sigaddset.c 1.1 KB

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  1. /* Copyright (C) 1991, 1996 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Library General Public License as
  5. published by the Free Software Foundation; either version 2 of the
  6. License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Library General Public License for more details.
  11. You should have received a copy of the GNU Library General Public
  12. License along with the GNU C Library; see the file COPYING.LIB. If not,
  13. write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  14. Boston, MA 02111-1307, USA. */
  15. #include "sigsetops.h"
  16. /* Add SIGNO to SET. */
  17. int sigaddset (sigset_t *set, int signo)
  18. {
  19. if (set == NULL || signo <= 0 || signo >= NSIG)
  20. {
  21. __set_errno (EINVAL);
  22. return -1;
  23. }
  24. return __sigaddset (set, signo);
  25. }