libcxx/test/std/numerics/complex.number/complex.ops/scalar_minus_complex.pass.cpp

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <complex>

// template<class T>
//   complex<T>
//   operator-(const T& lhs, const complex<T>& rhs);

#include <complex>
#include <cassert>

template <class T>
void
test(const T& lhs, const std::complex<T>& rhs, std::complex<T> x)
{
    assert(lhs - rhs == x);
}

template <class T>
void
test()
{
    {
    T lhs(1.5);
    std::complex<T> rhs(3.5, 4.5);
    std::complex<T>   x(-2.0, -4.5);
    test(lhs, rhs, x);
    }
    {
    T lhs(1.5);
    std::complex<T> rhs(-3.5, 4.5);
    std::complex<T>   x(5.0, -4.5);
    test(lhs, rhs, x);
    }
}

int main()
{
    test<float>();
    test<double>();
    test<long double>();
}