diff options
author | Diego Biurrun <diego@biurrun.de> | 2016-03-17 19:13:17 +0100 |
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committer | Diego Biurrun <diego@biurrun.de> | 2016-04-07 16:14:42 +0200 |
commit | d12b5b2f135aade4099f4b26b0fe678656158c13 (patch) | |
tree | d5b44fd428a1c68213fe51aca21b5819bce3d33a /libavutil/lls-test.c | |
parent | 330177b508420a553083df94f22cbd5142de0f4a (diff) |
build: Split test programs off into separate files
This avoids spurious library rebuilds when only the test program
code is changed and simplifies the build system.
Diffstat (limited to 'libavutil/lls-test.c')
-rw-r--r-- | libavutil/lls-test.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/libavutil/lls-test.c b/libavutil/lls-test.c new file mode 100644 index 0000000000..f9814b3863 --- /dev/null +++ b/libavutil/lls-test.c @@ -0,0 +1,54 @@ +/* + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <limits.h> +#include <stdio.h> + +#include "internal.h" +#include "lfg.h" +#include "lls.h" + +int main(void) +{ + LLSModel m; + int i, order; + AVLFG lfg; + + av_lfg_init(&lfg, 1); + avpriv_init_lls(&m, 3); + + for (i = 0; i < 100; i++) { + LOCAL_ALIGNED(32, double, var, [4]); + double eval; + + var[0] = (av_lfg_get(&lfg) / (double) UINT_MAX - 0.5) * 2; + var[1] = var[0] + av_lfg_get(&lfg) / (double) UINT_MAX - 0.5; + var[2] = var[1] + av_lfg_get(&lfg) / (double) UINT_MAX - 0.5; + var[3] = var[2] + av_lfg_get(&lfg) / (double) UINT_MAX - 0.5; + m.update_lls(&m, var); + avpriv_solve_lls(&m, 0.001, 0); + for (order = 0; order < 3; order++) { + eval = m.evaluate_lls(&m, var + 1, order); + printf("real:%9f order:%d pred:%9f var:%f coeffs:%f %9f %9f\n", + var[0], order, eval, sqrt(m.variance[order] / (i + 1)), + m.coeff[order][0], m.coeff[order][1], + m.coeff[order][2]); + } + } + return 0; +} |