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 // log10(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(log10(c) == x); 26 } 27 28 template <class T> 29 void 30 test() 31 { 32 test(std::complex<T>(0, 0), std::complex<T>(-INFINITY, 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 = log10(testcases[i]); 41 std::complex<double> z = log(testcases[i])/std::log(10); 42 if (std::isnan(real(r))) 43 assert(std::isnan(real(z))); 44 else 45 { 46 assert(real(r) == real(z)); 47 assert(std::signbit(real(r)) == std::signbit(real(z))); 48 } 49 if (std::isnan(imag(r))) 50 assert(std::isnan(imag(z))); 51 else 52 { 53 assert(imag(r) == imag(z)); 54 assert(std::signbit(imag(r)) == std::signbit(imag(z))); 55 } 56 } 57 } 58 59 int main() 60 { 61 test<float>(); 62 test<double>(); 63 test<long double>(); 64 test_edges(); 65 } 66
