1// Copyright (C) 2005 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 2, 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 COPYING.  If not, write to the Free
16// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
17// USA.
18
19#include <cmath> // for abs
20#include <cfloat> // for DBL_EPSILON
21#include <sstream>
22#include <limits>
23#include <testsuite_hooks.h>
24
25void
26test05()
27{
28  using namespace std;
29  bool test __attribute__((unused)) = true;
30
31  double pi = 3.14159265358979323846;
32  wostringstream ostr;
33  ostr.precision(20);
34  ostr << pi;
35  wstring sval = ostr.str();
36  wistringstream istr(sval);
37  double d;
38  istr >> d;
39  VERIFY( abs(pi-d)/pi < DBL_EPSILON );
40}
41
42int
43main()
44{
45  test05();
46  return 0;
47}
48