1 //===----------------------------------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
14 // atan(const complex<T>& x);
23 test(const std::complex<T>& c, std::complex<T> x)
32 test(std::complex<T>(0, 0), std::complex<T>(0, 0));
37 const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
38 for (unsigned i = 0; i < N; ++i)
40 std::complex<double> r = atan(testcases[i]);
41 std::complex<double> t1(-imag(testcases[i]), real(testcases[i]));
42 std::complex<double> t2 = atanh(t1);
43 std::complex<double> z(imag(t2), -real(t2));
44 if (std::isnan(real(r)))
45 assert(std::isnan(real(z)));
48 assert(real(r) == real(z));
49 assert(std::signbit(real(r)) == std::signbit(real(z)));
51 if (std::isnan(imag(r)))
52 assert(std::isnan(imag(z)));
55 assert(imag(r) == imag(z));
56 assert(std::signbit(imag(r)) == std::signbit(imag(z)));