71 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <complex>10 11// template<class T>12// complex<T>13// tan(const complex<T>& x);14 15#include <complex>16#include <cassert>17 18#include "test_macros.h"19#include "../cases.h"20 21template <class T>22void23test(const std::complex<T>& c, std::complex<T> x)24{25 assert(tan(c) == x);26}27 28template <class T>29void30test()31{32 test(std::complex<T>(0, 0), std::complex<T>(0, 0));33 test(std::complex<T>(10000, -10000), std::complex<T>(0, -1));34}35 36void test_edges()37{38 const unsigned N = sizeof(testcases) / sizeof(testcases[0]);39 for (unsigned i = 0; i < N; ++i)40 {41 std::complex<double> r = tan(testcases[i]);42 std::complex<double> t1(-imag(testcases[i]), real(testcases[i]));43 std::complex<double> t2 = tanh(t1);44 std::complex<double> z(imag(t2), -real(t2));45 if (std::isnan(real(r)))46 assert(std::isnan(real(z)));47 else48 {49 assert(real(r) == real(z));50 assert(std::signbit(real(r)) == std::signbit(real(z)));51 }52 if (std::isnan(imag(r)))53 assert(std::isnan(imag(z)));54 else55 {56 assert(imag(r) == imag(z));57 assert(std::signbit(imag(r)) == std::signbit(imag(z)));58 }59 }60}61 62int main(int, char**)63{64 test<float>();65 test<double>();66 test<long double>();67 test_edges();68 69 return 0;70}71