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 // <cmath> 11 12 // isnan 13 14 // XFAIL: linux 15 16 #include <cmath> 17 #include <type_traits> 18 #include <cassert> 19 20 int main() 21 { 22 #ifdef isnan 23 #error isnan defined 24 #endif 25 static_assert((std::is_same<decltype(std::isnan((float)0)), bool>::value), ""); 26 static_assert((std::is_same<decltype(std::isnan((double)0)), bool>::value), ""); 27 static_assert((std::is_same<decltype(std::isnan(0)), bool>::value), ""); 28 static_assert((std::is_same<decltype(std::isnan((long double)0)), bool>::value), ""); 29 assert(std::isnan(-1.0) == false); 30 } 31
