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author | Diego Biurrun <diego@biurrun.de> | 2016-04-20 11:40:40 +0200 |
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committer | Diego Biurrun <diego@biurrun.de> | 2016-05-13 14:55:56 +0200 |
commit | a6a750c7ef240b72ce01e9653343a0ddf247d196 (patch) | |
tree | 5c472bb92b5264f19b9270b0caf8a8565b071cef /libavutil/tests/lls.c | |
parent | 257f00ec1ab06a2a161f535036c6512f3fc8e801 (diff) | |
download | ffmpeg-streaming-a6a750c7ef240b72ce01e9653343a0ddf247d196.zip ffmpeg-streaming-a6a750c7ef240b72ce01e9653343a0ddf247d196.tar.gz |
tests: Move all test programs to a subdirectory
Diffstat (limited to 'libavutil/tests/lls.c')
-rw-r--r-- | libavutil/tests/lls.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/libavutil/tests/lls.c b/libavutil/tests/lls.c new file mode 100644 index 0000000..7866b38 --- /dev/null +++ b/libavutil/tests/lls.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 "libavutil/internal.h" +#include "libavutil/lfg.h" +#include "libavutil/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; +} |