text-format / benchmarks / wprintf.c

#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <wchar.h>

double gettime(void)
    struct timeval tv;

    gettimeofday(&tv, NULL);

    return tv.tv_sec + (tv.tv_usec / 1e6);

void loop(int count)
    int i;

    for (i = 0; i < count; i++)
	wprintf(L"hi mom %g\n", (double) i * M_PI);

int main(int argc, char **argv)
    double start, elapsed;
    int i, count;

    count = argc == 2 ? atoi(argv[1]) : 1600000;

    start = gettime();

    elapsed = gettime() - start;

    fprintf(stderr, "%d iterations in %g secs (%g thousand/sec)\n",
	    count, elapsed, count / elapsed / 1e3);
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