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Move math/complex.h to libretro-common

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This commit is contained in:
twinaphex 2016-06-15 21:35:48 +02:00
parent 58dae07212
commit 962c52c5ae
2 changed files with 81 additions and 52 deletions
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53
audio/audio_filters/fft/fft.h
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@ -17,61 +17,10 @@
#define RARCH_FFT_H__
#include <retro_inline.h>
#include <math/complex.h>
typedef struct fft fft_t;
// C99 <complex.h> would be nice.
typedef struct
{
float real;
float imag;
} fft_complex_t;
static INLINE fft_complex_t fft_complex_mul(fft_complex_t a,
fft_complex_t b)
{
fft_complex_t out = {
a.real * b.real - a.imag * b.imag,
a.imag * b.real + a.real * b.imag,
};
return out;
}
static INLINE fft_complex_t fft_complex_add(fft_complex_t a,
fft_complex_t b)
{
fft_complex_t out = {
a.real + b.real,
a.imag + b.imag,
};
return out;
}
static INLINE fft_complex_t fft_complex_sub(fft_complex_t a,
fft_complex_t b)
{
fft_complex_t out = {
a.real - b.real,
a.imag - b.imag,
};
return out;
}
static INLINE fft_complex_t fft_complex_conj(fft_complex_t a)
{
fft_complex_t out = {
a.real, -a.imag,
};
return out;
}
fft_t *fft_new(unsigned block_size_log2);
void fft_free(fft_t *fft);

80
libretro-common/include/math/complex.h Normal file
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@ -0,0 +1,80 @@
/* Copyright (C) 2010-2016 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (fxp.h).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __LIBRETRO_SDK_MATH_COMPLEX_H__
#define __LIBRETRO_SDK_MATH_COMPLEX_H__
#include <stdint.h>
#include <retro_inline.h>
typedef struct
{
float real;
float imag;
} fft_complex_t;
static INLINE fft_complex_t fft_complex_mul(fft_complex_t a,
fft_complex_t b)
{
fft_complex_t out = {
a.real * b.real - a.imag * b.imag,
a.imag * b.real + a.real * b.imag,
};
return out;
}
static INLINE fft_complex_t fft_complex_add(fft_complex_t a,
fft_complex_t b)
{
fft_complex_t out = {
a.real + b.real,
a.imag + b.imag,
};
return out;
}
static INLINE fft_complex_t fft_complex_sub(fft_complex_t a,
fft_complex_t b)
{
fft_complex_t out = {
a.real - b.real,
a.imag - b.imag,
};
return out;
}
static INLINE fft_complex_t fft_complex_conj(fft_complex_t a)
{
fft_complex_t out = {
a.real, -a.imag,
};
return out;
}
#endif