#define FE_INEXACT 4 #define FE_UNDERFLOW 8 #define FE_OVERFLOW 16 #define FE_DIVBYZERO 32 #define FE_INVALID 64 #define FE_ALL_EXCEPT 124 #define FE_TONEAREST 0 #define FE_TOWARDZERO 1 #define FE_UPWARD 2 #define FE_DOWNWARD 3 typedef unsigned short fexcept_t; typedef struct { unsigned __cw; } fenv_t; #define FE_DFL_ENV ((const fenv_t *) -1)