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glibc  2.9
sigandset.c
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00001 /* Copyright (C) 1991, 1996, 1997 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <errno.h>
00020 #include <signal.h>
00021 #define __need_NULL
00022 #include <stddef.h>
00023 
00024 /* Combine sets LEFT and RIGHT by logical AND and place result in DEST.  */
00025 int
00026 sigandset (dest, left, right)
00027      sigset_t *dest;
00028      const sigset_t *left;
00029      const sigset_t *right;
00030 {
00031   if (dest == NULL || left == NULL || right == NULL)
00032     {
00033       __set_errno (EINVAL);
00034       return -1;
00035     }
00036 
00037   return __sigandset (dest, left, right);
00038 }