--- /dev/null
+// Copyright (C) 2005, 2009 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This 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 General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <cmath> // for abs
+#include <cfloat> // for DBL_EPSILON
+#include <sstream>
+#include <limits>
+#include <testsuite_hooks.h>
+
+void
+test05()
+{
+ using namespace std;
+ bool test __attribute__((unused)) = true;
+
+ double pi = 3.14159265358979323846;
+ wostringstream ostr;
+ ostr.precision(20);
+ ostr << pi;
+ wstring sval = ostr.str();
+ wistringstream istr(sval);
+ double d;
+ istr >> d;
+ VERIFY( abs(pi-d)/pi < DBL_EPSILON );
+}
+
+int
+main()
+{
+ test05();
+ return 0;
+}