1#define FE_INVALID    (1 << 1)
 2#define FE_DIVBYZERO  (1 << 2)
 3#define FE_OVERFLOW   (1 << 3)
 4#define FE_UNDERFLOW  (1 << 4)
 5#define FE_INEXACT    (1 << 5)
 6#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | FE_INVALID | \
 7                       FE_OVERFLOW | FE_UNDERFLOW)
 8
 9#define FE_TONEAREST  0x00
10#define FE_TOWARDZERO 0x01
11#define FE_DOWNWARD   0x02
12#define FE_UPWARD     0x03
13
14typedef unsigned long fexcept_t;
15
16typedef struct {
17	unsigned long __cw;
18} fenv_t;
19
20#define FE_DFL_ENV      ((const fenv_t *) -1)