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 // UNSUPPORTED: newlib 11 12 // <cfenv> 13 14 #include <cfenv> 15 #include <type_traits> 16 17 #ifndef FE_DIVBYZERO 18 #error FE_DIVBYZERO not defined 19 #endif 20 21 #ifndef FE_INEXACT 22 #error FE_INEXACT not defined 23 #endif 24 25 #ifndef FE_INVALID 26 #error FE_INVALID not defined 27 #endif 28 29 #ifndef FE_OVERFLOW 30 #error FE_OVERFLOW not defined 31 #endif 32 33 #ifndef FE_UNDERFLOW 34 #error FE_UNDERFLOW not defined 35 #endif 36 37 #ifndef FE_ALL_EXCEPT 38 #error FE_ALL_EXCEPT not defined 39 #endif 40 41 #ifndef FE_DOWNWARD 42 #error FE_DOWNWARD not defined 43 #endif 44 45 #ifndef FE_TONEAREST 46 #error FE_TONEAREST not defined 47 #endif 48 49 #ifndef FE_TOWARDZERO 50 #error FE_TOWARDZERO not defined 51 #endif 52 53 #ifndef FE_UPWARD 54 #error FE_UPWARD not defined 55 #endif 56 57 #ifndef FE_DFL_ENV 58 #error FE_DFL_ENV not defined 59 #endif 60 61 int main() 62 { 63 std::fenv_t fenv; 64 std::fexcept_t fex; 65 ((void)fenv); // Prevent unused warning 66 ((void)fex); // Prevent unused warning 67 static_assert((std::is_same<decltype(std::feclearexcept(0)), int>::value), ""); 68 static_assert((std::is_same<decltype(std::fegetexceptflag(&fex, 0)), int>::value), ""); 69 static_assert((std::is_same<decltype(std::feraiseexcept(0)), int>::value), ""); 70 static_assert((std::is_same<decltype(std::fesetexceptflag(&fex, 0)), int>::value), ""); 71 static_assert((std::is_same<decltype(std::fetestexcept(0)), int>::value), ""); 72 static_assert((std::is_same<decltype(std::fegetround()), int>::value), ""); 73 static_assert((std::is_same<decltype(std::fesetround(0)), int>::value), ""); 74 static_assert((std::is_same<decltype(std::fegetenv(&fenv)), int>::value), ""); 75 static_assert((std::is_same<decltype(std::feholdexcept(&fenv)), int>::value), ""); 76 static_assert((std::is_same<decltype(std::fesetenv(&fenv)), int>::value), ""); 77 static_assert((std::is_same<decltype(std::feupdateenv(&fenv)), int>::value), ""); 78 } 79
