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

Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/stdio-common/tst-long-dbl-fphex.c b/ap/libc/glibc/glibc-2.23/stdio-common/tst-long-dbl-fphex.c
new file mode 100644
index 0000000..6241dfd
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/stdio-common/tst-long-dbl-fphex.c
@@ -0,0 +1,53 @@
+/* This file is part of the GNU C Library.
+   Copyright (C) 2012-2016 Free Software Foundation, Inc.
+   Contributed by Marek Polacek <polacek@redhat.com>, 2012.
+
+   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>
+
+/* Prototype for our test function.  */
+static int do_test (void);
+
+static int
+do_test (void)
+{
+#ifndef NO_LONG_DOUBLE
+  int result = 0;
+  const long double x = 24.5;
+  wchar_t a[16];
+  swprintf (a, sizeof a / sizeof a[0], L"%La\n", x);
+  wchar_t A[16];
+  swprintf (A, sizeof A / sizeof A[0], L"%LA\n", x);
+
+  /* Here wprintf can return four valid variants.  We must accept all
+     of them.  */
+  result |= (wmemcmp (a, L"0xc.4p+1", 8) == 0
+	     && wmemcmp (A, L"0XC.4P+1", 8) == 0);
+  result |= (wmemcmp (a, L"0x3.1p+3", 8) == 0
+	     && wmemcmp (A, L"0X3.1P+3", 8) == 0);
+  result |= (wmemcmp (a, L"0x6.2p+2", 8) == 0
+	     && wmemcmp (A, L"0X6.2P+2", 8) == 0);
+  result |= (wmemcmp (a, L"0x1.88p+4", 8) == 0
+	     && wmemcmp (A, L"0X1.88P+4", 8) == 0);
+
+  return result != 1;
+#else
+  return 0;
+#endif
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"