67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
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/**********************************************************************
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* Copyright (c) 2014 Pieter Wuille *
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* Distributed under the MIT software license, see the accompanying *
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* file COPYING or http://www.opensource.org/licenses/mit-license.php.*
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**********************************************************************/
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#ifndef _SECP256K1_BENCH_H_
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#define _SECP256K1_BENCH_H_
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#include <stdio.h>
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#include <math.h>
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#include "sys/time.h"
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static double gettimedouble(void) {
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return tv.tv_usec * 0.000001 + tv.tv_sec;
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}
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void print_number(double x) {
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double y = x;
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int c = 0;
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if (y < 0.0) {
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y = -y;
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}
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while (y < 100.0) {
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y *= 10.0;
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c++;
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}
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printf("%.*f", c, x);
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}
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void run_benchmark(char *name, void (*benchmark)(void*), void (*setup)(void*), void (*teardown)(void*), void* data, int count, int iter) {
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int i;
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double min = HUGE_VAL;
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double sum = 0.0;
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double max = 0.0;
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for (i = 0; i < count; i++) {
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double begin, total;
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if (setup != NULL) {
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setup(data);
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}
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begin = gettimedouble();
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benchmark(data);
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total = gettimedouble() - begin;
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if (teardown != NULL) {
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teardown(data);
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}
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if (total < min) {
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min = total;
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}
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if (total > max) {
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max = total;
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}
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sum += total;
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}
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printf("%s: min ", name);
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print_number(min * 1000000.0 / iter);
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printf("us / avg ");
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print_number((sum / count) * 1000000.0 / iter);
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printf("us / max ");
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print_number(max * 1000000.0 / iter);
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printf("us\n");
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}
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#endif
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