #define __LIBRETRO_SDK_MATH_COMPLEX_H__ | |
| 24 | ||
| 25 | #include <stdint.h> | |
| 26 | ||
| 27 | #include <retro_inline.h> | |
| 28 | ||
| 29 | typedef struct | |
| 30 | { | |
| 31 | float real; | |
| 32 | float imag; | |
| 33 | } fft_complex_t; | |
| 34 | ||
| 35 | static INLINE fft_complex_t fft_complex_mul(fft_complex_t a, | |
| 36 | fft_complex_t b) | |
| 37 | { | |
| 38 | fft_complex_t out; | |
| 39 | out.real = a.real * b.real - a.imag * b.imag; | |
| 40 | out.imag = a.imag * b.real + a.real * b.imag; | |
| 41 | ||
| 42 | return out; | |
| 43 | ||
| 44 | } | |
| 45 | ||
| 46 | static INLINE fft_complex_t fft_complex_add(fft_complex_t a, | |
| 47 | fft_complex_t b) | |
| 48 | { | |
| 49 | fft_complex_t out; | |
| 50 | out.real = a.real + b.real; | |
| 51 | out.imag = a.imag + b.imag; | |
| 52 | ||
| 53 | return out; | |
| 54 | ||
| 55 | } | |
| 56 | ||
| 57 | static INLINE fft_complex_t fft_complex_sub(fft_complex_t a, | |
| 58 | fft_complex_t b) | |
| 59 | { | |
| 60 | fft_complex_t out; | |
| 61 | out.real = a.real - b.real; | |
| 62 | out.imag = a.imag - b.imag; | |
| 63 | ||
| 64 | return out; | |
| 65 | ||
| 66 | } | |
| 67 | ||
| 68 | static INLINE fft_complex_t fft_complex_conj(fft_complex_t a) | |
| 69 | { | |
| 70 | fft_complex_t out; | |
| 71 | out.real = a.real; | |
| 72 | out.imag = -a.imag; | |
| 73 | ||
| 74 | return out; | |
| 75 | } | |
| 76 | ||
| 77 | #endif |