#define FE_INVALID 16 #define FE_DIVBYZERO 8 #define FE_OVERFLOW 4 #define FE_UNDERFLOW 2 #define FE_INEXACT 1 #define FE_ALL_EXCEPT 31 #define FE_TONEAREST 0 #define FE_DOWNWARD 2 #define FE_UPWARD 3 #define FE_TOWARDZERO 1 typedef unsigned int fexcept_t; typedef unsigned int fenv_t; #define FE_DFL_ENV ((const fenv_t *) -1)