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/* $Id$ */
/***
This file is part of ivam2.
ivam2 is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
ivam2 is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU General Public License
along with ivam2; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "timevalarith.h"
struct timeval timeval_max(struct timeval a, struct timeval b) {
if (a.tv_sec > b.tv_sec)
return a;
if (a.tv_sec < b.tv_sec)
return b;
if (a.tv_usec > b.tv_usec)
return a;
return b;
}
struct timeval timeval_add(struct timeval a, uint32_t d) {
uint64_t sec, usec;
struct timeval r;
sec = (uint64_t) a.tv_sec + (d / 1000000L);
usec = (uint64_t) a.tv_usec + (d % 1000000L);
while (usec > 1000000L) {
usec -= 1000000L;
sec++;
}
r.tv_sec = (long) sec;
r.tv_usec = (long) usec;
return r;
}
struct timeval timeval_sub(struct timeval a, uint32_t d) {
uint64_t sec, usec;
struct timeval r;
sec = (uint64_t) a.tv_sec - (d / 1000000L);
usec = (uint64_t) a.tv_usec;
d = (d % 1000000L);
if (usec > d)
usec -= d;
else {
sec--;
usec = 1000000L + usec - d;
}
r.tv_sec = (long) sec;
r.tv_usec = (long) usec;
return r;
}
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