66 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// T13// norm(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()24{25 std::complex<T> z(3, 4);26 assert(norm(z) == 25);27}28 29void test_edges()30{31 const unsigned N = sizeof(testcases) / sizeof(testcases[0]);32 for (unsigned i = 0; i < N; ++i)33 {34 double r = norm(testcases[i]);35 switch (classify(testcases[i]))36 {37 case zero:38 assert(r == 0);39 assert(!std::signbit(r));40 break;41 case non_zero:42 assert(std::isfinite(r) && r > 0);43 break;44 case inf:45 assert(std::isinf(r) && r > 0);46 break;47 case NaN:48 assert(std::isnan(r));49 break;50 case non_zero_nan:51 assert(std::isnan(r));52 break;53 }54 }55}56 57int main(int, char**)58{59 test<float>();60 test<double>();61 test<long double>();62 test_edges();63 64 return 0;65}66