static void
timevalsub(struct timeval *t1, const struct timeval *t2)
{
t1->tv_sec -= t2->tv_sec;
t1->tv_usec -= t2->tv_usec;
timevalfix(t1);
}
void
timevaladd(struct timeval *t1, const struct timeval *t2)
{
t1->tv_sec += t2->tv_sec;
t1->tv_usec += t2->tv_usec;
timevalfix(t1);
}
/*! Subtract a timeval.
Subtract from \b to the time in \b val. The result time can
become negative.
@param to result and value from which to subtract
@param val value to subtract
@see timevaladd
*/
void timevalsub(struct timeval *to, struct timeval *val) {
to->tv_sec -= val->tv_sec;
to->tv_usec -= val->tv_usec;
timevalfix(to);
}
/*! Add a timeval.
Add in \b to the time in \b val.
@param to result and value to add
@param val value to add
@see timevalsub
*/
void timevaladd(struct timeval *to, struct timeval *val) {
to->tv_sec += val->tv_sec;
to->tv_usec += val->tv_usec;
timevalfix(to);
}
