compiler/clib/localtime_r.c

   1 /*
   2     Copyright © 1995-2012, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Convert a time into a string, reentrant.
   6 */
   7
   8 #include "__arosc_privdata.h"
   9
  10 /*****************************************************************************
  11
  12     NAME */
  13 #include <time.h>
  14
  15         struct tm * localtime_r (
  16
  17 /*  SYNOPSIS */
  18         const time_t * tt,
  19         struct tm * tm)
  20
  21 /*  FUNCTION
  22         Splits the system time in seconds into a structure.
  23         The members of the tm structure are:
  24
  25         tm_sec - The number of seconds after the minute, normally in
  26                  the range 0 to 59, but can be up to 61 to allow for leap
  27                  seconds.
  28
  29         tm_min - The number of minutes after the hour, in the range 0 to 59.
  30
  31         tm_hour - The number of hours past midnight, in the range 0 to 23.
  32
  33         tm_mday - The day of the month, in the range 1 to 31.
  34
  35         tm_mon - The number of months since January, in the range 0 to 11.
  36
  37         tm_year - The number of years since 1900.
  38
  39         tm_wday - The number of days since Sunday, in the range 0 to 6.
  40
  41         tm_yday - The number of days since January 1, in the range  0 to 365.
  42
  43         tm_isdst - A flag that indicates whether daylight saving time
  44                    is in effect at the time described. The value is positive
  45                    if daylight saving time is in effect, zero if it is not,
  46                    and negative if the information is not available.
  47
  48     INPUTS
  49         tt - A time in seconds from the 1. Jan 1970
  50         tm - A struct tm to store the result in
  51
  52     RESULT
  53         The pointer passed in tm.
  54
  55     NOTES
  56
  57     EXAMPLE
  58         time_t    tt;
  59         struct tm tm;
  60
  61         // Get time
  62         time (&tt);
  63
  64         // Break time up
  65         localtime_r (&tt, &tm);
  66
  67     BUGS
  68
  69     SEE ALSO
  70         time(), ctime_r(), asctime_r(), gmtime_r()
  71
  72     INTERNALS
  73
  74 ******************************************************************************/
  75 {
  76     struct aroscbase *aroscbase = __GM_GetBase();
  77
  78     time_t ti = *tt;
  79
  80     ti -= aroscbase->acb_gmtoffset * 60;
  81
  82     return gmtime_r (&ti, tm);
  83 } /* localtime_r */