/* Written by Paul Eggert. */
/* Return the sum of two timespec values A and B. On overflow, return
- an extremal value. This assumes 0 <= tv_nsec <= 999999999. */
+ an extremal value. This assumes 0 <= tv_nsec < TIMESPEC_RESOLUTION. */
#include <config.h>
#include "timespec.h"
struct timespec
timespec_add (struct timespec a, struct timespec b)
{
- struct timespec r;
time_t rs = a.tv_sec;
time_t bs = b.tv_sec;
int ns = a.tv_nsec + b.tv_nsec;
- int nsd = ns - 1000000000;
+ int nsd = ns - TIMESPEC_RESOLUTION;
int rns = ns;
if (0 <= nsd)
{
high_overflow:
rs = TYPE_MAXIMUM (time_t);
- rns = 999999999;
+ rns = TIMESPEC_RESOLUTION - 1;
}
}
else
rs += bs;
- r.tv_sec = rs;
- r.tv_nsec = rns;
- return r;
+ return make_timespec (rs, rns);
}