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78 lines
2.3 KiB
C
78 lines
2.3 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 (complex.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_COMPLEX_H__
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#define __LIBRETRO_SDK_MATH_COMPLEX_H__
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#include <stdint.h>
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#include <retro_inline.h>
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typedef struct
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{
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float real;
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float imag;
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} fft_complex_t;
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static INLINE fft_complex_t fft_complex_mul(fft_complex_t a,
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fft_complex_t b)
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{
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fft_complex_t out;
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out.real = a.real * b.real - a.imag * b.imag;
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out.imag = a.imag * b.real + a.real * b.imag;
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return out;
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}
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static INLINE fft_complex_t fft_complex_add(fft_complex_t a,
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fft_complex_t b)
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{
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fft_complex_t out;
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out.real = a.real + b.real;
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out.imag = a.imag + b.imag;
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return out;
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}
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static INLINE fft_complex_t fft_complex_sub(fft_complex_t a,
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fft_complex_t b)
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{
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fft_complex_t out;
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out.real = a.real - b.real;
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out.imag = a.imag - b.imag;
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return out;
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}
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static INLINE fft_complex_t fft_complex_conj(fft_complex_t a)
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{
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fft_complex_t out;
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out.real = a.real;
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out.imag = -a.imag;
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return out;
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}
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#endif
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