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// 1999-11-15 Kevin Ediger <kediger@licor.com> // test the floating point inserters (facet num_put) // Copyright (C) 1999, 2002, 2003, 2005, 2009 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING3. If not see // <http://www.gnu.org/licenses/>. #include <cmath> // for abs #include <cfloat> // for DBL_EPSILON #include <sstream> #include <limits> #include <testsuite_hooks.h> void test05() { using namespace std; bool test __attribute__((unused)) = true; double pi = 3.14159265358979323846; ostringstream ostr; ostr.precision(20); ostr << pi; string sval = ostr.str(); istringstream istr (sval); double d; istr >> d; VERIFY( abs(pi-d)/pi < DBL_EPSILON ); } int main() { test05(); return 0; }