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glibc  2.9
sigaddset.c
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00001 /* Copyright (C) 1991, 1996, 2003 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 "sigsetops.h"
00020 
00021 /* Add SIGNO to SET.  */
00022 int
00023 sigaddset (set, signo)
00024      sigset_t *set;
00025      int signo;
00026 {
00027   if (set == NULL || signo <= 0 || signo >= NSIG)
00028     {
00029       __set_errno (EINVAL);
00030       return -1;
00031     }
00032 
00033   return __sigaddset (set, signo);
00034 }
00035 libc_hidden_def (sigaddset)