[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/signal/sigempty.c b/ap/libc/glibc/glibc-2.23/signal/sigempty.c
new file mode 100644
index 0000000..2c96de9
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/signal/sigempty.c
@@ -0,0 +1,36 @@
+/* Copyright (C) 1991-2016 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 <errno.h>
+#include <signal.h>
+#include <string.h>
+
+/* Clear all signals from SET. */
+int
+sigemptyset (sigset_t *set)
+{
+ if (set == NULL)
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ memset (set, 0, sizeof (sigset_t));
+
+ return 0;
+}
+libc_hidden_def (sigemptyset)