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 // <complex>
10 
11 // template<class T, class charT, class traits>
12 //   basic_ostream<charT, traits>&
13 //   operator<<(basic_ostream<charT, traits>& o, const complex<T>& x);
14 
15 #include <complex>
16 #include <sstream>
17 #include <cassert>
18 
19 #include "test_macros.h"
20 
21 int main(int, char**)
22 {
23     {
24         std::complex<double> c(1, 2);
25         std::ostringstream os;
26         os << c;
27         assert(os.str() == "(1,2)");
28     }
29     {
30         std::complex<double> c(1, 2);
31         std::ostringstream os;
32         os.width(8);
33         os.fill('_');
34         os << c;
35         assert(os.str() == "___(1,2)");
36     }
37 
38   return 0;
39 }
40