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stats: Be more precise and talk about mean, not average

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There are several types of averages eg. mean, median and mode.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
This commit is contained in:
Damien Lespiau 2015-06-25 23:44:20 +01:00
parent e86557ca9f
commit e55a11d3eb
4 changed files with 9 additions and 8 deletions
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2
lib/igt_stats.c
View File

@ -44,7 +44,7 @@ void igt_stats_push(igt_stats_t *stats, uint64_t value)
stats->values[stats->n_values++] = value;
}
double igt_stats_get_average(igt_stats_t *stats)
double igt_stats_get_mean(igt_stats_t *stats)
{
unsigned int i;
double a = 0.0;

2
lib/igt_stats.h
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@ -33,4 +33,4 @@ typedef struct {
void igt_stats_init(igt_stats_t *stats, unsigned int capacity);
void igt_stats_fini(igt_stats_t *stats);
void igt_stats_push(igt_stats_t *stats, uint64_t value);
double igt_stats_get_average(igt_stats_t *stats);
double igt_stats_get_mean(igt_stats_t *stats);

10
lib/tests/igt_stats.c
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@ -25,10 +25,10 @@
#include "igt_core.h"
#include "igt_stats.h"
static void test_average(void)
static void test_mean(void)
{
igt_stats_t stats;
double average;
double mean;
igt_stats_init(&stats, 5);
@ -38,12 +38,12 @@ static void test_average(void)
igt_stats_push(&stats, 8);
igt_stats_push(&stats, 10);
average = igt_stats_get_average(&stats);
mean = igt_stats_get_mean(&stats);
igt_assert(average == (2 + 4 + 6 + 8 + 10) / 5.);
igt_assert(mean == (2 + 4 + 6 + 8 + 10) / 5.);
}
igt_simple_main
{
test_average();
test_mean();
}

3
tools/skl_compute_wrpll.c
View File

@ -917,7 +917,8 @@ static void test_run(struct test_ops *test)
}
printf("even/odd dividers: %d/%d\n", p_odd_even[0], p_odd_even[1]);
printf("average deviation: %.2lf\n", igt_stats_get_average(&stats));
printf("mean central freq deviation: %.2lf\n",
igt_stats_get_mean(&stats));
igt_stats_fini(&stats);
}