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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 <float.h>
#include "libavutil/lls.h"
#include "checkasm.h"
#define randomize_buffer(buf) \
do { \
double bmg[2], stddev = 10.0; \
\
for (size_t i = 0; i < MAX_VARS_ALIGN; i += 2) { \
av_bmg_get(&checkasm_lfg, bmg); \
buf[i] = bmg[0] * stddev; \
buf[i + 1] = bmg[1] * stddev; \
} \
} while(0);
static void test_update(LLSModel *lls, const double *var)
{
double refcovar[MAX_VARS][MAX_VARS];
declare_func(void, LLSModel *, const double *);
call_ref(lls, var);
for (size_t i = 0; i < MAX_VARS; i++)
for (size_t j = 0; j < MAX_VARS; j++)
refcovar[i][j] = lls->covariance[i][j];
memset(lls->covariance, 0, sizeof (lls->covariance));
call_new(lls, var);
for (size_t i = 0; i < lls->indep_count; i++)
for (size_t j = i; j < lls->indep_count; j++) {
double eps = FFMAX(2 * DBL_EPSILON * fabs(refcovar[i][j]),
8 * DBL_EPSILON);
if (!double_near_abs_eps(refcovar[i][j], lls->covariance[i][j],
eps)) {
fprintf(stderr, "%zu, %zu: %- .12f - %- .12f = % .12g\n", i, j,
refcovar[i][j], lls->covariance[i][j],
refcovar[i][j] - lls->covariance[i][j]);
fail();
}
}
bench_new(lls, var);
}
static void test_evaluate(LLSModel *lls, const double *param, int order)
{
double refprod, newprod, eps;
declare_func_float(double, LLSModel *, const double *, int);
refprod = call_ref(lls, param, order);
newprod = call_new(lls, param, order);
eps = FFMAX(2 * DBL_EPSILON * fabs(refprod), 0.2);
if (!double_near_abs_eps(refprod, newprod, eps)) {
fprintf(stderr, "%- .12f - %- .12f = % .12g\n",
refprod, newprod, refprod - newprod);
fail();
}
if (order == lls->indep_count)
bench_new(lls, param, order);
}
void checkasm_check_lls(void)
{
static const unsigned char counts[] = { 8, 12, MAX_VARS, };
for (size_t i = 0; i < FF_ARRAY_ELEMS(counts); i++) {
LOCAL_ALIGNED_32(double, var, [MAX_VARS_ALIGN]);
LOCAL_ALIGNED_32(double, param, [FFALIGN(MAX_VARS+2,4)]);
LLSModel lls;
avpriv_init_lls(&lls, counts[i]);
randomize_buffer(var);
randomize_buffer(param);
if (check_func(lls.update_lls, "update_lls_%d", counts[i]))
test_update(&lls, var);
for (size_t j = 0; j <= i; j++)
if (check_func(lls.evaluate_lls, "evaluate_lls_%d_%d", counts[i],
counts[j]))
test_evaluate(&lls, param + 1, counts[j]);
}
report("lls");
}
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