text: /* Copyright (C) 1991-2015 Free Software Foundation, Inc.
     This file is part of the GNU C Library.
  
     The GNU C Library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     License as published by the Free Software Foundation; either
     version 2.1 of the License, or (at your option) any later version.
  
     The GNU C Library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
     License along with the GNU C Library; if not, see
     <http://www.gnu.org/licenses/>.  */
  
  #include "sigsetops.h"
  
  /* Add SIGNO to SET.  */
  int
  sigdelset (set, signo)
       sigset_t *set;
       int signo;
  {
    if (set == NULL || signo <= 0 || signo >= NSIG)
      {
        __set_errno (EINVAL);
        return -1;
      }
  
    return __sigdelset (set, signo);
  }
  libc_hidden_def (sigdelset)
  