Update.

[kopensolaris-gnu/glibc.git] / time / localtime.c

diff --git a/time/localtime.c b/time/localtime.c
index a729b97..1488792 100644 (file)
--- a/time/localtime.c
+++ b/time/localtime.c
@@ -1,83 +1,44 @@
-/* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+/* Convert `time_t' to `struct tm' in local time zone.
+   Copyright (C) 1991, 92, 93, 95, 96, 97, 98 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
 
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
 
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
 
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
-#include <ansidecl.h>
-#include <stddef.h>
-#include <ctype.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
 #include <time.h>
 
+/* The C Standard says that localtime and gmtime return the same pointer.  */
+struct tm _tmbuf;
 
-#ifndef        HAVE_GNU_LD
-#define        __tzname        tzname
-#define        __daylight      daylight
-#define        __timezone      timezone
-#endif
 
-/* Return the `struct tm' representation of *TIMER in the local timezone.  */
+/* Return the `struct tm' representation of *T in local time,
+   using *TP to store the result.  */
 struct tm *
-DEFUN(localtime, (timer), CONST time_t *timer)
+__localtime_r (t, tp)
+     const time_t *t;
+     struct tm *tp;
 {
-  extern int __use_tzfile;
-  extern int EXFUN(__tz_compute, (time_t timer, struct tm *tp));
-  extern int EXFUN(__tzfile_compute, (time_t timer,
-                                     long int *leap_correct, int *leap_hit));
-  register struct tm *tp;
-  long int leap_correction;
-  int leap_extra_secs;
-
-  if (timer == NULL)
-    {
-      errno = EINVAL;
-      return NULL;
-    }
-
-  {
-    /* Make sure the database is initialized.  */
-    extern int __tzset_run;
-    if (! __tzset_run)
-      __tzset ();
-  }
-
-  if (__use_tzfile)
-    {
-      if (! __tzfile_compute (*timer, &leap_correction, &leap_extra_secs))
-       return NULL;
-    }
-  else
-    {
-      tp = gmtime (timer);
-      if (tp == NULL)
-       return NULL;
-
-      if (! __tz_compute (*timer, tp))
-       return NULL;
+  return __tz_convert (t, 1, tp);
+}
+weak_alias (__localtime_r, localtime_r)
 
-      leap_correction = 0L;
-      leap_extra_secs = 0;
-    }
 
-  tp = __offtime (timer, __timezone - leap_correction);
-  tp->tm_sec += leap_extra_secs;
-  tp->tm_isdst = __daylight;
-  tp->tm_gmtoff = __timezone;
-  tp->tm_zone = __tzname[__daylight];
-  return tp;
+/* Return the `struct tm' representation of *T in local time.  */
+struct tm *
+localtime (t)
+     const time_t *t;
+{
+  return __tz_convert (t, 1, &_tmbuf);
 }