sigisempty.c 1.1 KB

123456789101112131415161718192021222324252627282930313233343536
  1. /* Copyright (C) 1991, 1996, 1997 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. #include <errno.h>
  16. #include <signal.h>
  17. #define __need_NULL
  18. #include <stddef.h>
  19. /* Test whether SET is empty. */
  20. int
  21. sigisemptyset (set)
  22. const sigset_t *set;
  23. {
  24. if (set == NULL)
  25. {
  26. __set_errno (EINVAL);
  27. return -1;
  28. }
  29. return __sigisemptyset (set);
  30. }