4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This is a variation on dtoa.c that converts arbitary binary
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync floating-point formats to and from decimal notation. It uses
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync double-precision arithmetic internally, so there are still
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync various #ifdefs that adapt the calculations to the native
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync double-precision arithmetic (any of IEEE, VAX D_floating,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync or IBM mainframe arithmetic).
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Please send bug reports to David M. Gay (dmg at acm dot org,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync with " at " changed at "@" and " dot " changed to ".").
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This program and the accompanying materials are licensed and made available under
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync the terms and conditions of the BSD License that accompanies this distribution.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync The full text of the license may be found at
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync The author of this software is David M. Gay.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Copyright (C) 1998-2000 by Lucent Technologies
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync All Rights Reserved
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Permission to use, copy, modify, and distribute this software and
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync its documentation for any purpose and without fee is hereby
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync granted, provided that the above copyright notice appear in all
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync copies and that both that the copyright notice and this
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync permission notice and warranty disclaimer appear in supporting
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync documentation, and that the name of Lucent or any of its entities
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync not be used in advertising or publicity pertaining to
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync distribution of the software without specific, written prior
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync permission.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync THIS SOFTWARE.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync$NetBSD: gdtoaimp.h,v 1.5.4.1 2007/05/07 19:49:06 pavel Exp
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* On a machine with IEEE extended-precision registers, it is
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * necessary to specify double-precision (53-bit) rounding precision
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * before invoking strtod or dtoa. If the machine uses (the equivalent
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * of) Intel 80x87 arithmetic, the call
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * _control87(PC_53, MCW_PC);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * does this with many compilers. Whether this or another call is
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * appropriate depends on the compiler; for this to work, it may be
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * necessary to #include "float.h" or another system-dependent header
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* strtod for IEEE-, VAX-, and IBM-arithmetic machines.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * This strtod returns a nearest machine number to the input decimal
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * string (or sets errno to ERANGE). With IEEE arithmetic, ties are
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * broken by the IEEE round-even rule. Otherwise ties are broken by
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * biased rounding (add half and chop).
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Inspired loosely by William D. Clinger's paper "How to Read Floating
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Point Numbers Accurately" [Proc. ACM SIGPLAN '90, pp. 112-126].
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Modifications:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 1. We only require IEEE, IBM, or VAX double-precision
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * arithmetic (not IEEE double-extended).
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 2. We get by with floating-point arithmetic in a case that
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Clinger missed -- when we're computing d * 10^n
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * for a small integer d and the integer n is not too
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * much larger than 22 (the maximum integer k for which
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * we can represent 10^k exactly), we may be able to
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * compute (d*10^k) * 10^(e-k) with just one roundoff.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 3. Rather than a bit-at-a-time adjustment of the binary
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * result in the hard case, we use floating-point
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * arithmetic to determine the adjustment to within
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * one bit; only in really hard cases do we need to
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * compute a second residual.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 4. Because of 3., we don't need a large table of powers of 10
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * for ten-to-e (just some small tables, e.g. of 10^k
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * for 0 <= k <= 22).
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define IEEE_LITTLE_ENDIAN for IEEE-arithmetic machines where the least
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * significant byte has the lowest address.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define IEEE_BIG_ENDIAN for IEEE-arithmetic machines where the most
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * significant byte has the lowest address.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define Long int on machines with 32-bit ints and 64-bit longs.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define Sudden_Underflow for IEEE-format machines without gradual
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * underflow (i.e., that flush to zero on underflow).
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define IBM for IBM mainframe-style floating-point arithmetic.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define VAX for VAX-style floating-point arithmetic (D_floating).
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define No_leftright to omit left-right logic in fast floating-point
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * computation of dtoa.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define Check_FLT_ROUNDS if FLT_ROUNDS can assume the values 2 or 3.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define RND_PRODQUOT to use rnd_prod and rnd_quot (assembly routines
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * that use extended-precision instructions to compute rounded
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * products and quotients) with IBM.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define ROUND_BIASED for IEEE-format with biased rounding.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define Inaccurate_Divide for IEEE-format with correctly rounded
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * products but inaccurate quotients, e.g., for Intel i860.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define NO_LONG_LONG on machines that do not have a "long long"
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * integer type (of >= 64 bits). On such machines, you can
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define Just_16 to store 16 bits per 32-bit Long when doing
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * high-precision integer arithmetic. Whether this speeds things
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * up or slows things down depends on the machine and the number
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * being converted. If long long is available and the name is
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * something other than "long long", #define Llong to be the name,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * and if "unsigned Llong" does not work as an unsigned version of
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Llong, #define #ULLong to be the corresponding unsigned type.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define KR_headers for old-style C function headers.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define Bad_float_h if your system lacks a float.h or if it does not
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * define some or all of DBL_DIG, DBL_MAX_10_EXP, DBL_MAX_EXP,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * FLT_RADIX, FLT_ROUNDS, and DBL_MAX.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define MALLOC your_malloc, where your_malloc(n) acts like malloc(n)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * if memory is available and otherwise does something you deem
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * appropriate. If MALLOC is undefined, malloc will be invoked
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * directly -- and assumed always to succeed.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define Omit_Private_Memory to omit logic (added Jan. 1998) for making
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * memory allocations from a private pool of memory when possible.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * When used, the private pool is PRIVATE_MEM bytes long: 2304 bytes,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * unless #defined to be a different length. This default length
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * suffices to get rid of MALLOC calls except for unusual cases,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * such as decimal-to-binary conversion of a very long string of
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * digits. When converting IEEE double precision values, the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * longest string gdtoa can return is about 751 bytes long. For
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * conversions by strtod of strings of 800 digits and all gdtoa
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * conversions of IEEE doubles in single-threaded executions with
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 8-byte pointers, PRIVATE_MEM >= 7400 appears to suffice; with
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 4-byte pointers, PRIVATE_MEM >= 7112 appears adequate.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define INFNAN_CHECK on IEEE systems to cause strtod to check for
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Infinity and NaN (case insensitively).
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * When INFNAN_CHECK is #defined and No_Hex_NaN is not #defined,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * strtodg also accepts (case insensitively) strings of the form
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * NaN(x), where x is a string of hexadecimal digits and spaces;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * if there is only one string of hexadecimal digits, it is taken
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * for the fraction bits of the resulting NaN; if there are two or
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * more strings of hexadecimal digits, each string is assigned
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * to the next available sequence of 32-bit words of fractions
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * bits (starting with the most significant), right-aligned in
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * each sequence.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define MULTIPLE_THREADS if the system offers preemptively scheduled
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * multiple threads. In this case, you must provide (or suitably
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define) two locks, acquired by ACQUIRE_DTOA_LOCK(n) and freed
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * by FREE_DTOA_LOCK(n) for n = 0 or 1. (The second lock, accessed
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * in pow5mult, ensures lazy evaluation of only one copy of high
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * powers of 5; omitting this lock would introduce a small
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * probability of wasting memory, but would otherwise be harmless.)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * You must also invoke freedtoa(s) to free the value s returned by
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * dtoa. You may do so whether or not MULTIPLE_THREADS is #defined.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define IMPRECISE_INEXACT if you do not care about the setting of
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * the STRTOG_Inexact bits in the special case of doing IEEE double
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * precision conversions (which could also be done by the strtog in
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define NO_HEX_FP to disable recognition of C9x's hexadecimal
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * floating-point constants.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define -DNO_ERRNO to suppress setting errno (in strtod.c and
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define NO_STRING_H to use private versions of memcpy.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * On some K&R systems, it may also be necessary to
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define DECLARE_SIZE_T in this case.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define YES_ALIAS to permit aliasing certain double values with
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * arrays of ULongs. This leads to slightly better code with
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * some compilers and was always used prior to 19990916, but it
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * is not strictly legal and can cause trouble with aggressively
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * optimizing compilers (e.g., gcc 2.95.1 under -O2).
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define USE_LOCALE to use the current locale's decimal_point value.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* #define IEEE_{BIG,LITTLE}_ENDIAN in ${ARCHDIR}/gdtoa/arith.h */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define Bug(x) {fprintf(stderr, "%s\n", x); exit(1);}
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#else /* ifndef Bad_float_h */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* Bad_float_h */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncextern "C" {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if defined(IEEE_LITTLE_ENDIAN) + defined(IEEE_BIG_ENDIAN) + defined(VAX) + defined(IBM) != 1
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncExactly one of IEEE_LITTLE_ENDIAN, IEEE_BIG_ENDIAN, VAX, or IBM should be defined.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync//typedef union { double d; UINT32 L[2]; } U;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#else /* !YES_ALIAS */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* YES_ALIAS */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* The following definition of Storeinc is appropriate for MIPS processors.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * An alternative that might be better on some machines is
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * #define Storeinc(a,b,c) (*a++ = b << 16 | c & 0xffff)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (((unsigned short *)(void *)a)[1] = (unsigned short)b, \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync ((unsigned short *)(void *)a)[0] = (unsigned short)c, \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (((unsigned short *)(void *)a)[0] = (unsigned short)b, \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync ((unsigned short *)(void *)a)[1] = (unsigned short)c, \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* #define P DBL_MANT_DIG */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* Ten_pmax = floor(P*log(2)/log(5)) */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* Bletch = (highest power of 2 < DBL_MAX_10_EXP) / 16 */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* Quick_max = floor((P-1)*log(FLT_RADIX)/log(10) - 1) */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* Int_max = floor(P*log(FLT_RADIX)/log(10) - 1) */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define P 53
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /*Flt_Rounds*/
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#else /* ifndef IEEE_Arith */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define P 14
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define Ebits 8 /* exponent has 7 bits, but 8 is the right value in b2d */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#else /* VAX */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define P 56
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* IBM, VAX */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* IEEE_Arith */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncextern double rnd_prod(double, double), rnd_quot(double, double);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define Big0 (Frac_mask1 | Exp_msk1*(DBL_MAX_EXP+Bias-1))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* When Pack_32 is not defined, we store 16 bits per 32-bit Long.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * This makes some inner loops simpler and sometimes saves work
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * during multiplications, but it often seems to make things slightly
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * slower. Hence the default is now to store 32 bits per Long.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#else /* long long available */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* NO_LONG_LONG */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } while (/* CONSTCOND */ 0)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } while (/* CONSTCOND */ 0)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncextern void memcpy_D2A ANSI((void*, const void*, size_t));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define Bcopy(x,y) memcpy_D2A(&x->sign,&y->sign,y->wds*sizeof(ULong) + 2*sizeof(int))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#else /* !NO_STRING_H */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define Bcopy(x,y) memcpy(&x->sign,&y->sign,y->wds*sizeof(ULong) + 2*sizeof(int))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* NO_STRING_H */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncextern unsigned char hexdig[];
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncextern char *g__fmt (char*, char*, char*, int, ULong);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncextern int gethex (CONST char**, CONST FPI*, Long*, Bigint**, int);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncextern int hexnan (CONST char**, CONST FPI*, ULong*);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncextern char *nrv_alloc (CONST char*, char **, size_t);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncextern char *strcp (char*, const char*);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncextern int strtoIg (CONST char*, char**, FPI*, Long*, Bigint**, int*);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncextern double ulp (double);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * NAN_WORD0 and NAN_WORD1 are only referenced in strtod.c. Prior to
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 20050115, they used to be hard-wired here (to 0x7ff80000 and 0,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * respectively), but now are determined by compiling and running
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * qnan.c to generate gd_qnan.h, which specifies d_QNAN0 and d_QNAN1.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Formerly gdtoaimp.h recommended supplying suitable -DNAN_WORD0=...
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * and -DNAN_WORD1=... values if necessary. This should still work.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * (On HP Series 700/800 machines, -DNAN_WORD0=0x7ff40000 works.)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* GDTOAIMP_H_INCLUDED */