//===----------------------------------------------------------------------===//
//
// 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 <cassert>
#include <complex>
#include "floating_pointer_helpers.h"
#include "test_macros.h"
#include "../cases.h"
template <class T>
TEST_CONSTEXPR_CXX20
bool
test()
{
const std::complex<T> lhs(-4.0, 7.5);
const std::complex<T> rhs(1.5, 2.5);
const std::complex<T> c = lhs / rhs;
assert(is_close(c.real(), T(1.5)));
assert(is_close(c.imag(), T(2.5)));
return true;
}
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:
assert(classify(r) == NaN);
break;
case non_zero:
assert(classify(r) == zero);
break;
case inf:
assert(classify(r) == zero);
break;
case NaN:
assert(classify(r) == NaN);
break;
case non_zero_nan:
assert(classify(r) == NaN);
break;
}
break;
case non_zero:
switch (classification[j]) {
case zero:
assert(classify(r) == inf);
break;
case non_zero:
assert(classify(r) == non_zero);
break;
case inf:
assert(classify(r) == zero);
break;
case NaN:
assert(classify(r) == NaN);
break;
case non_zero_nan:
assert(classify(r) == NaN);
break;
}
break;
case inf:
switch (classification[j]) {
case zero:
assert(classify(r) == inf);
break;
case non_zero:
assert(classify(r) == inf);
break;
case inf:
assert(classify(r) == NaN);
break;
case NaN:
assert(classify(r) == NaN);
break;
case non_zero_nan:
assert(classify(r) == NaN);
break;
}
break;
case NaN:
switch (classification[j]) {
case zero:
assert(classify(r) == NaN);
break;
case non_zero:
assert(classify(r) == NaN);
break;
case inf:
assert(classify(r) == NaN);
break;
case NaN:
assert(classify(r) == NaN);
break;
case non_zero_nan:
assert(classify(r) == NaN);
break;
}
break;
case non_zero_nan:
switch (classification[j]) {
case zero:
assert(classify(r) == inf);
break;
case non_zero:
assert(classify(r) == NaN);
break;
case inf:
assert(classify(r) == NaN);
break;
case NaN:
assert(classify(r) == NaN);
break;
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;
}