276 lines
8.6 KiB
C
276 lines
8.6 KiB
C
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/*
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* float.h/cfloat Floating point functions
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*
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* =========================================================================
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*
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* Open Watcom Project
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*
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* Copyright (c) 2002-2010 Open Watcom Contributors. All Rights Reserved.
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* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*
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* This file is automatically generated. Do not edit directly.
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*
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* =========================================================================
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*/
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#ifndef _FLOAT_H_INCLUDED
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#define _FLOAT_H_INCLUDED
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#ifndef _ENABLE_AUTODEPEND
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#pragma read_only_file;
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#endif
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#ifndef _COMDEF_H_INCLUDED
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#include <_comdef.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef NULL
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#ifdef __cplusplus
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#if !defined(_M_I86) || defined(__SMALL__) || defined(__MEDIUM__)
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#define NULL 0
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#else
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#define NULL 0L
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#endif
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#else
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#define NULL ((void *)0)
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#endif
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#endif
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#define FLT_NORMALIZE 0
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#define FLT_RADIX 2
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#define FLT_ROUNDS 1 /* round to nearest */
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#define _DBL_RADIX 2
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#define _DBL_ROUNDS 1
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#define _LDBL_RADIX _DBL_RADIX
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#define _LDBL_ROUNDS _DBL_ROUNDS
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#if !defined(NO_EXT_KEYS) /* extensions enabled */
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#define DBL_RADIX _DBL_RADIX
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#define DBL_ROUNDS _DBL_ROUNDS
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#define LDBL_RADIX _DBL_RADIX
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#define LDBL_ROUNDS _DBL_ROUNDS
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#endif /* extensions enabled */
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/* number of base-FLT_RADIX digits in the floating-point mantissa */
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#define FLT_MANT_DIG 24
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#define DBL_MANT_DIG 53
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#define LDBL_MANT_DIG 53
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/* number of decimal digits of precision */
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#define FLT_DIG 6
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#define DBL_DIG 15
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#define LDBL_DIG 15
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/* decimal digits needed to accurately represent any floating-point value */
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#define DECIMAL_DIG 17
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/* minimum negative integer such that FLT_RADIX raised to that power minus 1
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is a normalized floating-point number */
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#define FLT_MIN_EXP (-125)
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#define DBL_MIN_EXP (-1021)
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#define LDBL_MIN_EXP (-1021)
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/* minimum negative integer such that 10 raised to that power is in the
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range of normalized floating-point numbers */
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#define FLT_MIN_10_EXP (-37)
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#define DBL_MIN_10_EXP (-307)
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#define LDBL_MIN_10_EXP (-307)
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/* maximum integer such that FLT_RADIX raised to that power minus 1 is a
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representable floating-point number */
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#define FLT_MAX_EXP 128
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#define DBL_MAX_EXP 1024
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#define LDBL_MAX_EXP 1024
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/* maximum integer such that 10 raised to that power is in the range of
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representable floating-point numbers */
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#define FLT_MAX_10_EXP 38
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#define DBL_MAX_10_EXP 308
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#define LDBL_MAX_10_EXP 308
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/* maximum representable floating-point number */
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#define FLT_MAX 3.402823466e+38f
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#define DBL_MAX 1.7976931348623157e+308
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#define LDBL_MAX DBL_MAX
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/* minimum positive floating-point number x such that 1.0 + x != 1.0 */
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#define FLT_EPSILON 1.192092896e-7f
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#define DBL_EPSILON 2.2204460492503131e-16
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#define LDBL_EPSILON DBL_EPSILON
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/* minimum representable positive floating-point number */
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#define FLT_MIN 1.175494351e-38f
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#define DBL_MIN 2.2250738585072014e-308
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#define LDBL_MIN DBL_MIN
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/*
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* 8087/80287/80387 math co-processor control information
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*/
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/* 80(x)87 Control Word Mask and bit definitions. */
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#define _MCW_EM 0x003f /* Interrupt Exception Masks */
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#define _EM_INVALID 0x0001 /* invalid */
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#define _EM_DENORMAL 0x0002 /* denormal */
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#define _EM_ZERODIVIDE 0x0004 /* zero divide */
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#define _EM_OVERFLOW 0x0008 /* overflow */
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#define _EM_UNDERFLOW 0x0010 /* underflow */
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#define _EM_INEXACT 0x0020 /* inexact result - precision */
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#define _MCW_IC 0x1000 /* Infinity Control */
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#define _IC_AFFINE 0x1000 /* affine */
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#define _IC_PROJECTIVE 0x0000 /* projective */
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#define _MCW_RC 0x0c00 /* Rounding Control */
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#define _RC_NEAR 0x0000 /* near */
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#define _RC_DOWN 0x0400 /* down */
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#define _RC_UP 0x0800 /* up */
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#define _RC_CHOP 0x0c00 /* chop */
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#define _MCW_PC 0x0300 /* Precision Control */
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#define _PC_24 0x0000 /* 24 bits */
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#define _PC_53 0x0200 /* 53 bits */
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#define _PC_64 0x0300 /* 64 bits */
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/* initial Control Word value */
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#define _CW_DEFAULT (_IC_AFFINE | _RC_NEAR | _PC_53 \
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| _EM_INVALID | _EM_DENORMAL | _EM_ZERODIVIDE \
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| _EM_OVERFLOW | _EM_UNDERFLOW | _EM_INEXACT)
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/* 80(x)87 Status Word bit definitions */
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#define _SW_INVALID 0x0001 /* invalid */
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#define _SW_DENORMAL 0x0002 /* denormal */
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#define _SW_ZERODIVIDE 0x0004 /* zero divide */
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#define _SW_OVERFLOW 0x0008 /* overflow */
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#define _SW_UNDERFLOW 0x0010 /* underflow */
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#define _SW_INEXACT 0x0020 /* inexact (precision) */
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/* the following are generated by software */
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#define _SW_UNEMULATED 0x0040 /* unemulated instruction */
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/* invalid subconditions (_SW_INVALID also set) */
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#define _SW_SQRTNEG 0x0080 /* square root of a neg number */
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#define _SW_STACKOVERFLOW 0x0200 /* FP stack overflow */
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#define _SW_STACKUNDERFLOW 0x0400 /* FP stack underflow */
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/* Floating-point error codes */
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#define _FPE_INVALID 0x81
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#define _FPE_DENORMAL 0x82
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#define _FPE_ZERODIVIDE 0x83
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#define _FPE_OVERFLOW 0x84
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#define _FPE_UNDERFLOW 0x85
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#define _FPE_INEXACT 0x86
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#define _FPE_UNEMULATED 0x87
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#define _FPE_SQRTNEG 0x88
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#define _FPE_STACKOVERFLOW 0x8a
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#define _FPE_STACKUNDERFLOW 0x8b
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#define _FPE_EXPLICITGEN 0x8c
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#define _FPE_IOVERFLOW 0x8d /* issued on fist(p) when value is too
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large to be represented as integer */
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#define _FPE_LOGERR 0x8e
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#define _FPE_MODERR 0x8f
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#if !defined(NO_EXT_KEYS) /* extensions enabled */
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/*
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* 8087/80287/80387 math co-processor control information
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*/
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/* 80(x)87 Control Word Mask and bit definitions. */
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#define MCW_EM _MCW_EM
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#define EM_INVALID _EM_INVALID
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#define EM_DENORMAL _EM_DENORMAL
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#define EM_ZERODIVIDE _EM_ZERODIVIDE
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#define EM_OVERFLOW _EM_OVERFLOW
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#define EM_UNDERFLOW _EM_UNDERFLOW
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#define EM_INEXACT _EM_INEXACT
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#define EM_PRECISION _EM_INEXACT /* WATCOM's name */
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#define MCW_IC _MCW_IC
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#define IC_AFFINE _IC_AFFINE
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#define IC_PROJECTIVE _IC_PROJECTIVE
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#define MCW_RC _MCW_RC
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#define RC_NEAR _RC_NEAR
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#define RC_DOWN _RC_DOWN
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#define RC_UP _RC_UP
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#define RC_CHOP _RC_CHOP
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#define MCW_PC _MCW_PC
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#define PC_24 _PC_24
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#define PC_53 _PC_53
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#define PC_64 _PC_64
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/* 80(x)87 Status Word bit definitions */
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#define SW_INVALID _SW_INVALID
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#define SW_DENORMAL _SW_DENORMAL
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#define SW_ZERODIVIDE _SW_ZERODIVIDE
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#define SW_OVERFLOW _SW_OVERFLOW
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#define SW_UNDERFLOW _SW_UNDERFLOW
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#define SW_INEXACT _SW_INEXACT
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/* the following are generated by software */
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#define SW_UNEMULATED _SW_UNEMULATED
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#define SW_SQRTNEG _SW_SQRTNEG
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#define SW_STACKOVERFLOW _SW_STACKOVERFLOW
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#define SW_STACKUNDERFLOW _SW_STACKUNDERFLOW
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/* Floating-point error codes */
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#define FPE_INVALID _FPE_INVALID
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#define FPE_DENORMAL _FPE_DENORMAL
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#define FPE_ZERODIVIDE _FPE_ZERODIVIDE
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#define FPE_OVERFLOW _FPE_OVERFLOW
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#define FPE_UNDERFLOW _FPE_UNDERFLOW
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#define FPE_INEXACT _FPE_INEXACT
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#define FPE_UNEMULATED _FPE_UNEMULATED
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#define FPE_SQRTNEG _FPE_SQRTNEG
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#define FPE_STACKOVERFLOW _FPE_STACKOVERFLOW
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#define FPE_STACKUNDERFLOW _FPE_STACKUNDERFLOW
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#define FPE_EXPLICITGEN _FPE_EXPLICITGEN
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#define FPE_IOVERFLOW _FPE_IOVERFLOW
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#define FPE_LOGERR _FPE_LOGERR
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#define FPE_MODERR _FPE_MODERR
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_WMRTLINK extern unsigned _clear87(void);
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_WCRTLINK extern unsigned _control87(unsigned,unsigned);
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_WCRTLINK extern unsigned _controlfp(unsigned,unsigned);
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_WCRTLINK extern void _fpreset(void);
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_WMRTLINK extern unsigned _status87(void);
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_WMRTLINK extern int _finite(double);
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/* Floating-point Infinity and NaN constants */
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_WMRTDATA extern const float __f_infinity;
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_WMRTDATA extern const float __f_posqnan;
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_WMRTDATA extern const double __d_infinity;
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_WMRTDATA extern const double __d_posqnan;
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_WMRTDATA extern const long double __ld_infinity;
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_WMRTDATA extern const long double __ld_posqnan;
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#define _INFF __f_infinity
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#define _INFINITYF __f_infinity
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#define _INF __d_infinity
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#define _INFINITY __d_infinity
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#define _INFL __ld_infinity
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#define _INFINITYL __ld_infinity
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#define _NANF __f_posqnan
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#define _NAN __d_posqnan
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#define _NANL __ld_posqnan
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#endif /* extensions enabled */
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif
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