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<Arithmetic T> 13 // T 14 // imag(const T& x); 15 16 #include <complex> 17 #include <type_traits> 18 #include <cassert> 19 20 #include "test_macros.h" 21 #include "../cases.h" 22 23 template <class T, int x> 24 void 25 test(typename std::enable_if<std::is_integral<T>::value>::type* = 0) 26 { 27 static_assert((std::is_same<decltype(std::imag(T(x))), double>::value), ""); 28 assert(std::imag(x) == 0); 29 #if TEST_STD_VER > 11 30 constexpr T val {x}; 31 static_assert(std::imag(val) == 0, ""); 32 constexpr std::complex<T> t{val, val}; 33 static_assert(t.imag() == x, "" ); 34 #endif 35 } 36 37 template <class T, int x> 38 void 39 test(typename std::enable_if<!std::is_integral<T>::value>::type* = 0) 40 { 41 static_assert((std::is_same<decltype(std::imag(T(x))), T>::value), ""); 42 assert(std::imag(x) == 0); 43 #if TEST_STD_VER > 11 44 constexpr T val {x}; 45 static_assert(std::imag(val) == 0, ""); 46 constexpr std::complex<T> t{val, val}; 47 static_assert(t.imag() == x, "" ); 48 #endif 49 } 50 51 template <class T> 52 void 53 test() 54 { 55 test<T, 0>(); 56 test<T, 1>(); 57 test<T, 10>(); 58 } 59 60 int main() 61 { 62 test<float>(); 63 test<double>(); 64 test<long double>(); 65 test<int>(); 66 test<unsigned>(); 67 test<long long>(); 68 } 69
