/* Copyright (C) 1991,96,2002 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/>. */ #define __need_NULL #include <stddef.h> #include <signal.h> #include <errno.h> /* Return 1 if SIGNO is in SET, 0 if not. */ int sigismember (const sigset_t *set, int signo) { if (set == NULL || signo <= 0 || signo >= NSIG) { __set_errno (EINVAL); return -1; } return __sigismember (set, signo); }