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1 | // 1999-11-15 Kevin Ediger <kediger@licor.com> |
2 | // test the floating point inserters (facet num_put) | |
3 | ||
748086b7 | 4 | // Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009 |
e49286bf | 5 | // Free Software Foundation, Inc. |
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6 | // |
7 | // This file is part of the GNU ISO C++ Library. This library is free | |
8 | // software; you can redistribute it and/or modify it under the | |
9 | // terms of the GNU General Public License as published by the | |
748086b7 | 10 | // Free Software Foundation; either version 3, or (at your option) |
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11 | // any later version. |
12 | ||
13 | // This library is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License along | |
748086b7 JJ |
19 | // with this library; see the file COPYING3. If not see |
20 | // <http://www.gnu.org/licenses/>. | |
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21 | |
22 | #include <cstdio> // for sprintf | |
23 | #include <iostream> | |
24 | #include <iomanip> | |
25 | #include <sstream> | |
26 | #include <limits> | |
27 | #include <testsuite_hooks.h> | |
28 | ||
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29 | void |
30 | test02() | |
31 | { | |
ba4b172f | 32 | using namespace std; |
11f10e6b | 33 | bool test __attribute__((unused)) = true; |
ba4b172f | 34 | |
23cac885 | 35 | // make sure we can output a very long float |
e49286bf | 36 | long double val = numeric_limits<long double>::max(); |
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37 | int prec = numeric_limits<long double>::digits10; |
38 | ||
39 | ostringstream os; | |
40 | os.precision(prec); | |
41 | os.setf(ios::scientific); | |
42 | os << val; | |
43 | ||
44 | char largebuf[512]; | |
45 | sprintf(largebuf, "%.*Le", prec, val); | |
46 | #ifdef TEST_NUMPUT_VERBOSE | |
47 | cout << "expect: " << largebuf << endl; | |
48 | cout << "result: " << os.str() << endl; | |
49 | #endif | |
ba4b172f | 50 | VERIFY( os && os.str() == largebuf ); |
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51 | |
52 | // Make sure we can output a long float in fixed format | |
53 | // without seg-faulting (libstdc++/4402) | |
e49286bf | 54 | double val2 = numeric_limits<double>::max(); |
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55 | |
56 | ostringstream os2; | |
57 | os2.precision(3); | |
58 | os2.setf(ios::fixed); | |
59 | os2 << val2; | |
60 | ||
61 | sprintf(largebuf, "%.*f", 3, val2); | |
62 | #ifdef TEST_NUMPUT_VERBOSE | |
63 | cout << "expect: " << largebuf << endl; | |
64 | cout << "result: " << os2.str() << endl; | |
65 | #endif | |
ba4b172f | 66 | VERIFY( os2 && os2.str() == largebuf ); |
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67 | } |
68 | ||
69 | int | |
70 | main() | |
71 | { | |
72 | test02(); | |
73 | return 0; | |
74 | } |