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/*
* now.c - test out the now library.
*
* Copyright (c) 1997 Phil Maker
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: now.c,v 1.1.1.1 1997/11/23 11:45:50 pjm Exp $
*/
#include <stdio.h>
#include "../src/now.h"
#include <unistd.h>
double t, u, d;
int i;
int main() {
printf("*** now.c: testing now.h\n");
printf("**** test 0: time a sleep(1) with now()\n\t");
for(i = 0; i != 6; i++) {
t = now();
sleep(1);
d = now() - t;
printf("%8.3fs ", d);
if(!(0.9 <= d && d <= 1.1) ) {
printf("\nerror: now.c measurement of sleep(1) = %f >10%% error\n", d);
}
}
printf("\n");
printf("**** test 1: time a sleep(1) with now_delta()...now_delta()\n\t");
for(i = 0; i != 6; i++) {
(void) now_delta(&t); /* start timer */
sleep(1);
d = now() - t;
printf("%8.3fs ", d);
if(!(0.9 <= d && d <= 1.1) ) {
printf("\nerror: now.c measurement of sleep(1) = %f >10%% error\n", d);
}
}
printf("\n");
printf("**** test 2: time a sleep(1) with now_reset()\n\t");
for(i = 0; i != 6; i++) {
now_reset();
sleep(1);
d = now();
printf("%8.3fs ", d);
if(!(0.9 <= d && d <= 1.1) ) {
printf("\nerror: now.c measurement of sleep(1) = %f >10%% error\n", d);
}
}
printf("\n");
printf("**** test 4: speed test, now() call = ");
(void) now_delta(&t);
for(i = 0; i != 100*1000; i++) {
u = now();
}
printf(" %8.3f us\n", (now_delta(&t)/i)*1.0e6);
return 0;
}
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