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- /***
- *float.h - constants for floating point values
- *
- * Copyright (c) 1985-1989, 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 1 /* addition rounding: near */
-
- #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 1 /* addition rounding: near */
-
- #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 */
-
-
- /*
- * 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);
-