1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <complex>
11 
12 // template<> class complex<float>
13 // {
14 // public:
15 //     explicit constexpr complex(const complex<double>&);
16 // };
17 
18 #include <complex>
19 #include <cassert>
20 
main()21 int main()
22 {
23     {
24     const std::complex<double> cd(2.5, 3.5);
25     std::complex<float> cf(cd);
26     assert(cf.real() == cd.real());
27     assert(cf.imag() == cd.imag());
28     }
29 #ifndef _LIBCPP_HAS_NO_CONSTEXPR
30     {
31     constexpr std::complex<double> cd(2.5, 3.5);
32     constexpr std::complex<float> cf(cd);
33     static_assert(cf.real() == cd.real(), "");
34     static_assert(cf.imag() == cd.imag(), "");
35     }
36 #endif
37 }
38