1#define FE_INVALID 1 2#define FE_DIVBYZERO 2 3#define FE_OVERFLOW 4 4#define FE_UNDERFLOW 8 5#define FE_INEXACT 16 6#define FE_ALL_EXCEPT 31 7#define FE_TONEAREST 0 8#define FE_DOWNWARD 0x800000 9#define FE_UPWARD 0x400000 10#define FE_TOWARDZERO 0xc00000 11 12typedef unsigned int fexcept_t; 13 14typedef struct { 15 unsigned int __fpcr; 16 unsigned int __fpsr; 17} fenv_t; 18 19#define FE_DFL_ENV ((const fenv_t *) -1) 20