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
25// libstdc++/9151
26void
27test06()
28{
29  using namespace std;
30  bool test __attribute__((unused)) = true;
31
32  int prec = numeric_limits<double>::digits10 + 2;
33  double oval = numeric_limits<double>::min();
34
35  wstringstream ostr;
36  ostr.precision(prec);
37  ostr << oval;
38  wstring sval = ostr.str();
39  wistringstream istr(sval);
40  double ival;
41  istr >> ival;
42  VERIFY( abs(oval-ival)/oval < DBL_EPSILON );
43}
44
45int
46main()
47{
48  test06();
49  return 0;
50}
51