115 lines
5.5 KiB
C
115 lines
5.5 KiB
C
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/* Release 3.00 */
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/*-------------------------------------------------------------------------*
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* *
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* float.h - Implementation specific macros for floating point. *
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* *
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* COPYRIGHT (C) 1989, 1990 Jensen and Partners. All Rights Reserved. *
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* *
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*--------------------------------------------------------------------------*/
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#include <stdepoc.h>
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#ifndef _FLOAT_INC_
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#define _FLOAT_INC_
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#define DBL_DIG 15 /* number of decimal digits of precision */
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#define DBL_MANT_DIG 53 /* number of bits in mantissa */
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#define DBL_MAX_10_EXP 308 /* maximum decimal exponent */
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#define DBL_MAX_EXP 1024 /* maximum binary exponent */
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#define DBL_MIN_10_EXP -307 /* minimum decimal exponent */
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#define DBL_MIN_EXP -1021 /* minimum binary exponent */
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#define DBL_RADIX 2 /* exponent radix */
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#define DBL_ROUNDS 1 /* addition rounding */
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#define DBL_EPSILON 2.2204460492503131e-016 /* 1.0+DBL_EPSILON != 1.0 */
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#define DBL_MAX 1.7976931348623151e+308 /* maximum value */
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#define DBL_MIN 2.2250738585072014e-308 /* minimum positive value */
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#define FLT_DIG 6 /* number of decimal digits of precision */
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#define FLT_GUARD 0
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#define FLT_MANT_DIG 24 /* number of bits in mantissa */
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#define FLT_MAX_10_EXP 38 /* maximum decimal exponent */
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#define FLT_MAX_EXP 128 /* maximum binary exponent */
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#define FLT_MIN_10_EXP -37 /* minimum decimal exponent */
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#define FLT_MIN_EXP -125 /* minimum binary exponent */
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#define FLT_NORMALIZE 0
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#define FLT_RADIX 2 /* exponent radix */
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#define FLT_ROUNDS 1 /* addition rounding chops */
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#define FLT_EPSILON 1.192092896e-07 /* smallest such that 1.0+FLT_EPSILON != 1.0 */
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#define FLT_MAX 3.402823466e+38 /* maximum value */
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#define FLT_MIN 1.175494351e-38 /* minimum positive value */
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#define LDBL_DIG 19 /* number of decimal digits of precision */
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#define LDBL_EPSILON 5.4210108624275221706e-20 /* smallest such that 1.0+LDBL_EPSILON != 1.0 */
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#define LDBL_MANT_DIG 64 /* number of bits in mantissa */
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#define LDBL_MAX 1.189731495357231765e+4932L /* maximum value */
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#define LDBL_MAX_10_EXP 4932 /* maximum decimal exponent */
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#define LDBL_MAX_EXP 16384 /* maximum binary exponent */
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#define LDBL_MIN 3.3621031431120935063e-4932L /* minimum positive value */
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#define LDBL_MIN_10_EXP (-4931) /* minimum deimal exponent */
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#define LDBL_MIN_EXP (-16381) /* minimum binary exponent */
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#define LDBL_RADIX 2 /* exponent radix */
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#define LDBL_ROUNDS DBL_ROUNDS /* addition rounding */
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/* X087 math control information */
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/* 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 */
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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_CHOP 0x0c00 /* chop */
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#define RC_UP 0x0800 /* up */
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#define RC_DOWN 0x0400 /* down */
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#define RC_NEAR 0x0000 /* near */
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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_64 + EM_DENORMAL + EM_UNDERFLOW + EM_INEXACT )
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/* user 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 /* precision inexact */
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/* Floating point error signals */
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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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/* X087 control function prototypes */
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern unsigned int _clear87(void);
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extern unsigned int _control87(unsigned int _new, unsigned int _mask);
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extern void _fpreset(void);
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extern unsigned int _status87(void);
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#ifdef __cplusplus
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}
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#endif
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#endif
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