1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <complex> 11 12 // template<class T> 13 // complex<T> 14 // tanh(const complex<T>& x); 15 16 #include <complex> 17 #include <cassert> 18 19 #include "../cases.h" 20 21 template <class T> 22 void 23 test(const std::complex<T>& c, std::complex<T> x) 24 { 25 assert(tanh(c) == x); 26 } 27 28 template <class T> 29 void 30 test() 31 { 32 test(std::complex<T>(0, 0), std::complex<T>(0, 0)); 33 } 34 35 void test_edges() 36 { 37 const unsigned N = sizeof(testcases) / sizeof(testcases[0]); 38 for (unsigned i = 0; i < N; ++i) 39 { 40 std::complex<double> r = tanh(testcases[i]); 41 if (testcases[i].real() == 0 && testcases[i].imag() == 0) 42 { 43 assert(r.real() == 0); 44 assert(std::signbit(r.real()) == std::signbit(testcases[i].real())); 45 assert(r.imag() == 0); 46 assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag())); 47 } 48 else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag())) 49 { 50 assert(std::isnan(r.real())); 51 assert(std::isnan(r.imag())); 52 } 53 else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag())) 54 { 55 assert(std::isnan(r.real())); 56 assert(std::isnan(r.imag())); 57 } 58 else if (std::isinf(testcases[i].real()) && std::isfinite(testcases[i].imag())) 59 { 60 assert(r.real() == 1); 61 assert(r.imag() == 0); 62 assert(std::signbit(r.imag()) == std::signbit(sin(2*testcases[i].imag()))); 63 } 64 else if (std::isinf(testcases[i].real()) && std::isinf(testcases[i].imag())) 65 { 66 assert(r.real() == 1); 67 assert(r.imag() == 0); 68 } 69 else if (std::isinf(testcases[i].real()) && std::isnan(testcases[i].imag())) 70 { 71 assert(r.real() == 1); 72 assert(r.imag() == 0); 73 } 74 else if (std::isnan(testcases[i].real()) && testcases[i].imag() == 0) 75 { 76 assert(std::isnan(r.real())); 77 assert(r.imag() == 0); 78 assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag())); 79 } 80 else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag())) 81 { 82 assert(std::isnan(r.real())); 83 assert(std::isnan(r.imag())); 84 } 85 else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag())) 86 { 87 assert(std::isnan(r.real())); 88 assert(std::isnan(r.imag())); 89 } 90 } 91 } 92 93 int main() 94 { 95 test<float>(); 96 test<double>(); 97 test<long double>(); 98 test_edges(); 99 } 100
