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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <complex>
// template<class T>
// complex<T>
// operator*(const complex<T>& lhs, const complex<T>& rhs); // constexpr in C++20
// ADDITIONAL_COMPILE_FLAGS(has-fconstexpr-steps): -fconstexpr-steps=2000000
#include <complex>
#include <cassert>
#include "test_macros.h"
#include "../cases.h"
template <class T>
TEST_CONSTEXPR_CXX20
bool
test()
{
const std::complex<T> lhs(1.5, 2.5);
const std::complex<T> rhs(1.5, 2.5);
assert(lhs * rhs == std::complex<T>(-4.0, 7.5));
return true;
}
// test edges
TEST_CONSTEXPR_CXX20 bool test_edges()
{
const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
int classification[N];
for (unsigned i=0; i < N; ++i)
classification[i] = classify(testcases[i]);
for (unsigned i = 0; i < N; ++i)
{
for (unsigned j = 0; j < N; ++j)
{
std::complex<double> r = testcases[i] * testcases[j];
switch (classification[i])
{
case zero:
switch (classification[j])
{
case zero:
case non_zero:
assert(classify(r) == zero);
break;
case inf:
case NaN:
case non_zero_nan:
assert(classify(r) == NaN);
break;
}
break;
case non_zero:
switch (classification[j])
{
case zero:
assert(classify(r) == zero);
break;
case non_zero:
assert(classify(r) == non_zero);
break;
case inf:
assert(classify(r) == inf);
break;
case NaN:
case non_zero_nan:
assert(classify(r) == NaN);
break;
}
break;
case inf:
switch (classification[j])
{
case zero:
case NaN:
assert(classify(r) == NaN);
break;
case non_zero:
case inf:
case non_zero_nan:
assert(classify(r) == inf);
break;
}
break;
case NaN:
assert(classify(r) == NaN);
break;
case non_zero_nan:
switch (classification[j])
{
case inf:
assert(classify(r) == inf);
break;
case zero:
case non_zero:
case NaN:
case non_zero_nan:
assert(classify(r) == NaN);
break;
}
break;
}
}
}
return true;
}
int main(int, char**)
{
test<float>();
test<double>();
test<long double>();
test_edges();
#if TEST_STD_VER > 17
static_assert(test<float>());
static_assert(test<double>());
static_assert(test<long double>());
static_assert(test_edges());
#endif
return 0;
}
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