| // 1999-11-15 Kevin Ediger <kediger@licor.com> |
| // test the floating point inserters (facet num_put) |
| |
| // Copyright (C) 1999-2014 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; |
| } |
