diff options
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/lfg.c | |
parent | 257f00ec1ab06a2a161f535036c6512f3fc8e801 (diff) |
tests: Move all test programs to a subdirectory
Diffstat (limited to 'libavutil/tests/lfg.c')
-rw-r--r-- | libavutil/tests/lfg.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/libavutil/tests/lfg.c b/libavutil/tests/lfg.c new file mode 100644 index 0000000000..9a0c47c4de --- /dev/null +++ b/libavutil/tests/lfg.c @@ -0,0 +1,56 @@ +/* + * 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 "libavutil/log.h" +#include "libavutil/timer.h" +#include "libavutil/lfg.h" + +int main(void) +{ + int x = 0; + int i, j; + AVLFG state; + + av_lfg_init(&state, 0xdeadbeef); + for (j = 0; j < 10000; j++) { + START_TIMER + for (i = 0; i < 624; i++) + x += av_lfg_get(&state); + STOP_TIMER("624 calls of av_lfg_get"); + } + av_log(NULL, AV_LOG_ERROR, "final value:%X\n", x); + + /* BMG usage example */ + { + double mean = 1000; + double stddev = 53; + + av_lfg_init(&state, 42); + + for (i = 0; i < 1000; i += 2) { + double bmg_out[2]; + av_bmg_get(&state, bmg_out); + av_log(NULL, AV_LOG_INFO, + "%f\n%f\n", + bmg_out[0] * stddev + mean, + bmg_out[1] * stddev + mean); + } + } + + return 0; +} |