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#define FE_INVALID (1 << 1)
#define FE_DIVBYZERO (1 << 2)
#define FE_OVERFLOW (1 << 3)
#define FE_UNDERFLOW (1 << 4)
#define FE_INEXACT (1 << 5)
#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | FE_INVALID | \
FE_OVERFLOW | FE_UNDERFLOW)
#define FE_TONEAREST 0x00
#define FE_TOWARDZERO 0x01
#define FE_DOWNWARD 0x02
#define FE_UPWARD 0x03
typedef unsigned long fexcept_t;
typedef struct {
unsigned long __cw;
} fenv_t;
#define FE_DFL_ENV ((const fenv_t *) -1)
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