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//===----------------------------------------------------------------------===//
//
// 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<Arithmetic T>
// T
// arg(T x);
#include <complex>
#include <type_traits>
#include <cassert>
#include "../cases.h"
template <class T>
void
test(T x, typename std::enable_if<std::is_integral<T>::value>::type* = 0)
{
static_assert((std::is_same<decltype(std::arg(x)), double>::value), "");
assert(std::arg(x) == arg(std::complex<double>(static_cast<double>(x), 0)));
}
template <class T>
void
test(T x, typename std::enable_if<!std::is_integral<T>::value>::type* = 0)
{
static_assert((std::is_same<decltype(std::arg(x)), T>::value), "");
assert(std::arg(x) == arg(std::complex<T>(x, 0)));
}
template <class T>
void
test()
{
test<T>(0);
test<T>(1);
test<T>(10);
}
int main()
{
test<float>();
test<double>();
test<long double>();
test<int>();
test<unsigned>();
test<long long>();
}
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