566c3ca2de
The float.h macros got out of sync with u.h, some of them missing and some of them being incorrect. This change brings them back in line.
95 lines
3 KiB
C
95 lines
3 KiB
C
#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 { /* big endian */
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long hi;
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long lo;
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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_MC68k 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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/* FPSCR */
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#define FPSFX (1<<31) /* exception summary (sticky) */
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#define FPSEX (1<<30) /* enabled exception summary */
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#define FPSVX (1<<29) /* invalid operation exception summary */
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#define FPSOX (1<<28) /* overflow exception OX (sticky) */
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#define FPSUX (1<<27) /* underflow exception UX (sticky) */
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#define FPSZX (1<<26) /* zero divide exception ZX (sticky) */
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#define FPSXX (1<<25) /* inexact exception XX (sticky) */
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#define FPSVXSNAN (1<<24) /* invalid operation exception for SNaN (sticky) */
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#define FPSVXISI (1<<23) /* invalid operation exception for â-â (sticky) */
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#define FPSVXIDI (1<<22) /* invalid operation exception for â/â (sticky) */
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#define FPSVXZDZ (1<<21) /* invalid operation exception for 0/0 (sticky) */
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#define FPSVXIMZ (1<<20) /* invalid operation exception for â*0 (sticky) */
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#define FPSVXVC (1<<19) /* invalid operation exception for invalid compare (sticky) */
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#define FPSFR (1<<18) /* fraction rounded */
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#define FPSFI (1<<17) /* fraction inexact */
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#define FPSFPRF (1<<16) /* floating point result class */
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#define FPSFPCC (0xF<<12) /* <, >, =, unordered */
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#define FPVXCVI (1<<8) /* enable exception for invalid integer convert (sticky) */
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#define FPVE (1<<7) /* invalid operation exception enable */
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#define FPOVFL (1<<6) /* enable overflow exceptions */
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#define FPUNFL (1<<5) /* enable underflow */
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#define FPZDIV (1<<4) /* enable zero divide */
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#define FPINEX (1<<3) /* enable inexact exceptions */
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#define FPRMASK (3<<0) /* rounding mode */
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#define FPRNR (0<<0)
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#define FPRZ (1<<0)
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#define FPRPINF (2<<0)
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#define FPRNINF (3<<0)
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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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#define FPINVAL FPVE
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#define FPAOVFL FPSOX
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#define FPAINEX FPSXX
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#define FPAUNFL FPSUX
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#define FPAZDIV FPSZX
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#define FPAINVAL FPSVX
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#endif
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#endif /* __FLOAT */
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