1 files changed, 33 insertions, 0 deletions
diff --git a/libc/signal/sigismem.c b/libc/signal/sigismem.c
new file mode 100644
index 000000000..3e9b67c6c
--- /dev/null
+++ b/libc/signal/sigismem.c
@@ -0,0 +1,33 @@
+/* Copyright (C) 1991, 1996 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include "errno.h"
+#define _EXTERN_INLINE
+#define __USE_EXTERN_INLINES   1
+#include "signal.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) {
+      errno=EINVAL;
+      return -1;
+    }
+
+  return __sigismember (set, signo);
+}