[Feature][ZXW-33]merge ZXW 0428 version

Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/wcsmbs/wcstold_nan.c b/ap/libc/glibc/glibc-2.23/wcsmbs/wcstold_nan.c
new file mode 100644
index 0000000..6baeee7
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/wcsmbs/wcstold_nan.c
@@ -0,0 +1,30 @@
+/* Convert string for NaN payload to corresponding NaN.  Wide strings,
+   long double.
+   Copyright (C) 2015-2016 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 <math.h>
+
+/* This function is unused if long double and double have the same
+   representation.  */
+#ifndef __NO_LONG_DOUBLE_MATH
+# include "../stdlib/strtod_nan_wide.h"
+# include <strtod_nan_ldouble.h>
+
+# define STRTOD_NAN __wcstold_nan
+# include "../stdlib/strtod_nan_main.c"
+#endif