diff --git a/ap/libc/glibc/glibc-2.23/stdlib/testdiv.c b/ap/libc/glibc/glibc-2.23/stdlib/testdiv.c
new file mode 100644
index 0000000..7aa6ed9
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/stdlib/testdiv.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 1992-2016 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 <stdlib.h>
+#include <stdio.h>
+
+int
+main (void)
+{
+  int err = 0;
+  int i, j;
+  while (scanf ("%d %d\n", &i, &j) == 2)
+    {
+      div_t d = div (i, j);
+      printf ("%d / %d = %d + %d/%d", i, j, d.quot, d.rem, j);
+      if (i == d.quot * j + d.rem)
+	fputs ("  OK\n", stdout);
+      else
+	{
+	  fputs ("  FAILED\n", stdout);
+	  err = 1;
+	}
+    }
+  return err;
+}