1// 1999-11-15 Kevin Ediger  <kediger@licor.com>
2// test the floating point inserters (facet num_put)
3
4// Copyright (C) 1999-2015 Free Software Foundation, Inc.
5//
6// This file is part of the GNU ISO C++ Library.  This library is free
7// software; you can redistribute it and/or modify it under the
8// terms of the GNU General Public License as published by the
9// Free Software Foundation; either version 3, or (at your option)
10// any later version.
11
12// This library is distributed in the hope that it will be useful,
13// but WITHOUT ANY WARRANTY; without even the implied warranty of
14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15// GNU General Public License for more details.
16
17// You should have received a copy of the GNU General Public License along
18// with this library; see the file COPYING3.  If not see
19// <http://www.gnu.org/licenses/>.
20
21// { dg-do run { xfail lax_strtofp } }
22
23#include <cmath> // for abs
24#include <cfloat> // for DBL_EPSILON
25#include <sstream>
26#include <limits>
27#include <testsuite_hooks.h>
28
29// libstdc++/9151
30void
31test06()
32{
33  using namespace std;
34  bool test __attribute__((unused)) = true;
35
36  int prec = numeric_limits<double>::digits10 + 2;
37  double oval = numeric_limits<double>::min();
38
39  stringstream ostr;
40  ostr.precision(prec);
41  ostr << oval;
42  string sval = ostr.str();
43  istringstream istr (sval);
44  double ival;
45  istr >> ival;
46  VERIFY( abs(oval-ival)/oval < DBL_EPSILON );
47}
48
49int
50main()
51{
52  test06();
53  return 0;
54}
55