localtime_r, localtime64_r - convert date and time to string (thread-safe)

Syntax	#include <time.h> struct tm *localtime_r(const time_t *clock, struct tm *result);  struct tm *localtime64_r(const time64_t *clock, struct tm *result);
Description	localtime_r() and localtime64_r() convert the time value pointed to by clock to exactly the same time format as localtime() and localtime64r() and write the result in the memory area pointed to by result (with at least 26 bytes).
Return val.	Pointer to a string pointed to by result
		if successful.
	Null pointer	if an error occurs.
See also	asctime(), asctime_r(), ctime(), ctime_r(), localtime(), time().