363 lines
10 KiB
C
363 lines
10 KiB
C
/***
|
|
*float.h - constants for floating point values
|
|
*
|
|
* Copyright (c) 1985-1995, Microsoft Corporation. All rights reserved.
|
|
*
|
|
*Purpose:
|
|
* This file contains defines for a number of implementation dependent
|
|
* values which are commonly used by sophisticated numerical (floating
|
|
* point) programs.
|
|
* [ANSI]
|
|
*
|
|
* [Public]
|
|
*
|
|
****/
|
|
|
|
#if _MSC_VER > 1000
|
|
#pragma once
|
|
#endif
|
|
|
|
#ifndef _INC_FLOAT
|
|
#define _INC_FLOAT
|
|
|
|
#if !defined(_WIN32) && !defined(_MAC)
|
|
#error ERROR: Only Mac or Win32 targets supported!
|
|
#endif
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
/* Define _CRTAPI1 (for compatibility with the NT SDK) */
|
|
|
|
#ifndef _CRTAPI1
|
|
#if _MSC_VER >= 800 && _M_IX86 >= 300
|
|
#define _CRTAPI1 __cdecl
|
|
#else
|
|
#define _CRTAPI1
|
|
#endif
|
|
#endif
|
|
|
|
|
|
/* Define _CRTAPI2 (for compatibility with the NT SDK) */
|
|
|
|
#ifndef _CRTAPI2
|
|
#if _MSC_VER >= 800 && _M_IX86 >= 300
|
|
#define _CRTAPI2 __cdecl
|
|
#else
|
|
#define _CRTAPI2
|
|
#endif
|
|
#endif
|
|
|
|
|
|
/* Define _CRTIMP */
|
|
|
|
#ifndef _CRTIMP
|
|
#ifdef _NTSDK
|
|
/* definition compatible with NT SDK */
|
|
#define _CRTIMP
|
|
#else /* ndef _NTSDK */
|
|
/* current definition */
|
|
#ifdef _DLL
|
|
#define _CRTIMP __declspec(dllimport)
|
|
#else /* ndef _DLL */
|
|
#define _CRTIMP
|
|
#endif /* _DLL */
|
|
#endif /* _NTSDK */
|
|
#endif /* _CRTIMP */
|
|
|
|
|
|
/* Define __cdecl for non-Microsoft compilers */
|
|
|
|
#if ( !defined(_MSC_VER) && !defined(__cdecl) )
|
|
#define __cdecl
|
|
#endif
|
|
|
|
#define DBL_DIG 15 /* # of decimal digits of precision */
|
|
#define DBL_EPSILON 2.2204460492503131e-016 /* smallest such that 1.0+DBL_EPSILON != 1.0 */
|
|
#define DBL_MANT_DIG 53 /* # of bits in mantissa */
|
|
#define DBL_MAX 1.7976931348623158e+308 /* max value */
|
|
#define DBL_MAX_10_EXP 308 /* max decimal exponent */
|
|
#define DBL_MAX_EXP 1024 /* max binary exponent */
|
|
#define DBL_MIN 2.2250738585072014e-308 /* min positive value */
|
|
#define DBL_MIN_10_EXP (-307) /* min decimal exponent */
|
|
#define DBL_MIN_EXP (-1021) /* min binary exponent */
|
|
#define _DBL_RADIX 2 /* exponent radix */
|
|
#define _DBL_ROUNDS 1 /* addition rounding: near */
|
|
|
|
#define FLT_DIG 6 /* # of decimal digits of precision */
|
|
#define FLT_EPSILON 1.192092896e-07F /* smallest such that 1.0+FLT_EPSILON != 1.0 */
|
|
#define FLT_GUARD 0
|
|
#define FLT_MANT_DIG 24 /* # of bits in mantissa */
|
|
#define FLT_MAX 3.402823466e+38F /* max value */
|
|
#define FLT_MAX_10_EXP 38 /* max decimal exponent */
|
|
#define FLT_MAX_EXP 128 /* max binary exponent */
|
|
#define FLT_MIN 1.175494351e-38F /* min positive value */
|
|
#define FLT_MIN_10_EXP (-37) /* min decimal exponent */
|
|
#define FLT_MIN_EXP (-125) /* min binary exponent */
|
|
#define FLT_NORMALIZE 0
|
|
#define FLT_RADIX 2 /* exponent radix */
|
|
#define FLT_ROUNDS 1 /* addition rounding: near */
|
|
|
|
#ifndef _M_M68K
|
|
#define LDBL_DIG DBL_DIG /* # of decimal digits of precision */
|
|
#define LDBL_EPSILON DBL_EPSILON /* smallest such that 1.0+LDBL_EPSILON != 1.0 */
|
|
#define LDBL_MANT_DIG DBL_MANT_DIG /* # of bits in mantissa */
|
|
#define LDBL_MAX DBL_MAX /* max value */
|
|
#define LDBL_MAX_10_EXP DBL_MAX_10_EXP /* max decimal exponent */
|
|
#define LDBL_MAX_EXP DBL_MAX_EXP /* max binary exponent */
|
|
#define LDBL_MIN DBL_MIN /* min positive value */
|
|
#define LDBL_MIN_10_EXP DBL_MIN_10_EXP /* min decimal exponent */
|
|
#define LDBL_MIN_EXP DBL_MIN_EXP /* min binary exponent */
|
|
#define _LDBL_RADIX DBL_RADIX /* exponent radix */
|
|
#define _LDBL_ROUNDS DBL_ROUNDS /* addition rounding: near */
|
|
#else
|
|
#define LDBL_DIG 18 /* # of decimal digits of precision */
|
|
#define LDBL_EPSILON 1.08420217248550443412e-019L /* smallest such that 1.0+LDBL_EPSILON != 1.0 */
|
|
#define LDBL_MANT_DIG 64 /* # of bits in mantissa */
|
|
#define LDBL_MAX 1.189731495357231765e+4932L /* max value */
|
|
#define LDBL_MAX_10_EXP 4932 /* max decimal exponent */
|
|
#define LDBL_MAX_EXP 16384 /* max binary exponent */
|
|
#define LDBL_MIN 3.3621031431120935063e-4932L /* min positive value */
|
|
#define LDBL_MIN_10_EXP (-4931) /* min decimal exponent */
|
|
#define LDBL_MIN_EXP (-16381) /* min binary exponent */
|
|
#define _LDBL_RADIX 2 /* exponent radix */
|
|
#define _LDBL_ROUNDS 1 /* addition rounding: near */
|
|
#endif
|
|
|
|
/* Function prototypes */
|
|
|
|
_CRTIMP unsigned int __cdecl _clearfp(void);
|
|
_CRTIMP unsigned int __cdecl _controlfp(unsigned int,unsigned int);
|
|
_CRTIMP unsigned int __cdecl _statusfp(void);
|
|
_CRTIMP void __cdecl _fpreset(void);
|
|
|
|
#ifndef _MAC
|
|
#define _clear87 _clearfp
|
|
#define _status87 _statusfp
|
|
#endif /* _MAC */
|
|
|
|
/*
|
|
* Abstract User Control Word Mask and bit definitions
|
|
*/
|
|
#if !defined(_M_MPPC) && !defined(_M_M68K)
|
|
#define _MCW_EM 0x0008001f /* interrupt Exception Masks */
|
|
#else
|
|
#define _MCW_EM 0x0000001f /* interrupt Exception Masks */
|
|
#endif
|
|
#define _EM_INEXACT 0x00000001 /* inexact (precision) */
|
|
#define _EM_UNDERFLOW 0x00000002 /* underflow */
|
|
#define _EM_OVERFLOW 0x00000004 /* overflow */
|
|
#define _EM_ZERODIVIDE 0x00000008 /* zero divide */
|
|
#define _EM_INVALID 0x00000010 /* invalid */
|
|
|
|
#define _MCW_RC 0x00000300 /* Rounding Control */
|
|
#define _RC_NEAR 0x00000000 /* near */
|
|
#define _RC_DOWN 0x00000100 /* down */
|
|
#define _RC_UP 0x00000200 /* up */
|
|
#define _RC_CHOP 0x00000300 /* chop */
|
|
|
|
/*
|
|
* Abstract User Status Word bit definitions
|
|
*/
|
|
|
|
#define _SW_INEXACT 0x00000001 /* inexact (precision) */
|
|
#define _SW_UNDERFLOW 0x00000002 /* underflow */
|
|
#define _SW_OVERFLOW 0x00000004 /* overflow */
|
|
#define _SW_ZERODIVIDE 0x00000008 /* zero divide */
|
|
#define _SW_INVALID 0x00000010 /* invalid */
|
|
|
|
|
|
/*
|
|
* i386 specific definitions
|
|
*/
|
|
#define _MCW_PC 0x00030000 /* Precision Control */
|
|
#if defined(_M_MPPC)
|
|
/*
|
|
* PowerMac specific definitions(no precision control)
|
|
*/
|
|
#define _PC_64 0x00000000 /* 64 bits */
|
|
#define _PC_53 0x00000000 /* 53 bits */
|
|
#define _PC_24 0x00000000 /* 24 bits */
|
|
#else
|
|
#define _PC_64 0x00000000 /* 64 bits */
|
|
#define _PC_53 0x00010000 /* 53 bits */
|
|
#define _PC_24 0x00020000 /* 24 bits */
|
|
#endif
|
|
|
|
#define _MCW_IC 0x00040000 /* Infinity Control */
|
|
#define _IC_AFFINE 0x00040000 /* affine */
|
|
#define _IC_PROJECTIVE 0x00000000 /* projective */
|
|
|
|
#define _EM_DENORMAL 0x00080000 /* denormal exception mask (_control87 only) */
|
|
|
|
#define _SW_DENORMAL 0x00080000 /* denormal status bit */
|
|
|
|
|
|
_CRTIMP unsigned int __cdecl _control87(unsigned int,unsigned int);
|
|
|
|
|
|
/*
|
|
* MIPS R4000 specific definitions
|
|
*/
|
|
|
|
#define _MCW_DN 0x01000000 /* Denormal Control (R4000) */
|
|
#define _DN_FLUSH 0x01000000 /* flush to zero */
|
|
#define _DN_SAVE 0x00000000 /* save */
|
|
|
|
|
|
/* initial Control Word value */
|
|
|
|
#if defined(_M_IX86)
|
|
|
|
#define _CW_DEFAULT ( _RC_NEAR + _PC_53 + _EM_INVALID + _EM_ZERODIVIDE + _EM_OVERFLOW + _EM_UNDERFLOW + _EM_INEXACT + _EM_DENORMAL)
|
|
|
|
#elif defined(_M_M68K) || defined(_M_MPPC)
|
|
|
|
#define _CW_DEFAULT ( _RC_NEAR + _PC_64 + _EM_INVALID + _EM_ZERODIVIDE + _EM_OVERFLOW + _EM_UNDERFLOW + _EM_INEXACT )
|
|
|
|
#elif defined(_M_MRX000) || defined (_M_ALPHA) || defined(_M_PPC)
|
|
|
|
#define _CW_DEFAULT ( _RC_NEAR + _DN_FLUSH + _EM_INVALID + _EM_ZERODIVIDE + _EM_OVERFLOW + _EM_UNDERFLOW + _EM_INEXACT )
|
|
|
|
#endif
|
|
|
|
/* Global variable holding floating point error code */
|
|
|
|
#if defined(_MT) || defined(_DLL)
|
|
_CRTIMP extern int * __cdecl __fpecode(void);
|
|
#define _fpecode (*__fpecode())
|
|
#else /* ndef _MT && ndef _DLL */
|
|
extern int _fpecode;
|
|
#endif /* _MT || _DLL */
|
|
|
|
/* invalid subconditions (_SW_INVALID also set) */
|
|
|
|
#define _SW_UNEMULATED 0x0040 /* unemulated instruction */
|
|
#define _SW_SQRTNEG 0x0080 /* square root of a neg number */
|
|
#define _SW_STACKOVERFLOW 0x0200 /* FP stack overflow */
|
|
#define _SW_STACKUNDERFLOW 0x0400 /* FP stack underflow */
|
|
|
|
/* Floating point error signals and return codes */
|
|
|
|
#define _FPE_INVALID 0x81
|
|
#define _FPE_DENORMAL 0x82
|
|
#define _FPE_ZERODIVIDE 0x83
|
|
#define _FPE_OVERFLOW 0x84
|
|
#define _FPE_UNDERFLOW 0x85
|
|
#define _FPE_INEXACT 0x86
|
|
|
|
#define _FPE_UNEMULATED 0x87
|
|
#define _FPE_SQRTNEG 0x88
|
|
#define _FPE_STACKOVERFLOW 0x8a
|
|
#define _FPE_STACKUNDERFLOW 0x8b
|
|
|
|
#define _FPE_EXPLICITGEN 0x8c /* raise( SIGFPE ); */
|
|
|
|
|
|
/* IEEE recommended functions */
|
|
|
|
_CRTIMP double __cdecl _copysign (double, double);
|
|
_CRTIMP double __cdecl _chgsign (double);
|
|
_CRTIMP double __cdecl _scalb(double, long);
|
|
_CRTIMP double __cdecl _logb(double);
|
|
_CRTIMP double __cdecl _nextafter(double, double);
|
|
_CRTIMP int __cdecl _finite(double);
|
|
_CRTIMP int __cdecl _isnan(double);
|
|
_CRTIMP int __cdecl _fpclass(double);
|
|
|
|
#define _FPCLASS_SNAN 0x0001 /* signaling NaN */
|
|
#define _FPCLASS_QNAN 0x0002 /* quiet NaN */
|
|
#define _FPCLASS_NINF 0x0004 /* negative infinity */
|
|
#define _FPCLASS_NN 0x0008 /* negative normal */
|
|
#define _FPCLASS_ND 0x0010 /* negative denormal */
|
|
#define _FPCLASS_NZ 0x0020 /* -0 */
|
|
#define _FPCLASS_PZ 0x0040 /* +0 */
|
|
#define _FPCLASS_PD 0x0080 /* positive denormal */
|
|
#define _FPCLASS_PN 0x0100 /* positive normal */
|
|
#define _FPCLASS_PINF 0x0200 /* positive infinity */
|
|
|
|
|
|
#if !__STDC__
|
|
|
|
/* Non-ANSI names for compatibility */
|
|
|
|
#ifndef _MAC
|
|
#define clear87 _clear87
|
|
#define status87 _status87
|
|
#define control87 _control87
|
|
#endif /* _MAC */
|
|
|
|
#ifdef _NTSDK
|
|
#define fpreset _fpreset
|
|
#else /* ndef _NTSDK */
|
|
_CRTIMP void __cdecl fpreset(void);
|
|
#endif /* _NTSDK */
|
|
|
|
#define DBL_RADIX _DBL_RADIX
|
|
#define DBL_ROUNDS _DBL_ROUNDS
|
|
|
|
#define LDBL_RADIX _LDBL_RADIX
|
|
#define LDBL_ROUNDS _LDBL_ROUNDS
|
|
|
|
#define MCW_EM _MCW_EM
|
|
#define EM_INVALID _EM_INVALID
|
|
#define EM_DENORMAL _EM_DENORMAL
|
|
#define EM_ZERODIVIDE _EM_ZERODIVIDE
|
|
#define EM_OVERFLOW _EM_OVERFLOW
|
|
#define EM_UNDERFLOW _EM_UNDERFLOW
|
|
#define EM_INEXACT _EM_INEXACT
|
|
|
|
#define MCW_IC _MCW_IC
|
|
#define IC_AFFINE _IC_AFFINE
|
|
#define IC_PROJECTIVE _IC_PROJECTIVE
|
|
|
|
#define MCW_RC _MCW_RC
|
|
#define RC_CHOP _RC_CHOP
|
|
#define RC_UP _RC_UP
|
|
#define RC_DOWN _RC_DOWN
|
|
#define RC_NEAR _RC_NEAR
|
|
|
|
#define MCW_PC _MCW_PC
|
|
#define PC_24 _PC_24
|
|
#define PC_53 _PC_53
|
|
#define PC_64 _PC_64
|
|
|
|
#define CW_DEFAULT _CW_DEFAULT
|
|
|
|
#define SW_INVALID _SW_INVALID
|
|
#define SW_DENORMAL _SW_DENORMAL
|
|
#define SW_ZERODIVIDE _SW_ZERODIVIDE
|
|
#define SW_OVERFLOW _SW_OVERFLOW
|
|
#define SW_UNDERFLOW _SW_UNDERFLOW
|
|
#define SW_INEXACT _SW_INEXACT
|
|
|
|
#define SW_UNEMULATED _SW_UNEMULATED
|
|
#define SW_SQRTNEG _SW_SQRTNEG
|
|
#define SW_STACKOVERFLOW _SW_STACKOVERFLOW
|
|
#define SW_STACKUNDERFLOW _SW_STACKUNDERFLOW
|
|
|
|
#define FPE_INVALID _FPE_INVALID
|
|
#define FPE_DENORMAL _FPE_DENORMAL
|
|
#define FPE_ZERODIVIDE _FPE_ZERODIVIDE
|
|
#define FPE_OVERFLOW _FPE_OVERFLOW
|
|
#define FPE_UNDERFLOW _FPE_UNDERFLOW
|
|
#define FPE_INEXACT _FPE_INEXACT
|
|
|
|
#define FPE_UNEMULATED _FPE_UNEMULATED
|
|
#define FPE_SQRTNEG _FPE_SQRTNEG
|
|
#define FPE_STACKOVERFLOW _FPE_STACKOVERFLOW
|
|
#define FPE_STACKUNDERFLOW _FPE_STACKUNDERFLOW
|
|
|
|
#define FPE_EXPLICITGEN _FPE_EXPLICITGEN
|
|
|
|
#endif /* __STDC__ */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _INC_FLOAT */
|