ccan/ccan/time/_info

#include <string.h>
#include "config.h"

/**
 * time - routines for dealing with time
 *
 * This code provides convenient functions for working with time, in the
 * form of 'struct timespec'.
 *
 * Author: Rusty Russell <rusty@rustcorp.com.au>
 * License: BSD-MIT
 *
 * Example:
 *	#include <ccan/time/time.h>
 *	#include <stdlib.h>
 *	#include <stdio.h>
 *	#include <err.h>
 *
 *	int main(int argc, char *argv[])
 *	{
 *		struct timespec t;
 *
 *		if (argc != 2)
 *			errx(1, "Usage: %s <diff in millisec>", argv[0]);
 *
 *		t = time_now();
 *		if (argv[1][0] == '-')
 *			t = time_sub(t, time_from_msec(atol(argv[1]+1)));
 *		else
 *			t = time_add(t, time_from_msec(atol(argv[1])));
 *
 *		printf("%lu.%09u\n",
 *		       (unsigned long)t.tv_sec, (unsigned)t.tv_nsec);
 *		return 0;
 *	}
 */
int main(int argc, char *argv[])
{
	/* Expect exactly one argument */
	if (argc != 2)
		return 1;

	if (strcmp(argv[1], "depends") == 0) {
		return 0;
	}

#if HAVE_CLOCK_GETTIME_IN_LIBRT
	if (strcmp(argv[1], "libs") == 0) {
		printf("rt\n");
		return 0;
	}
#endif

	return 1;
}