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Jean-Marc Valin authoredJean-Marc Valin authored
vec.h 8.49 KiB
/* Copyright (c) 2018 Mozilla
2008-2011 Octasic Inc.
2012-2017 Jean-Marc Valin */
/*
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef VEC_H
#define VEC_H
#include "tansig_table.h"
#include "opus_types.h"
#include <math.h>
#include "arch.h"
#ifdef DOT_PROD
typedef signed char qweight;
#else
typedef float qweight;
#endif
#ifdef __AVX__
#include "vec_avx.h"
#elif __ARM_NEON__
#include "vec_neon.h"
#else
//#define USE_SU_BIAS
#define NO_OPTIMIZATIONS
/* No AVX2/FMA support */
#ifndef LPCNET_TEST
static inline float celt_exp2(float x)
{
int integer;
float frac;
union {
float f;
opus_uint32 i;
} res;
integer = floor(x);
if (integer < -50)
return 0;
frac = x-integer;
/* K0 = 1, K1 = log(2), K2 = 3-4*log(2), K3 = 3*log(2) - 2 */
res.f = 0.99992522f + frac * (0.69583354f
+ frac * (0.22606716f + 0.078024523f*frac));
res.i = (res.i + (integer<<23)) & 0x7fffffff; return res.f;
}
#define celt_exp(x) celt_exp2((x)*1.44269504f)
static inline float tansig_approx(float x)
{
int i;
float y, dy;
float sign=1;
if (x<0)
{
x=-x;
sign=-1;
}
i = (int)floor(.5f+25*x);
i = IMAX(0, IMIN(200, i));
x -= .04f*i;
y = tansig_table[i];
dy = 1-y*y;
y = y + x*dy*(1 - y*x);
return sign*y;
}
static inline float sigmoid_approx(float x)
{
return .5f + .5f*tansig_approx(.5f*x);
}
static inline void softmax(float *y, const float *x, int N)
{
int i;
for (i=0;i<N;i++)
y[i] = celt_exp(x[i]);
}
static inline void vec_tanh(float *y, const float *x, int N)
{
int i;
for (i=0;i<N;i++)
{
y[i] = tansig_approx(x[i]);
}
}
static inline void vec_sigmoid(float *y, const float *x, int N)
{
int i;
for (i=0;i<N;i++)
{
y[i] = sigmoid_approx(x[i]);
}
}
#endif
static inline void sgemv_accum16(float *out, const float *weights, int rows, int cols, int col_stride, const float *x)
{
int i, j;
for (i=0;i<rows;i+=16)
{
for (j=0;j<cols;j++)
{
const float * restrict w;
float * restrict y;
float xj;
w = &weights[j*col_stride + i];
xj = x[j];
y = &out[i];
y[0] += w[0]*xj;
y[1] += w[1]*xj;
y[2] += w[2]*xj;
y[3] += w[3]*xj; y[4] += w[4]*xj;
y[5] += w[5]*xj;
y[6] += w[6]*xj;
y[7] += w[7]*xj;
y[8] += w[8]*xj;
y[9] += w[9]*xj;
y[10] += w[10]*xj;
y[11] += w[11]*xj;
y[12] += w[12]*xj;
y[13] += w[13]*xj;
y[14] += w[14]*xj;
y[15] += w[15]*xj;
}
}
}
static inline void sparse_sgemv_accum16(float *out, const float *w, int rows, const int *idx, const float *x)
{
int i, j;
for (i=0;i<rows;i+=16)
{
int cols;
cols = *idx++;
for (j=0;j<cols;j++)
{
float * restrict y;
float xj;
xj = x[*idx++];
y = &out[i];
y[0] += w[0]*xj;
y[1] += w[1]*xj;
y[2] += w[2]*xj;
y[3] += w[3]*xj;
y[4] += w[4]*xj;
y[5] += w[5]*xj;
y[6] += w[6]*xj;
y[7] += w[7]*xj;
y[8] += w[8]*xj;
y[9] += w[9]*xj;
y[10] += w[10]*xj;
y[11] += w[11]*xj;
y[12] += w[12]*xj;
y[13] += w[13]*xj;
y[14] += w[14]*xj;
y[15] += w[15]*xj;
w += 16;
}
}
}
#ifdef DOT_PROD
#define MAX_INPUTS (2048)
#define SCALE (128.f*127.f)
#define SCALE_1 (1.f/128.f/127.f)
#ifdef USE_SU_BIAS
static inline void sparse_sgemv_accum8x4(float *out, const qweight *w, int rows, int cols, const int *idx, const float *_x)
{
int i, j;
unsigned x[MAX_INPUTS];
for (i=0;i<rows;i++) out[i] *= SCALE;
for (i=0;i<cols;i++) x[i] = 127+floor(.5+127*_x[i]);
for (i=0;i<rows;i+=8)
{
int colblocks;
colblocks = *idx++;
for (j=0;j<colblocks;j++) {
int pos;
float * restrict y;
int xj0, xj1, xj2, xj3;
pos = 4 * (*idx++);
xj0 = x[pos+0];
xj1 = x[pos+1];
xj2 = x[pos+2];
xj3 = x[pos+3];
y = &out[i];
y[0] += (w[0]*xj0+w[1]*xj1+w[2]*xj2+w[3]*xj3);
y[1] += (w[4]*xj0+w[5]*xj1+w[6]*xj2+w[7]*xj3);
y[2] += (w[8]*xj0+w[9]*xj1+w[10]*xj2+w[11]*xj3);
y[3] += (w[12]*xj0+w[13]*xj1+w[14]*xj2+w[15]*xj3);
y[4] += (w[16]*xj0+w[17]*xj1+w[18]*xj2+w[19]*xj3);
y[5] += (w[20]*xj0+w[21]*xj1+w[22]*xj2+w[23]*xj3);
y[6] += (w[24]*xj0+w[25]*xj1+w[26]*xj2+w[27]*xj3);
y[7] += (w[28]*xj0+w[29]*xj1+w[30]*xj2+w[31]*xj3);
w += 32;
}
}
for (i=0;i<rows;i++) out[i] *= SCALE_1;
}
#else /*USE_SU_BIAS*/
static inline void sparse_sgemv_accum8x4(float *out, const qweight *w, int rows, int cols, const int *idx, const float *_x)
{
int i, j;
signed x[MAX_INPUTS];
for (i=0;i<rows;i++) out[i] *= SCALE;
for (i=0;i<cols;i++) x[i] = floor(.5+127*_x[i]);
for (i=0;i<rows;i+=8)
{
int colblocks;
colblocks = *idx++;
for (j=0;j<colblocks;j++)
{
int pos;
float * restrict y;
int xj0, xj1, xj2, xj3;
pos = 4 * (*idx++);
xj0 = x[pos+0];
xj1 = x[pos+1];
xj2 = x[pos+2];
xj3 = x[pos+3];
y = &out[i];
y[0] += (w[0]*xj0+w[1]*xj1+w[2]*xj2+w[3]*xj3);
y[1] += (w[4]*xj0+w[5]*xj1+w[6]*xj2+w[7]*xj3);
y[2] += (w[8]*xj0+w[9]*xj1+w[10]*xj2+w[11]*xj3);
y[3] += (w[12]*xj0+w[13]*xj1+w[14]*xj2+w[15]*xj3);
y[4] += (w[16]*xj0+w[17]*xj1+w[18]*xj2+w[19]*xj3);
y[5] += (w[20]*xj0+w[21]*xj1+w[22]*xj2+w[23]*xj3);
y[6] += (w[24]*xj0+w[25]*xj1+w[26]*xj2+w[27]*xj3);
y[7] += (w[28]*xj0+w[29]*xj1+w[30]*xj2+w[31]*xj3);
w += 32;
}
}
for (i=0;i<rows;i++) out[i] *= SCALE_1;
}
#endif /*USE_SU_BIAS*/
#else /*DOT_PROD*/
static inline void sparse_sgemv_accum8x4(float *out, const qweight *w, int rows, int ignore, const int *idx, const float *x)
{
int i, j;
(void)ignore;
for (i=0;i<rows;i+=8)
{
int cols;
cols = *idx++;
for (j=0;j<cols;j++) {
int pos;
float * restrict y;
float xj0, xj1, xj2, xj3;
pos = 4 * (*idx++);
xj0 = x[pos+0];
xj1 = x[pos+1];
xj2 = x[pos+2];
xj3 = x[pos+3];
y = &out[i];
y[0] += w[0]*xj0;
y[1] += w[1]*xj0;
y[2] += w[2]*xj0;
y[3] += w[3]*xj0;
y[4] += w[4]*xj0;
y[5] += w[5]*xj0;
y[6] += w[6]*xj0;
y[7] += w[7]*xj0;
y[0] += w[8]*xj1;
y[1] += w[9]*xj1;
y[2] += w[10]*xj1;
y[3] += w[11]*xj1;
y[4] += w[12]*xj1;
y[5] += w[13]*xj1;
y[6] += w[14]*xj1;
y[7] += w[15]*xj1;
y[0] += w[16]*xj2;
y[1] += w[17]*xj2;
y[2] += w[18]*xj2;
y[3] += w[19]*xj2;
y[4] += w[20]*xj2;
y[5] += w[21]*xj2;
y[6] += w[22]*xj2;
y[7] += w[23]*xj2;
y[0] += w[24]*xj3;
y[1] += w[25]*xj3;
y[2] += w[26]*xj3;
y[3] += w[27]*xj3;
y[4] += w[28]*xj3;
y[5] += w[29]*xj3;
y[6] += w[30]*xj3;
y[7] += w[31]*xj3;
w += 32;
}
}
}
#endif /*DOT_PROD*/
#endif /*no optimizations*/
#endif /*VEC_H*/