1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <fstream>
10 
11 // template <class charT, class traits = char_traits<charT> >
12 // class basic_fstream
13 
14 // explicit basic_fstream(const char* s, ios_base::openmode mode = ios_base::in | ios_base::out);
15 
16 #include <fstream>
17 #include <cassert>
18 #include "test_macros.h"
19 #include "platform_support.h"
20 
21 int main(int, char**)
22 {
23     std::string temp = get_temp_file_name();
24     {
25         std::fstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out
26                                                 | std::ios_base::trunc);
27         double x = 0;
28         fs << 3.25;
29         fs.seekg(0);
30         fs >> x;
31         assert(x == 3.25);
32     }
33     std::remove(temp.c_str());
34 
35 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
36     {
37         std::wfstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out
38                                                  | std::ios_base::trunc);
39         double x = 0;
40         fs << 3.25;
41         fs.seekg(0);
42         fs >> x;
43         assert(x == 3.25);
44     }
45     std::remove(temp.c_str());
46 #endif
47 
48   return 0;
49 }
50