From 06f5f7065fccc5fbb9f65f6f7d348624e2fa0d2b Mon Sep 17 00:00:00 2001 From: Damien Lespiau Date: Thu, 25 Jun 2015 12:07:56 +0100 Subject: lib: Add a tiny utility function to compute averages The master plan would be to get a bit more stats in it, at least the standard deviation and confidence interval. Just need the average for now. Signed-off-by: Damien Lespiau --- lib/tests/igt_stats.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 lib/tests/igt_stats.c (limited to 'lib/tests/igt_stats.c') diff --git a/lib/tests/igt_stats.c b/lib/tests/igt_stats.c new file mode 100644 index 00000000..e75a203e --- /dev/null +++ b/lib/tests/igt_stats.c @@ -0,0 +1,49 @@ +/* + * Copyright © 2015 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + */ + +#include "igt_core.h" +#include "igt_stats.h" + +static void test_average(void) +{ + igt_stats_t stats; + double average; + + igt_stats_init(&stats, 5); + + igt_stats_push(&stats, 2); + igt_stats_push(&stats, 4); + igt_stats_push(&stats, 6); + igt_stats_push(&stats, 8); + igt_stats_push(&stats, 10); + + average = igt_stats_get_average(&stats); + + igt_assert(average == (2 + 4 + 6 + 8 + 10) / 5.); +} + +igt_simple_main +{ + test_average(); +} -- cgit v1.2.3