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