1 #ifndef __FLOAT 2 #define __FLOAT 3 /* IEEE, default rounding */ 4 5 #define FLT_ROUNDS 1 6 #define FLT_RADIX 2 7 8 #define FLT_DIG 6 9 #define FLT_EPSILON 1.19209290e-07 10 #define FLT_MANT_DIG 24 11 #define FLT_MAX 3.40282347e+38 12 #define FLT_MAX_10_EXP 38 13 #define FLT_MAX_EXP 128 14 #define FLT_MIN 1.17549435e-38 15 #define FLT_MIN_10_EXP -37 16 #define FLT_MIN_EXP -125 17 18 #define DBL_DIG 15 19 #define DBL_EPSILON 2.2204460492503131e-16 20 #define DBL_MANT_DIG 53 21 #define DBL_MAX 1.797693134862315708145e+308 22 #define DBL_MAX_10_EXP 308 23 #define DBL_MAX_EXP 1024 24 #define DBL_MIN 2.225073858507201383090233e-308 25 #define DBL_MIN_10_EXP -307 26 #define DBL_MIN_EXP -1021 27 #define LDBL_MANT_DIG DBL_MANT_DIG 28 #define LDBL_EPSILON DBL_EPSILON 29 #define LDBL_DIG DBL_DIG 30 #define LDBL_MIN_EXP DBL_MIN_EXP 31 #define LDBL_MIN DBL_MIN 32 #define LDBL_MIN_10_EXP DBL_MIN_10_EXP 33 #define LDBL_MAX_EXP DBL_MAX_EXP 34 #define LDBL_MAX DBL_MAX 35 #define LDBL_MAX_10_EXP DBL_MAX_10_EXP 36 37 typedef union FPdbleword FPdbleword; 38 union FPdbleword 39 { 40 double x; 41 struct { /* little endian */ 42 long lo; 43 long hi; 44 }; 45 }; 46 47 #ifdef _RESEARCH_SOURCE 48 /* define stuff needed for floating conversion */ 49 #define IEEE_8087 1 50 #define Sudden_Underflow 1 51 #endif 52 #ifdef _PLAN9_SOURCE 53 /* FCR */ 54 #define FPINEX (1<<5) 55 #define FPOVFL (1<<3) 56 #define FPUNFL ((1<<4)|(1<<1)) 57 #define FPZDIV (1<<2) 58 #define FPRNR (0<<10) 59 #define FPRZ (3<<10) 60 #define FPRPINF (2<<10) 61 #define FPRNINF (1<<10) 62 #define FPRMASK (3<<10) 63 #define FPPEXT (3<<8) 64 #define FPPSGL (0<<8) 65 #define FPPDBL (2<<8) 66 #define FPPMASK (3<<8) 67 /* FSR */ 68 #define FPAINEX FPINEX 69 #define FPAOVFL FPOVFL 70 #define FPAUNFL FPUNFL 71 #define FPAZDIV FPZDIV 72 #endif 73 #endif /* __FLOAT */ 74