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- /* float.h - 8087 control function prototypes
- * $Version: 1.2 $
- * Copyright (c) 1988-91 Intel Corporation, ALL RIGHTS RESERVED.
- */
-
- #ifndef _floath
- #define _floath
- /*lint -library */
-
- #define DBL_DIG 15 /* maximum decimal digits of double precision */
- #define DBL_EPSILON 2.2204460492503131e-16
- #define DBL_MANT_DIG 53
- #define DBL_MAX 1.7976931348623157e+308
- #define DBL_MAX_10_EXP 308
- #define DBL_MAX_EXP 1024
- #define DBL_MIN 2.2250738585072014e-308
- #define DBL_MIN_10_EXP (-307)
- #define DBL_MIN_EXP (-1021)
- #define DBL_RADIX 2 /* Radix of the floating-point number */
- /* e.g., a binary machine */
- #define DBL_ROUNDS 1
-
- #define FLT_DIG 6 /* maximum decimal digits of float precision */
- #define FLT_EPSILON 1.19209290e-7F
- #define FLT_MANT_DIG 24
- #define FLT_MAX 3.40282347e+38F
- #define FLT_MAX_10_EXP 38
- #define FLT_MAX_EXP 128
- #define FLT_MIN 1.17549435e-38F
- #define FLT_MIN_10_EXP (-37)
- #define FLT_MIN_EXP (-125)
- #define FLT_RADIX 2 /* radix of the floating point number */
- /* e.g. a binary machine */
- #define FLT_ROUNDS 1 /* 1 == round to nearest */
-
-
- /*****************************************************************************
- ** These values are full IEEE/ANSI defined, but are not supported under iC386.
- ** Since Long Double is not supported under iC386, these values will be
- ** defined as the same as DBL, above.
- ******************************************************************************/
- #if 0
- #define LDBL_DIG 18 /* max decimal digits of long double precisn */
- #define LDBL_EPSILON 1.08420217248550443401e-19L
- #define LDBL_MANT_DIG 64
- #define LDBL_MAX 1.18973149535723176502e+4932L
- #define LDBL_MAX_10_EXP 4932
- #define LDBL_MAX_EXP 16384
- #define LDBL_MIN 3.36210314311209350626e-4932L /* relatively close */
- #define LDBL_MIN_10_EXP (-4931)
- #define LDBL_MIN_EXP (-16381)
- #define LDBL_RADIX 2 /* Radix of the floating-point number */
- /* e.g., a binary machine */
- #define LDBL_ROUNDS 1
-
-
- #else
-
- #define LDBL_DIG DBL_DIG
- #define LDBL_EPSILON DBL_EPSILON
- #define LDBL_MANT_DIG DBL_MANT_DIG
- #define LDBL_MAX DBL_MAX
- #define LDBL_MAX_10_EXP DBL_MAX_10_EXP
- #define LDBL_MAX_EXP DBL_MAX_EXP
- #define LDBL_MIN DBL_MIN
- #define LDBL_MIN_10_EXP DBL_MIN_10_EXP
- #define LDBL_MIN_EXP DBL_MIN_EXP
- #define LDBL_RADIX 2 /* Radix of the floating-point number */
- /* e.g., a binary machine */
- #define LDBL_ROUNDS 1
-
-
- #endif
-
- /*
- * Numeric coprocessor configuration constants:
- */
- #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 */
-
- #define CW_DEFAULT (IC_AFFINE + RC_NEAR + PC_64 + EM_INVALID + EM_DENORMAL + \
- EM_ZERODIVIDE + EM_OVERFLOW + EM_UNDERFLOW + EM_INEXACT)
-
- /*
- * User status word:
- */
- #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) */
- #define SW_UNEMULATED 0x0040 /* Unemulated instruction */
- #define SW_SQRTNEG 0x0080 /* Square root of a neg number */
- #define SW_STACKOVERFLOW 0x0200 /* Floating-point stack overflow */
- #define SW_STACKUNDERFLOW 0x0400 /* Floating-point 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:
- */
-
- #ifndef _87_functions
- #define _87_functions
- unsigned int _control87(unsigned int, unsigned int);
- void _fpreset(void);
- #endif
-
- #endif /* _floath */
-