1// 1999-11-15 Kevin Ediger  <kediger@licor.com>
2// test the floating point inserters (facet num_put)
3
4// Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009
5// Free Software Foundation, Inc.
6//
7// This file is part of the GNU ISO C++ Library.  This library is free
8// software; you can redistribute it and/or modify it under the
9// terms of the GNU General Public License as published by the
10// Free Software Foundation; either version 3, or (at your option)
11// any later version.
12
13// This library is distributed in the hope that it will be useful,
14// but WITHOUT ANY WARRANTY; without even the implied warranty of
15// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16// GNU General Public License for more details.
17
18// You should have received a copy of the GNU General Public License along
19// with this library; see the file COPYING3.  If not see
20// <http://www.gnu.org/licenses/>.
21
22#include <cstdio> // for sprintf
23#include <iostream>
24#include <iomanip>
25#include <sstream>
26#include <limits>
27#include <testsuite_hooks.h>
28
29void
30test02()
31{
32  using namespace std;
33  bool test __attribute__((unused)) = true;
34
35  // make sure we can output a very long float
36  long double val = numeric_limits<long double>::max();
37  int prec = numeric_limits<long double>::digits10;
38
39  ostringstream os;
40  os.precision(prec);
41  os.setf(ios::scientific);
42  os << val;
43
44  char largebuf[512];
45  sprintf(largebuf, "%.*Le", prec, val);
46#ifdef TEST_NUMPUT_VERBOSE
47  cout << "expect: " << largebuf << endl;
48  cout << "result: " << os.str() << endl;
49#endif
50  VERIFY( os && os.str() == largebuf );
51
52  // Make sure we can output a long float in fixed format
53  // without seg-faulting (libstdc++/4402)
54  double val2 = numeric_limits<double>::max();
55
56  ostringstream os2;
57  os2.precision(3);
58  os2.setf(ios::fixed);
59  os2 << val2;
60
61  sprintf(largebuf, "%.*f", 3, val2);
62#ifdef TEST_NUMPUT_VERBOSE
63  cout << "expect: " << largebuf << endl;
64  cout << "result: " << os2.str() << endl;
65#endif
66  VERIFY( os2 && os2.str() == largebuf );
67}
68
69int
70main()
71{
72  test02();
73  return 0;
74}
75