27 lines
550 B
C
27 lines
550 B
C
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#include "util.h"
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#include <math.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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static double start_time[8];
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void timer_init() { srand(time(NULL)); }
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static double get_time() {
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struct timespec tv;
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clock_gettime(CLOCK_MONOTONIC, &tv);
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return tv.tv_sec + tv.tv_nsec * 1e-9;
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}
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void timer_start(int i) { start_time[i] = get_time(); }
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double timer_stop(int i) { return get_time() - start_time[i]; }
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// Assume f is a black-box operation
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double f(double x) { return 4.0 / (1.0 + x * x); }
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