1 #define FE_TONEAREST 0 2 #define FE_TOWARDZERO 1 3 #define FE_UPWARD 2 4 #define FE_DOWNWARD 3 5 6 #define FE_INEXACT 0x02000000 7 #define FE_DIVBYZERO 0x04000000 8 #define FE_UNDERFLOW 0x08000000 9 #define FE_OVERFLOW 0x10000000 10 #define FE_INVALID 0x20000000 11 12 #define FE_ALL_EXCEPT 0x3e000000 13 14 #ifdef _GNU_SOURCE 15 #define FE_INVALID_SNAN 0x01000000 16 #define FE_INVALID_ISI 0x00800000 17 #define FE_INVALID_IDI 0x00400000 18 #define FE_INVALID_ZDZ 0x00200000 19 #define FE_INVALID_IMZ 0x00100000 20 #define FE_INVALID_COMPARE 0x00080000 21 #define FE_INVALID_SOFTWARE 0x00000400 22 #define FE_INVALID_SQRT 0x00000200 23 #define FE_INVALID_INTEGER_CONVERSION 0x00000100 24 25 #define FE_ALL_INVALID 0x01f80700 26 #endif 27 28 typedef unsigned fexcept_t; 29 typedef double fenv_t; 30 31 #define FE_DFL_ENV ((const fenv_t *)-1) 32