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59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/* Convert UTC calendar time to simple time. Like mktime but assumes UTC.
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Copyright (C) 1994-2023 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _LIBC
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# include <libc-config.h>
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#endif
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#include <time.h>
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#include <errno.h>
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#include "mktime-internal.h"
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__time64_t
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__timegm64 (struct tm *tmp)
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{
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static mktime_offset_t gmtime_offset;
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tmp->tm_isdst = 0;
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return __mktime_internal (tmp, __gmtime64_r, &gmtime_offset);
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}
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#if defined _LIBC && __TIMESIZE != 64
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libc_hidden_def (__timegm64)
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time_t
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timegm (struct tm *tmp)
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{
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struct tm tm = *tmp;
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__time64_t t = __timegm64 (&tm);
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if (in_time_t_range (t))
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{
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*tmp = tm;
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return t;
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}
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else
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{
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__set_errno (EOVERFLOW);
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return -1;
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}
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}
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#endif
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