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Diffstat (limited to 'newlib/libc/stdlib/mprec.h')
| -rw-r--r-- | newlib/libc/stdlib/mprec.h | 313 |
1 files changed, 0 insertions, 313 deletions
diff --git a/newlib/libc/stdlib/mprec.h b/newlib/libc/stdlib/mprec.h deleted file mode 100644 index c5e3c15..0000000 --- a/newlib/libc/stdlib/mprec.h +++ /dev/null @@ -1,313 +0,0 @@ -/**************************************************************** - * - * The author of this software is David M. Gay. - * - * Copyright (c) 1991 by AT&T. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose without fee is hereby granted, provided that this entire notice - * is included in all copies of any software which is or includes a copy - * or modification of this software and in all copies of the supporting - * documentation for such software. - * - * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED - * WARRANTY. IN PARTICULAR, NEITHER THE AUTHOR NOR AT&T MAKES ANY - * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY - * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. - * - ***************************************************************/ - -/* Please send bug reports to - David M. Gay - AT&T Bell Laboratories, Room 2C-463 - 600 Mountain Avenue - Murray Hill, NJ 07974-2070 - U.S.A. - dmg@research.att.com or research!dmg - */ - -#include <ieeefp.h> -#include <math.h> -#include <float.h> -#include <errno.h> -#include <sys/config.h> - -#ifdef __IEEE_LITTLE_ENDIAN -#define IEEE_8087 -#endif - -#ifdef __IEEE_BIG_ENDIAN -#define IEEE_MC68k -#endif - -#ifdef __Z8000__ -#define Just_16 -#endif - -#ifdef DEBUG -#include "stdio.h" -#define Bug(x) {fprintf(stderr, "%s\n", x); exit(1);} -#endif - -#ifdef Unsigned_Shifts -#define Sign_Extend(a,b) if (b < 0) a |= (__uint32_t)0xffff0000; -#else -#define Sign_Extend(a,b) /*no-op*/ -#endif - -#if defined(IEEE_8087) + defined(IEEE_MC68k) + defined(VAX) + defined(IBM) != 1 -Exactly one of IEEE_8087, IEEE_MC68k, VAX, or IBM should be defined. -#endif - -/* If we are going to examine or modify specific bits in a double using - the word0 and/or word1 macros, then we must wrap the double inside - a union. This is necessary to avoid undefined behavior according to - the ANSI C spec. */ -union double_union -{ - double d; - __uint32_t i[2]; -}; - -#ifdef IEEE_8087 -#define word0(x) (x.i[1]) -#define word1(x) (x.i[0]) -#else -#define word0(x) (x.i[0]) -#define word1(x) (x.i[1]) -#endif - -/* The following definition of Storeinc is appropriate for MIPS processors. - * An alternative that might be better on some machines is - * #define Storeinc(a,b,c) (*a++ = b << 16 | c & 0xffff) - */ -#if defined(IEEE_8087) + defined(VAX) -#define Storeinc(a,b,c) (((unsigned short *)a)[1] = (unsigned short)b, \ -((unsigned short *)a)[0] = (unsigned short)c, a++) -#else -#define Storeinc(a,b,c) (((unsigned short *)a)[0] = (unsigned short)b, \ -((unsigned short *)a)[1] = (unsigned short)c, a++) -#endif - -/* #define P DBL_MANT_DIG */ -/* Ten_pmax = floor(P*log(2)/log(5)) */ -/* Bletch = (highest power of 2 < DBL_MAX_10_EXP) / 16 */ -/* Quick_max = floor((P-1)*log(FLT_RADIX)/log(10) - 1) */ -/* Int_max = floor(P*log(FLT_RADIX)/log(10) - 1) */ - -#if defined(IEEE_8087) + defined(IEEE_MC68k) -#if defined (_DOUBLE_IS_32BITS) -#define Exp_shift 23 -#define Exp_shift1 23 -#define Exp_msk1 ((__uint32_t)0x00800000L) -#define Exp_msk11 ((__uint32_t)0x00800000L) -#define Exp_mask ((__uint32_t)0x7f800000L) -#define P 24 -#define Bias 127 -#if 0 -#define IEEE_Arith /* it is, but the code doesn't handle IEEE singles yet */ -#endif -#define Emin (-126) -#define Exp_1 ((__uint32_t)0x3f800000L) -#define Exp_11 ((__uint32_t)0x3f800000L) -#define Ebits 8 -#define Frac_mask ((__uint32_t)0x007fffffL) -#define Frac_mask1 ((__uint32_t)0x007fffffL) -#define Ten_pmax 10 -#define Sign_bit ((__uint32_t)0x80000000L) -#define Ten_pmax 10 -#define Bletch 2 -#define Bndry_mask ((__uint32_t)0x007fffffL) -#define Bndry_mask1 ((__uint32_t)0x007fffffL) -#define LSB 1 -#define Sign_bit ((__uint32_t)0x80000000L) -#define Log2P 1 -#define Tiny0 0 -#define Tiny1 1 -#define Quick_max 5 -#define Int_max 6 -#define Infinite(x) (word0(x) == ((__uint32_t)0x7f800000L)) -#undef word0 -#undef word1 - -#define word0(x) (x.i[0]) -#define word1(x) 0 -#else - -#define Exp_shift 20 -#define Exp_shift1 20 -#define Exp_msk1 ((__uint32_t)0x100000L) -#define Exp_msk11 ((__uint32_t)0x100000L) -#define Exp_mask ((__uint32_t)0x7ff00000L) -#define P 53 -#define Bias 1023 -#define IEEE_Arith -#define Emin (-1022) -#define Exp_1 ((__uint32_t)0x3ff00000L) -#define Exp_11 ((__uint32_t)0x3ff00000L) -#define Ebits 11 -#define Frac_mask ((__uint32_t)0xfffffL) -#define Frac_mask1 ((__uint32_t)0xfffffL) -#define Ten_pmax 22 -#define Bletch 0x10 -#define Bndry_mask ((__uint32_t)0xfffffL) -#define Bndry_mask1 ((__uint32_t)0xfffffL) -#define LSB 1 -#define Sign_bit ((__uint32_t)0x80000000L) -#define Log2P 1 -#define Tiny0 0 -#define Tiny1 1 -#define Quick_max 14 -#define Int_max 14 -#define Infinite(x) (word0(x) == ((__uint32_t)0x7ff00000L)) /* sufficient test for here */ -#endif - -#else -#undef Sudden_Underflow -#define Sudden_Underflow -#ifdef IBM -#define Exp_shift 24 -#define Exp_shift1 24 -#define Exp_msk1 ((__uint32_t)0x1000000L) -#define Exp_msk11 ((__uint32_t)0x1000000L) -#define Exp_mask ((__uint32_t)0x7f000000L) -#define P 14 -#define Bias 65 -#define Exp_1 ((__uint32_t)0x41000000L) -#define Exp_11 ((__uint32_t)0x41000000L) -#define Ebits 8 /* exponent has 7 bits, but 8 is the right value in b2d */ -#define Frac_mask ((__uint32_t)0xffffffL) -#define Frac_mask1 ((__uint32_t)0xffffffL) -#define Bletch 4 -#define Ten_pmax 22 -#define Bndry_mask ((__uint32_t)0xefffffL) -#define Bndry_mask1 ((__uint32_t)0xffffffL) -#define LSB 1 -#define Sign_bit ((__uint32_t)0x80000000L) -#define Log2P 4 -#define Tiny0 ((__uint32_t)0x100000L) -#define Tiny1 0 -#define Quick_max 14 -#define Int_max 15 -#else /* VAX */ -#define Exp_shift 23 -#define Exp_shift1 7 -#define Exp_msk1 0x80 -#define Exp_msk11 ((__uint32_t)0x800000L) -#define Exp_mask ((__uint32_t)0x7f80L) -#define P 56 -#define Bias 129 -#define Exp_1 ((__uint32_t)0x40800000L) -#define Exp_11 ((__uint32_t)0x4080L) -#define Ebits 8 -#define Frac_mask ((__uint32_t)0x7fffffL) -#define Frac_mask1 ((__uint32_t)0xffff007fL) -#define Ten_pmax 24 -#define Bletch 2 -#define Bndry_mask ((__uint32_t)0xffff007fL) -#define Bndry_mask1 ((__uint32_t)0xffff007fL) -#define LSB ((__uint32_t)0x10000L) -#define Sign_bit ((__uint32_t)0x8000L) -#define Log2P 1 -#define Tiny0 0x80 -#define Tiny1 0 -#define Quick_max 15 -#define Int_max 15 -#endif -#endif - -#ifndef IEEE_Arith -#define ROUND_BIASED -#endif - -#ifdef RND_PRODQUOT -#define rounded_product(a,b) a = rnd_prod(a, b) -#define rounded_quotient(a,b) a = rnd_quot(a, b) -#ifdef KR_headers -extern double rnd_prod(), rnd_quot(); -#else -extern double rnd_prod(double, double), rnd_quot(double, double); -#endif -#else -#define rounded_product(a,b) a *= b -#define rounded_quotient(a,b) a /= b -#endif - -#define Big0 (Frac_mask1 | Exp_msk1*(DBL_MAX_EXP+Bias-1)) -#define Big1 ((__uint32_t)0xffffffffL) - -#ifndef Just_16 -/* When Pack_32 is not defined, we store 16 bits per 32-bit long. - * This makes some inner loops simpler and sometimes saves work - * during multiplications, but it often seems to make things slightly - * slower. Hence the default is now to store 32 bits per long. - */ - -#ifndef Pack_32 -#define Pack_32 -#endif -#endif - - -#ifdef __cplusplus -extern "C" double strtod(const char *s00, char **se); -extern "C" char *dtoa(double d, int mode, int ndigits, - int *decpt, int *sign, char **rve); -#endif - - -typedef struct _Bigint _Bigint; - -#define Balloc _Balloc -#define Bfree _Bfree -#define multadd _multadd -#define s2b _s2b -#define lo0bits _lo0bits -#define hi0bits _hi0bits -#define i2b _i2b -#define mult _multiply -#define pow5mult _pow5mult -#define lshift _lshift -#define cmp __mcmp -#define diff __mdiff -#define ulp _ulp -#define b2d _b2d -#define d2b _d2b -#define ratio _ratio - -#define tens __mprec_tens -#define bigtens __mprec_bigtens -#define tinytens __mprec_tinytens - -struct _reent ; -double _EXFUN(ulp,(double x)); -double _EXFUN(b2d,(_Bigint *a , int *e)); -_Bigint * _EXFUN(Balloc,(struct _reent *p, int k)); -void _EXFUN(Bfree,(struct _reent *p, _Bigint *v)); -_Bigint * _EXFUN(multadd,(struct _reent *p, _Bigint *, int, int)); -_Bigint * _EXFUN(s2b,(struct _reent *, const char*, int, int, ULong)); -_Bigint * _EXFUN(i2b,(struct _reent *,int)); -_Bigint * _EXFUN(mult, (struct _reent *, _Bigint *, _Bigint *)); -_Bigint * _EXFUN(pow5mult, (struct _reent *, _Bigint *, int k)); -int _EXFUN(hi0bits,(ULong)); -int _EXFUN(lo0bits,(ULong *)); -_Bigint * _EXFUN(d2b,(struct _reent *p, double d, int *e, int *bits)); -_Bigint * _EXFUN(lshift,(struct _reent *p, _Bigint *b, int k)); -_Bigint * _EXFUN(diff,(struct _reent *p, _Bigint *a, _Bigint *b)); -int _EXFUN(cmp,(_Bigint *a, _Bigint *b)); - -double _EXFUN(ratio,(_Bigint *a, _Bigint *b)); -#define Bcopy(x,y) memcpy((char *)&x->_sign, (char *)&y->_sign, y->_wds*sizeof(Long) + 2*sizeof(int)) - -#if defined(_DOUBLE_IS_32BITS) && defined(__v800) -#define n_bigtens 2 -#else -#define n_bigtens 5 -#endif - -extern _CONST double tinytens[]; -extern _CONST double bigtens[]; -extern _CONST double tens[]; - - -double _EXFUN(_mprec_log10,(int)); |