#define FE_INVALID 1 #define FE_DIVBYZERO 2 #define FE_OVERFLOW 4 #define FE_UNDERFLOW 8 #define FE_INEXACT 16 #define FE_ALL_EXCEPT 31 #define FE_TONEAREST 0 #define FE_DOWNWARD 0x800000 #define FE_UPWARD 0x400000 #define FE_TOWARDZERO 0xc00000 typedef unsigned int fexcept_t; typedef struct { unsigned int __fpcr; unsigned int __fpsr; } fenv_t; #define FE_DFL_ENV ((const fenv_t *) -1)