external/bsd/libc++/dist/libcxx/test/numerics/complex.number/layout.pass.cpp

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