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05c7d5f615
ISSUES.txt: Added issue 11, updated status of issue 1. gdtoa/gdtoaimp.h: Fix definition of union U. Locale/_wcstod.h: Return 0.0 instead of 0 in the "no_convert" case. Locale/multibyte_Utf8.c: In wcsrtombs(), if both the destination pointer is NULL and the size, Limit, is 0; return the estimated length of the converted string up to ASCII_STRING_MAX bytes. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: daryl.mcdaniel@intel.com Reviewed-by: Aniruddha_Herekar@Dell.com git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14171 6f19259b-4bc3-4df7-8a09-765794883524
661 lines
22 KiB
C
661 lines
22 KiB
C
/** @file
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This is a variation on dtoa.c that converts arbitary binary
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floating-point formats to and from decimal notation. It uses
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double-precision arithmetic internally, so there are still
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various #ifdefs that adapt the calculations to the native
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double-precision arithmetic (any of IEEE, VAX D_floating,
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or IBM mainframe arithmetic).
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Please send bug reports to David M. Gay (dmg at acm dot org,
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with " at " changed at "@" and " dot " changed to ".").
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Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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The author of this software is David M. Gay.
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Copyright (C) 1998-2000 by Lucent Technologies
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and
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its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of Lucent or any of its entities
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not be used in advertising or publicity pertaining to
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distribution of the software without specific, written prior
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permission.
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LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
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IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
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SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
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IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
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THIS SOFTWARE.
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$NetBSD: gdtoaimp.h,v 1.5.4.1 2007/05/07 19:49:06 pavel Exp
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**/
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/* On a machine with IEEE extended-precision registers, it is
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* necessary to specify double-precision (53-bit) rounding precision
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* before invoking strtod or dtoa. If the machine uses (the equivalent
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* of) Intel 80x87 arithmetic, the call
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* _control87(PC_53, MCW_PC);
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* does this with many compilers. Whether this or another call is
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* appropriate depends on the compiler; for this to work, it may be
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* necessary to #include "float.h" or another system-dependent header
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* file.
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*/
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/* strtod for IEEE-, VAX-, and IBM-arithmetic machines.
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*
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* This strtod returns a nearest machine number to the input decimal
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* string (or sets errno to ERANGE). With IEEE arithmetic, ties are
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* broken by the IEEE round-even rule. Otherwise ties are broken by
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* biased rounding (add half and chop).
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*
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* Inspired loosely by William D. Clinger's paper "How to Read Floating
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* Point Numbers Accurately" [Proc. ACM SIGPLAN '90, pp. 112-126].
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*
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* Modifications:
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*
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* 1. We only require IEEE, IBM, or VAX double-precision
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* arithmetic (not IEEE double-extended).
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* 2. We get by with floating-point arithmetic in a case that
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* Clinger missed -- when we're computing d * 10^n
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* for a small integer d and the integer n is not too
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* much larger than 22 (the maximum integer k for which
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* we can represent 10^k exactly), we may be able to
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* compute (d*10^k) * 10^(e-k) with just one roundoff.
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* 3. Rather than a bit-at-a-time adjustment of the binary
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* result in the hard case, we use floating-point
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* arithmetic to determine the adjustment to within
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* one bit; only in really hard cases do we need to
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* compute a second residual.
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* 4. Because of 3., we don't need a large table of powers of 10
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* for ten-to-e (just some small tables, e.g. of 10^k
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* for 0 <= k <= 22).
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*/
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/*
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* #define IEEE_LITTLE_ENDIAN for IEEE-arithmetic machines where the least
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* significant byte has the lowest address.
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* #define IEEE_BIG_ENDIAN for IEEE-arithmetic machines where the most
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* significant byte has the lowest address.
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* #define Long int on machines with 32-bit ints and 64-bit longs.
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* #define Sudden_Underflow for IEEE-format machines without gradual
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* underflow (i.e., that flush to zero on underflow).
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* #define IBM for IBM mainframe-style floating-point arithmetic.
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* #define VAX for VAX-style floating-point arithmetic (D_floating).
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* #define No_leftright to omit left-right logic in fast floating-point
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* computation of dtoa.
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* #define Check_FLT_ROUNDS if FLT_ROUNDS can assume the values 2 or 3.
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* #define RND_PRODQUOT to use rnd_prod and rnd_quot (assembly routines
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* that use extended-precision instructions to compute rounded
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* products and quotients) with IBM.
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* #define ROUND_BIASED for IEEE-format with biased rounding.
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* #define Inaccurate_Divide for IEEE-format with correctly rounded
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* products but inaccurate quotients, e.g., for Intel i860.
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* #define NO_LONG_LONG on machines that do not have a "long long"
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* integer type (of >= 64 bits). On such machines, you can
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* #define Just_16 to store 16 bits per 32-bit Long when doing
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* high-precision integer arithmetic. Whether this speeds things
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* up or slows things down depends on the machine and the number
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* being converted. If long long is available and the name is
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* something other than "long long", #define Llong to be the name,
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* and if "unsigned Llong" does not work as an unsigned version of
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* Llong, #define #ULLong to be the corresponding unsigned type.
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* #define KR_headers for old-style C function headers.
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* #define Bad_float_h if your system lacks a float.h or if it does not
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* define some or all of DBL_DIG, DBL_MAX_10_EXP, DBL_MAX_EXP,
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* FLT_RADIX, FLT_ROUNDS, and DBL_MAX.
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* #define MALLOC your_malloc, where your_malloc(n) acts like malloc(n)
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* if memory is available and otherwise does something you deem
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* appropriate. If MALLOC is undefined, malloc will be invoked
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* directly -- and assumed always to succeed.
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* #define Omit_Private_Memory to omit logic (added Jan. 1998) for making
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* memory allocations from a private pool of memory when possible.
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* When used, the private pool is PRIVATE_MEM bytes long: 2304 bytes,
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* unless #defined to be a different length. This default length
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* suffices to get rid of MALLOC calls except for unusual cases,
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* such as decimal-to-binary conversion of a very long string of
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* digits. When converting IEEE double precision values, the
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* longest string gdtoa can return is about 751 bytes long. For
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* conversions by strtod of strings of 800 digits and all gdtoa
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* conversions of IEEE doubles in single-threaded executions with
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* 8-byte pointers, PRIVATE_MEM >= 7400 appears to suffice; with
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* 4-byte pointers, PRIVATE_MEM >= 7112 appears adequate.
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* #define INFNAN_CHECK on IEEE systems to cause strtod to check for
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* Infinity and NaN (case insensitively).
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* When INFNAN_CHECK is #defined and No_Hex_NaN is not #defined,
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* strtodg also accepts (case insensitively) strings of the form
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* NaN(x), where x is a string of hexadecimal digits and spaces;
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* if there is only one string of hexadecimal digits, it is taken
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* for the fraction bits of the resulting NaN; if there are two or
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* more strings of hexadecimal digits, each string is assigned
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* to the next available sequence of 32-bit words of fractions
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* bits (starting with the most significant), right-aligned in
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* each sequence.
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* #define MULTIPLE_THREADS if the system offers preemptively scheduled
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* multiple threads. In this case, you must provide (or suitably
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* #define) two locks, acquired by ACQUIRE_DTOA_LOCK(n) and freed
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* by FREE_DTOA_LOCK(n) for n = 0 or 1. (The second lock, accessed
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* in pow5mult, ensures lazy evaluation of only one copy of high
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* powers of 5; omitting this lock would introduce a small
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* probability of wasting memory, but would otherwise be harmless.)
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* You must also invoke freedtoa(s) to free the value s returned by
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* dtoa. You may do so whether or not MULTIPLE_THREADS is #defined.
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* #define IMPRECISE_INEXACT if you do not care about the setting of
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* the STRTOG_Inexact bits in the special case of doing IEEE double
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* precision conversions (which could also be done by the strtog in
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* dtoa.c).
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* #define NO_HEX_FP to disable recognition of C9x's hexadecimal
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* floating-point constants.
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* #define -DNO_ERRNO to suppress setting errno (in strtod.c and
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* strtodg.c).
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* #define NO_STRING_H to use private versions of memcpy.
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* On some K&R systems, it may also be necessary to
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* #define DECLARE_SIZE_T in this case.
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* #define YES_ALIAS to permit aliasing certain double values with
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* arrays of ULongs. This leads to slightly better code with
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* some compilers and was always used prior to 19990916, but it
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* is not strictly legal and can cause trouble with aggressively
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* optimizing compilers (e.g., gcc 2.95.1 under -O2).
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* #define USE_LOCALE to use the current locale's decimal_point value.
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*/
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/* #define IEEE_{BIG,LITTLE}_ENDIAN in ${ARCHDIR}/gdtoa/arith.h */
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#include <LibConfig.h>
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#include <stdint.h>
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#define Short int16_t
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#define UShort uint16_t
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#define Long EFI_LONG_T
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#define ULong EFI_ULONG_T
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#define LLong int64_t
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#define ULLong uint64_t
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#define INFNAN_CHECK
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#ifdef _REENTRANT
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#define MULTIPLE_THREADS
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#endif
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#define USE_LOCALE
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#ifndef GDTOAIMP_H_INCLUDED
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#define GDTOAIMP_H_INCLUDED
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#include "gdtoa.h"
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#include "gd_qnan.h"
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#ifdef DEBUG
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#include "stdio.h"
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#define Bug(x) {fprintf(stderr, "%s\n", x); exit(1);}
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#endif
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#include "stdlib.h"
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#include "string.h"
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#ifdef KR_headers
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#define Char char
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#else
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#define Char void
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#endif
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#ifdef MALLOC
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extern Char *MALLOC ANSI((size_t));
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#else
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#define MALLOC malloc
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#endif
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#undef IEEE_Arith
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#undef Avoid_Underflow
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#ifdef IEEE_BIG_ENDIAN
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#define IEEE_Arith
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#endif
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#ifdef IEEE_LITTLE_ENDIAN
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#define IEEE_Arith
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#endif
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#include "errno.h"
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#ifdef Bad_float_h
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#ifdef IEEE_Arith
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#define DBL_DIG 15
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#define DBL_MAX_10_EXP 308
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#define DBL_MAX_EXP 1024
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#define FLT_RADIX 2
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#define DBL_MAX 1.7976931348623157e+308
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#endif
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#ifdef IBM
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#define DBL_DIG 16
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#define DBL_MAX_10_EXP 75
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#define DBL_MAX_EXP 63
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#define FLT_RADIX 16
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#define DBL_MAX 7.2370055773322621e+75
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#endif
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#ifdef VAX
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#define DBL_DIG 16
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#define DBL_MAX_10_EXP 38
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#define DBL_MAX_EXP 127
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#define FLT_RADIX 2
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#define DBL_MAX 1.7014118346046923e+38
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#define n_bigtens 2
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#endif
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#ifndef LONG_MAX
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#define LONG_MAX 2147483647
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#endif
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#else /* ifndef Bad_float_h */
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#include "float.h"
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#endif /* Bad_float_h */
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#ifdef IEEE_Arith
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#define Scale_Bit 0x10
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#define n_bigtens 5
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#endif
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#ifdef IBM
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#define n_bigtens 3
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#endif
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#ifdef VAX
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#define n_bigtens 2
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#endif
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#include "math.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(IEEE_LITTLE_ENDIAN) + defined(IEEE_BIG_ENDIAN) + defined(VAX) + defined(IBM) != 1
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Exactly one of IEEE_LITTLE_ENDIAN, IEEE_BIG_ENDIAN, VAX, or IBM should be defined.
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#endif
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typedef union { double d; UINT32 L[2]; } U;
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#ifdef YES_ALIAS
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#define dval(x) x
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#ifdef IEEE_LITTLE_ENDIAN
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#define word0(x) ((ULong *)&x)[1]
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#define word1(x) ((ULong *)&x)[0]
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#else
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#define word0(x) ((ULong *)&x)[0]
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#define word1(x) ((ULong *)&x)[1]
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#endif
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#else /* !YES_ALIAS */
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#ifdef IEEE_LITTLE_ENDIAN
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#define word0(x) ( /* LINTED */ (U*)&x)->L[1]
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#define word1(x) ( /* LINTED */ (U*)&x)->L[0]
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#else
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#define word0(x) ( /* LINTED */ (U*)&x)->L[0]
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#define word1(x) ( /* LINTED */ (U*)&x)->L[1]
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#endif
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#define dval(x) ( /* LINTED */ (U*)&x)->d
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#endif /* YES_ALIAS */
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/* The following definition of Storeinc is appropriate for MIPS processors.
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* An alternative that might be better on some machines is
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* #define Storeinc(a,b,c) (*a++ = b << 16 | c & 0xffff)
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*/
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#if defined(IEEE_LITTLE_ENDIAN) + defined(VAX)
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#define Storeinc(a,b,c) \
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(((unsigned short *)(void *)a)[1] = (unsigned short)b, \
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((unsigned short *)(void *)a)[0] = (unsigned short)c, \
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a++)
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#else
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#define Storeinc(a,b,c) \
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(((unsigned short *)(void *)a)[0] = (unsigned short)b, \
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((unsigned short *)(void *)a)[1] = (unsigned short)c, \
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a++)
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#endif
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/* #define P DBL_MANT_DIG */
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/* Ten_pmax = floor(P*log(2)/log(5)) */
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/* Bletch = (highest power of 2 < DBL_MAX_10_EXP) / 16 */
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/* Quick_max = floor((P-1)*log(FLT_RADIX)/log(10) - 1) */
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/* Int_max = floor(P*log(FLT_RADIX)/log(10) - 1) */
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#ifdef IEEE_Arith
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#define Exp_shift 20
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#define Exp_shift1 20
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#define Exp_msk1 0x100000
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#define Exp_msk11 0x100000
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#define Exp_mask 0x7ff00000
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#define P 53
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#define Bias 1023
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#define Emin (-1022)
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#define Exp_1 0x3ff00000
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#define Exp_11 0x3ff00000
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#define Ebits 11
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#define Frac_mask 0xfffffU
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#define Frac_mask1 0xfffffU
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#define Ten_pmax 22
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#define Bletch 0x10
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#define Bndry_mask 0xfffffU
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#define Bndry_mask1 0xfffffU
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#define LSB 1
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#define Sign_bit 0x80000000
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#define Log2P 1
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#define Tiny0 0
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#define Tiny1 1
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#define Quick_max 14
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#define Int_max 14
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#ifndef Flt_Rounds
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#ifdef FLT_ROUNDS
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#define Flt_Rounds FLT_ROUNDS
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#else
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#define Flt_Rounds 1
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#endif
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#endif /*Flt_Rounds*/
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#else /* ifndef IEEE_Arith */
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#undef Sudden_Underflow
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#define Sudden_Underflow
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#ifdef IBM
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#undef Flt_Rounds
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#define Flt_Rounds 0
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#define Exp_shift 24
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#define Exp_shift1 24
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#define Exp_msk1 0x1000000
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#define Exp_msk11 0x1000000
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#define Exp_mask 0x7f000000
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#define P 14
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#define Bias 65
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#define Exp_1 0x41000000
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#define Exp_11 0x41000000
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#define Ebits 8 /* exponent has 7 bits, but 8 is the right value in b2d */
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#define Frac_mask 0xffffff
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#define Frac_mask1 0xffffff
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#define Bletch 4
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#define Ten_pmax 22
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#define Bndry_mask 0xefffff
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#define Bndry_mask1 0xffffff
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#define LSB 1
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#define Sign_bit 0x80000000
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#define Log2P 4
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#define Tiny0 0x100000
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#define Tiny1 0
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#define Quick_max 14
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#define Int_max 15
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#else /* VAX */
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#undef Flt_Rounds
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#define Flt_Rounds 1
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#define Exp_shift 23
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#define Exp_shift1 7
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#define Exp_msk1 0x80
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#define Exp_msk11 0x800000
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#define Exp_mask 0x7f80
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#define P 56
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#define Bias 129
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#define Exp_1 0x40800000
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#define Exp_11 0x4080
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#define Ebits 8
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#define Frac_mask 0x7fffff
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#define Frac_mask1 0xffff007f
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#define Ten_pmax 24
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#define Bletch 2
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#define Bndry_mask 0xffff007f
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#define Bndry_mask1 0xffff007f
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#define LSB 0x10000
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#define Sign_bit 0x8000
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#define Log2P 1
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#define Tiny0 0x80
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#define Tiny1 0
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#define Quick_max 15
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#define Int_max 15
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#endif /* IBM, VAX */
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#endif /* IEEE_Arith */
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#ifndef IEEE_Arith
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#define ROUND_BIASED
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#endif
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#ifdef RND_PRODQUOT
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#define rounded_product(a,b) a = rnd_prod(a, b)
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#define rounded_quotient(a,b) a = rnd_quot(a, b)
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#ifdef KR_headers
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extern double rnd_prod(), rnd_quot();
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#else
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extern double rnd_prod(double, double), rnd_quot(double, double);
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#endif
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#else
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#define rounded_product(a,b) a *= b
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#define rounded_quotient(a,b) a /= b
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#endif
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#define Big0 (Frac_mask1 | Exp_msk1*(DBL_MAX_EXP+Bias-1))
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#define Big1 0xffffffffU
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#undef Pack_16
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#ifndef Pack_32
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#define Pack_32
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#endif
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#ifdef NO_LONG_LONG
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#undef ULLong
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#ifdef Just_16
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#undef Pack_32
|
|
#define Pack_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.
|
|
*/
|
|
#endif
|
|
#else /* long long available */
|
|
#ifndef Llong
|
|
#define Llong long long
|
|
#endif
|
|
#ifndef ULLong
|
|
#define ULLong unsigned Llong
|
|
#endif
|
|
#endif /* NO_LONG_LONG */
|
|
|
|
#ifdef Pack_32
|
|
#define ULbits 32
|
|
#define kshift 5
|
|
#define kmask 31
|
|
#define ALL_ON 0xffffffff
|
|
#else
|
|
#define ULbits 16
|
|
#define kshift 4
|
|
#define kmask 15
|
|
#define ALL_ON 0xffff
|
|
#endif
|
|
|
|
#ifndef MULTIPLE_THREADS
|
|
#define ACQUIRE_DTOA_LOCK(n) /*nothing*/
|
|
#define FREE_DTOA_LOCK(n) /*nothing*/
|
|
#else
|
|
#include "reentrant.h"
|
|
|
|
extern mutex_t __gdtoa_locks[2];
|
|
|
|
#define ACQUIRE_DTOA_LOCK(n) \
|
|
do { \
|
|
if (__isthreaded) \
|
|
mutex_lock(&__gdtoa_locks[n]); \
|
|
} while (/* CONSTCOND */ 0)
|
|
#define FREE_DTOA_LOCK(n) \
|
|
do { \
|
|
if (__isthreaded) \
|
|
mutex_unlock(&__gdtoa_locks[n]); \
|
|
} while (/* CONSTCOND */ 0)
|
|
#endif
|
|
|
|
#define Kmax 15
|
|
|
|
struct
|
|
Bigint {
|
|
struct Bigint *next;
|
|
int k, maxwds, sign, wds;
|
|
ULong x[1];
|
|
};
|
|
|
|
typedef struct Bigint Bigint;
|
|
|
|
#ifdef NO_STRING_H
|
|
#ifdef DECLARE_SIZE_T
|
|
typedef unsigned int size_t;
|
|
#endif
|
|
extern void memcpy_D2A ANSI((void*, const void*, size_t));
|
|
#define Bcopy(x,y) memcpy_D2A(&x->sign,&y->sign,y->wds*sizeof(ULong) + 2*sizeof(int))
|
|
#else /* !NO_STRING_H */
|
|
#define Bcopy(x,y) memcpy(&x->sign,&y->sign,y->wds*sizeof(ULong) + 2*sizeof(int))
|
|
#endif /* NO_STRING_H */
|
|
|
|
#define Balloc __Balloc_D2A
|
|
#define Bfree __Bfree_D2A
|
|
#define ULtoQ __ULtoQ_D2A
|
|
#define ULtof __ULtof_D2A
|
|
#define ULtod __ULtod_D2A
|
|
#define ULtodd __ULtodd_D2A
|
|
#define ULtox __ULtox_D2A
|
|
#define ULtoxL __ULtoxL_D2A
|
|
#define any_on __any_on_D2A
|
|
#define b2d __b2d_D2A
|
|
#define bigtens __bigtens_D2A
|
|
#define cmp __cmp_D2A
|
|
#define copybits __copybits_D2A
|
|
#define d2b __d2b_D2A
|
|
#define decrement __decrement_D2A
|
|
#define diff __diff_D2A
|
|
#define dtoa_result __dtoa_result_D2A
|
|
#define g__fmt __g__fmt_D2A
|
|
#define gethex __gethex_D2A
|
|
#define hexdig __hexdig_D2A
|
|
#define hexdig_init_D2A __hexdig_init_D2A
|
|
#define hexnan __hexnan_D2A
|
|
#define hi0bits __hi0bits_D2A
|
|
#define hi0bits_D2A __hi0bits_D2A
|
|
#define i2b __i2b_D2A
|
|
#define increment __increment_D2A
|
|
#define lo0bits __lo0bits_D2A
|
|
#define lshift __lshift_D2A
|
|
#define match __match_D2A
|
|
#define mult __mult_D2A
|
|
#define multadd __multadd_D2A
|
|
#define nrv_alloc __nrv_alloc_D2A
|
|
#define pow5mult __pow5mult_D2A
|
|
#define quorem __quorem_D2A
|
|
#define ratio __ratio_D2A
|
|
#define rshift __rshift_D2A
|
|
#define rv_alloc __rv_alloc_D2A
|
|
#define s2b __s2b_D2A
|
|
#define set_ones __set_ones_D2A
|
|
#define strcp __strcp_D2A
|
|
#define strcp_D2A __strcp_D2A
|
|
#define strtoIg __strtoIg_D2A
|
|
#define sum __sum_D2A
|
|
#define tens __tens_D2A
|
|
#define tinytens __tinytens_D2A
|
|
#define tinytens __tinytens_D2A
|
|
#define trailz __trailz_D2A
|
|
#define ulp __ulp_D2A
|
|
|
|
extern char *dtoa_result;
|
|
extern CONST double bigtens[], tens[], tinytens[];
|
|
extern unsigned char hexdig[];
|
|
|
|
extern Bigint *Balloc (int);
|
|
extern void Bfree (Bigint*);
|
|
extern void ULtof (ULong*, ULong*, Long, int);
|
|
extern void ULtod (ULong*, ULong*, Long, int);
|
|
extern void ULtodd (ULong*, ULong*, Long, int);
|
|
extern void ULtoQ (ULong*, ULong*, Long, int);
|
|
extern void ULtox (UShort*, ULong*, Long, int);
|
|
extern void ULtoxL (ULong*, ULong*, Long, int);
|
|
extern ULong any_on (Bigint*, int);
|
|
extern double b2d (Bigint*, int*);
|
|
extern int cmp (Bigint*, Bigint*);
|
|
extern void copybits (ULong*, int, Bigint*);
|
|
extern Bigint *d2b (double, int*, int*);
|
|
extern int decrement (Bigint*);
|
|
extern Bigint *diff (Bigint*, Bigint*);
|
|
extern char *dtoa (double d, int mode, int ndigits,
|
|
int *decpt, int *sign, char **rve);
|
|
extern char *g__fmt (char*, char*, char*, int, ULong);
|
|
extern int gethex (CONST char**, CONST FPI*, Long*, Bigint**, int);
|
|
extern void hexdig_init_D2A(Void);
|
|
extern int hexnan (CONST char**, CONST FPI*, ULong*);
|
|
extern int hi0bits_D2A (ULong);
|
|
extern Bigint *i2b (int);
|
|
extern Bigint *increment (Bigint*);
|
|
extern int lo0bits (ULong*);
|
|
extern Bigint *lshift (Bigint*, int);
|
|
extern int match (CONST char**, CONST char*);
|
|
extern Bigint *mult (Bigint*, Bigint*);
|
|
extern Bigint *multadd (Bigint*, int, int);
|
|
extern char *nrv_alloc (CONST char*, char **, size_t);
|
|
extern Bigint *pow5mult (Bigint*, int);
|
|
extern int quorem (Bigint*, Bigint*);
|
|
extern double ratio (Bigint*, Bigint*);
|
|
extern void rshift (Bigint*, int);
|
|
extern char *rv_alloc (size_t);
|
|
extern Bigint *s2b (CONST char*, int, int, ULong);
|
|
extern Bigint *set_ones (Bigint*, int);
|
|
extern char *strcp (char*, const char*);
|
|
extern int strtoIg (CONST char*, char**, FPI*, Long*, Bigint**, int*);
|
|
extern double strtod (const char *s00, char **se);
|
|
extern Bigint *sum (Bigint*, Bigint*);
|
|
extern int trailz (CONST Bigint*);
|
|
extern double ulp (double);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
/*
|
|
* NAN_WORD0 and NAN_WORD1 are only referenced in strtod.c. Prior to
|
|
* 20050115, they used to be hard-wired here (to 0x7ff80000 and 0,
|
|
* respectively), but now are determined by compiling and running
|
|
* qnan.c to generate gd_qnan.h, which specifies d_QNAN0 and d_QNAN1.
|
|
* Formerly gdtoaimp.h recommended supplying suitable -DNAN_WORD0=...
|
|
* and -DNAN_WORD1=... values if necessary. This should still work.
|
|
* (On HP Series 700/800 machines, -DNAN_WORD0=0x7ff40000 works.)
|
|
*/
|
|
#ifdef IEEE_Arith
|
|
#ifdef IEEE_BIG_ENDIAN
|
|
#define _0 0
|
|
#define _1 1
|
|
#ifndef NAN_WORD0
|
|
#define NAN_WORD0 d_QNAN0
|
|
#endif
|
|
#ifndef NAN_WORD1
|
|
#define NAN_WORD1 d_QNAN1
|
|
#endif
|
|
#else
|
|
#define _0 1
|
|
#define _1 0
|
|
#ifndef NAN_WORD0
|
|
#define NAN_WORD0 d_QNAN1
|
|
#endif
|
|
#ifndef NAN_WORD1
|
|
#define NAN_WORD1 d_QNAN0
|
|
#endif
|
|
#endif
|
|
#else
|
|
#undef INFNAN_CHECK
|
|
#endif
|
|
|
|
#undef SI
|
|
#ifdef Sudden_Underflow
|
|
#define SI 1
|
|
#else
|
|
#define SI 0
|
|
#endif
|
|
|
|
#endif /* GDTOAIMP_H_INCLUDED */
|