61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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#include <localeinfo.h>
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#include <stddef.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#ifndef HAVE_GNU_LD
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#define __tzname tzname
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#define __daylight daylight
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#define __timezone timezone
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#endif
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/* Return the `struct tm' representation of *TIMER in the local timezone. */
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struct tm *
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DEFUN(localtime, (timer), CONST time_t *timer)
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{
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extern int EXFUN(__tz_compute, (time_t, struct tm));
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register struct tm *tp;
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if (timer == NULL)
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{
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errno = EINVAL;
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return NULL;
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}
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tp = gmtime(timer);
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if (tp == NULL)
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return NULL;
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if (!__tz_compute (*timer, *tp))
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return NULL;
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tp = __offtime(timer, __timezone);
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tp->tm_isdst = __daylight;
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tp->tm_gmtoff = __timezone;
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tp->tm_zone = __tzname[__daylight];
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return tp;
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}
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