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FFmpeg/tests/checkasm/float_dsp.c
Martin Storsjö 8f70e261fa checkasm: float_dsp: Scale FLT/DBL_EPSILON sufficiently when comparing 
As the values generated by av_bmg_get can be arbitrarily large
(only the stddev is specified), we can't use a fixed tolerance.

This matches what was done for test_vector_dmul_scalar in
38f966b2222db.

This fixes the float_dsp checkasm test for some seeds, when built
with clang for mingw/x86_32.

Signed-off-by: Martin Storsjö <martin@martin.st>
2019-12-11 22:19:45 +02:00

339 lines
12 KiB
C
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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <float.h>
#include <stdint.h>
#include "libavutil/float_dsp.h"
#include "libavutil/internal.h"
#include "checkasm.h"
#define LEN 256
#define randomize_buffer(buf) \
do { \
int i; \
double bmg[2], stddev = 10.0, mean = 0.0; \
\
for (i = 0; i < LEN; i += 2) { \
av_bmg_get(&checkasm_lfg, bmg); \
buf[i] = bmg[0] * stddev + mean; \
buf[i + 1] = bmg[1] * stddev + mean; \
} \
} while(0);
static void test_vector_fmul(const float *src0, const float *src1)
{
LOCAL_ALIGNED_32(float, cdst, [LEN]);
LOCAL_ALIGNED_32(float, odst, [LEN]);
int i;
declare_func(void, float *dst, const float *src0, const float *src1,
int len);
call_ref(cdst, src0, src1, LEN);
call_new(odst, src0, src1, LEN);
for (i = 0; i < LEN; i++) {
double t = fabs(src0[i]) + fabs(src1[i]) + fabs(src0[i] * src1[i]) + 1.0;
if (!float_near_abs_eps(cdst[i], odst[i], t * 2 * FLT_EPSILON)) {
fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
i, cdst[i], odst[i], cdst[i] - odst[i]);
fail();
break;
}
}
bench_new(odst, src0, src1, LEN);
}
static void test_vector_dmul(const double *src0, const double *src1)
{
LOCAL_ALIGNED_32(double, cdst, [LEN]);
LOCAL_ALIGNED_32(double, odst, [LEN]);
int i;
declare_func(void, double *dst, const double *src0, const double *src1,
int len);
call_ref(cdst, src0, src1, LEN);
call_new(odst, src0, src1, LEN);
for (i = 0; i < LEN; i++) {
double t = fabs(src0[i]) + fabs(src1[i]) + fabs(src0[i] * src1[i]) + 1.0;
if (!double_near_abs_eps(cdst[i], odst[i], t * 2 * DBL_EPSILON)) {
fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
i, cdst[i], odst[i], cdst[i] - odst[i]);
fail();
break;
}
}
bench_new(odst, src0, src1, LEN);
}
#define ARBITRARY_FMUL_ADD_CONST 0.005
static void test_vector_fmul_add(const float *src0, const float *src1, const float *src2)
{
LOCAL_ALIGNED_32(float, cdst, [LEN]);
LOCAL_ALIGNED_32(float, odst, [LEN]);
int i;
declare_func(void, float *dst, const float *src0, const float *src1,
const float *src2, int len);
call_ref(cdst, src0, src1, src2, LEN);
call_new(odst, src0, src1, src2, LEN);
for (i = 0; i < LEN; i++) {
if (!float_near_abs_eps(cdst[i], odst[i], ARBITRARY_FMUL_ADD_CONST)) {
fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
i, cdst[i], odst[i], cdst[i] - odst[i]);
fail();
break;
}
}
bench_new(odst, src0, src1, src2, LEN);
}
static void test_vector_fmul_scalar(const float *src0, const float *src1)
{
LOCAL_ALIGNED_16(float, cdst, [LEN]);
LOCAL_ALIGNED_16(float, odst, [LEN]);
int i;
declare_func(void, float *dst, const float *src, float mul, int len);
call_ref(cdst, src0, src1[0], LEN);
call_new(odst, src0, src1[0], LEN);
for (i = 0; i < LEN; i++) {
double t = fabs(src0[i]) + fabs(src1[0]) + fabs(src0[i] * src1[0]) + 1.0;
if (!float_near_abs_eps(cdst[i], odst[i], t * 2 * FLT_EPSILON)) {
fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
i, cdst[i], odst[i], cdst[i] - odst[i]);
fail();
break;
}
}
bench_new(odst, src0, src1[0], LEN);
}
#define ARBITRARY_FMUL_WINDOW_CONST 0.008
static void test_vector_fmul_window(const float *src0, const float *src1, const float *win)
{
LOCAL_ALIGNED_16(float, cdst, [LEN]);
LOCAL_ALIGNED_16(float, odst, [LEN]);
int i;
declare_func(void, float *dst, const float *src0, const float *src1,
const float *win, int len);
call_ref(cdst, src0, src1, win, LEN / 2);
call_new(odst, src0, src1, win, LEN / 2);
for (i = 0; i < LEN; i++) {
if (!float_near_abs_eps(cdst[i], odst[i], ARBITRARY_FMUL_WINDOW_CONST)) {
fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
i, cdst[i], odst[i], cdst[i] - odst[i]);
fail();
break;
}
}
bench_new(odst, src0, src1, win, LEN / 2);
}
#define ARBITRARY_FMAC_SCALAR_CONST 0.005
static void test_vector_fmac_scalar(const float *src0, const float *src1, const float *src2)
{
LOCAL_ALIGNED_32(float, cdst, [LEN]);
LOCAL_ALIGNED_32(float, odst, [LEN]);
int i;
declare_func(void, float *dst, const float *src, float mul, int len);
memcpy(cdst, src2, LEN * sizeof(*src2));
memcpy(odst, src2, LEN * sizeof(*src2));
call_ref(cdst, src0, src1[0], LEN);
call_new(odst, src0, src1[0], LEN);
for (i = 0; i < LEN; i++) {
if (!float_near_abs_eps(cdst[i], odst[i], ARBITRARY_FMAC_SCALAR_CONST)) {
fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
i, cdst[i], odst[i], cdst[i] - odst[i]);
fail();
break;
}
}
memcpy(odst, src2, LEN * sizeof(*src2));
bench_new(odst, src0, src1[0], LEN);
}
static void test_vector_dmul_scalar(const double *src0, const double *src1)
{
LOCAL_ALIGNED_32(double, cdst, [LEN]);
LOCAL_ALIGNED_32(double, odst, [LEN]);
int i;
declare_func(void, double *dst, const double *src, double mul, int len);
call_ref(cdst, src0, src1[0], LEN);
call_new(odst, src0, src1[0], LEN);
for (i = 0; i < LEN; i++) {
double t = fabs(src1[0]) + fabs(src0[i]) + fabs(src1[0] * src0[i]) + 1.0;
if (!double_near_abs_eps(cdst[i], odst[i], t * 2 * DBL_EPSILON)) {
fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n", i,
cdst[i], odst[i], cdst[i] - odst[i]);
fail();
break;
}
}
bench_new(odst, src0, src1[0], LEN);
}
#define ARBITRARY_DMAC_SCALAR_CONST 0.005
static void test_vector_dmac_scalar(const double *src0, const double *src1, const double *src2)
{
LOCAL_ALIGNED_32(double, cdst, [LEN]);
LOCAL_ALIGNED_32(double, odst, [LEN]);
int i;
declare_func(void, double *dst, const double *src, double mul, int len);
memcpy(cdst, src2, LEN * sizeof(*src2));
memcpy(odst, src2, LEN * sizeof(*src2));
call_ref(cdst, src0, src1[0], LEN);
call_new(odst, src0, src1[0], LEN);
for (i = 0; i < LEN; i++) {
if (!double_near_abs_eps(cdst[i], odst[i], ARBITRARY_DMAC_SCALAR_CONST)) {
fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
i, cdst[i], odst[i], cdst[i] - odst[i]);
fail();
break;
}
}
memcpy(odst, src2, LEN * sizeof(*src2));
bench_new(odst, src0, src1[0], LEN);
}
static void test_butterflies_float(const float *src0, const float *src1)
{
LOCAL_ALIGNED_16(float, cdst, [LEN]);
LOCAL_ALIGNED_16(float, odst, [LEN]);
LOCAL_ALIGNED_16(float, cdst1, [LEN]);
LOCAL_ALIGNED_16(float, odst1, [LEN]);
int i;
declare_func(void, float *av_restrict src0, float *av_restrict src1,
int len);
memcpy(cdst, src0, LEN * sizeof(*src0));
memcpy(cdst1, src1, LEN * sizeof(*src1));
memcpy(odst, src0, LEN * sizeof(*src0));
memcpy(odst1, src1, LEN * sizeof(*src1));
call_ref(cdst, cdst1, LEN);
call_new(odst, odst1, LEN);
for (i = 0; i < LEN; i++) {
if (!float_near_abs_eps(cdst[i], odst[i], FLT_EPSILON) ||
!float_near_abs_eps(cdst1[i], odst1[i], FLT_EPSILON)) {
fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
i, cdst[i], odst[i], cdst[i] - odst[i]);
fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
i, cdst1[i], odst1[i], cdst1[i] - odst1[i]);
fail();
break;
}
}
memcpy(odst, src0, LEN * sizeof(*src0));
memcpy(odst1, src1, LEN * sizeof(*src1));
bench_new(odst, odst1, LEN);
}
#define ARBITRARY_SCALARPRODUCT_CONST 0.2
static void test_scalarproduct_float(const float *src0, const float *src1)
{
float cprod, oprod;
declare_func_float(float, const float *src0, const float *src1, int len);
cprod = call_ref(src0, src1, LEN);
oprod = call_new(src0, src1, LEN);
if (!float_near_abs_eps(cprod, oprod, ARBITRARY_SCALARPRODUCT_CONST)) {
fprintf(stderr, "%- .12f - %- .12f = % .12g\n",
cprod, oprod, cprod - oprod);
fail();
}
bench_new(src0, src1, LEN);
}
void checkasm_check_float_dsp(void)
{
LOCAL_ALIGNED_32(float, src0, [LEN]);
LOCAL_ALIGNED_32(float, src1, [LEN]);
LOCAL_ALIGNED_32(float, src2, [LEN]);
LOCAL_ALIGNED_16(float, src3, [LEN]);
LOCAL_ALIGNED_16(float, src4, [LEN]);
LOCAL_ALIGNED_16(float, src5, [LEN]);
LOCAL_ALIGNED_32(double, dbl_src0, [LEN]);
LOCAL_ALIGNED_32(double, dbl_src1, [LEN]);
LOCAL_ALIGNED_32(double, dbl_src2, [LEN]);
AVFloatDSPContext *fdsp = avpriv_float_dsp_alloc(1);
if (!fdsp) {
fprintf(stderr, "floatdsp: Out of memory error\n");
return;
}
randomize_buffer(src0);
randomize_buffer(src1);
randomize_buffer(src2);
randomize_buffer(src3);
randomize_buffer(src4);
randomize_buffer(src5);
randomize_buffer(dbl_src0);
randomize_buffer(dbl_src1);
randomize_buffer(dbl_src2);
if (check_func(fdsp->vector_fmul, "vector_fmul"))
test_vector_fmul(src0, src1);
if (check_func(fdsp->vector_fmul_add, "vector_fmul_add"))
test_vector_fmul_add(src0, src1, src2);
if (check_func(fdsp->vector_fmul_scalar, "vector_fmul_scalar"))
test_vector_fmul_scalar(src3, src4);
if (check_func(fdsp->vector_fmul_reverse, "vector_fmul_reverse"))
test_vector_fmul(src0, src1);
if (check_func(fdsp->vector_fmul_window, "vector_fmul_window"))
test_vector_fmul_window(src3, src4, src5);
report("vector_fmul");
if (check_func(fdsp->vector_fmac_scalar, "vector_fmac_scalar"))
test_vector_fmac_scalar(src0, src1, src2);
report("vector_fmac");
if (check_func(fdsp->vector_dmul, "vector_dmul"))
test_vector_dmul(dbl_src0, dbl_src1);
if (check_func(fdsp->vector_dmul_scalar, "vector_dmul_scalar"))
test_vector_dmul_scalar(dbl_src0, dbl_src1);
report("vector_dmul");
if (check_func(fdsp->vector_dmac_scalar, "vector_dmac_scalar"))
test_vector_dmac_scalar(dbl_src0, dbl_src1, dbl_src2);
report("vector_dmac");
if (check_func(fdsp->butterflies_float, "butterflies_float"))
test_butterflies_float(src3, src4);
report("butterflies_float");
if (check_func(fdsp->scalarproduct_float, "scalarproduct_float"))
test_scalarproduct_float(src3, src4);
report("scalarproduct_float");
av_freep(&fdsp);
}
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