2003-12-31 23:58:57 +00:00
|
|
|
/* Convert UTC calendar time to simple time. Like mktime but assumes UTC.
|
|
|
|
|
|
2015-01-02 16:28:19 +00:00
|
|
|
Copyright (C) 1994-2015 Free Software Foundation, Inc.
|
1997-01-21 06:10:42 +00:00
|
|
|
This file is part of the GNU C Library.
|
1995-02-18 01:27:10 +00:00
|
|
|
|
1997-01-21 06:10:42 +00:00
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
2001-07-06 04:58:11 +00:00
|
|
|
modify it under the terms of the GNU Lesser General Public
|
|
|
|
|
License as published by the Free Software Foundation; either
|
|
|
|
|
version 2.1 of the License, or (at your option) any later version.
|
1995-02-18 01:27:10 +00:00
|
|
|
|
1997-01-21 06:10:42 +00:00
|
|
|
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
|
2001-07-06 04:58:11 +00:00
|
|
|
Lesser General Public License for more details.
|
1995-02-18 01:27:10 +00:00
|
|
|
|
2001-07-06 04:58:11 +00:00
|
|
|
You should have received a copy of the GNU Lesser General Public
|
2012-02-09 23:18:22 +00:00
|
|
|
License along with the GNU C Library; if not, see
|
|
|
|
|
<http://www.gnu.org/licenses/>. */
|
1995-02-18 01:27:10 +00:00
|
|
|
|
2003-12-31 23:58:57 +00:00
|
|
|
#ifdef HAVE_CONFIG_H
|
|
|
|
|
# include <config.h>
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#ifdef _LIBC
|
|
|
|
|
# include <time.h>
|
|
|
|
|
#else
|
|
|
|
|
# include "timegm.h"
|
|
|
|
|
|
|
|
|
|
/* Portable standalone applications should supply a "time_r.h" that
|
|
|
|
|
declares a POSIX-compliant gmtime_r, for the benefit of older
|
|
|
|
|
implementations that lack gmtime_r or have a nonstandard one.
|
|
|
|
|
See the gnulib time_r module for one way to implement this. */
|
|
|
|
|
# include <time_r.h>
|
|
|
|
|
# undef __gmtime_r
|
|
|
|
|
# define __gmtime_r gmtime_r
|
|
|
|
|
time_t __mktime_internal (struct tm *,
|
|
|
|
|
struct tm * (*) (time_t const *, struct tm *),
|
|
|
|
|
time_t *);
|
|
|
|
|
#endif
|
1995-02-18 01:27:10 +00:00
|
|
|
|
|
|
|
|
time_t
|
2003-12-31 23:58:57 +00:00
|
|
|
timegm (struct tm *tmp)
|
1995-02-18 01:27:10 +00:00
|
|
|
{
|
Fri Sep 29 03:43:51 1995 Paul Eggert <eggert@twinsun.com>
Rewrite mktime from scratch for performance, and for correctness
in the presence of leap seconds.
* time/mktime.c (ydhms_tm_diff, not_equal_tm, print_tm, check_result):
New functions.
(LEAP_SECONDS_POSSIBLE, CHAR_BIT, INT_MIN, INT_MAX,
TIME_T_MIN, TIME_T_MAX, TM_YEAR_BASE, EPOCH_YEAR): New macros.
<limits.h>, <stdlib.h>: New #includes.
(main): Support tests with given broken-down value; support benchmarks.
(__mon_lengths, debugging_enabled, printtm, dist_tm, doit,
do_normalization, normalize, BAD_STRUCT_TM, SKIP_VALUE,
<ctype.h>): Remove.
* time/time.h, time/mktime.c (__mktime_internal): New offset arg.
* time/mktime.c (mktime), time/timegm.c (timegm): Use it.
* time/mktime.c (__mon_yday): New variable; replaces `__mon_lengths'.
time/offtime.c (__offtime), time/tzset.c (compute_change): Use it.
* time/offtime.c (__offtime): Remove useless assignment
`tp->tm_isdst = -1'.
* manual/maint.texi: Update credits.
Fri Oct 6 00:28:53 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* sysdeps/unix/common/readv.S: Moved to sysdeps/unix/bsd.
* sysdeps/unix/common/writev.S: Moved to sysdeps/unix/bsd.
* sysdeps/unix/sysv/linux/readv.c: File removed.
* sysdeps/unix/sysv/linux/writev.c: File removed.
* sysdeps/unix/configure.in: Check for readv and writev syscalls.
* sysdeps/unix/configure.in: If eval doesn't set $unix_srcname,
set it to $unix_syscall instead of $unix_function.
1995-10-06 04:50:55 +00:00
|
|
|
static time_t gmtime_offset;
|
1995-02-18 01:27:10 +00:00
|
|
|
tmp->tm_isdst = 0;
|
Fri Sep 29 03:43:51 1995 Paul Eggert <eggert@twinsun.com>
Rewrite mktime from scratch for performance, and for correctness
in the presence of leap seconds.
* time/mktime.c (ydhms_tm_diff, not_equal_tm, print_tm, check_result):
New functions.
(LEAP_SECONDS_POSSIBLE, CHAR_BIT, INT_MIN, INT_MAX,
TIME_T_MIN, TIME_T_MAX, TM_YEAR_BASE, EPOCH_YEAR): New macros.
<limits.h>, <stdlib.h>: New #includes.
(main): Support tests with given broken-down value; support benchmarks.
(__mon_lengths, debugging_enabled, printtm, dist_tm, doit,
do_normalization, normalize, BAD_STRUCT_TM, SKIP_VALUE,
<ctype.h>): Remove.
* time/time.h, time/mktime.c (__mktime_internal): New offset arg.
* time/mktime.c (mktime), time/timegm.c (timegm): Use it.
* time/mktime.c (__mon_yday): New variable; replaces `__mon_lengths'.
time/offtime.c (__offtime), time/tzset.c (compute_change): Use it.
* time/offtime.c (__offtime): Remove useless assignment
`tp->tm_isdst = -1'.
* manual/maint.texi: Update credits.
Fri Oct 6 00:28:53 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* sysdeps/unix/common/readv.S: Moved to sysdeps/unix/bsd.
* sysdeps/unix/common/writev.S: Moved to sysdeps/unix/bsd.
* sysdeps/unix/sysv/linux/readv.c: File removed.
* sysdeps/unix/sysv/linux/writev.c: File removed.
* sysdeps/unix/configure.in: Check for readv and writev syscalls.
* sysdeps/unix/configure.in: If eval doesn't set $unix_srcname,
set it to $unix_syscall instead of $unix_function.
1995-10-06 04:50:55 +00:00
|
|
|
return __mktime_internal (tmp, __gmtime_r, &gmtime_offset);
|
1995-02-18 01:27:10 +00:00
|
|
|
}
|
