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1 | // { dg-require-swprintf "" } | |
2 | ||
3 | // Copyright (C) 2005-2024 Free Software Foundation, Inc. | |
4 | // | |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
8 | // Free Software Foundation; either version 3, or (at your option) | |
9 | // any later version. | |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
16 | // You should have received a copy of the GNU General Public License along | |
17 | // with this library; see the file COPYING3. If not see | |
18 | // <http://www.gnu.org/licenses/>. | |
19 | ||
20 | #include <cstdio> // for swprintf | |
21 | #include <iostream> | |
22 | #include <iomanip> | |
23 | #include <sstream> | |
24 | #include <limits> | |
25 | #include <testsuite_hooks.h> | |
26 | ||
27 | void | |
28 | test02() | |
29 | { | |
30 | using namespace std; | |
31 | ||
32 | // make sure we can output a very long float | |
33 | long double val = numeric_limits<long double>::max(); | |
34 | int prec = numeric_limits<long double>::digits10; | |
35 | ||
36 | wostringstream os; | |
37 | os.precision(prec); | |
38 | os.setf(wios::scientific); | |
39 | os << val; | |
40 | ||
41 | wchar_t largebuf[512]; | |
42 | swprintf(largebuf, 512, L"%.*Le", prec, val); | |
43 | #ifdef TEST_NUMPUT_VERBOSE | |
44 | wcout << "expect: " << largebuf << endl; | |
45 | wcout << "result: " << os.str() << endl; | |
46 | #endif | |
47 | VERIFY( os && os.str() == largebuf ); | |
48 | ||
49 | // Make sure we can output a long float in fixed format | |
50 | // without seg-faulting (libstdc++/4402) | |
51 | double val2 = numeric_limits<double>::max(); | |
52 | ||
53 | wostringstream os2; | |
54 | os2.precision(3); | |
55 | os2.setf(wios::fixed); | |
56 | os2 << val2; | |
57 | ||
58 | swprintf(largebuf, 512, L"%.*f", 3, val2); | |
59 | #ifdef TEST_NUMPUT_VERBOSE | |
60 | wcout << "expect: " << largebuf << endl; | |
61 | wcout << "result: " << os2.str() << endl; | |
62 | #endif | |
63 | VERIFY( os2 && os2.str() == largebuf ); | |
64 | } | |
65 | ||
66 | int | |
67 | main() | |
68 | { | |
69 | test02(); | |
70 | return 0; | |
71 | } |