compiler/stdc/__stdc_gmtoffset.c

   1 /*
   2     Copyright © 1995-2013, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Internal arossstdc function to get current GMT offset
   6 */
   7 #include <proto/exec.h>
   8 #include <proto/locale.h>
   9 #include <exec/execbase.h>
  10
  11 #include "__optionallibs.h"
  12
  13 /*****************************************************************************
  14
  15     NAME */
  16 #include <time.h>
  17
  18         int __stdc_gmtoffset (
  19
  20 /*  SYNOPSIS */
  21         void)
  22
  23 /*  FUNCTION
  24
  25     INPUTS
  26
  27     RESULT
  28         The offset to GMT in minutes
  29
  30     NOTES
  31         Will return 0 when locale.library is not loaded into memory yet.
  32
  33     EXAMPLE
  34
  35     BUGS
  36
  37     SEE ALSO
  38
  39     INTERNALS
  40         Will always query the current locale through locale.library to
  41         get the GMT offset.
  42
  43 ******************************************************************************/
  44 {
  45     struct Locale *loc;
  46     int gmtoffset = 0;
  47
  48     if (__locale_available() && (loc = OpenLocale(NULL)))
  49     {
  50         gmtoffset = (int)loc->loc_GMTOffset;
  51         CloseLocale(loc);
  52     }
  53
  54     return gmtoffset;
  55 }