From 4a89a841a11cb872f9b0b0959c306fcb96f87d75 Mon Sep 17 00:00:00 2001 From: Damien Lespiau Date: Sat, 27 Jun 2015 09:45:42 +0100 Subject: stats: Add functions to retrieve min/max values of the dataset Signed-off-by: Damien Lespiau --- lib/igt_stats.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'lib/igt_stats.c') diff --git a/lib/igt_stats.c b/lib/igt_stats.c index bd055503..477d2043 100644 --- a/lib/igt_stats.c +++ b/lib/igt_stats.c @@ -28,6 +28,8 @@ #include "igt_core.h" #include "igt_stats.h" +#define U64_MAX ((uint64_t)~0ULL) + /** * SECTION:igt_stats * @short_description: Tools for statistical analysis @@ -78,6 +80,9 @@ void igt_stats_init(igt_stats_t *stats, unsigned int capacity) stats->values = calloc(capacity, sizeof(*stats->values)); igt_assert(stats->values); stats->capacity = capacity; + + stats->min = U64_MAX; + stats->max = 0; } /** @@ -151,7 +156,35 @@ void igt_stats_push(igt_stats_t *stats, uint64_t value) { igt_assert(stats->n_values < stats->capacity); stats->values[stats->n_values++] = value; + stats->mean_variance_valid = false; + + if (value < stats->min) + stats->min = value; + if (value > stats->max) + stats->max = value; +} + +/** + * igt_stats_get_min: + * @stats: An #igt_stats_t instance + * + * Retrieves the minimal value in @stats + */ +uint64_t igt_stats_get_min(igt_stats_t *stats) +{ + return stats->min; +} + +/** + * igt_stats_get_max: + * @stats: An #igt_stats_t instance + * + * Retrieves the maximum value in @stats + */ +uint64_t igt_stats_get_max(igt_stats_t *stats) +{ + return stats->max; } /* -- cgit v1.2.3