testcases/open_posix_testsuite/conformance/interfaces/clock_getres/1-1.c

/*
 * Copyright (c) 2002, Intel Corporation. All rights reserved.
 * Created by:  julie.n.fleischer REMOVE-THIS AT intel DOT com
 * This file is licensed under the GPL license.  For the full content
 * of this license, see the COPYING file at the top level of this
 * source tree.

 * Test that clock_getres() returns the resolution of clock_id in res.
 *
 * The clock chosen for this test is CLOCK_REALTIME.
 */
#include <stdio.h>
#include <time.h>
#include "posixtest.h"

#define LARGENUM 100000
int main(int argc, char *argv[])
{
	struct timespec res;

	/* Initialize res to a number much larger than the resolution
	 * could possibly be
	 */
	res.tv_sec = LARGENUM;
	res.tv_nsec = LARGENUM;
	if (clock_getres(CLOCK_REALTIME, &res) == 0) {
		if (res.tv_sec != LARGENUM) { //assume initialized
#ifdef DEBUG
			printf("Resolution is %d sec %d nsec\n",
					(int) res.tv_sec,
					(int) res.tv_nsec);
#endif
			printf("Test PASSED\n");
			return PTS_PASS;
		} else {
			printf("clock_getres() success, but res not filled\n");
		}
	} else {
		printf("clock_getres() failed\n");
	}

	printf("Test FAILED\n");
	return PTS_FAIL;
}