Leaked source code of windows server 2003
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/***
*float.h - constants for floating point values** Copyright (c) 1985-1988, 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]********************************************************************************/
#ifndef NO_EXT_KEYS /* extensions enabled */
#define _CDECL cdecl
#else /* extensions not enabled */
#define _CDECL
#endif /* NO_EXT_KEYS */
#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 0 /* addition rounding: chops */
#define FLT_DIG 6 /* # of decimal digits of precision */
#define FLT_EPSILON 1.192092896e-07 /* 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+38 /* max value */
#define FLT_MAX_10_EXP 38 /* max decimal exponent */
#define FLT_MAX_EXP 128 /* max binary exponent */
#define FLT_MIN 1.175494351e-38 /* 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 0 /* addition rounding: chops */
#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 deimal 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: chops */
/*
* 8087/80287 math control information */
/* User Control Word Mask and bit definitions.
* These definitions match the 8087/80287 */
#define MCW_EM 0x003f /* interrupt Exception Masks */
#define EM_INVALID 0x0001 /* invalid */
#define EM_DENORMAL 0x0002 /* denormal */
#define EM_ZERODIVIDE 0x0004 /* zero divide */
#define EM_OVERFLOW 0x0008 /* overflow */
#define EM_UNDERFLOW 0x0010 /* underflow */
#define EM_INEXACT 0x0020 /* inexact (precision) */
#define MCW_IC 0x1000 /* Infinity Control */
#define IC_AFFINE 0x1000 /* affine */
#define IC_PROJECTIVE 0x0000 /* projective */
#define MCW_RC 0x0c00 /* Rounding Control */
#define RC_CHOP 0x0c00 /* chop */
#define RC_UP 0x0800 /* up */
#define RC_DOWN 0x0400 /* down */
#define RC_NEAR 0x0000 /* near */
#define MCW_PC 0x0300 /* Precision Control */
#define PC_24 0x0000 /* 24 bits */
#define PC_53 0x0200 /* 53 bits */
#define PC_64 0x0300 /* 64 bits */
/* initial Control Word value */
#define CW_DEFAULT ( IC_AFFINE + RC_NEAR + PC_64 + EM_DENORMAL + EM_UNDERFLOW + EM_INEXACT )
/* user Status Word bit definitions */
#define SW_INVALID 0x0001 /* invalid */
#define SW_DENORMAL 0x0002 /* denormal */
#define SW_ZERODIVIDE 0x0004 /* zero divide */
#define SW_OVERFLOW 0x0008 /* overflow */
#define SW_UNDERFLOW 0x0010 /* underflow */
#define SW_INEXACT 0x0020 /* inexact (precision) */
/* 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 ); */
/* function prototypes */
unsigned int _CDECL _clear87(void);unsigned int _CDECL _control87(unsigned int,unsigned int);void _CDECL _fpreset(void);unsigned int _CDECL _status87(void);
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