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-rw-r--r--signal/sigismem.c32
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diff --git a/signal/sigismem.c b/signal/sigismem.c
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+++ b/signal/sigismem.c
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+/* Copyright (C) 1991 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include "sigsetops.h"
+
+/* Return 1 if SIGNO is in SET, 0 if not. */
+int
+DEFUN(sigismember, (set, signo), CONST sigset_t *set AND int signo)
+{
+ if (set == NULL || signo <= 0 || signo >= NSIG)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ return __sigismember (set, signo);
+}