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