[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/wcsmbs/wcsncat.c b/ap/libc/glibc/glibc-2.23/wcsmbs/wcsncat.c
new file mode 100644
index 0000000..9b22764
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/wcsmbs/wcsncat.c
@@ -0,0 +1,79 @@
+/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
+
+ 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 <wchar.h>
+
+#ifndef WCSNCAT
+# define WCSNCAT wcsncat
+#endif
+
+/* Append no more than N wide-character of SRC onto DEST. */
+wchar_t *
+WCSNCAT (wchar_t *dest, const wchar_t *src, size_t n)
+{
+ wchar_t c;
+ wchar_t * const s = dest;
+
+ /* Find the end of DEST. */
+ do
+ c = *dest++;
+ while (c != L'\0');
+
+ /* Make DEST point before next character, so we can increment
+ it while memory is read (wins on pipelined cpus). */
+ dest -= 2;
+
+ if (n >= 4)
+ {
+ size_t n4 = n >> 2;
+ do
+ {
+ c = *src++;
+ *++dest = c;
+ if (c == L'\0')
+ return s;
+ c = *src++;
+ *++dest = c;
+ if (c == L'\0')
+ return s;
+ c = *src++;
+ *++dest = c;
+ if (c == L'\0')
+ return s;
+ c = *src++;
+ *++dest = c;
+ if (c == L'\0')
+ return s;
+ } while (--n4 > 0);
+ n &= 3;
+ }
+
+ while (n > 0)
+ {
+ c = *src++;
+ *++dest = c;
+ if (c == L'\0')
+ return s;
+ n--;
+ }
+
+ if (c != L'\0')
+ *++dest = L'\0';
+
+ return s;
+}