amiga-tz/library/time_localtime_tzset.c

#include "time_header.h"

struct tm *localtime_tzset(time_t const *timep, struct tm *tmp, bool setname)
{
    int err = lock();

    if (err) {
        errno = err;
        return NULL;
    }

    if (setname || !lcl_is_set)
        tzset_unlocked();

    tmp = localsub(lclptr, timep, setname, tmp);

    unlock();

    return tmp;
}