68 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// <complex>10 11// template<class T>12// complex<T>13// log10(const complex<T>& x);14 15#include <complex>16#include <cassert>17 18#include "test_macros.h"19#include "../cases.h"20 21template <class T>22void23test(const std::complex<T>& c, std::complex<T> x)24{25 assert(log10(c) == x);26}27 28template <class T>29void30test()31{32 test(std::complex<T>(0, 0), std::complex<T>(-INFINITY, 0));33}34 35void 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 else45 {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 else52 {53 assert(imag(r) == imag(z));54 assert(std::signbit(imag(r)) == std::signbit(imag(z)));55 }56 }57}58 59int main(int, char**)60{61 test<float>();62 test<double>();63 test<long double>();64 test_edges();65 66 return 0;67}68