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 // cosh(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(cosh(c) == x); 26 } 27 28 template <class T> 29 void 30 test() 31 { 32 test(std::complex<T>(0, 0), std::complex<T>(1, 0)); 33 } 34 35 void test_edges() 36 { 37 typedef std::complex<double> C; 38 const double pi = std::atan2(+0., -0.); 39 const unsigned N = sizeof(x) / sizeof(x[0]); 40 for (unsigned i = 0; i < N; ++i) 41 { 42 std::complex<double> r = cosh(x[i]); 43 if (x[i].real() == 0 && x[i].imag() == 0) 44 { 45 assert(r.real() == 1); 46 assert(r.imag() == 0); 47 assert(std::signbit(r.imag()) == std::signbit(x[i].imag())); 48 } 49 else if (x[i].real() == 0 && std::isinf(x[i].imag())) 50 { 51 assert(std::isnan(r.real())); 52 assert(r.imag() == 0); 53 } 54 else if (x[i].real() == 0 && std::isnan(x[i].imag())) 55 { 56 assert(std::isnan(r.real())); 57 assert(r.imag() == 0); 58 } 59 else if (std::isfinite(x[i].real()) && std::isinf(x[i].imag())) 60 { 61 assert(std::isnan(r.real())); 62 assert(std::isnan(r.imag())); 63 } 64 else if (std::isfinite(x[i].real()) && std::isnan(x[i].imag())) 65 { 66 assert(std::isnan(r.real())); 67 assert(std::isnan(r.imag())); 68 } 69 else if (std::isinf(x[i].real()) && x[i].imag() == 0) 70 { 71 assert(std::isinf(r.real())); 72 assert(!std::signbit(r.real())); 73 assert(r.imag() == 0); 74 assert(std::signbit(r.imag()) == std::signbit(x[i].imag())); 75 } 76 else if (std::isinf(x[i].real()) && std::isfinite(x[i].imag())) 77 { 78 assert(std::isinf(r.real())); 79 assert(std::signbit(r.real()) == std::signbit(cos(x[i].imag()))); 80 assert(std::isinf(r.imag())); 81 assert(std::signbit(r.imag()) == std::signbit(x[i].real() * sin(x[i].imag()))); 82 } 83 else if (std::isinf(x[i].real()) && std::isinf(x[i].imag())) 84 { 85 assert(std::isinf(r.real())); 86 assert(std::isnan(r.imag())); 87 } 88 else if (std::isinf(x[i].real()) && std::isnan(x[i].imag())) 89 { 90 assert(std::isinf(r.real())); 91 assert(r.real() > 0); 92 assert(std::isnan(r.imag())); 93 } 94 else if (std::isnan(x[i].real()) && x[i].imag() == 0) 95 { 96 assert(std::isnan(r.real())); 97 assert(r.imag() == 0); 98 } 99 else if (std::isnan(x[i].real()) && std::isfinite(x[i].imag())) 100 { 101 assert(std::isnan(r.real())); 102 assert(std::isnan(r.imag())); 103 } 104 else if (std::isnan(x[i].real()) && std::isnan(x[i].imag())) 105 { 106 assert(std::isnan(r.real())); 107 assert(std::isnan(r.imag())); 108 } 109 } 110 } 111 112 int main() 113 { 114 test<float>(); 115 test<double>(); 116 test<long double>(); 117 test_edges(); 118 } 119
