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1 | // 1999-11-15 Kevin Ediger <kediger@licor.com> |
2 | // test the floating point inserters (facet num_put) | |
b2dad0e3 | 3 | |
a945c346 | 4 | // Copyright (C) 1999-2024 Free Software Foundation, Inc. |
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5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
748086b7 | 9 | // Free Software Foundation; either version 3, or (at your option) |
b2dad0e3 BK |
10 | // any later version. |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
748086b7 JJ |
18 | // with this library; see the file COPYING3. If not see |
19 | // <http://www.gnu.org/licenses/>. | |
b2dad0e3 | 20 | |
a5ea7a0b RS |
21 | // { dg-do run { xfail lax_strtofp } } |
22 | ||
23cac885 BK |
23 | #include <cmath> // for abs |
24 | #include <cfloat> // for DBL_EPSILON | |
b2dad0e3 | 25 | #include <sstream> |
23cac885 | 26 | #include <limits> |
fe413112 | 27 | #include <testsuite_hooks.h> |
b2dad0e3 | 28 | |
23cac885 | 29 | // libstdc++/9151 |
ba4b172f | 30 | void |
23cac885 | 31 | test06() |
b2dad0e3 | 32 | { |
ba4b172f | 33 | using namespace std; |
ba4b172f | 34 | |
23cac885 BK |
35 | int prec = numeric_limits<double>::digits10 + 2; |
36 | double oval = numeric_limits<double>::min(); | |
37 | ||
38 | stringstream ostr; | |
39 | ostr.precision(prec); | |
40 | ostr << oval; | |
41 | string sval = ostr.str(); | |
42 | istringstream istr (sval); | |
43 | double ival; | |
44 | istr >> ival; | |
45 | VERIFY( abs(oval-ival)/oval < DBL_EPSILON ); | |
23cac885 | 46 | } |
b2dad0e3 | 47 | |
23cac885 BK |
48 | int |
49 | main() | |
b2dad0e3 | 50 | { |
23cac885 | 51 | test06(); |
04d930e6 | 52 | return 0; |
b2dad0e3 | 53 | } |