static _PyTime_t
_PyTime_Divide(const _PyTime_t t, const _PyTime_t k,
const _PyTime_round_t round)
{
assert(k > 1);
if (round == _PyTime_ROUND_HALF_EVEN) {
_PyTime_t x, r, abs_r;
x = t / k;
r = t % k;
abs_r = Py_ABS(r);
if (abs_r > k / 2 || (abs_r == k / 2 && (Py_ABS(x) & 1))) {
if (t >= 0)
x++;
else
x--;
}
return x;
}
else if (round == _PyTime_ROUND_CEILING) {
if (t >= 0)
return (t + k - 1) / k;
else
return t / k;
}
else {
if (t >= 0)
return t / k;
else
return (t - (k - 1)) / k;
}
}
static _PyTime_t
_PyTime_Divide(_PyTime_t t, _PyTime_t k, _PyTime_round_t round)
{
assert(k > 1);
if (round == _PyTime_ROUND_HALF_UP) {
_PyTime_t x, r;
x = t / k;
r = t % k;
if (Py_ABS(r) >= k / 2) {
if (t >= 0)
x++;
else
x--;
}
return x;
}
else if (round == _PyTime_ROUND_CEILING) {
if (t >= 0)
return (t + k - 1) / k;
else
return (t - (k - 1)) / k;
}
else
return t / k;
}
static int
_PyTime_AsTimeval_impl(_PyTime_t t, struct timeval *tv, _PyTime_round_t round,
int raise)
{
const long k = US_TO_NS;
_PyTime_t secs, ns;
int res = 0;
int usec;
secs = t / SEC_TO_NS;
ns = t % SEC_TO_NS;
if (ns < 0) {
ns += SEC_TO_NS;
secs -= 1;
}
#ifdef MS_WINDOWS
/* On Windows, timeval.tv_sec is a long (32 bit),
whereas time_t can be 64-bit. */
assert(sizeof(tv->tv_sec) == sizeof(long));
#if SIZEOF_TIME_T > SIZEOF_LONG
if (secs > LONG_MAX) {
secs = LONG_MAX;
res = -1;
}
else if (secs < LONG_MIN) {
secs = LONG_MIN;
res = -1;
}
#endif
tv->tv_sec = (long)secs;
#else
/* On OpenBSD 5.4, timeval.tv_sec is a long.
Example: long is 64-bit, whereas time_t is 32-bit. */
tv->tv_sec = secs;
if ((_PyTime_t)tv->tv_sec != secs)
res = -1;
#endif
if (round == _PyTime_ROUND_HALF_UP) {
_PyTime_t r;
usec = (int)(ns / k);
r = ns % k;
if (Py_ABS(r) >= k / 2) {
if (ns >= 0)
usec++;
else
usec--;
}
}
else if (round == _PyTime_ROUND_CEILING)
usec = (int)((ns + k - 1) / k);
else
usec = (int)(ns / k);
if (usec >= SEC_TO_US) {
usec -= SEC_TO_US;
tv->tv_sec += 1;
}
assert(0 <= usec && usec < SEC_TO_US);
tv->tv_usec = usec;
if (res && raise)
_PyTime_overflow();
return res;
}
