libcxx/test/std/numerics/complex.number/complex.ops/scalar_divide_complex.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 T>
  12 //   complex<T>
  13 //   operator/(const T& lhs, const complex<T>& rhs); // constexpr in C++20
  14
  15 #include <complex>
  16 #include <cassert>
  17
  18 #include "test_macros.h"
  19
  20 template <class T>
  21 TEST_CONSTEXPR_CXX20
  22 bool
  23 test()
  24 {
  25     const T lhs(-8.5);
  26     const std::complex<T> rhs(1.5, 2.5);
  27     const std::complex<T> c = lhs / rhs;
  28     assert(c.real() >= T(-1.500000000000001));
  29     assert(c.real() <= T(-1.499999999999999));
  30     assert(c.imag() >= T(2.499999999999999));
  31     assert(c.imag() <= T(2.500000000000001));
  32     return true;
  33 }
  34
  35 int main(int, char**)
  36 {
  37     test<float>();
  38     test<double>();
  39     test<long double>();
  40
  41 #if TEST_STD_VER > 17
  42     static_assert(test<float>());
  43     static_assert(test<double>());
  44     static_assert(test<long double>());
  45 #endif
  46
  47   return 0;
  48 }