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annotate lib/time_r.c @ 4739:04758f7475fd

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Merge changes from glibc.
author Paul Eggert <eggert@cs.ucla.edu>
date Fri, 26 Sep 2003 07:35:01 +0000
parents 13cc36518e0b
children a48fb0e98c8c
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1 /* Reentrant time functions like localtime_r.
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2
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3 Copyright (C) 2003 Free Software Foundation, Inc.
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4
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5 This program is free software; you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 2, or (at your option)
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8 any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License along
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16 with this program; if not, write to the Free Software Foundation,
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17 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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18
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19 /* Written by Paul Eggert. */
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20
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21 #if HAVE_CONFIG_H
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22 # include <config.h>
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23 #endif
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24
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25 #include "time_r.h"
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26
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27 #include <string.h>
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28
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29 static char *
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30 copy_string_result (char *dest, char const *src)
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31 {
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32 if (! src)
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33 return 0;
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34 return strcpy (dest, src);
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35 }
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36
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37 static struct tm *
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38 copy_tm_result (struct tm *dest, struct tm const *src)
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39 {
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40 if (! src)
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41 return 0;
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42 *dest = *src;
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43 return dest;
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44 }
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47 char *
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48 asctime_r (struct tm const * restrict tm, char * restrict buf)
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49 {
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50 return copy_string_result (buf, asctime (tm));
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51 }
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52
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53 char *
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54 ctime_r (time_t const *t, char *buf)
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55 {
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56 return copy_string_result (buf, ctime (t));
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57 }
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58
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59 struct tm *
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60 gmtime_r (time_t const * restrict t, struct tm * restrict tp)
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61 {
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62 return copy_tm_result (tp, gmtime (t));
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63 }
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64
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65 struct tm *
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66 localtime_r (time_t const * restrict t, struct tm * restrict tp)
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67 {
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68 return copy_tm_result (tp, localtime (t));
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69 }