81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
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#ifndef __FLOAT
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#define __FLOAT
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/* IEEE, default rounding */
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#define FLT_ROUNDS 1
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#define FLT_RADIX 2
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#define FLT_DIG 6
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#define FLT_EPSILON 1.19209290e-07
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#define FLT_MANT_DIG 24
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#define FLT_MAX 3.40282347e+38
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#define FLT_MAX_10_EXP 38
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#define FLT_MAX_EXP 128
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#define FLT_MIN 1.17549435e-38
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#define FLT_MIN_10_EXP -37
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#define FLT_MIN_EXP -125
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#define DBL_DIG 15
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#define DBL_EPSILON 2.2204460492503131e-16
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#define DBL_MANT_DIG 53
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#define DBL_MAX 1.797693134862315708145e+308
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#define DBL_MAX_10_EXP 308
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#define DBL_MAX_EXP 1024
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#define DBL_MIN 2.225073858507201383090233e-308
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#define DBL_MIN_10_EXP -307
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#define DBL_MIN_EXP -1021
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#define LDBL_MANT_DIG DBL_MANT_DIG
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#define LDBL_EPSILON DBL_EPSILON
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#define LDBL_DIG DBL_DIG
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#define LDBL_MIN_EXP DBL_MIN_EXP
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#define LDBL_MIN DBL_MIN
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#define LDBL_MIN_10_EXP DBL_MIN_10_EXP
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#define LDBL_MAX_EXP DBL_MAX_EXP
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#define LDBL_MAX DBL_MAX
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#define LDBL_MAX_10_EXP DBL_MAX_10_EXP
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typedef union FPdbleword FPdbleword;
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union FPdbleword
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{
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double x;
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struct { /* little endian */
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long lo;
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long hi;
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};
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};
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#ifdef _RESEARCH_SOURCE
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/* define stuff needed for floating conversion */
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#define IEEE_8087 1
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#define Sudden_Underflow 1
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#endif
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#ifdef _PLAN9_SOURCE
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/* MXCSR */
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/* fcr */
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#define FPFTZ (1<<15) /* amd64 */
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#define FPINEX (1<<12)
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#define FPUNFL (1<<11)
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#define FPOVFL (1<<10)
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#define FPZDIV (1<<9)
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#define FPDNRM (1<<8) /* amd64 */
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#define FPINVAL (1<<7)
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#define FPDAZ (1<<6) /* amd64 */
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#define FPRNR (0<<13)
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#define FPRZ (3<<13)
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#define FPRPINF (2<<13)
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#define FPRNINF (1<<13)
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#define FPRMASK (3<<13)
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#define FPPEXT 0
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#define FPPSGL 0
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#define FPPDBL 0
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#define FPPMASK 0
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/* fsr */
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#define FPAINEX (1<<5)
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#define FPAUNFL (1<<4)
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#define FPAOVFL (1<<3)
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#define FPAZDIV (1<<2)
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#define FPADNRM (1<<1) /* not in plan 9 */
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#define FPAINVAL (1<<0)
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#endif
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#endif /* __FLOAT */
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