1#define FE_INVALID 1 2#define __FE_DENORM 2 3#define FE_DIVBYZERO 4 4#define FE_OVERFLOW 8 5#define FE_UNDERFLOW 16 6#define FE_INEXACT 32 7 8#define FE_ALL_EXCEPT 63 9 10#define FE_TONEAREST 0 11#define FE_DOWNWARD 0x400 12#define FE_UPWARD 0x800 13#define FE_TOWARDZERO 0xc00 14 15typedef unsigned short fexcept_t; 16 17typedef struct { 18 unsigned short __control_word; 19 unsigned short __unused1; 20 unsigned short __status_word; 21 unsigned short __unused2; 22 unsigned short __tags; 23 unsigned short __unused3; 24 unsigned int __eip; 25 unsigned short __cs_selector; 26 unsigned int __opcode:11; 27 unsigned int __unused4:5; 28 unsigned int __data_offset; 29 unsigned short __data_selector; 30 unsigned short __unused5; 31} fenv_t; 32 33#define FE_DFL_ENV ((const fenv_t *) -1) 34