pow.pass.cpp
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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<Arithmetic T, Arithmetic U>
// complex<promote<T, U>::type>
// pow(const T& x, const complex<U>& y);
// template<Arithmetic T, Arithmetic U>
// complex<promote<T, U>::type>
// pow(const complex<T>& x, const U& y);
// template<Arithmetic T, Arithmetic U>
// complex<promote<T, U>::type>
// pow(const complex<T>& x, const complex<U>& y);
#include <complex>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
#include "../cases.h"
template <class T>
double
promote(T, typename std::enable_if<std::is_integral<T>::value>::type* = 0);
float promote(float);
double promote(double);
long double promote(long double);
template <class T, class U>
void
test(T x, const std::complex<U>& y)
{
typedef decltype(promote(x)+promote(real(y))) V;
static_assert((std::is_same<decltype(std::pow(x, y)), std::complex<V> >::value), "");
assert(std::pow(x, y) == pow(std::complex<V>(x, 0), std::complex<V>(y)));
}
template <class T, class U>
void
test(const std::complex<T>& x, U y)
{
typedef decltype(promote(real(x))+promote(y)) V;
static_assert((std::is_same<decltype(std::pow(x, y)), std::complex<V> >::value), "");
assert(std::pow(x, y) == pow(std::complex<V>(x), std::complex<V>(y, 0)));
}
template <class T, class U>
void
test(const std::complex<T>& x, const std::complex<U>& y)
{
typedef decltype(promote(real(x))+promote(real(y))) V;
static_assert((std::is_same<decltype(std::pow(x, y)), std::complex<V> >::value), "");
assert(std::pow(x, y) == pow(std::complex<V>(x), std::complex<V>(y)));
}
template <class T, class U>
void
test(typename std::enable_if<std::is_integral<T>::value>::type* = 0, typename std::enable_if<!std::is_integral<U>::value>::type* = 0)
{
test(T(3), std::complex<U>(4, 5));
test(std::complex<U>(3, 4), T(5));
}
template <class T, class U>
void
test(typename std::enable_if<!std::is_integral<T>::value>::type* = 0, typename std::enable_if<!std::is_integral<U>::value>::type* = 0)
{
test(T(3), std::complex<U>(4, 5));
test(std::complex<T>(3, 4), U(5));
test(std::complex<T>(3, 4), std::complex<U>(5, 6));
}
int main(int, char**)
{
test<int, float>();
test<int, double>();
test<int, long double>();
test<unsigned, float>();
test<unsigned, double>();
test<unsigned, long double>();
test<long long, float>();
test<long long, double>();
test<long long, long double>();
test<float, double>();
test<float, long double>();
test<double, float>();
test<double, long double>();
test<long double, float>();
test<long double, double>();
return 0;
}