plan9fox/power/include/ape/float.h

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2011-03-30 15:08:40 +00:00
#ifndef __FLOAT
#define __FLOAT
/* IEEE, default rounding */
#define FLT_ROUNDS 1
#define FLT_RADIX 2
#define FLT_DIG 6
#define FLT_EPSILON 1.19209290e-07
#define FLT_MANT_DIG 24
#define FLT_MAX 3.40282347e+38
#define FLT_MAX_10_EXP 38
#define FLT_MAX_EXP 128
#define FLT_MIN 1.17549435e-38
#define FLT_MIN_10_EXP -37
#define FLT_MIN_EXP -125
#define DBL_DIG 15
#define DBL_EPSILON 2.2204460492503131e-16
#define DBL_MANT_DIG 53
#define DBL_MAX 1.797693134862315708145e+308
#define DBL_MAX_10_EXP 308
#define DBL_MAX_EXP 1024
#define DBL_MIN 2.225073858507201383090233e-308
#define DBL_MIN_10_EXP -307
#define DBL_MIN_EXP -1021
#define LDBL_MANT_DIG DBL_MANT_DIG
#define LDBL_EPSILON DBL_EPSILON
#define LDBL_DIG DBL_DIG
#define LDBL_MIN_EXP DBL_MIN_EXP
#define LDBL_MIN DBL_MIN
#define LDBL_MIN_10_EXP DBL_MIN_10_EXP
#define LDBL_MAX_EXP DBL_MAX_EXP
#define LDBL_MAX DBL_MAX
#define LDBL_MAX_10_EXP DBL_MAX_10_EXP
typedef union FPdbleword FPdbleword;
union FPdbleword
{
double x;
struct { /* big endian */
long hi;
long lo;
};
};
#ifdef _RESEARCH_SOURCE
/* define stuff needed for floating conversion */
#define IEEE_MC68k 1
#define Sudden_Underflow 1
#endif
#ifdef _PLAN9_SOURCE
/* FPSCR */
#define FPSFX (1<<31) /* exception summary (sticky) */
#define FPSEX (1<<30) /* enabled exception summary */
#define FPSVX (1<<29) /* invalid operation exception summary */
#define FPSOX (1<<28) /* overflow exception OX (sticky) */
#define FPSUX (1<<27) /* underflow exception UX (sticky) */
#define FPSZX (1<<26) /* zero divide exception ZX (sticky) */
#define FPSXX (1<<25) /* inexact exception XX (sticky) */
#define FPSVXSNAN (1<<24) /* invalid operation exception for SNaN (sticky) */
#define FPSVXISI (1<<23) /* invalid operation exception for ∞-∞ (sticky) */
#define FPSVXIDI (1<<22) /* invalid operation exception for ∞/∞ (sticky) */
#define FPSVXZDZ (1<<21) /* invalid operation exception for 0/0 (sticky) */
#define FPSVXIMZ (1<<20) /* invalid operation exception for ∞*0 (sticky) */
#define FPSVXVC (1<<19) /* invalid operation exception for invalid compare (sticky) */
#define FPSFR (1<<18) /* fraction rounded */
#define FPSFI (1<<17) /* fraction inexact */
#define FPSFPRF (1<<16) /* floating point result class */
#define FPSFPCC (0xF<<12) /* <, >, =, unordered */
#define FPVXCVI (1<<8) /* enable exception for invalid integer convert (sticky) */
#define FPVE (1<<7) /* invalid operation exception enable */
#define FPOVFL (1<<6) /* enable overflow exceptions */
#define FPUNFL (1<<5) /* enable underflow */
#define FPZDIV (1<<4) /* enable zero divide */
#define FPINEX (1<<3) /* enable inexact exceptions */
#define FPRMASK (3<<0) /* rounding mode */
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#define FPRNR (0<<0)
#define FPRZ (1<<0)
#define FPRPINF (2<<0)
#define FPRNINF (3<<0)
#define FPPEXT 0
#define FPPSGL 0
#define FPPDBL 0
#define FPPMASK 0
#define FPINVAL FPVE
#define FPAOVFL FPSOX
#define FPAINEX FPSXX
#define FPAUNFL FPSUX
#define FPAZDIV FPSZX
#define FPAINVAL FPSVX
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#endif
#endif /* __FLOAT */