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/* Copyright (c) 1992 NeXT Computer, Inc. All rights reserved. * * File: <ansi/sparc/math.h> */ /* * Constants. */ /*#define HUGE_VAL (__infinity()) /* Produces IEEE Infinity. */*/ #define HUGE_VAL (1e999) #ifndef __STRICT_ANSI__ /*#define HUGE (infinity()) /* For historical compatibility. */*/ #define HUGE HUGE_VAL #define NAN (HUGE/HUGE) /*FIXME: not in sun sources */ /* These values work with any binary representation of integers * where the high-order bit contains the sign. */ /* a number used normally for size of a shift */ #define BITSPERBYTE 8 #define BITS(type) (BITSPERBYTE * (int)sizeof(type)) /* short, regular and long ints with only the high-order bit turned on */ #define HIBITS ((short)(1 << BITS(short) - 1)) #define HIBITI (1 << BITS(int) - 1) #define HIBITL (1L << BITS(long) - 1) /* largest short, regular and long int */ #define MAXSHORT ((short)~HIBITS) #define MAXINT (~HIBITI) #define MAXLONG (~HIBITL) #define MAXCHAR ((char)0x7f) /*FIXME: not in sun sources */ #define MINCHAR ((char)0x80) /*FIXME: not in sun sources */ #define MINSHORT ((short)0x8000) /*FIXME: not in sun sources */ #define MININT ((int)0x80000000) /* max negative 32-bit integer */ /*FIXME: not in sun sources */ #define MINLONG ((long)0x80000000) /*FIXME: not in sun sources */ /* various values that describe the binary floating-point representation * _EXPBASE - the exponent base * DMAXEXP - the maximum exponent of a double (as returned by frexp()) * FMAXEXP - the maximum exponent of a float (as returned by frexp()) * DMINEXP - the minimum exponent of a double (as returned by frexp()) * FMINEXP - the minimum exponent of a float (as returned by frexp()) * MAXDOUBLE - the largest double ((_EXPBASE ** DMAXEXP) * (1 - (_EXPBASE ** -DSIGNIF))) * MAXFLOAT - the largest float ((_EXPBASE ** FMAXEXP) * (1 - (_EXPBASE ** -FSIGNIF))) * MINDOUBLE - the smallest double (_EXPBASE ** (DMINEXP - 1)) * MINFLOAT - the smallest float (_EXPBASE ** (FMINEXP - 1)) * DSIGNIF - the number of significant bits in a double * FSIGNIF - the number of significant bits in a float * DMAXPOWTWO - the largest power of two exactly representable as a double * FMAXPOWTWO - the largest power of two exactly representable as a float * _IEEE - 1 if IEEE standard representation is used * _DEXPLEN - the number of bits for the exponent of a double * _FEXPLEN - the number of bits for the exponent of a float * _HIDDENBIT - 1 if high-significance bit of mantissa is implicit * LN_MAXDOUBLE - the natural log of the largest double -- log(MAXDOUBLE) * LN_MINDOUBLE - the natural log of the smallest double -- log(MINDOUBLE) * LN_MAXFLOAT - the natural log of the largest float * LN_MINFLOAT - the natural log of the smallest float */ #define MAXDOUBLE 1.797693134862315708e+308 #define MAXFLOAT ((float)3.40282346638528860e+38) #define MINDOUBLE 4.94065645841246544e-324 #define MINFLOAT ((float)1.40129846432481707e-45) #define _IEEE 1 #define _DEXPLEN 11 #define _HIDDENBIT 1 #define DMINEXP (-(DMAXEXP + DSIGNIF - _HIDDENBIT - 3)) #define FMINEXP (-(FMAXEXP + FSIGNIF - _HIDDENBIT - 3)) #define LN_MAXFLOAT 8.8722839052068e+01 #define LN_MINFLOAT -1.03278929903432e+02 #define _LENBASE 1 #define _EXPBASE (1 << _LENBASE) #define _FEXPLEN 8 #define DSIGNIF (BITS(double) - _DEXPLEN + _HIDDENBIT - 1) #define FSIGNIF (BITS(float) - _FEXPLEN + _HIDDENBIT - 1) #define DMAXPOWTWO ((double)(1L << BITS(long) - 2) * \ (1L << DSIGNIF - BITS(long) + 1)) #define FMAXPOWTWO ((float)(1L << FSIGNIF - 1)) #define DMAXEXP ((1 << _DEXPLEN - 1) - 1 + _IEEE) #define FMAXEXP ((1 << _FEXPLEN - 1) - 1 + _IEEE) #define LN_MAXDOUBLE (M_LN2 * DMAXEXP) #define LN_MINDOUBLE (M_LN2 * (DMINEXP - 1)) #define M_LN2 0.69314718055994530942 #define M_PI 3.14159265358979323846 #define M_SQRT2 1.41421356237309504880 #define M_E 2.7182818284590452354 #define M_LOG2E 1.4426950408889634074 #define M_LOG10E 0.43429448190325182765 #define M_LN10 2.30258509299404568402 #define M_PI_2 1.57079632679489661923 #define M_PI_4 0.78539816339744830962 #define M_1_PI 0.31830988618379067154 #define M_2_PI 0.63661977236758134308 #define M_2_SQRTPI 1.12837916709551257390 #define M_SQRT1_2 0.70710678118654752440 #endif /* __STRICT_ANSI__ */
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