compiler/clib/sigaddset.c

   1 /*
   2     Copyright © 1995-2012, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     ANSI C function sigaddset().
   6 */
   7
   8 #include <stddef.h>
   9
  10 /*****************************************************************************
  11
  12     NAME */
  13 #include <signal.h>
  14
  15         int sigaddset (
  16
  17 /*  SYNOPSIS */
  18         sigset_t *set,
  19         int signum)
  20
  21 /*  FUNCTION
  22
  23     INPUTS
  24
  25     RESULT
  26
  27     NOTES
  28
  29     EXAMPLE
  30
  31     BUGS
  32
  33     SEE ALSO
  34
  35     INTERNALS
  36
  37 ******************************************************************************/
  38 {
  39     if (NULL != set) {
  40         unsigned int i = (signum >> 5);
  41         set->__val[i] |= (1 << (signum & 0x1f));
  42         return 0;
  43     }
  44
  45     return -1;
  46 } /* sigaddset */