libcxx/test/std/numerics/complex.number/complex.special/double_float_explicit.pass.cpp

   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 complex<double>
  12 // {
  13 // public:
  14 //     constexpr complex(const complex<float>&);
  15 // };
  16
  17 #include <complex>
  18 #include <cassert>
  19
  20 #include "test_macros.h"
  21
  22 int main(int, char**)
  23 {
  24     {
  25     const std::complex<float> cd(2.5, 3.5);
  26     std::complex<double> cf(cd);
  27     assert(cf.real() == cd.real());
  28     assert(cf.imag() == cd.imag());
  29     }
  30 #if TEST_STD_VER >= 11
  31     {
  32     constexpr std::complex<float> cd(2.5, 3.5);
  33     constexpr std::complex<double> cf(cd);
  34     static_assert(cf.real() == cd.real(), "");
  35     static_assert(cf.imag() == cd.imag(), "");
  36     }
  37 #endif
  38
  39   return 0;
  40 }