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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <complex> 10 11 // template<class T> 12 // complex<T> 13 // acosh(const complex<T>& x); 14 15 #include <complex> 16 #include <cassert> 17 18 #include "../cases.h" 19 20 template <class T> 21 void 22 test(const std::complex<T>& c, std::complex<T> x) 23 { 24 assert(acosh(c) == x); 25 } 26 27 template <class T> 28 void 29 test() 30 { 31 test(std::complex<T>(INFINITY, 1), std::complex<T>(INFINITY, 0)); 32 } 33 34 void test_edges() 35 { 36 const double pi = std::atan2(+0., -0.); 37 const unsigned N = sizeof(testcases) / sizeof(testcases[0]); 38 for (unsigned i = 0; i < N; ++i) 39 { 40 std::complex<double> r = acosh(testcases[i]); 41 if (testcases[i].real() == 0 && testcases[i].imag() == 0) 42 { 43 assert(!std::signbit(r.real())); 44 if (std::signbit(testcases[i].imag())) 45 is_about(r.imag(), -pi/2); 46 else 47 is_about(r.imag(), pi/2); 48 } 49 else if (testcases[i].real() == 1 && testcases[i].imag() == 0) 50 { 51 assert(r.real() == 0); 52 assert(!std::signbit(r.real())); 53 assert(r.imag() == 0); 54 assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag())); 55 } 56 else if (testcases[i].real() == -1 && testcases[i].imag() == 0) 57 { 58 assert(r.real() == 0); 59 assert(!std::signbit(r.real())); 60 if (std::signbit(testcases[i].imag())) 61 is_about(r.imag(), -pi); 62 else 63 is_about(r.imag(), pi); 64 } 65 else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag())) 66 { 67 assert(std::isinf(r.real())); 68 assert(r.real() > 0); 69 if (std::signbit(testcases[i].imag())) 70 is_about(r.imag(), -pi/2); 71 else 72 is_about(r.imag(), pi/2); 73 } 74 else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag())) 75 { 76 assert(std::isnan(r.real())); 77 assert(std::isnan(r.imag())); 78 } 79 else if (std::isinf(testcases[i].real()) && testcases[i].real() < 0 && std::isfinite(testcases[i].imag())) 80 { 81 assert(std::isinf(r.real())); 82 assert(r.real() > 0); 83 if (std::signbit(testcases[i].imag())) 84 is_about(r.imag(), -pi); 85 else 86 is_about(r.imag(), pi); 87 } 88 else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && std::isfinite(testcases[i].imag())) 89 { 90 assert(std::isinf(r.real())); 91 assert(r.real() > 0); 92 assert(r.imag() == 0); 93 assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag())); 94 } 95 else if (std::isinf(testcases[i].real()) && testcases[i].real() < 0 && std::isinf(testcases[i].imag())) 96 { 97 assert(std::isinf(r.real())); 98 assert(r.real() > 0); 99 if (std::signbit(testcases[i].imag())) 100 is_about(r.imag(), -0.75 * pi); 101 else 102 is_about(r.imag(), 0.75 * pi); 103 } 104 else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && std::isinf(testcases[i].imag())) 105 { 106 assert(std::isinf(r.real())); 107 assert(r.real() > 0); 108 if (std::signbit(testcases[i].imag())) 109 is_about(r.imag(), -0.25 * pi); 110 else 111 is_about(r.imag(), 0.25 * pi); 112 } 113 else if (std::isinf(testcases[i].real()) && std::isnan(testcases[i].imag())) 114 { 115 assert(std::isinf(r.real())); 116 assert(r.real() > 0); 117 assert(std::isnan(r.imag())); 118 } 119 else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag())) 120 { 121 assert(std::isnan(r.real())); 122 assert(std::isnan(r.imag())); 123 } 124 else if (std::isnan(testcases[i].real()) && std::isinf(testcases[i].imag())) 125 { 126 assert(std::isinf(r.real())); 127 assert(r.real() > 0); 128 assert(std::isnan(r.imag())); 129 } 130 else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag())) 131 { 132 assert(std::isnan(r.real())); 133 assert(std::isnan(r.imag())); 134 } 135 else 136 { 137 assert(!std::signbit(r.real())); 138 assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag())); 139 } 140 } 141 } 142 143 int main(int, char**) 144 { 145 test<float>(); 146 test<double>(); 147 test<long double>(); 148 test_edges(); 149 150 return 0; 151 } 152