libcxx/test/std/numerics/complex.number/layout.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 #include <complex>
  12 #include <cassert>
  13
  14 #include "test_macros.h"
  15
  16 template <class T>
  17 void
  18 test()
  19 {
  20     std::complex<T> z;
  21     T* a = (T*)&z;
  22     assert(0 == z.real());
  23     assert(0 == z.imag());
  24     assert(a[0] == z.real());
  25     assert(a[1] == z.imag());
  26     a[0] = 5;
  27     a[1] = 6;
  28     assert(a[0] == z.real());
  29     assert(a[1] == z.imag());
  30 }
  31
  32 int main(int, char**)
  33 {
  34     test<float>();
  35     test<double>();
  36     test<long double>();
  37
  38   return 0;
  39 }