| // 1999-11-15 Kevin Ediger <kediger@licor.com> |
| // test the floating point inserters (facet num_put) |
| |
| // Copyright (C) 1999, 2002, 2003, 2005 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 2, 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 COPYING. If not, write to the Free |
| // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| // USA. |
| |
| #include <cmath> // for abs |
| #include <cfloat> // for DBL_EPSILON |
| #include <sstream> |
| #include <limits> |
| #include <testsuite_hooks.h> |
| |
| // libstdc++/9151 |
| void |
| test06() |
| { |
| using namespace std; |
| bool test __attribute__((unused)) = true; |
| |
| int prec = numeric_limits<double>::digits10 + 2; |
| double oval = numeric_limits<double>::min(); |
| |
| stringstream ostr; |
| ostr.precision(prec); |
| ostr << oval; |
| string sval = ostr.str(); |
| istringstream istr (sval); |
| double ival; |
| istr >> ival; |
| VERIFY( abs(oval-ival)/oval < DBL_EPSILON ); |
| } |
| |
| int |
| main() |
| { |
| test06(); |
| return 0; |
| } |
