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/* $Id: timer.c 2423 2010-03-13 07:09:49Z aturner $ */
/*
* Copyright (c) 2001-2010 Aaron Turner.
* 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.
* 3. Neither the names of the copyright owners nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``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 AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#include "config.h"
#include "defines.h"
#include "common.h"
#include "timer.h"
#include <stdlib.h>
/* Miscellaneous timeval routines */
/**
* Divide tvp by div, storing the result in tvp
*/
void
timerdiv(struct timeval *tvp, float div)
{
double interval;
if (div == 0 || div == 1)
return;
interval = ((double)tvp->tv_sec * 1000000 + tvp->tv_usec) / (double)div;
tvp->tv_sec = interval / (int)1000000;
tvp->tv_usec = interval - (tvp->tv_sec * 1000000);
}
/* Divide tvs by div, storing the result in tvs */
void timesdiv(struct timespec *tvs, float div)
{
double interval;
if (div == 0 || div == 1)
return;
interval = ((double)tvs->tv_sec * 1000000000 + tvs->tv_nsec) / (double)div;
tvs->tv_sec = interval / (int)1000000000;
tvs->tv_nsec = interval - (tvs->tv_sec * 1000000000);
}
void
init_delta_time(delta_t *ctx)
{
#ifdef HAVE_ABSOLUTE_TIME
SetZero(*ctx);
#else
timerclear(ctx);
#endif
}
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