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104 lines
3.4 KiB
104 lines
3.4 KiB
/*
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* Copyright © 2015 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#ifndef __IGT_STATS_H__
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#define __IGT_STATS_H__
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#include <stdint.h>
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#include <stdbool.h>
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#include <math.h>
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/**
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* igt_stats_t:
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* @values_u64: An array containing pushed integer values
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* @is_float: Whether @values_f or @values_u64 is valid
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* @values_f: An array containing pushed float values
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* @n_values: The number of pushed values
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*/
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typedef struct {
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unsigned int n_values;
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unsigned int is_float : 1;
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union {
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uint64_t *values_u64;
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double *values_f;
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};
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/*< private >*/
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unsigned int capacity;
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unsigned int is_population : 1;
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unsigned int mean_variance_valid : 1;
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unsigned int sorted_array_valid : 1;
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uint64_t min, max;
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double range[2];
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double mean, variance;
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union {
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uint64_t *sorted_u64;
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double *sorted_f;
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};
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} igt_stats_t;
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void igt_stats_init(igt_stats_t *stats);
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void igt_stats_init_with_size(igt_stats_t *stats, unsigned int capacity);
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void igt_stats_fini(igt_stats_t *stats);
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bool igt_stats_is_population(igt_stats_t *stats);
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void igt_stats_set_population(igt_stats_t *stats, bool full_population);
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void igt_stats_push(igt_stats_t *stats, uint64_t value);
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void igt_stats_push_float(igt_stats_t *stats, double value);
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void igt_stats_push_array(igt_stats_t *stats,
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const uint64_t *values, unsigned int n_values);
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uint64_t igt_stats_get_min(igt_stats_t *stats);
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uint64_t igt_stats_get_max(igt_stats_t *stats);
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uint64_t igt_stats_get_range(igt_stats_t *stats);
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void igt_stats_get_quartiles(igt_stats_t *stats,
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double *q1, double *q2, double *q3);
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double igt_stats_get_iqr(igt_stats_t *stats);
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double igt_stats_get_iqm(igt_stats_t *stats);
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double igt_stats_get_mean(igt_stats_t *stats);
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double igt_stats_get_trimean(igt_stats_t *stats);
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double igt_stats_get_median(igt_stats_t *stats);
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double igt_stats_get_variance(igt_stats_t *stats);
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double igt_stats_get_std_deviation(igt_stats_t *stats);
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/**
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* igt_mean:
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*
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* Structure to compute running statistical numbers. Needs to be initialized
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* with igt_mean_init(). Read out data using igt_mean_get() and
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* igt_mean_get_variance().
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*/
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struct igt_mean {
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/*< private >*/
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double mean, sq, min, max;
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unsigned long count;
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};
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void igt_mean_init(struct igt_mean *m);
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void igt_mean_add(struct igt_mean *m, double v);
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double igt_mean_get(struct igt_mean *m);
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double igt_mean_get_variance(struct igt_mean *m);
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#endif /* __IGT_STATS_H__ */
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