libcxx/test/std/numerics/complex.number/complex/bit_cast.pass.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++03, c++11, c++14, c++17

// Make sure that std::bit_cast works with std::complex. Test case extracted from https://llvm.org/PR94620.

#include <bit>
#include <complex>

template <class T>
constexpr void test() {
  using Complex                       = std::complex<T>;
  unsigned char data[sizeof(Complex)] = {0};

  [[maybe_unused]] Complex c = std::bit_cast<Complex>(data);
}

constexpr bool test_all() {
  test<float>();
  test<double>();
  test<long double>();
  return true;
}

int main(int, char**) {
  test_all();
  static_assert(test_all());
  return 0;
}