1// Copyright (C) 2005-2015 Free Software Foundation, Inc.
2//
3// This file is part of the GNU ISO C++ Library.  This library is free
4// software; you can redistribute it and/or modify it under the
5// terms of the GNU General Public License as published by the
6// Free Software Foundation; either version 3, or (at your option)
7// any later version.
8
9// This library is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13
14// You should have received a copy of the GNU General Public License along
15// with this library; see the file COPYING3.  If not see
16// <http://www.gnu.org/licenses/>.
17
18#include <cmath> // for abs
19#include <cfloat> // for DBL_EPSILON
20#include <sstream>
21#include <limits>
22#include <testsuite_hooks.h>
23
24void
25test05()
26{
27  using namespace std;
28  bool test __attribute__((unused)) = true;
29
30  double pi = 3.14159265358979323846;
31  wostringstream ostr;
32  ostr.precision(20);
33  ostr << pi;
34  wstring sval = ostr.str();
35  wistringstream istr(sval);
36  double d;
37  istr >> d;
38  VERIFY( abs(pi-d)/pi < DBL_EPSILON );
39}
40
41int
42main()
43{
44  test05();
45  return 0;
46}
47