Function omul

zic.c:4096–4111

Return T1 * T2, but diagnose any overflow and exit. */

/* Return T1 + T2, but diagnose any overflow and exit.
   This is like oadd, except the result must fit in min_time..max_time range,
   which on oddball machines can be a smaller range than ZIC_MIN..ZIC_MAX.  */
ATTRIBUTE_PURE_114833_HACK
static zic_t
tadd(zic_t t1, zic_t t2)
{
  zic_t sum = oadd(t1, t2);
  if (min_time <= sum && sum <= max_time)
    return sum;
  time_overflow();
}

/* Return T1 * T2, but diagnose any overflow and exit.  */
ATTRIBUTE_PURE_114833_HACK
static zic_t
omul(zic_t t1, zic_t t2)
{
#ifdef ckd_mul
  zic_t product;
  if (!ckd_mul(&product, t1, t2))