zig/lib/libc/musl/src/time/localtime_r.c
Andrew Kelley 49d1a4c562 move lib dirs to lib subdir
also start prefering NtDll API. so far:
 * NtQueryInformationFile
 * NtClose

adds a performance workaround for windows unicode conversion. but that
should probably be removed before merging
2019-07-15 17:54:50 -04:00

22 lines
580 B
C
Vendored

#include "time_impl.h"
#include <errno.h>
#include <limits.h>
struct tm *__localtime_r(const time_t *restrict t, struct tm *restrict tm)
{
/* Reject time_t values whose year would overflow int because
* __secs_to_zone cannot safely handle them. */
if (*t < INT_MIN * 31622400LL || *t > INT_MAX * 31622400LL) {
errno = EOVERFLOW;
return 0;
}
__secs_to_zone(*t, 0, &tm->tm_isdst, &tm->__tm_gmtoff, 0, &tm->__tm_zone);
if (__secs_to_tm((long long)*t + tm->__tm_gmtoff, tm) < 0) {
errno = EOVERFLOW;
return 0;
}
return tm;
}
weak_alias(__localtime_r, localtime_r);