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#define FE_TONEAREST 0
#define FE_TOWARDZERO 1
#define FE_UPWARD 2
#define FE_DOWNWARD 3
#define FE_INEXACT 0x00080000
#define FE_UNDERFLOW 0x00100000
#define FE_OVERFLOW 0x00200000
#define FE_DIVBYZERO 0x00400000
#define FE_INVALID 0x00800000
#define FE_ALL_EXCEPT 0x00f80000
typedef unsigned fexcept_t;
typedef unsigned fenv_t;
#define FE_DFL_ENV ((const fenv_t *)-1)
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