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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <complex>
// template<class T>
// complex<T>
// polar(const T& rho, const T& theta = 0);
#include <complex>
#include <cassert>
#include "../cases.h"
template <class T>
void
test(const T& rho, std::complex<T> x)
{
assert(std::polar(rho) == x);
}
template <class T>
void
test(const T& rho, const T& theta, std::complex<T> x)
{
assert(std::polar(rho, theta) == x);
}
template <class T>
void
test()
{
test(T(0), std::complex<T>(0, 0));
test(T(1), std::complex<T>(1, 0));
test(T(100), std::complex<T>(100, 0));
test(T(0), T(0), std::complex<T>(0, 0));
test(T(1), T(0), std::complex<T>(1, 0));
test(T(100), T(0), std::complex<T>(100, 0));
}
void test_edges()
{
const unsigned N = sizeof(x) / sizeof(x[0]);
for (unsigned i = 0; i < N; ++i)
{
double r = real(x[i]);
double theta = imag(x[i]);
std::complex<double> z = std::polar(r, theta);
switch (classify(r))
{
case zero:
if (std::signbit(r) || classify(theta) == inf || classify(theta) == NaN)
{
int c = classify(z);
assert(c == NaN || c == non_zero_nan);
}
else
{
assert(z == std::complex<double>());
}
break;
case non_zero:
if (std::signbit(r) || classify(theta) == inf || classify(theta) == NaN)
{
int c = classify(z);
assert(c == NaN || c == non_zero_nan);
}
else
{
is_about(std::abs(z), r);
}
break;
case inf:
if (r < 0)
{
int c = classify(z);
assert(c == NaN || c == non_zero_nan);
}
else
{
assert(classify(z) == inf);
if (classify(theta) != NaN && classify(theta) != inf)
{
assert(classify(real(z)) != NaN);
assert(classify(imag(z)) != NaN);
}
}
break;
case NaN:
case non_zero_nan:
{
int c = classify(z);
assert(c == NaN || c == non_zero_nan);
}
break;
}
}
}
int main()
{
test<float>();
test<double>();
test<long double>();
test_edges();
}
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