sigismem.c 1.2 KB

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  1. /* Copyright (C) 1991,96,2002 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 Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the 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. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, write to the Free
  13. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  14. 02111-1307 USA. */
  15. #define __need_NULL
  16. #include <stddef.h>
  17. #include <signal.h>
  18. #include <errno.h>
  19. /* Return 1 if SIGNO is in SET, 0 if not. */
  20. int sigismember (const sigset_t *set, int signo)
  21. {
  22. if (set == NULL || signo <= 0 || signo >= NSIG)
  23. {
  24. __set_errno (EINVAL);
  25. return -1;
  26. }
  27. return __sigismember (set, signo);
  28. }