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 // tan(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(tan(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 test(std::complex<T>(10000, -10000), std::complex<T>(0, -1)); 34 } 35 36 void test_edges() 37 { 38 typedef std::complex<double> C; 39 const double pi = std::atan2(+0., -0.); 40 const unsigned N = sizeof(x) / sizeof(x[0]); 41 for (unsigned i = 0; i < N; ++i) 42 { 43 std::complex<double> r = tan(x[i]); 44 std::complex<double> t1(-imag(x[i]), real(x[i])); 45 std::complex<double> t2 = tanh(t1); 46 std::complex<double> z(imag(t2), -real(t2)); 47 if (std::isnan(real(r))) 48 assert(std::isnan(real(z))); 49 else 50 { 51 assert(real(r) == real(z)); 52 assert(std::signbit(real(r)) == std::signbit(real(z))); 53 } 54 if (std::isnan(imag(r))) 55 assert(std::isnan(imag(z))); 56 else 57 { 58 assert(imag(r) == imag(z)); 59 assert(std::signbit(imag(r)) == std::signbit(imag(z))); 60 } 61 } 62 } 63 64 int main() 65 { 66 test<float>(); 67 test<double>(); 68 test<long double>(); 69 test_edges(); 70 } 71
