| Standards / Extensions | C or C++ | Dependencies |
|---|---|---|
Single UNIX Specification, Version 2 |
both | OS/390 V2R8 |
#define _XOPEN_SOURCE 500
#include <time.h>
struct tm *localtime_r(const time_t *__restrict__ clock,
struct tm *__restrict__ result);#define _LARGE_TIME_API
#include <time.h>
struct tm *localtime64_r(const time64_t *__restrict__ clock,
struct tm *__restrict__ result);The localtime_r() function converts the calendar time pointed to by clock into a broken-down time stored in the structure to which result points. The localtime_r() function also returns a pointer to that same structure.
Unlike localtime(), the reentrant version is not required to set tzname.
The localtime64_r() function behaves exactly like localtime_r() except it will break down a time64_t value pointing to a calendar time beyond 03:14:07 UTC on January 19, 2038 with a limit of 23:59:59 UTC on December 31, 9999.
If successful, localtime_r() returns a pointer to the structure pointed to by the argument result.
If an error is detected, localtime() returns a null pointer and set errno to indicate the error.