libcxx/test/std/numerics/complex.number/complex.member.ops/minus_equal_scalar.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 // complex& operator-=(const T& rhs);
  12
  13 #include <complex>
  14 #include <cassert>
  15
  16 #include "test_macros.h"
  17
  18 template <class T>
  19 void
  20 test()
  21 {
  22     std::complex<T> c;
  23     assert(c.real() == 0);
  24     assert(c.imag() == 0);
  25     c -= 1.5;
  26     assert(c.real() == -1.5);
  27     assert(c.imag() == 0);
  28     c -= 1.5;
  29     assert(c.real() == -3);
  30     assert(c.imag() == 0);
  31     c -= -1.5;
  32     assert(c.real() == -1.5);
  33     assert(c.imag() == 0);
  34 }
  35
  36 int main(int, char**)
  37 {
  38     test<float>();
  39     test<double>();
  40     test<long double>();
  41
  42   return 0;
  43 }