diff --git a/FreeBSD.gni b/FreeBSD.gni
index 9430babd352823d4da9eb156710b6f2b15552d16..51bb68966dc306c11dae670fed1f7b52bcf7bfde 100644
--- a/FreeBSD.gni
+++ b/FreeBSD.gni
@@ -27,3 +27,4 @@
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
FREEBSD_SYS_LIBKERN_SRC_FILES = [ "//third_party/FreeBSD/sys/libkern/crc32.c" ]
+FREEBSD_DIR = get_path_info(".", "abspath")
diff --git a/OAT.xml b/OAT.xml
index 2cee519db0ee286b406054c625bea96adc251137..ca140a72ef4d6cfae5f8c3bc26b6aa6afc168680 100644
--- a/OAT.xml
+++ b/OAT.xml
@@ -83,6 +83,27 @@ please copy it to your project root dir and modify it refer to OpenHarmony/tools
uvwxyz license textB xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
" desc=""/>
+
+
+
+
+
+
diff --git a/contrib/gdtoa/gdtoa.h b/contrib/gdtoa/gdtoa.h
new file mode 100644
index 0000000000000000000000000000000000000000..f004ec32746bc11c17adda833347604199b964af
--- /dev/null
+++ b/contrib/gdtoa/gdtoa.h
@@ -0,0 +1,154 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to "."). */
+
+#ifndef GDTOA_H_INCLUDED
+#define GDTOA_H_INCLUDED
+
+#include "arith.h"
+#include /* for size_t */
+
+#ifndef Long
+#define Long int
+#endif
+#ifndef ULong
+typedef unsigned Long ULong;
+#endif
+#ifndef UShort
+typedef unsigned short UShort;
+#endif
+
+#ifndef ANSI
+#ifdef KR_headers
+#define ANSI(x) ()
+#define Void /*nothing*/
+#else
+#define ANSI(x) x
+#define Void void
+#endif
+#endif /* ANSI */
+
+#ifndef CONST
+#ifdef KR_headers
+#define CONST /* blank */
+#else
+#define CONST const
+#endif
+#endif /* CONST */
+
+ enum { /* return values from strtodg */
+ STRTOG_Zero = 0,
+ STRTOG_Normal = 1,
+ STRTOG_Denormal = 2,
+ STRTOG_Infinite = 3,
+ STRTOG_NaN = 4,
+ STRTOG_NaNbits = 5,
+ STRTOG_NoNumber = 6,
+ STRTOG_Retmask = 7,
+
+ /* The following may be or-ed into one of the above values. */
+
+ STRTOG_Neg = 0x08, /* does not affect STRTOG_Inexlo or STRTOG_Inexhi */
+ STRTOG_Inexlo = 0x10, /* returned result rounded toward zero */
+ STRTOG_Inexhi = 0x20, /* returned result rounded away from zero */
+ STRTOG_Inexact = 0x30,
+ STRTOG_Underflow= 0x40,
+ STRTOG_Overflow = 0x80
+ };
+
+ typedef struct
+FPI {
+ int nbits;
+ int emin;
+ int emax;
+ int rounding;
+ int sudden_underflow;
+ } FPI;
+
+enum { /* FPI.rounding values: same as FLT_ROUNDS */
+ FPI_Round_zero = 0,
+ FPI_Round_near = 1,
+ FPI_Round_up = 2,
+ FPI_Round_down = 3
+ };
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern char* dtoa ANSI((double d, int mode, int ndigits, int *decpt,
+ int *sign, char **rve));
+extern char* gdtoa ANSI((FPI *fpi, int be, ULong *bits, int *kindp,
+ int mode, int ndigits, int *decpt, char **rve));
+extern void freedtoa ANSI((char*));
+extern float strtof ANSI((CONST char *, char **));
+extern double strtod ANSI((CONST char *, char **));
+extern int strtodg ANSI((CONST char*, char**, FPI*, Long*, ULong*));
+
+extern char* g_ddfmt ANSI((char*, double*, int, size_t));
+extern char* g_dfmt ANSI((char*, double*, int, size_t));
+extern char* g_ffmt ANSI((char*, float*, int, size_t));
+extern char* g_Qfmt ANSI((char*, void*, int, size_t));
+extern char* g_xfmt ANSI((char*, void*, int, size_t));
+extern char* g_xLfmt ANSI((char*, void*, int, size_t));
+
+extern int strtoId ANSI((CONST char*, char**, double*, double*));
+extern int strtoIdd ANSI((CONST char*, char**, double*, double*));
+extern int strtoIf ANSI((CONST char*, char**, float*, float*));
+extern int strtoIQ ANSI((CONST char*, char**, void*, void*));
+extern int strtoIx ANSI((CONST char*, char**, void*, void*));
+extern int strtoIxL ANSI((CONST char*, char**, void*, void*));
+extern int strtord ANSI((CONST char*, char**, int, double*));
+extern int strtordd ANSI((CONST char*, char**, int, double*));
+extern int strtorf ANSI((CONST char*, char**, int, float*));
+extern int strtorQ ANSI((CONST char*, char**, int, void*));
+extern int strtorx ANSI((CONST char*, char**, int, void*));
+extern int strtorxL ANSI((CONST char*, char**, int, void*));
+#if 1
+extern int strtodI ANSI((CONST char*, char**, double*));
+extern int strtopd ANSI((CONST char*, char**, double*));
+extern int strtopdd ANSI((CONST char*, char**, double*));
+extern int strtopf ANSI((CONST char*, char**, float*));
+extern int strtopQ ANSI((CONST char*, char**, void*));
+extern int strtopx ANSI((CONST char*, char**, void*));
+extern int strtopxL ANSI((CONST char*, char**, void*));
+#else
+#define strtopd(s,se,x) strtord(s,se,1,x)
+#define strtopdd(s,se,x) strtordd(s,se,1,x)
+#define strtopf(s,se,x) strtorf(s,se,1,x)
+#define strtopQ(s,se,x) strtorQ(s,se,1,x)
+#define strtopx(s,se,x) strtorx(s,se,1,x)
+#define strtopxL(s,se,x) strtorxL(s,se,1,x)
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* GDTOA_H_INCLUDED */
diff --git a/contrib/gdtoa/gdtoa_fltrnds.h b/contrib/gdtoa/gdtoa_fltrnds.h
new file mode 100644
index 0000000000000000000000000000000000000000..33e5f9e5342c8568e487b6a43115ce8091e35b7d
--- /dev/null
+++ b/contrib/gdtoa/gdtoa_fltrnds.h
@@ -0,0 +1,18 @@
+ FPI *fpi, fpi1;
+ int Rounding;
+#ifdef Trust_FLT_ROUNDS /*{{ only define this if FLT_ROUNDS really works! */
+ Rounding = Flt_Rounds;
+#else /*}{*/
+ Rounding = 1;
+ switch(fegetround()) {
+ case FE_TOWARDZERO: Rounding = 0; break;
+ case FE_UPWARD: Rounding = 2; break;
+ case FE_DOWNWARD: Rounding = 3;
+ }
+#endif /*}}*/
+ fpi = &fpi0;
+ if (Rounding != 1) {
+ fpi1 = fpi0;
+ fpi = &fpi1;
+ fpi1.rounding = Rounding;
+ }
diff --git a/contrib/gdtoa/gdtoaimp.h b/contrib/gdtoa/gdtoaimp.h
new file mode 100644
index 0000000000000000000000000000000000000000..9ca0a924791a72a0e06076a24f7f48af90bcd7f7
--- /dev/null
+++ b/contrib/gdtoa/gdtoaimp.h
@@ -0,0 +1,708 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998-2000 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* $FreeBSD$ */
+
+/* This is a variation on dtoa.c that converts arbitary binary
+ floating-point formats to and from decimal notation. It uses
+ double-precision arithmetic internally, so there are still
+ various #ifdefs that adapt the calculations to the native
+ double-precision arithmetic (any of IEEE, VAX D_floating,
+ or IBM mainframe arithmetic).
+
+ Please send bug reports to David M. Gay (dmg at acm dot org,
+ with " at " changed at "@" and " dot " changed to ".").
+ */
+
+/* On a machine with IEEE extended-precision registers, it is
+ * necessary to specify double-precision (53-bit) rounding precision
+ * before invoking strtod or dtoa. If the machine uses (the equivalent
+ * of) Intel 80x87 arithmetic, the call
+ * _control87(PC_53, MCW_PC);
+ * does this with many compilers. Whether this or another call is
+ * appropriate depends on the compiler; for this to work, it may be
+ * necessary to #include "float.h" or another system-dependent header
+ * file.
+ */
+
+/* strtod for IEEE-, VAX-, and IBM-arithmetic machines.
+ *
+ * This strtod returns a nearest machine number to the input decimal
+ * string (or sets errno to ERANGE). With IEEE arithmetic, ties are
+ * broken by the IEEE round-even rule. Otherwise ties are broken by
+ * biased rounding (add half and chop).
+ *
+ * Inspired loosely by William D. Clinger's paper "How to Read Floating
+ * Point Numbers Accurately" [Proc. ACM SIGPLAN '90, pp. 112-126].
+ *
+ * Modifications:
+ *
+ * 1. We only require IEEE, IBM, or VAX double-precision
+ * arithmetic (not IEEE double-extended).
+ * 2. We get by with floating-point arithmetic in a case that
+ * Clinger missed -- when we're computing d * 10^n
+ * for a small integer d and the integer n is not too
+ * much larger than 22 (the maximum integer k for which
+ * we can represent 10^k exactly), we may be able to
+ * compute (d*10^k) * 10^(e-k) with just one roundoff.
+ * 3. Rather than a bit-at-a-time adjustment of the binary
+ * result in the hard case, we use floating-point
+ * arithmetic to determine the adjustment to within
+ * one bit; only in really hard cases do we need to
+ * compute a second residual.
+ * 4. Because of 3., we don't need a large table of powers of 10
+ * for ten-to-e (just some small tables, e.g. of 10^k
+ * for 0 <= k <= 22).
+ */
+
+/*
+ * #define IEEE_8087 for IEEE-arithmetic machines where the least
+ * significant byte has the lowest address.
+ * #define IEEE_MC68k for IEEE-arithmetic machines where the most
+ * significant byte has the lowest address.
+ * #define Long int on machines with 32-bit ints and 64-bit longs.
+ * #define Sudden_Underflow for IEEE-format machines without gradual
+ * underflow (i.e., that flush to zero on underflow).
+ * #define IBM for IBM mainframe-style floating-point arithmetic.
+ * #define VAX for VAX-style floating-point arithmetic (D_floating).
+ * #define No_leftright to omit left-right logic in fast floating-point
+ * computation of dtoa.
+ * #define Check_FLT_ROUNDS if FLT_ROUNDS can assume the values 2 or 3.
+ * #define RND_PRODQUOT to use rnd_prod and rnd_quot (assembly routines
+ * that use extended-precision instructions to compute rounded
+ * products and quotients) with IBM.
+ * #define ROUND_BIASED for IEEE-format with biased rounding and arithmetic
+ * that rounds toward +Infinity.
+ * #define ROUND_BIASED_without_Round_Up for IEEE-format with biased
+ * rounding when the underlying floating-point arithmetic uses
+ * unbiased rounding. This prevent using ordinary floating-point
+ * arithmetic when the result could be computed with one rounding error.
+ * #define Inaccurate_Divide for IEEE-format with correctly rounded
+ * products but inaccurate quotients, e.g., for Intel i860.
+ * #define NO_LONG_LONG on machines that do not have a "long long"
+ * integer type (of >= 64 bits). On such machines, you can
+ * #define Just_16 to store 16 bits per 32-bit Long when doing
+ * high-precision integer arithmetic. Whether this speeds things
+ * up or slows things down depends on the machine and the number
+ * being converted. If long long is available and the name is
+ * something other than "long long", #define Llong to be the name,
+ * and if "unsigned Llong" does not work as an unsigned version of
+ * Llong, #define #ULLong to be the corresponding unsigned type.
+ * #define KR_headers for old-style C function headers.
+ * #define Bad_float_h if your system lacks a float.h or if it does not
+ * define some or all of DBL_DIG, DBL_MAX_10_EXP, DBL_MAX_EXP,
+ * FLT_RADIX, FLT_ROUNDS, and DBL_MAX.
+ * #define MALLOC your_malloc, where your_malloc(n) acts like malloc(n)
+ * if memory is available and otherwise does something you deem
+ * appropriate. If MALLOC is undefined, malloc will be invoked
+ * directly -- and assumed always to succeed. Similarly, if you
+ * want something other than the system's free() to be called to
+ * recycle memory acquired from MALLOC, #define FREE to be the
+ * name of the alternate routine. (FREE or free is only called in
+ * pathological cases, e.g., in a gdtoa call after a gdtoa return in
+ * mode 3 with thousands of digits requested.)
+ * #define Omit_Private_Memory to omit logic (added Jan. 1998) for making
+ * memory allocations from a private pool of memory when possible.
+ * When used, the private pool is PRIVATE_MEM bytes long: 2304 bytes,
+ * unless #defined to be a different length. This default length
+ * suffices to get rid of MALLOC calls except for unusual cases,
+ * such as decimal-to-binary conversion of a very long string of
+ * digits. When converting IEEE double precision values, the
+ * longest string gdtoa can return is about 751 bytes long. For
+ * conversions by strtod of strings of 800 digits and all gdtoa
+ * conversions of IEEE doubles in single-threaded executions with
+ * 8-byte pointers, PRIVATE_MEM >= 7400 appears to suffice; with
+ * 4-byte pointers, PRIVATE_MEM >= 7112 appears adequate.
+ * #define NO_INFNAN_CHECK if you do not wish to have INFNAN_CHECK
+ * #defined automatically on IEEE systems. On such systems,
+ * when INFNAN_CHECK is #defined, strtod checks
+ * for Infinity and NaN (case insensitively).
+ * When INFNAN_CHECK is #defined and No_Hex_NaN is not #defined,
+ * strtodg also accepts (case insensitively) strings of the form
+ * NaN(x), where x is a string of hexadecimal digits (optionally
+ * preceded by 0x or 0X) and spaces; if there is only one string
+ * of hexadecimal digits, it is taken for the fraction bits of the
+ * resulting NaN; if there are two or more strings of hexadecimal
+ * digits, each string is assigned to the next available sequence
+ * of 32-bit words of fractions bits (starting with the most
+ * significant), right-aligned in each sequence.
+ * Unless GDTOA_NON_PEDANTIC_NANCHECK is #defined, input "NaN(...)"
+ * is consumed even when ... has the wrong form (in which case the
+ * "(...)" is consumed but ignored).
+ * #define MULTIPLE_THREADS if the system offers preemptively scheduled
+ * multiple threads. In this case, you must provide (or suitably
+ * #define) two locks, acquired by ACQUIRE_DTOA_LOCK(n) and freed
+ * by FREE_DTOA_LOCK(n) for n = 0 or 1. (The second lock, accessed
+ * in pow5mult, ensures lazy evaluation of only one copy of high
+ * powers of 5; omitting this lock would introduce a small
+ * probability of wasting memory, but would otherwise be harmless.)
+ * You must also invoke freedtoa(s) to free the value s returned by
+ * dtoa. You may do so whether or not MULTIPLE_THREADS is #defined.
+ * #define IMPRECISE_INEXACT if you do not care about the setting of
+ * the STRTOG_Inexact bits in the special case of doing IEEE double
+ * precision conversions (which could also be done by the strtod in
+ * dtoa.c).
+ * #define NO_HEX_FP to disable recognition of C9x's hexadecimal
+ * floating-point constants.
+ * #define -DNO_ERRNO to suppress setting errno (in strtod.c and
+ * strtodg.c).
+ * #define NO_STRING_H to use private versions of memcpy.
+ * On some K&R systems, it may also be necessary to
+ * #define DECLARE_SIZE_T in this case.
+ * #define USE_LOCALE to use the current locale's decimal_point value.
+ */
+
+#ifndef GDTOAIMP_H_INCLUDED
+#define GDTOAIMP_H_INCLUDED
+
+#define Long int
+
+#include "gdtoa.h"
+#include "gd_qnan.h"
+#ifdef Honor_FLT_ROUNDS
+#include
+#endif
+
+#ifdef DEBUG
+#include "stdio.h"
+#define Bug(x) {fprintf(stderr, "%s\n", x); exit(1);}
+#endif
+
+#define __isthreaded 1
+#define _pthread_mutex_lock pthread_mutex_lock
+#define _pthread_mutex_unlock pthread_mutex_unlock
+
+#include "stdlib.h"
+#include "string.h"
+#include
+
+#ifdef KR_headers
+#define Char char
+#else
+#define Char void
+#endif
+
+#ifdef MALLOC
+extern Char *MALLOC ANSI((size_t));
+#else
+#define MALLOC malloc
+#endif
+
+#define INFNAN_CHECK
+#define NO_LOCALE_CACHE
+#define Honor_FLT_ROUNDS
+#define Trust_FLT_ROUNDS
+
+#undef IEEE_Arith
+#undef Avoid_Underflow
+#ifdef IEEE_MC68k
+#define IEEE_Arith
+#endif
+#ifdef IEEE_8087
+#define IEEE_Arith
+#endif
+
+#include "errno.h"
+#ifdef Bad_float_h
+
+#ifdef IEEE_Arith
+#define DBL_DIG 15
+#define DBL_MAX_10_EXP 308
+#define DBL_MAX_EXP 1024
+#define FLT_RADIX 2
+#define DBL_MAX 1.7976931348623157e+308
+#endif
+
+#ifdef IBM
+#define DBL_DIG 16
+#define DBL_MAX_10_EXP 75
+#define DBL_MAX_EXP 63
+#define FLT_RADIX 16
+#define DBL_MAX 7.2370055773322621e+75
+#endif
+
+#ifdef VAX
+#define DBL_DIG 16
+#define DBL_MAX_10_EXP 38
+#define DBL_MAX_EXP 127
+#define FLT_RADIX 2
+#define DBL_MAX 1.7014118346046923e+38
+#define n_bigtens 2
+#endif
+
+#ifndef LONG_MAX
+#define LONG_MAX 2147483647
+#endif
+
+#else /* ifndef Bad_float_h */
+#include "float.h"
+#endif /* Bad_float_h */
+
+#ifdef IEEE_Arith
+#define Scale_Bit 0x10
+#define n_bigtens 5
+#endif
+
+#ifdef IBM
+#define n_bigtens 3
+#endif
+
+#ifdef VAX
+#define n_bigtens 2
+#endif
+
+#ifndef __MATH_H__
+#include "math.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#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
+
+typedef union { double d; ULong L[2]; } U;
+
+#ifdef IEEE_8087
+#define word0(x) (x)->L[1]
+#define word1(x) (x)->L[0]
+#else
+#define word0(x) (x)->L[0]
+#define word1(x) (x)->L[1]
+#endif
+#define dval(x) (x)->d
+
+/* 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) */
+
+#ifdef IEEE_Arith
+#define Exp_shift 20
+#define Exp_shift1 20
+#define Exp_msk1 0x100000
+#define Exp_msk11 0x100000
+#define Exp_mask 0x7ff00000
+#define P 53
+#define Bias 1023
+#define Emin (-1022)
+#define Exp_1 0x3ff00000
+#define Exp_11 0x3ff00000
+#define Ebits 11
+#define Frac_mask 0xfffff
+#define Frac_mask1 0xfffff
+#define Ten_pmax 22
+#define Bletch 0x10
+#define Bndry_mask 0xfffff
+#define Bndry_mask1 0xfffff
+#define LSB 1
+#define Sign_bit 0x80000000
+#define Log2P 1
+#define Tiny0 0
+#define Tiny1 1
+#define Quick_max 14
+#define Int_max 14
+
+#ifndef Flt_Rounds
+#ifdef FLT_ROUNDS
+#define Flt_Rounds FLT_ROUNDS
+#else
+#define Flt_Rounds 1
+#endif
+#endif /*Flt_Rounds*/
+
+#else /* ifndef IEEE_Arith */
+#undef Sudden_Underflow
+#define Sudden_Underflow
+#ifdef IBM
+#undef Flt_Rounds
+#define Flt_Rounds 0
+#define Exp_shift 24
+#define Exp_shift1 24
+#define Exp_msk1 0x1000000
+#define Exp_msk11 0x1000000
+#define Exp_mask 0x7f000000
+#define P 14
+#define Bias 65
+#define Exp_1 0x41000000
+#define Exp_11 0x41000000
+#define Ebits 8 /* exponent has 7 bits, but 8 is the right value in b2d */
+#define Frac_mask 0xffffff
+#define Frac_mask1 0xffffff
+#define Bletch 4
+#define Ten_pmax 22
+#define Bndry_mask 0xefffff
+#define Bndry_mask1 0xffffff
+#define LSB 1
+#define Sign_bit 0x80000000
+#define Log2P 4
+#define Tiny0 0x100000
+#define Tiny1 0
+#define Quick_max 14
+#define Int_max 15
+#else /* VAX */
+#undef Flt_Rounds
+#define Flt_Rounds 1
+#define Exp_shift 23
+#define Exp_shift1 7
+#define Exp_msk1 0x80
+#define Exp_msk11 0x800000
+#define Exp_mask 0x7f80
+#define P 56
+#define Bias 129
+#define Exp_1 0x40800000
+#define Exp_11 0x4080
+#define Ebits 8
+#define Frac_mask 0x7fffff
+#define Frac_mask1 0xffff007f
+#define Ten_pmax 24
+#define Bletch 2
+#define Bndry_mask 0xffff007f
+#define Bndry_mask1 0xffff007f
+#define LSB 0x10000
+#define Sign_bit 0x8000
+#define Log2P 1
+#define Tiny0 0x80
+#define Tiny1 0
+#define Quick_max 15
+#define Int_max 15
+#endif /* IBM, VAX */
+#endif /* IEEE_Arith */
+
+#ifndef IEEE_Arith
+#define ROUND_BIASED
+#else
+#ifdef ROUND_BIASED_without_Round_Up
+#undef ROUND_BIASED
+#define ROUND_BIASED
+#endif
+#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 0xffffffff
+
+#undef Pack_16
+#ifndef Pack_32
+#define Pack_32
+#endif
+
+#ifdef NO_LONG_LONG
+#undef ULLong
+#ifdef Just_16
+#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
+
+#define MULTIPLE_THREADS
+extern pthread_mutex_t __gdtoa_locks[2];
+#define ACQUIRE_DTOA_LOCK(n) do { \
+ if (__isthreaded) \
+ _pthread_mutex_lock(&__gdtoa_locks[n]); \
+} while(0)
+#define FREE_DTOA_LOCK(n) do { \
+ if (__isthreaded) \
+ _pthread_mutex_unlock(&__gdtoa_locks[n]); \
+} while(0)
+
+#define Kmax 9
+
+ 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 */
+
+/*
+ * Paranoia: Protect exported symbols, including ones in files we don't
+ * compile right now. The standard strtof and strtod survive.
+ */
+#define dtoa __dtoa
+#define gdtoa __gdtoa
+#define freedtoa __freedtoa
+#define strtodg __strtodg
+#define g_ddfmt __g_ddfmt
+#define g_dfmt __g_dfmt
+#define g_ffmt __g_ffmt
+#define g_Qfmt __g_Qfmt
+#define g_xfmt __g_xfmt
+#define g_xLfmt __g_xLfmt
+#define strtoId __strtoId
+#define strtoIdd __strtoIdd
+#define strtoIf __strtoIf
+#define strtoIQ __strtoIQ
+#define strtoIx __strtoIx
+#define strtoIxL __strtoIxL
+#define strtord_l __strtord_l
+#define strtordd __strtordd
+#define strtorf __strtorf
+#define strtorQ_l __strtorQ_l
+#define strtorx_l __strtorx_l
+#define strtorxL __strtorxL
+#define strtodI __strtodI
+#define strtopd __strtopd
+#define strtopdd __strtopdd
+#define strtopf __strtopf
+#define strtopQ __strtopQ
+#define strtopx __strtopx
+#define strtopxL __strtopxL
+
+/* Protect gdtoa-internal symbols */
+#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 ANSI((int));
+ extern void Bfree ANSI((Bigint*));
+ extern void ULtof ANSI((ULong*, ULong*, Long, int));
+ extern void ULtod ANSI((ULong*, ULong*, Long, int));
+ extern void ULtodd ANSI((ULong*, ULong*, Long, int));
+ extern void ULtoQ ANSI((ULong*, ULong*, Long, int));
+ extern void ULtox ANSI((UShort*, ULong*, Long, int));
+ extern void ULtoxL ANSI((ULong*, ULong*, Long, int));
+ extern ULong any_on ANSI((Bigint*, int));
+ extern double b2d ANSI((Bigint*, int*));
+ extern int cmp ANSI((Bigint*, Bigint*));
+ extern void copybits ANSI((ULong*, int, Bigint*));
+ extern Bigint *d2b ANSI((double, int*, int*));
+ extern void decrement ANSI((Bigint*));
+ extern Bigint *diff ANSI((Bigint*, Bigint*));
+ extern char *dtoa ANSI((double d, int mode, int ndigits,
+ int *decpt, int *sign, char **rve));
+ extern void freedtoa ANSI((char*));
+ extern char *gdtoa ANSI((FPI *fpi, int be, ULong *bits, int *kindp,
+ int mode, int ndigits, int *decpt, char **rve));
+ extern char *g__fmt ANSI((char*, char*, char*, int, ULong, size_t));
+ extern int gethex ANSI((CONST char**, FPI*, Long*, Bigint**, int));
+ extern void hexdig_init_D2A(Void);
+ extern int hexnan ANSI((CONST char**, FPI*, ULong*));
+ extern int hi0bits ANSI((ULong));
+ extern Bigint *i2b ANSI((int));
+ extern Bigint *increment ANSI((Bigint*));
+ extern int lo0bits ANSI((ULong*));
+ extern Bigint *lshift ANSI((Bigint*, int));
+ extern int match ANSI((CONST char**, char*));
+ extern Bigint *mult ANSI((Bigint*, Bigint*));
+ extern Bigint *multadd ANSI((Bigint*, int, int));
+ extern char *nrv_alloc ANSI((char*, char **, int));
+ extern Bigint *pow5mult ANSI((Bigint*, int));
+ extern int quorem ANSI((Bigint*, Bigint*));
+ extern double ratio ANSI((Bigint*, Bigint*));
+ extern void rshift ANSI((Bigint*, int));
+ extern char *rv_alloc ANSI((int));
+ extern Bigint *s2b ANSI((CONST char*, int, int, ULong, int));
+ extern Bigint *set_ones ANSI((Bigint*, int));
+ extern char *strcp ANSI((char*, const char*));
+ extern int strtodg_l ANSI((CONST char*, char**, FPI*, Long*, ULong*, locale_t));
+
+ extern int strtoId ANSI((CONST char *, char **, double *, double *));
+ extern int strtoIdd ANSI((CONST char *, char **, double *, double *));
+ extern int strtoIf ANSI((CONST char *, char **, float *, float *));
+ extern int strtoIg ANSI((CONST char*, char**, FPI*, Long*, Bigint**, int*));
+ extern int strtoIQ ANSI((CONST char *, char **, void *, void *));
+ extern int strtoIx ANSI((CONST char *, char **, void *, void *));
+ extern int strtoIxL ANSI((CONST char *, char **, void *, void *));
+ extern double strtod ANSI((const char *s00, char **se));
+ extern int strtopQ ANSI((CONST char *, char **, Void *));
+ extern int strtopf ANSI((CONST char *, char **, float *));
+ extern int strtopd ANSI((CONST char *, char **, double *));
+ extern int strtopdd ANSI((CONST char *, char **, double *));
+ extern int strtopx ANSI((CONST char *, char **, Void *));
+ extern int strtopxL ANSI((CONST char *, char **, Void *));
+ extern int strtord_l ANSI((CONST char *, char **, int, double *, locale_t));
+ extern int strtordd ANSI((CONST char *, char **, int, double *));
+ extern int strtorf ANSI((CONST char *, char **, int, float *));
+ extern int strtorQ_l ANSI((CONST char *, char **, int, void *, locale_t));
+ extern int strtorx_l ANSI((CONST char *, char **, int, void *, locale_t));
+ extern int strtorxL ANSI((CONST char *, char **, int, void *));
+ extern Bigint *sum ANSI((Bigint*, Bigint*));
+ extern int trailz ANSI((Bigint*));
+ extern double ulp ANSI((U*));
+
+#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
+#ifndef NO_INFNAN_CHECK
+#undef INFNAN_CHECK
+#define INFNAN_CHECK
+#endif
+#ifdef IEEE_MC68k
+#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 */
diff --git a/contrib/gdtoa/gethex.c b/contrib/gdtoa/gethex.c
new file mode 100644
index 0000000000000000000000000000000000000000..a9982c9d33a76095a8281498749ba20072f5fab2
--- /dev/null
+++ b/contrib/gdtoa/gethex.c
@@ -0,0 +1,350 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to "."). */
+
+#include "gdtoaimp.h"
+
+#ifdef USE_LOCALE
+#include "locale.h"
+#endif
+
+ int
+#ifdef KR_headers
+gethex(sp, fpi, exp, bp, sign)
+ CONST char **sp; FPI *fpi; Long *exp; Bigint **bp; int sign;
+#else
+gethex( CONST char **sp, FPI *fpi, Long *exp, Bigint **bp, int sign)
+#endif
+{
+ Bigint *b;
+ CONST unsigned char *decpt, *s0, *s, *s1;
+ int big, esign, havedig, irv, j, k, n, n0, nbits, up, zret;
+ ULong L, lostbits, *x;
+ Long e, e1;
+#ifdef USE_LOCALE
+ int i;
+#ifdef NO_LOCALE_CACHE
+ const unsigned char *decimalpoint = (unsigned char*)localeconv()->decimal_point;
+#else
+ const unsigned char *decimalpoint;
+ static unsigned char *decimalpoint_cache;
+ if (!(s0 = decimalpoint_cache)) {
+ s0 = (unsigned char*)localeconv()->decimal_point;
+ if ((decimalpoint_cache = (char*)MALLOC(strlen(s0) + 1))) {
+ strcpy(decimalpoint_cache, s0);
+ s0 = decimalpoint_cache;
+ }
+ }
+ decimalpoint = s0;
+#endif
+#endif
+
+ if (!hexdig['0'])
+ hexdig_init_D2A();
+ *bp = 0;
+ havedig = 0;
+ s0 = *(CONST unsigned char **)sp + 2;
+ while(s0[havedig] == '0')
+ havedig++;
+ s0 += havedig;
+ s = s0;
+ decpt = 0;
+ zret = 0;
+ e = 0;
+ if (hexdig[*s])
+ havedig++;
+ else {
+ zret = 1;
+#ifdef USE_LOCALE
+ for(i = 0; decimalpoint[i]; ++i) {
+ if (s[i] != decimalpoint[i])
+ goto pcheck;
+ }
+ decpt = s += i;
+#else
+ if (*s != '.')
+ goto pcheck;
+ decpt = ++s;
+#endif
+ if (!hexdig[*s])
+ goto pcheck;
+ while(*s == '0')
+ s++;
+ if (hexdig[*s])
+ zret = 0;
+ havedig = 1;
+ s0 = s;
+ }
+ while(hexdig[*s])
+ s++;
+#ifdef USE_LOCALE
+ if (*s == *decimalpoint && !decpt) {
+ for(i = 1; decimalpoint[i]; ++i) {
+ if (s[i] != decimalpoint[i])
+ goto pcheck;
+ }
+ decpt = s += i;
+#else
+ if (*s == '.' && !decpt) {
+ decpt = ++s;
+#endif
+ while(hexdig[*s])
+ s++;
+ }/*}*/
+ if (decpt)
+ e = -(((Long)(s-decpt)) << 2);
+ pcheck:
+ s1 = s;
+ big = esign = 0;
+ switch(*s) {
+ case 'p':
+ case 'P':
+ switch(*++s) {
+ case '-':
+ esign = 1;
+ /* no break */
+ case '+':
+ s++;
+ }
+ if ((n = hexdig[*s]) == 0 || n > 0x19) {
+ s = s1;
+ break;
+ }
+ e1 = n - 0x10;
+ while((n = hexdig[*++s]) !=0 && n <= 0x19) {
+ if (e1 & 0xf8000000)
+ big = 1;
+ e1 = 10*e1 + n - 0x10;
+ }
+ if (esign)
+ e1 = -e1;
+ e += e1;
+ }
+ *sp = (char*)s;
+ if (!havedig)
+ *sp = (char*)s0 - 1;
+ if (zret)
+ return STRTOG_Zero;
+ if (big) {
+ if (esign) {
+ switch(fpi->rounding) {
+ case FPI_Round_up:
+ if (sign)
+ break;
+ goto ret_tiny;
+ case FPI_Round_down:
+ if (!sign)
+ break;
+ goto ret_tiny;
+ }
+ goto retz;
+ ret_tiny:
+ b = Balloc(0);
+ b->wds = 1;
+ b->x[0] = 1;
+ goto dret;
+ }
+ switch(fpi->rounding) {
+ case FPI_Round_near:
+ goto ovfl1;
+ case FPI_Round_up:
+ if (!sign)
+ goto ovfl1;
+ goto ret_big;
+ case FPI_Round_down:
+ if (sign)
+ goto ovfl1;
+ goto ret_big;
+ }
+ ret_big:
+ nbits = fpi->nbits;
+ n0 = n = nbits >> kshift;
+ if (nbits & kmask)
+ ++n;
+ for(j = n, k = 0; j >>= 1; ++k);
+ *bp = b = Balloc(k);
+ b->wds = n;
+ for(j = 0; j < n0; ++j)
+ b->x[j] = ALL_ON;
+ if (n > n0)
+ b->x[j] = ULbits >> (ULbits - (nbits & kmask));
+ *exp = fpi->emin;
+ return STRTOG_Normal | STRTOG_Inexlo;
+ }
+ n = s1 - s0 - 1;
+ for(k = 0; n > (1 << (kshift-2)) - 1; n >>= 1)
+ k++;
+ b = Balloc(k);
+ x = b->x;
+ n = 0;
+ L = 0;
+#ifdef USE_LOCALE
+ for(i = 0; decimalpoint[i+1]; ++i);
+#endif
+ while(s1 > s0) {
+#ifdef USE_LOCALE
+ if (*--s1 == decimalpoint[i]) {
+ s1 -= i;
+ continue;
+ }
+#else
+ if (*--s1 == '.')
+ continue;
+#endif
+ if (n == ULbits) {
+ *x++ = L;
+ L = 0;
+ n = 0;
+ }
+ L |= (hexdig[*s1] & 0x0f) << n;
+ n += 4;
+ }
+ *x++ = L;
+ b->wds = n = x - b->x;
+ n = ULbits*n - hi0bits(L);
+ nbits = fpi->nbits;
+ lostbits = 0;
+ x = b->x;
+ if (n > nbits) {
+ n -= nbits;
+ if (any_on(b,n)) {
+ lostbits = 1;
+ k = n - 1;
+ if (x[k>>kshift] & 1 << (k & kmask)) {
+ lostbits = 2;
+ if (k > 0 && any_on(b,k))
+ lostbits = 3;
+ }
+ }
+ rshift(b, n);
+ e += n;
+ }
+ else if (n < nbits) {
+ n = nbits - n;
+ b = lshift(b, n);
+ e -= n;
+ x = b->x;
+ }
+ if (e > fpi->emax) {
+ ovfl:
+ Bfree(b);
+ ovfl1:
+#ifndef NO_ERRNO
+ errno = ERANGE;
+#endif
+ return STRTOG_Infinite | STRTOG_Overflow | STRTOG_Inexhi;
+ }
+ irv = STRTOG_Normal;
+ if (e < fpi->emin) {
+ irv = STRTOG_Denormal;
+ n = fpi->emin - e;
+ if (n >= nbits) {
+ switch (fpi->rounding) {
+ case FPI_Round_near:
+ if (n == nbits && (n < 2 || any_on(b,n-1)))
+ goto one_bit;
+ break;
+ case FPI_Round_up:
+ if (!sign)
+ goto one_bit;
+ break;
+ case FPI_Round_down:
+ if (sign) {
+ one_bit:
+ x[0] = b->wds = 1;
+ dret:
+ *bp = b;
+ *exp = fpi->emin;
+#ifndef NO_ERRNO
+ errno = ERANGE;
+#endif
+ return STRTOG_Denormal | STRTOG_Inexhi
+ | STRTOG_Underflow;
+ }
+ }
+ Bfree(b);
+ retz:
+#ifndef NO_ERRNO
+ errno = ERANGE;
+#endif
+ return STRTOG_Zero | STRTOG_Inexlo | STRTOG_Underflow;
+ }
+ k = n - 1;
+ if (lostbits)
+ lostbits = 1;
+ else if (k > 0)
+ lostbits = any_on(b,k);
+ if (x[k>>kshift] & 1 << (k & kmask))
+ lostbits |= 2;
+ nbits -= n;
+ rshift(b,n);
+ e = fpi->emin;
+ }
+ if (lostbits) {
+ up = 0;
+ switch(fpi->rounding) {
+ case FPI_Round_zero:
+ break;
+ case FPI_Round_near:
+ if (lostbits & 2
+ && (lostbits | x[0]) & 1)
+ up = 1;
+ break;
+ case FPI_Round_up:
+ up = 1 - sign;
+ break;
+ case FPI_Round_down:
+ up = sign;
+ }
+ if (up) {
+ k = b->wds;
+ b = increment(b);
+ x = b->x;
+ if (irv == STRTOG_Denormal) {
+ if (nbits == fpi->nbits - 1
+ && x[nbits >> kshift] & 1 << (nbits & kmask))
+ irv = STRTOG_Normal;
+ }
+ else if (b->wds > k
+ || ((n = nbits & kmask) !=0
+ && hi0bits(x[k-1]) < 32-n)) {
+ rshift(b,1);
+ if (++e > fpi->emax)
+ goto ovfl;
+ }
+ irv |= STRTOG_Inexhi;
+ }
+ else
+ irv |= STRTOG_Inexlo;
+ }
+ *bp = b;
+ *exp = e;
+ return irv;
+ }
diff --git a/contrib/gdtoa/gmisc.c b/contrib/gdtoa/gmisc.c
new file mode 100644
index 0000000000000000000000000000000000000000..8270ef944797b8a707a33160a6207b2f3baa15be
--- /dev/null
+++ b/contrib/gdtoa/gmisc.c
@@ -0,0 +1,86 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to "."). */
+
+#include "gdtoaimp.h"
+
+ void
+#ifdef KR_headers
+rshift(b, k) Bigint *b; int k;
+#else
+rshift(Bigint *b, int k)
+#endif
+{
+ ULong *x, *x1, *xe, y;
+ int n;
+
+ x = x1 = b->x;
+ n = k >> kshift;
+ if (n < b->wds) {
+ xe = x + b->wds;
+ x += n;
+ if (k &= kmask) {
+ n = ULbits - k;
+ y = *x++ >> k;
+ while(x < xe) {
+ *x1++ = (y | (*x << n)) & ALL_ON;
+ y = *x++ >> k;
+ }
+ if ((*x1 = y) !=0)
+ x1++;
+ }
+ else
+ while(x < xe)
+ *x1++ = *x++;
+ }
+ if ((b->wds = x1 - b->x) == 0)
+ b->x[0] = 0;
+ }
+
+ int
+#ifdef KR_headers
+trailz(b) Bigint *b;
+#else
+trailz(Bigint *b)
+#endif
+{
+ ULong L, *x, *xe;
+ int n = 0;
+
+ x = b->x;
+ xe = x + b->wds;
+ for(n = 0; x < xe && !*x; x++)
+ n += ULbits;
+ if (x < xe) {
+ L = *x;
+ n += lo0bits(&L);
+ }
+ return n;
+ }
diff --git a/contrib/gdtoa/hd_init.c b/contrib/gdtoa/hd_init.c
new file mode 100644
index 0000000000000000000000000000000000000000..fa6e18dee8f4cff8f350629ce1fd4ec38ba1a676
--- /dev/null
+++ b/contrib/gdtoa/hd_init.c
@@ -0,0 +1,55 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 2000 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to "."). */
+
+#include "gdtoaimp.h"
+
+ unsigned char hexdig[256];
+
+ static void
+#ifdef KR_headers
+htinit(h, s, inc) unsigned char *h; unsigned char *s; int inc;
+#else
+htinit(unsigned char *h, unsigned char *s, int inc)
+#endif
+{
+ int i, j;
+ for(i = 0; (j = s[i]) !=0; i++)
+ h[j] = i + inc;
+ }
+
+ void
+hexdig_init_D2A(Void)
+{
+#define USC (unsigned char *)
+ htinit(hexdig, USC "0123456789", 0x10);
+ htinit(hexdig, USC "abcdef", 0x10 + 10);
+ htinit(hexdig, USC "ABCDEF", 0x10 + 10);
+ }
diff --git a/contrib/gdtoa/hexnan.c b/contrib/gdtoa/hexnan.c
new file mode 100644
index 0000000000000000000000000000000000000000..a443721f52dd17319893bb83af20d654a3ee2d76
--- /dev/null
+++ b/contrib/gdtoa/hexnan.c
@@ -0,0 +1,150 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 2000 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to "."). */
+
+#include "gdtoaimp.h"
+
+ static void
+#ifdef KR_headers
+L_shift(x, x1, i) ULong *x; ULong *x1; int i;
+#else
+L_shift(ULong *x, ULong *x1, int i)
+#endif
+{
+ int j;
+
+ i = 8 - i;
+ i <<= 2;
+ j = ULbits - i;
+ do {
+ *x |= x[1] << j;
+ x[1] >>= i;
+ } while(++x < x1);
+ }
+
+ int
+#ifdef KR_headers
+hexnan(sp, fpi, x0)
+ CONST char **sp; FPI *fpi; ULong *x0;
+#else
+hexnan( CONST char **sp, FPI *fpi, ULong *x0)
+#endif
+{
+ ULong c, h, *x, *x1, *xe;
+ CONST char *s;
+ int havedig, hd0, i, nbits;
+
+ if (!hexdig['0'])
+ hexdig_init_D2A();
+ nbits = fpi->nbits;
+ x = x0 + (nbits >> kshift);
+ if (nbits & kmask)
+ x++;
+ *--x = 0;
+ x1 = xe = x;
+ havedig = hd0 = i = 0;
+ s = *sp;
+ /* allow optional initial 0x or 0X */
+ while((c = *(CONST unsigned char*)(s+1)) && c <= ' ')
+ ++s;
+ if (s[1] == '0' && (s[2] == 'x' || s[2] == 'X')
+ && *(CONST unsigned char*)(s+3) > ' ')
+ s += 2;
+ while((c = *(CONST unsigned char*)++s)) {
+ if (!(h = hexdig[c])) {
+ if (c <= ' ') {
+ if (hd0 < havedig) {
+ if (x < x1 && i < 8)
+ L_shift(x, x1, i);
+ if (x <= x0) {
+ i = 8;
+ continue;
+ }
+ hd0 = havedig;
+ *--x = 0;
+ x1 = x;
+ i = 0;
+ }
+ while(*(CONST unsigned char*)(s+1) <= ' ')
+ ++s;
+ if (s[1] == '0' && (s[2] == 'x' || s[2] == 'X')
+ && *(CONST unsigned char*)(s+3) > ' ')
+ s += 2;
+ continue;
+ }
+ if (/*(*/ c == ')' && havedig) {
+ *sp = s + 1;
+ break;
+ }
+#ifndef GDTOA_NON_PEDANTIC_NANCHECK
+ do {
+ if (/*(*/ c == ')') {
+ *sp = s + 1;
+ break;
+ }
+ } while((c = *++s));
+#endif
+ return STRTOG_NaN;
+ }
+ havedig++;
+ if (++i > 8) {
+ if (x <= x0)
+ continue;
+ i = 1;
+ *--x = 0;
+ }
+ *x = (*x << 4) | (h & 0xf);
+ }
+ if (!havedig)
+ return STRTOG_NaN;
+ if (x < x1 && i < 8)
+ L_shift(x, x1, i);
+ if (x > x0) {
+ x1 = x0;
+ do *x1++ = *x++;
+ while(x <= xe);
+ do *x1++ = 0;
+ while(x1 <= xe);
+ }
+ else {
+ /* truncate high-order word if necessary */
+ if ( (i = nbits & (ULbits-1)) !=0)
+ *xe &= ((ULong)0xffffffff) >> (ULbits - i);
+ }
+ for(x1 = xe;; --x1) {
+ if (*x1 != 0)
+ break;
+ if (x1 == x0) {
+ *x1 = 1;
+ break;
+ }
+ }
+ return STRTOG_NaNbits;
+ }
diff --git a/contrib/gdtoa/misc.c b/contrib/gdtoa/misc.c
new file mode 100644
index 0000000000000000000000000000000000000000..e5f7b046b2e87bdffae3adbf6c19a9b33125f4ce
--- /dev/null
+++ b/contrib/gdtoa/misc.c
@@ -0,0 +1,875 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998, 1999 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to "."). */
+
+#include "gdtoaimp.h"
+
+ static Bigint *freelist[Kmax+1];
+#ifndef Omit_Private_Memory
+#ifndef PRIVATE_MEM
+#define PRIVATE_MEM 2304
+#endif
+#define PRIVATE_mem ((PRIVATE_MEM+sizeof(double)-1)/sizeof(double))
+static double private_mem[PRIVATE_mem], *pmem_next = private_mem;
+#endif
+
+ Bigint *
+Balloc
+#ifdef KR_headers
+ (k) int k;
+#else
+ (int k)
+#endif
+{
+ int x;
+ Bigint *rv;
+#ifndef Omit_Private_Memory
+ unsigned int len;
+#endif
+
+ ACQUIRE_DTOA_LOCK(0);
+ /* The k > Kmax case does not need ACQUIRE_DTOA_LOCK(0), */
+ /* but this case seems very unlikely. */
+ if (k <= Kmax && (rv = freelist[k]) !=0) {
+ freelist[k] = rv->next;
+ }
+ else {
+ x = 1 << k;
+#ifdef Omit_Private_Memory
+ rv = (Bigint *)MALLOC(sizeof(Bigint) + (x-1)*sizeof(ULong));
+#else
+ len = (sizeof(Bigint) + (x-1)*sizeof(ULong) + sizeof(double) - 1)
+ /sizeof(double);
+ if (k <= Kmax && pmem_next - private_mem + len <= PRIVATE_mem) {
+ rv = (Bigint*)pmem_next;
+ pmem_next += len;
+ }
+ else
+ rv = (Bigint*)MALLOC(len*sizeof(double));
+#endif
+ rv->k = k;
+ rv->maxwds = x;
+ }
+ FREE_DTOA_LOCK(0);
+ rv->sign = rv->wds = 0;
+ return rv;
+ }
+
+ void
+Bfree
+#ifdef KR_headers
+ (v) Bigint *v;
+#else
+ (Bigint *v)
+#endif
+{
+ if (v) {
+ if (v->k > Kmax)
+#ifdef FREE
+ FREE((void*)v);
+#else
+ free((void*)v);
+#endif
+ else {
+ ACQUIRE_DTOA_LOCK(0);
+ v->next = freelist[v->k];
+ freelist[v->k] = v;
+ FREE_DTOA_LOCK(0);
+ }
+ }
+ }
+
+ int
+lo0bits
+#ifdef KR_headers
+ (y) ULong *y;
+#else
+ (ULong *y)
+#endif
+{
+ int k;
+ ULong x = *y;
+
+ if (x & 7) {
+ if (x & 1)
+ return 0;
+ if (x & 2) {
+ *y = x >> 1;
+ return 1;
+ }
+ *y = x >> 2;
+ return 2;
+ }
+ k = 0;
+ if (!(x & 0xffff)) {
+ k = 16;
+ x >>= 16;
+ }
+ if (!(x & 0xff)) {
+ k += 8;
+ x >>= 8;
+ }
+ if (!(x & 0xf)) {
+ k += 4;
+ x >>= 4;
+ }
+ if (!(x & 0x3)) {
+ k += 2;
+ x >>= 2;
+ }
+ if (!(x & 1)) {
+ k++;
+ x >>= 1;
+ if (!x)
+ return 32;
+ }
+ *y = x;
+ return k;
+ }
+
+ Bigint *
+multadd
+#ifdef KR_headers
+ (b, m, a) Bigint *b; int m, a;
+#else
+ (Bigint *b, int m, int a) /* multiply by m and add a */
+#endif
+{
+ int i, wds;
+#ifdef ULLong
+ ULong *x;
+ ULLong carry, y;
+#else
+ ULong carry, *x, y;
+#ifdef Pack_32
+ ULong xi, z;
+#endif
+#endif
+ Bigint *b1;
+
+ wds = b->wds;
+ x = b->x;
+ i = 0;
+ carry = a;
+ do {
+#ifdef ULLong
+ y = *x * (ULLong)m + carry;
+ carry = y >> 32;
+ *x++ = y & 0xffffffffUL;
+#else
+#ifdef Pack_32
+ xi = *x;
+ y = (xi & 0xffff) * m + carry;
+ z = (xi >> 16) * m + (y >> 16);
+ carry = z >> 16;
+ *x++ = (z << 16) + (y & 0xffff);
+#else
+ y = *x * m + carry;
+ carry = y >> 16;
+ *x++ = y & 0xffff;
+#endif
+#endif
+ }
+ while(++i < wds);
+ if (carry) {
+ if (wds >= b->maxwds) {
+ b1 = Balloc(b->k+1);
+ Bcopy(b1, b);
+ Bfree(b);
+ b = b1;
+ }
+ b->x[wds++] = carry;
+ b->wds = wds;
+ }
+ return b;
+ }
+
+ int
+hi0bits_D2A
+#ifdef KR_headers
+ (x) ULong x;
+#else
+ (ULong x)
+#endif
+{
+ int k = 0;
+
+ if (!(x & 0xffff0000)) {
+ k = 16;
+ x <<= 16;
+ }
+ if (!(x & 0xff000000)) {
+ k += 8;
+ x <<= 8;
+ }
+ if (!(x & 0xf0000000)) {
+ k += 4;
+ x <<= 4;
+ }
+ if (!(x & 0xc0000000)) {
+ k += 2;
+ x <<= 2;
+ }
+ if (!(x & 0x80000000)) {
+ k++;
+ if (!(x & 0x40000000))
+ return 32;
+ }
+ return k;
+ }
+
+ Bigint *
+i2b
+#ifdef KR_headers
+ (i) int i;
+#else
+ (int i)
+#endif
+{
+ Bigint *b;
+
+ b = Balloc(1);
+ b->x[0] = i;
+ b->wds = 1;
+ return b;
+ }
+
+ Bigint *
+mult
+#ifdef KR_headers
+ (a, b) Bigint *a, *b;
+#else
+ (Bigint *a, Bigint *b)
+#endif
+{
+ Bigint *c;
+ int k, wa, wb, wc;
+ ULong *x, *xa, *xae, *xb, *xbe, *xc, *xc0;
+ ULong y;
+#ifdef ULLong
+ ULLong carry, z;
+#else
+ ULong carry, z;
+#ifdef Pack_32
+ ULong z2;
+#endif
+#endif
+
+ if (a->wds < b->wds) {
+ c = a;
+ a = b;
+ b = c;
+ }
+ k = a->k;
+ wa = a->wds;
+ wb = b->wds;
+ wc = wa + wb;
+ if (wc > a->maxwds)
+ k++;
+ c = Balloc(k);
+ for(x = c->x, xa = x + wc; x < xa; x++)
+ *x = 0;
+ xa = a->x;
+ xae = xa + wa;
+ xb = b->x;
+ xbe = xb + wb;
+ xc0 = c->x;
+#ifdef ULLong
+ for(; xb < xbe; xc0++) {
+ if ( (y = *xb++) !=0) {
+ x = xa;
+ xc = xc0;
+ carry = 0;
+ do {
+ z = *x++ * (ULLong)y + *xc + carry;
+ carry = z >> 32;
+ *xc++ = z & 0xffffffffUL;
+ }
+ while(x < xae);
+ *xc = carry;
+ }
+ }
+#else
+#ifdef Pack_32
+ for(; xb < xbe; xb++, xc0++) {
+ if ( (y = *xb & 0xffff) !=0) {
+ x = xa;
+ xc = xc0;
+ carry = 0;
+ do {
+ z = (*x & 0xffff) * y + (*xc & 0xffff) + carry;
+ carry = z >> 16;
+ z2 = (*x++ >> 16) * y + (*xc >> 16) + carry;
+ carry = z2 >> 16;
+ Storeinc(xc, z2, z);
+ }
+ while(x < xae);
+ *xc = carry;
+ }
+ if ( (y = *xb >> 16) !=0) {
+ x = xa;
+ xc = xc0;
+ carry = 0;
+ z2 = *xc;
+ do {
+ z = (*x & 0xffff) * y + (*xc >> 16) + carry;
+ carry = z >> 16;
+ Storeinc(xc, z, z2);
+ z2 = (*x++ >> 16) * y + (*xc & 0xffff) + carry;
+ carry = z2 >> 16;
+ }
+ while(x < xae);
+ *xc = z2;
+ }
+ }
+#else
+ for(; xb < xbe; xc0++) {
+ if ( (y = *xb++) !=0) {
+ x = xa;
+ xc = xc0;
+ carry = 0;
+ do {
+ z = *x++ * y + *xc + carry;
+ carry = z >> 16;
+ *xc++ = z & 0xffff;
+ }
+ while(x < xae);
+ *xc = carry;
+ }
+ }
+#endif
+#endif
+ for(xc0 = c->x, xc = xc0 + wc; wc > 0 && !*--xc; --wc) ;
+ c->wds = wc;
+ return c;
+ }
+
+ static Bigint *p5s;
+
+ Bigint *
+pow5mult
+#ifdef KR_headers
+ (b, k) Bigint *b; int k;
+#else
+ (Bigint *b, int k)
+#endif
+{
+ Bigint *b1, *p5, *p51;
+ int i;
+ static int p05[3] = { 5, 25, 125 };
+
+ if ( (i = k & 3) !=0)
+ b = multadd(b, p05[i-1], 0);
+
+ if (!(k >>= 2))
+ return b;
+ if ((p5 = p5s) == 0) {
+ /* first time */
+#ifdef MULTIPLE_THREADS
+ ACQUIRE_DTOA_LOCK(1);
+ if (!(p5 = p5s)) {
+ p5 = p5s = i2b(625);
+ p5->next = 0;
+ }
+ FREE_DTOA_LOCK(1);
+#else
+ p5 = p5s = i2b(625);
+ p5->next = 0;
+#endif
+ }
+ for(;;) {
+ if (k & 1) {
+ b1 = mult(b, p5);
+ Bfree(b);
+ b = b1;
+ }
+ if (!(k >>= 1))
+ break;
+ if ((p51 = p5->next) == 0) {
+#ifdef MULTIPLE_THREADS
+ ACQUIRE_DTOA_LOCK(1);
+ if (!(p51 = p5->next)) {
+ p51 = p5->next = mult(p5,p5);
+ p51->next = 0;
+ }
+ FREE_DTOA_LOCK(1);
+#else
+ p51 = p5->next = mult(p5,p5);
+ p51->next = 0;
+#endif
+ }
+ p5 = p51;
+ }
+ return b;
+ }
+
+ Bigint *
+lshift
+#ifdef KR_headers
+ (b, k) Bigint *b; int k;
+#else
+ (Bigint *b, int k)
+#endif
+{
+ int i, k1, n, n1;
+ Bigint *b1;
+ ULong *x, *x1, *xe, z;
+
+ n = k >> kshift;
+ k1 = b->k;
+ n1 = n + b->wds + 1;
+ for(i = b->maxwds; n1 > i; i <<= 1)
+ k1++;
+ b1 = Balloc(k1);
+ x1 = b1->x;
+ for(i = 0; i < n; i++)
+ *x1++ = 0;
+ x = b->x;
+ xe = x + b->wds;
+ if (k &= kmask) {
+#ifdef Pack_32
+ k1 = 32 - k;
+ z = 0;
+ do {
+ *x1++ = *x << k | z;
+ z = *x++ >> k1;
+ }
+ while(x < xe);
+ if ((*x1 = z) !=0)
+ ++n1;
+#else
+ k1 = 16 - k;
+ z = 0;
+ do {
+ *x1++ = *x << k & 0xffff | z;
+ z = *x++ >> k1;
+ }
+ while(x < xe);
+ if (*x1 = z)
+ ++n1;
+#endif
+ }
+ else do
+ *x1++ = *x++;
+ while(x < xe);
+ b1->wds = n1 - 1;
+ Bfree(b);
+ return b1;
+ }
+
+ int
+cmp
+#ifdef KR_headers
+ (a, b) Bigint *a, *b;
+#else
+ (Bigint *a, Bigint *b)
+#endif
+{
+ ULong *xa, *xa0, *xb, *xb0;
+ int i, j;
+
+ i = a->wds;
+ j = b->wds;
+#ifdef DEBUG
+ if (i > 1 && !a->x[i-1])
+ Bug("cmp called with a->x[a->wds-1] == 0");
+ if (j > 1 && !b->x[j-1])
+ Bug("cmp called with b->x[b->wds-1] == 0");
+#endif
+ if (i -= j)
+ return i;
+ xa0 = a->x;
+ xa = xa0 + j;
+ xb0 = b->x;
+ xb = xb0 + j;
+ for(;;) {
+ if (*--xa != *--xb)
+ return *xa < *xb ? -1 : 1;
+ if (xa <= xa0)
+ break;
+ }
+ return 0;
+ }
+
+ Bigint *
+diff
+#ifdef KR_headers
+ (a, b) Bigint *a, *b;
+#else
+ (Bigint *a, Bigint *b)
+#endif
+{
+ Bigint *c;
+ int i, wa, wb;
+ ULong *xa, *xae, *xb, *xbe, *xc;
+#ifdef ULLong
+ ULLong borrow, y;
+#else
+ ULong borrow, y;
+#ifdef Pack_32
+ ULong z;
+#endif
+#endif
+
+ i = cmp(a,b);
+ if (!i) {
+ c = Balloc(0);
+ c->wds = 1;
+ c->x[0] = 0;
+ return c;
+ }
+ if (i < 0) {
+ c = a;
+ a = b;
+ b = c;
+ i = 1;
+ }
+ else
+ i = 0;
+ c = Balloc(a->k);
+ c->sign = i;
+ wa = a->wds;
+ xa = a->x;
+ xae = xa + wa;
+ wb = b->wds;
+ xb = b->x;
+ xbe = xb + wb;
+ xc = c->x;
+ borrow = 0;
+#ifdef ULLong
+ do {
+ y = (ULLong)*xa++ - *xb++ - borrow;
+ borrow = y >> 32 & 1UL;
+ *xc++ = y & 0xffffffffUL;
+ }
+ while(xb < xbe);
+ while(xa < xae) {
+ y = *xa++ - borrow;
+ borrow = y >> 32 & 1UL;
+ *xc++ = y & 0xffffffffUL;
+ }
+#else
+#ifdef Pack_32
+ do {
+ y = (*xa & 0xffff) - (*xb & 0xffff) - borrow;
+ borrow = (y & 0x10000) >> 16;
+ z = (*xa++ >> 16) - (*xb++ >> 16) - borrow;
+ borrow = (z & 0x10000) >> 16;
+ Storeinc(xc, z, y);
+ }
+ while(xb < xbe);
+ while(xa < xae) {
+ y = (*xa & 0xffff) - borrow;
+ borrow = (y & 0x10000) >> 16;
+ z = (*xa++ >> 16) - borrow;
+ borrow = (z & 0x10000) >> 16;
+ Storeinc(xc, z, y);
+ }
+#else
+ do {
+ y = *xa++ - *xb++ - borrow;
+ borrow = (y & 0x10000) >> 16;
+ *xc++ = y & 0xffff;
+ }
+ while(xb < xbe);
+ while(xa < xae) {
+ y = *xa++ - borrow;
+ borrow = (y & 0x10000) >> 16;
+ *xc++ = y & 0xffff;
+ }
+#endif
+#endif
+ while(!*--xc)
+ wa--;
+ c->wds = wa;
+ return c;
+ }
+
+ double
+b2d
+#ifdef KR_headers
+ (a, e) Bigint *a; int *e;
+#else
+ (Bigint *a, int *e)
+#endif
+{
+ ULong *xa, *xa0, w, y, z;
+ int k;
+ U d;
+#ifdef VAX
+ ULong d0, d1;
+#else
+#define d0 word0(&d)
+#define d1 word1(&d)
+#endif
+
+ xa0 = a->x;
+ xa = xa0 + a->wds;
+ y = *--xa;
+#ifdef DEBUG
+ if (!y) Bug("zero y in b2d");
+#endif
+ k = hi0bits(y);
+ *e = 32 - k;
+#ifdef Pack_32
+ if (k < Ebits) {
+ d0 = Exp_1 | y >> (Ebits - k);
+ w = xa > xa0 ? *--xa : 0;
+ d1 = y << ((32-Ebits) + k) | w >> (Ebits - k);
+ goto ret_d;
+ }
+ z = xa > xa0 ? *--xa : 0;
+ if (k -= Ebits) {
+ d0 = Exp_1 | y << k | z >> (32 - k);
+ y = xa > xa0 ? *--xa : 0;
+ d1 = z << k | y >> (32 - k);
+ }
+ else {
+ d0 = Exp_1 | y;
+ d1 = z;
+ }
+#else
+ if (k < Ebits + 16) {
+ z = xa > xa0 ? *--xa : 0;
+ d0 = Exp_1 | y << k - Ebits | z >> Ebits + 16 - k;
+ w = xa > xa0 ? *--xa : 0;
+ y = xa > xa0 ? *--xa : 0;
+ d1 = z << k + 16 - Ebits | w << k - Ebits | y >> 16 + Ebits - k;
+ goto ret_d;
+ }
+ z = xa > xa0 ? *--xa : 0;
+ w = xa > xa0 ? *--xa : 0;
+ k -= Ebits + 16;
+ d0 = Exp_1 | y << k + 16 | z << k | w >> 16 - k;
+ y = xa > xa0 ? *--xa : 0;
+ d1 = w << k + 16 | y << k;
+#endif
+ ret_d:
+#ifdef VAX
+ word0(&d) = d0 >> 16 | d0 << 16;
+ word1(&d) = d1 >> 16 | d1 << 16;
+#endif
+ return dval(&d);
+ }
+#undef d0
+#undef d1
+
+ Bigint *
+d2b
+#ifdef KR_headers
+ (dd, e, bits) double dd; int *e, *bits;
+#else
+ (double dd, int *e, int *bits)
+#endif
+{
+ Bigint *b;
+ U d;
+#ifndef Sudden_Underflow
+ int i;
+#endif
+ int de, k;
+ ULong *x, y, z;
+#ifdef VAX
+ ULong d0, d1;
+#else
+#define d0 word0(&d)
+#define d1 word1(&d)
+#endif
+ d.d = dd;
+#ifdef VAX
+ d0 = word0(&d) >> 16 | word0(&d) << 16;
+ d1 = word1(&d) >> 16 | word1(&d) << 16;
+#endif
+
+#ifdef Pack_32
+ b = Balloc(1);
+#else
+ b = Balloc(2);
+#endif
+ x = b->x;
+
+ z = d0 & Frac_mask;
+ d0 &= 0x7fffffff; /* clear sign bit, which we ignore */
+#ifdef Sudden_Underflow
+ de = (int)(d0 >> Exp_shift);
+#ifndef IBM
+ z |= Exp_msk11;
+#endif
+#else
+ if ( (de = (int)(d0 >> Exp_shift)) !=0)
+ z |= Exp_msk1;
+#endif
+#ifdef Pack_32
+ if ( (y = d1) !=0) {
+ if ( (k = lo0bits(&y)) !=0) {
+ x[0] = y | z << (32 - k);
+ z >>= k;
+ }
+ else
+ x[0] = y;
+#ifndef Sudden_Underflow
+ i =
+#endif
+ b->wds = (x[1] = z) !=0 ? 2 : 1;
+ }
+ else {
+ k = lo0bits(&z);
+ x[0] = z;
+#ifndef Sudden_Underflow
+ i =
+#endif
+ b->wds = 1;
+ k += 32;
+ }
+#else
+ if ( (y = d1) !=0) {
+ if ( (k = lo0bits(&y)) !=0)
+ if (k >= 16) {
+ x[0] = y | z << 32 - k & 0xffff;
+ x[1] = z >> k - 16 & 0xffff;
+ x[2] = z >> k;
+ i = 2;
+ }
+ else {
+ x[0] = y & 0xffff;
+ x[1] = y >> 16 | z << 16 - k & 0xffff;
+ x[2] = z >> k & 0xffff;
+ x[3] = z >> k+16;
+ i = 3;
+ }
+ else {
+ x[0] = y & 0xffff;
+ x[1] = y >> 16;
+ x[2] = z & 0xffff;
+ x[3] = z >> 16;
+ i = 3;
+ }
+ }
+ else {
+#ifdef DEBUG
+ if (!z)
+ Bug("Zero passed to d2b");
+#endif
+ k = lo0bits(&z);
+ if (k >= 16) {
+ x[0] = z;
+ i = 0;
+ }
+ else {
+ x[0] = z & 0xffff;
+ x[1] = z >> 16;
+ i = 1;
+ }
+ k += 32;
+ }
+ while(!x[i])
+ --i;
+ b->wds = i + 1;
+#endif
+#ifndef Sudden_Underflow
+ if (de) {
+#endif
+#ifdef IBM
+ *e = (de - Bias - (P-1) << 2) + k;
+ *bits = 4*P + 8 - k - hi0bits(word0(&d) & Frac_mask);
+#else
+ *e = de - Bias - (P-1) + k;
+ *bits = P - k;
+#endif
+#ifndef Sudden_Underflow
+ }
+ else {
+ *e = de - Bias - (P-1) + 1 + k;
+#ifdef Pack_32
+ *bits = 32*i - hi0bits(x[i-1]);
+#else
+ *bits = (i+2)*16 - hi0bits(x[i]);
+#endif
+ }
+#endif
+ return b;
+ }
+#undef d0
+#undef d1
+
+ CONST double
+#ifdef IEEE_Arith
+bigtens[] = { 1e16, 1e32, 1e64, 1e128, 1e256 };
+CONST double tinytens[] = { 1e-16, 1e-32, 1e-64, 1e-128, 1e-256
+ };
+#else
+#ifdef IBM
+bigtens[] = { 1e16, 1e32, 1e64 };
+CONST double tinytens[] = { 1e-16, 1e-32, 1e-64 };
+#else
+bigtens[] = { 1e16, 1e32 };
+CONST double tinytens[] = { 1e-16, 1e-32 };
+#endif
+#endif
+
+ CONST double
+tens[] = {
+ 1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9,
+ 1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19,
+ 1e20, 1e21, 1e22
+#ifdef VAX
+ , 1e23, 1e24
+#endif
+ };
+
+ char *
+#ifdef KR_headers
+strcp_D2A(a, b) char *a; char *b;
+#else
+strcp_D2A(char *a, CONST char *b)
+#endif
+{
+ while((*a = *b++))
+ a++;
+ return a;
+ }
+
+#ifdef NO_STRING_H
+
+ Char *
+#ifdef KR_headers
+memcpy_D2A(a, b, len) Char *a; Char *b; size_t len;
+#else
+memcpy_D2A(void *a1, void *b1, size_t len)
+#endif
+{
+ char *a = (char*)a1, *ae = a + len;
+ char *b = (char*)b1, *a0 = a;
+ while(a < ae)
+ *a++ = *b++;
+ return a0;
+ }
+
+#endif /* NO_STRING_H */
diff --git a/contrib/gdtoa/smisc.c b/contrib/gdtoa/smisc.c
new file mode 100644
index 0000000000000000000000000000000000000000..f4dbafb21c5f7c37f7f3f87e9ce943fecffd2a9e
--- /dev/null
+++ b/contrib/gdtoa/smisc.c
@@ -0,0 +1,191 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998, 1999 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to "."). */
+
+#include "gdtoaimp.h"
+
+ Bigint *
+s2b
+#ifdef KR_headers
+ (s, nd0, nd, y9, dplen) CONST char *s; int dplen, nd0, nd; ULong y9;
+#else
+ (CONST char *s, int nd0, int nd, ULong y9, int dplen)
+#endif
+{
+ Bigint *b;
+ int i, k;
+ Long x, y;
+
+ x = (nd + 8) / 9;
+ for(k = 0, y = 1; x > y; y <<= 1, k++) ;
+#ifdef Pack_32
+ b = Balloc(k);
+ b->x[0] = y9;
+ b->wds = 1;
+#else
+ b = Balloc(k+1);
+ b->x[0] = y9 & 0xffff;
+ b->wds = (b->x[1] = y9 >> 16) ? 2 : 1;
+#endif
+
+ i = 9;
+ if (9 < nd0) {
+ s += 9;
+ do b = multadd(b, 10, *s++ - '0');
+ while(++i < nd0);
+ s += dplen;
+ }
+ else
+ s += dplen + 9;
+ for(; i < nd; i++)
+ b = multadd(b, 10, *s++ - '0');
+ return b;
+ }
+
+ double
+ratio
+#ifdef KR_headers
+ (a, b) Bigint *a, *b;
+#else
+ (Bigint *a, Bigint *b)
+#endif
+{
+ U da, db;
+ int k, ka, kb;
+
+ dval(&da) = b2d(a, &ka);
+ dval(&db) = b2d(b, &kb);
+ k = ka - kb + ULbits*(a->wds - b->wds);
+#ifdef IBM
+ if (k > 0) {
+ word0(&da) += (k >> 2)*Exp_msk1;
+ if (k &= 3)
+ dval(&da) *= 1 << k;
+ }
+ else {
+ k = -k;
+ word0(&db) += (k >> 2)*Exp_msk1;
+ if (k &= 3)
+ dval(&db) *= 1 << k;
+ }
+#else
+ if (k > 0)
+ word0(&da) += k*Exp_msk1;
+ else {
+ k = -k;
+ word0(&db) += k*Exp_msk1;
+ }
+#endif
+ return dval(&da) / dval(&db);
+ }
+
+#ifdef INFNAN_CHECK
+
+ int
+match
+#ifdef KR_headers
+ (sp, t) char **sp, *t;
+#else
+ (CONST char **sp, char *t)
+#endif
+{
+ int c, d;
+ CONST char *s = *sp;
+
+ while( (d = *t++) !=0) {
+ if ((c = *++s) >= 'A' && c <= 'Z')
+ c += 'a' - 'A';
+ if (c != d)
+ return 0;
+ }
+ *sp = s + 1;
+ return 1;
+ }
+#endif /* INFNAN_CHECK */
+
+ void
+#ifdef KR_headers
+copybits(c, n, b) ULong *c; int n; Bigint *b;
+#else
+copybits(ULong *c, int n, Bigint *b)
+#endif
+{
+ ULong *ce, *x, *xe;
+#ifdef Pack_16
+ int nw, nw1;
+#endif
+
+ ce = c + ((n-1) >> kshift) + 1;
+ x = b->x;
+#ifdef Pack_32
+ xe = x + b->wds;
+ while(x < xe)
+ *c++ = *x++;
+#else
+ nw = b->wds;
+ nw1 = nw & 1;
+ for(xe = x + (nw - nw1); x < xe; x += 2)
+ Storeinc(c, x[1], x[0]);
+ if (nw1)
+ *c++ = *x;
+#endif
+ while(c < ce)
+ *c++ = 0;
+ }
+
+ ULong
+#ifdef KR_headers
+any_on(b, k) Bigint *b; int k;
+#else
+any_on(Bigint *b, int k)
+#endif
+{
+ int n, nwds;
+ ULong *x, *x0, x1, x2;
+
+ x = b->x;
+ nwds = b->wds;
+ n = k >> kshift;
+ if (n > nwds)
+ n = nwds;
+ else if (n < nwds && (k &= kmask)) {
+ x1 = x2 = x[n];
+ x1 >>= k;
+ x1 <<= k;
+ if (x1 != x2)
+ return 1;
+ }
+ x0 = x;
+ x += n;
+ while(x > x0)
+ if (*--x)
+ return 1;
+ return 0;
+ }
diff --git a/contrib/gdtoa/strtod.c b/contrib/gdtoa/strtod.c
new file mode 100644
index 0000000000000000000000000000000000000000..12c66f9e811e39d69d5fc2a8d5ef90812ca514f5
--- /dev/null
+++ b/contrib/gdtoa/strtod.c
@@ -0,0 +1,1087 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998-2001 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to "."). */
+
+/* $FreeBSD$ */
+
+#include "gdtoaimp.h"
+#ifndef NO_FENV_H
+#include
+#endif
+
+#ifdef USE_LOCALE
+#include "locale.h"
+#endif
+
+#ifdef IEEE_Arith
+#ifndef NO_IEEE_Scale
+#define Avoid_Underflow
+#undef tinytens
+/* The factor of 2^106 in tinytens[4] helps us avoid setting the underflow */
+/* flag unnecessarily. It leads to a song and dance at the end of strtod. */
+static CONST double tinytens[] = { 1e-16, 1e-32, 1e-64, 1e-128,
+ 9007199254740992.*9007199254740992.e-256
+ };
+#endif
+#endif
+
+#ifdef Honor_FLT_ROUNDS
+#undef Check_FLT_ROUNDS
+#define Check_FLT_ROUNDS
+#else
+#define Rounding Flt_Rounds
+#endif
+
+#ifdef Avoid_Underflow /*{*/
+ static double
+sulp
+#ifdef KR_headers
+ (x, scale) U *x; int scale;
+#else
+ (U *x, int scale)
+#endif
+{
+ U u;
+ double rv;
+ int i;
+
+ rv = ulp(x);
+ if (!scale || (i = 2*P + 1 - ((word0(x) & Exp_mask) >> Exp_shift)) <= 0)
+ return rv; /* Is there an example where i <= 0 ? */
+ word0(&u) = Exp_1 + (i << Exp_shift);
+ word1(&u) = 0;
+ return rv * u.d;
+ }
+#endif /*}*/
+
+static double
+strtod_l
+#ifdef KR_headers
+ (s00, se, loc) CONST char *s00; char **se; locale_t loc
+#else
+ (CONST char *s00, char **se, locale_t loc)
+#endif
+{
+#ifdef Avoid_Underflow
+ int scale;
+#endif
+ int bb2, bb5, bbe, bd2, bd5, bbbits, bs2, c, decpt, dsign,
+ e, e1, esign, i, j, k, nd, nd0, nf, nz, nz0, sign;
+ CONST char *s, *s0, *s1;
+ double aadj;
+ Long L;
+ U adj, aadj1, rv, rv0;
+ ULong y, z;
+ Bigint *bb, *bb1, *bd, *bd0, *bs, *delta;
+#ifdef Avoid_Underflow
+ ULong Lsb, Lsb1;
+#endif
+#ifdef SET_INEXACT
+ int inexact, oldinexact;
+#endif
+#ifdef USE_LOCALE /*{{*/
+#ifdef NO_LOCALE_CACHE
+ char *decimalpoint = localeconv_l(loc)->decimal_point;
+ int dplen = strlen(decimalpoint);
+#else
+ char *decimalpoint;
+ static char *decimalpoint_cache;
+ static int dplen;
+ if (!(s0 = decimalpoint_cache)) {
+ s0 = localeconv_l(loc)->decimal_point;
+ if ((decimalpoint_cache = (char*)MALLOC(strlen(s0) + 1))) {
+ strcpy(decimalpoint_cache, s0);
+ s0 = decimalpoint_cache;
+ }
+ dplen = strlen(s0);
+ }
+ decimalpoint = (char*)s0;
+#endif /*NO_LOCALE_CACHE*/
+#else /*USE_LOCALE}{*/
+#define dplen 1
+#endif /*USE_LOCALE}}*/
+
+#ifdef Honor_FLT_ROUNDS /*{*/
+ int Rounding;
+#ifdef Trust_FLT_ROUNDS /*{{ only define this if FLT_ROUNDS really works! */
+ Rounding = Flt_Rounds;
+#else /*}{*/
+ Rounding = 1;
+ switch(fegetround()) {
+ case FE_TOWARDZERO: Rounding = 0; break;
+ case FE_UPWARD: Rounding = 2; break;
+ case FE_DOWNWARD: Rounding = 3;
+ }
+#endif /*}}*/
+#endif /*}*/
+
+ sign = nz0 = nz = decpt = 0;
+ dval(&rv) = 0.;
+ for(s = s00;;s++) switch(*s) {
+ case '-':
+ sign = 1;
+ /* no break */
+ case '+':
+ if (*++s)
+ goto break2;
+ /* no break */
+ case 0:
+ goto ret0;
+ case '\t':
+ case '\n':
+ case '\v':
+ case '\f':
+ case '\r':
+ case ' ':
+ continue;
+ default:
+ goto break2;
+ }
+ break2:
+ if (*s == '0') {
+#ifndef NO_HEX_FP /*{*/
+ {
+ static FPI fpi = { 53, 1-1023-53+1, 2046-1023-53+1, 1, SI };
+ Long exp;
+ ULong bits[2];
+ switch(s[1]) {
+ case 'x':
+ case 'X':
+ {
+#ifdef Honor_FLT_ROUNDS
+ FPI fpi1 = fpi;
+ fpi1.rounding = Rounding;
+#else
+#define fpi1 fpi
+#endif
+ switch((i = gethex(&s, &fpi1, &exp, &bb, sign)) & STRTOG_Retmask) {
+ case STRTOG_NoNumber:
+ s = s00;
+ sign = 0;
+ case STRTOG_Zero:
+ break;
+ default:
+ if (bb) {
+ copybits(bits, fpi.nbits, bb);
+ Bfree(bb);
+ }
+ ULtod(((U*)&rv)->L, bits, exp, i);
+ }}
+ goto ret;
+ }
+ }
+#endif /*}*/
+ nz0 = 1;
+ while(*++s == '0') ;
+ if (!*s)
+ goto ret;
+ }
+ s0 = s;
+ y = z = 0;
+ for(nd = nf = 0; (c = *s) >= '0' && c <= '9'; nd++, s++)
+ if (nd < 9)
+ y = 10*y + c - '0';
+ else if (nd < 16)
+ z = 10*z + c - '0';
+ nd0 = nd;
+#ifdef USE_LOCALE
+ if (c == *decimalpoint) {
+ for(i = 1; decimalpoint[i]; ++i)
+ if (s[i] != decimalpoint[i])
+ goto dig_done;
+ s += i;
+ c = *s;
+#else
+ if (c == '.') {
+ c = *++s;
+#endif
+ decpt = 1;
+ if (!nd) {
+ for(; c == '0'; c = *++s)
+ nz++;
+ if (c > '0' && c <= '9') {
+ s0 = s;
+ nf += nz;
+ nz = 0;
+ goto have_dig;
+ }
+ goto dig_done;
+ }
+ for(; c >= '0' && c <= '9'; c = *++s) {
+ have_dig:
+ nz++;
+ if (c -= '0') {
+ nf += nz;
+ for(i = 1; i < nz; i++)
+ if (nd++ < 9)
+ y *= 10;
+ else if (nd <= DBL_DIG + 1)
+ z *= 10;
+ if (nd++ < 9)
+ y = 10*y + c;
+ else if (nd <= DBL_DIG + 1)
+ z = 10*z + c;
+ nz = 0;
+ }
+ }
+ }/*}*/
+ dig_done:
+ e = 0;
+ if (c == 'e' || c == 'E') {
+ if (!nd && !nz && !nz0) {
+ goto ret0;
+ }
+ s00 = s;
+ esign = 0;
+ switch(c = *++s) {
+ case '-':
+ esign = 1;
+ case '+':
+ c = *++s;
+ }
+ if (c >= '0' && c <= '9') {
+ while(c == '0')
+ c = *++s;
+ if (c > '0' && c <= '9') {
+ L = c - '0';
+ s1 = s;
+ while((c = *++s) >= '0' && c <= '9')
+ L = 10*L + c - '0';
+ if (s - s1 > 8 || L > 19999)
+ /* Avoid confusion from exponents
+ * so large that e might overflow.
+ */
+ e = 19999; /* safe for 16 bit ints */
+ else
+ e = (int)L;
+ if (esign)
+ e = -e;
+ }
+ else
+ e = 0;
+ }
+ else
+ s = s00;
+ }
+ if (!nd) {
+ if (!nz && !nz0) {
+#ifdef INFNAN_CHECK
+ /* Check for Nan and Infinity */
+ ULong bits[2];
+ static FPI fpinan = /* only 52 explicit bits */
+ { 52, 1-1023-53+1, 2046-1023-53+1, 1, SI };
+ if (!decpt)
+ switch(c) {
+ case 'i':
+ case 'I':
+ if (match(&s,"nf")) {
+ --s;
+ if (!match(&s,"inity"))
+ ++s;
+ word0(&rv) = 0x7ff00000;
+ word1(&rv) = 0;
+ goto ret;
+ }
+ break;
+ case 'n':
+ case 'N':
+ if (match(&s, "an")) {
+#ifndef No_Hex_NaN
+ if (*s == '(' /*)*/
+ && hexnan(&s, &fpinan, bits)
+ == STRTOG_NaNbits) {
+ word0(&rv) = 0x7ff80000 | bits[1];
+ word1(&rv) = bits[0];
+ }
+ else {
+#endif
+ word0(&rv) = NAN_WORD0;
+ word1(&rv) = NAN_WORD1;
+#ifndef No_Hex_NaN
+ }
+#endif
+ goto ret;
+ }
+ }
+#endif /* INFNAN_CHECK */
+ ret0:
+ s = s00;
+ sign = 0;
+ }
+ goto ret;
+ }
+ e1 = e -= nf;
+
+ /* Now we have nd0 digits, starting at s0, followed by a
+ * decimal point, followed by nd-nd0 digits. The number we're
+ * after is the integer represented by those digits times
+ * 10**e */
+
+ if (!nd0)
+ nd0 = nd;
+ k = nd < DBL_DIG + 1 ? nd : DBL_DIG + 1;
+ dval(&rv) = y;
+ if (k > 9) {
+#ifdef SET_INEXACT
+ if (k > DBL_DIG)
+ oldinexact = get_inexact();
+#endif
+ dval(&rv) = tens[k - 9] * dval(&rv) + z;
+ }
+ bd0 = 0;
+ if (nd <= DBL_DIG
+#ifndef RND_PRODQUOT
+#ifndef Honor_FLT_ROUNDS
+ && Flt_Rounds == 1
+#endif
+#endif
+ ) {
+ if (!e)
+ goto ret;
+#ifndef ROUND_BIASED_without_Round_Up
+ if (e > 0) {
+ if (e <= Ten_pmax) {
+#ifdef VAX
+ goto vax_ovfl_check;
+#else
+#ifdef Honor_FLT_ROUNDS
+ /* round correctly FLT_ROUNDS = 2 or 3 */
+ if (sign) {
+ rv.d = -rv.d;
+ sign = 0;
+ }
+#endif
+ /* rv = */ rounded_product(dval(&rv), tens[e]);
+ goto ret;
+#endif
+ }
+ i = DBL_DIG - nd;
+ if (e <= Ten_pmax + i) {
+ /* A fancier test would sometimes let us do
+ * this for larger i values.
+ */
+#ifdef Honor_FLT_ROUNDS
+ /* round correctly FLT_ROUNDS = 2 or 3 */
+ if (sign) {
+ rv.d = -rv.d;
+ sign = 0;
+ }
+#endif
+ e -= i;
+ dval(&rv) *= tens[i];
+#ifdef VAX
+ /* VAX exponent range is so narrow we must
+ * worry about overflow here...
+ */
+ vax_ovfl_check:
+ word0(&rv) -= P*Exp_msk1;
+ /* rv = */ rounded_product(dval(&rv), tens[e]);
+ if ((word0(&rv) & Exp_mask)
+ > Exp_msk1*(DBL_MAX_EXP+Bias-1-P))
+ goto ovfl;
+ word0(&rv) += P*Exp_msk1;
+#else
+ /* rv = */ rounded_product(dval(&rv), tens[e]);
+#endif
+ goto ret;
+ }
+ }
+#ifndef Inaccurate_Divide
+ else if (e >= -Ten_pmax) {
+#ifdef Honor_FLT_ROUNDS
+ /* round correctly FLT_ROUNDS = 2 or 3 */
+ if (sign) {
+ rv.d = -rv.d;
+ sign = 0;
+ }
+#endif
+ /* rv = */ rounded_quotient(dval(&rv), tens[-e]);
+ goto ret;
+ }
+#endif
+#endif /* ROUND_BIASED_without_Round_Up */
+ }
+ e1 += nd - k;
+
+#ifdef IEEE_Arith
+#ifdef SET_INEXACT
+ inexact = 1;
+ if (k <= DBL_DIG)
+ oldinexact = get_inexact();
+#endif
+#ifdef Avoid_Underflow
+ scale = 0;
+#endif
+#ifdef Honor_FLT_ROUNDS
+ if (Rounding >= 2) {
+ if (sign)
+ Rounding = Rounding == 2 ? 0 : 2;
+ else
+ if (Rounding != 2)
+ Rounding = 0;
+ }
+#endif
+#endif /*IEEE_Arith*/
+
+ /* Get starting approximation = rv * 10**e1 */
+
+ if (e1 > 0) {
+ if ( (i = e1 & 15) !=0)
+ dval(&rv) *= tens[i];
+ if (e1 &= ~15) {
+ if (e1 > DBL_MAX_10_EXP) {
+ ovfl:
+ /* Can't trust HUGE_VAL */
+#ifdef IEEE_Arith
+#ifdef Honor_FLT_ROUNDS
+ switch(Rounding) {
+ case 0: /* toward 0 */
+ case 3: /* toward -infinity */
+ word0(&rv) = Big0;
+ word1(&rv) = Big1;
+ break;
+ default:
+ word0(&rv) = Exp_mask;
+ word1(&rv) = 0;
+ }
+#else /*Honor_FLT_ROUNDS*/
+ word0(&rv) = Exp_mask;
+ word1(&rv) = 0;
+#endif /*Honor_FLT_ROUNDS*/
+#ifdef SET_INEXACT
+ /* set overflow bit */
+ dval(&rv0) = 1e300;
+ dval(&rv0) *= dval(&rv0);
+#endif
+#else /*IEEE_Arith*/
+ word0(&rv) = Big0;
+ word1(&rv) = Big1;
+#endif /*IEEE_Arith*/
+ range_err:
+ if (bd0) {
+ Bfree(bb);
+ Bfree(bd);
+ Bfree(bs);
+ Bfree(bd0);
+ Bfree(delta);
+ }
+#ifndef NO_ERRNO
+ errno = ERANGE;
+#endif
+ goto ret;
+ }
+ e1 >>= 4;
+ for(j = 0; e1 > 1; j++, e1 >>= 1)
+ if (e1 & 1)
+ dval(&rv) *= bigtens[j];
+ /* The last multiplication could overflow. */
+ word0(&rv) -= P*Exp_msk1;
+ dval(&rv) *= bigtens[j];
+ if ((z = word0(&rv) & Exp_mask)
+ > Exp_msk1*(DBL_MAX_EXP+Bias-P))
+ goto ovfl;
+ if (z > Exp_msk1*(DBL_MAX_EXP+Bias-1-P)) {
+ /* set to largest number */
+ /* (Can't trust DBL_MAX) */
+ word0(&rv) = Big0;
+ word1(&rv) = Big1;
+ }
+ else
+ word0(&rv) += P*Exp_msk1;
+ }
+ }
+ else if (e1 < 0) {
+ e1 = -e1;
+ if ( (i = e1 & 15) !=0)
+ dval(&rv) /= tens[i];
+ if (e1 >>= 4) {
+ if (e1 >= 1 << n_bigtens)
+ goto undfl;
+#ifdef Avoid_Underflow
+ if (e1 & Scale_Bit)
+ scale = 2*P;
+ for(j = 0; e1 > 0; j++, e1 >>= 1)
+ if (e1 & 1)
+ dval(&rv) *= tinytens[j];
+ if (scale && (j = 2*P + 1 - ((word0(&rv) & Exp_mask)
+ >> Exp_shift)) > 0) {
+ /* scaled rv is denormal; zap j low bits */
+ if (j >= 32) {
+ word1(&rv) = 0;
+ if (j >= 53)
+ word0(&rv) = (P+2)*Exp_msk1;
+ else
+ word0(&rv) &= 0xffffffff << (j-32);
+ }
+ else
+ word1(&rv) &= 0xffffffff << j;
+ }
+#else
+ for(j = 0; e1 > 1; j++, e1 >>= 1)
+ if (e1 & 1)
+ dval(&rv) *= tinytens[j];
+ /* The last multiplication could underflow. */
+ dval(&rv0) = dval(&rv);
+ dval(&rv) *= tinytens[j];
+ if (!dval(&rv)) {
+ dval(&rv) = 2.*dval(&rv0);
+ dval(&rv) *= tinytens[j];
+#endif
+ if (!dval(&rv)) {
+ undfl:
+ dval(&rv) = 0.;
+ goto range_err;
+ }
+#ifndef Avoid_Underflow
+ word0(&rv) = Tiny0;
+ word1(&rv) = Tiny1;
+ /* The refinement below will clean
+ * this approximation up.
+ */
+ }
+#endif
+ }
+ }
+
+ /* Now the hard part -- adjusting rv to the correct value.*/
+
+ /* Put digits into bd: true value = bd * 10^e */
+
+ bd0 = s2b(s0, nd0, nd, y, dplen);
+
+ for(;;) {
+ bd = Balloc(bd0->k);
+ Bcopy(bd, bd0);
+ bb = d2b(dval(&rv), &bbe, &bbbits); /* rv = bb * 2^bbe */
+ bs = i2b(1);
+
+ if (e >= 0) {
+ bb2 = bb5 = 0;
+ bd2 = bd5 = e;
+ }
+ else {
+ bb2 = bb5 = -e;
+ bd2 = bd5 = 0;
+ }
+ if (bbe >= 0)
+ bb2 += bbe;
+ else
+ bd2 -= bbe;
+ bs2 = bb2;
+#ifdef Honor_FLT_ROUNDS
+ if (Rounding != 1)
+ bs2++;
+#endif
+#ifdef Avoid_Underflow
+ Lsb = LSB;
+ Lsb1 = 0;
+ j = bbe - scale;
+ i = j + bbbits - 1; /* logb(rv) */
+ j = P + 1 - bbbits;
+ if (i < Emin) { /* denormal */
+ i = Emin - i;
+ j -= i;
+ if (i < 32)
+ Lsb <<= i;
+ else
+ Lsb1 = Lsb << (i-32);
+ }
+#else /*Avoid_Underflow*/
+#ifdef Sudden_Underflow
+#ifdef IBM
+ j = 1 + 4*P - 3 - bbbits + ((bbe + bbbits - 1) & 3);
+#else
+ j = P + 1 - bbbits;
+#endif
+#else /*Sudden_Underflow*/
+ j = bbe;
+ i = j + bbbits - 1; /* logb(&rv) */
+ if (i < Emin) /* denormal */
+ j += P - Emin;
+ else
+ j = P + 1 - bbbits;
+#endif /*Sudden_Underflow*/
+#endif /*Avoid_Underflow*/
+ bb2 += j;
+ bd2 += j;
+#ifdef Avoid_Underflow
+ bd2 += scale;
+#endif
+ i = bb2 < bd2 ? bb2 : bd2;
+ if (i > bs2)
+ i = bs2;
+ if (i > 0) {
+ bb2 -= i;
+ bd2 -= i;
+ bs2 -= i;
+ }
+ if (bb5 > 0) {
+ bs = pow5mult(bs, bb5);
+ bb1 = mult(bs, bb);
+ Bfree(bb);
+ bb = bb1;
+ }
+ if (bb2 > 0)
+ bb = lshift(bb, bb2);
+ if (bd5 > 0)
+ bd = pow5mult(bd, bd5);
+ if (bd2 > 0)
+ bd = lshift(bd, bd2);
+ if (bs2 > 0)
+ bs = lshift(bs, bs2);
+ delta = diff(bb, bd);
+ dsign = delta->sign;
+ delta->sign = 0;
+ i = cmp(delta, bs);
+#ifdef Honor_FLT_ROUNDS
+ if (Rounding != 1) {
+ if (i < 0) {
+ /* Error is less than an ulp */
+ if (!delta->x[0] && delta->wds <= 1) {
+ /* exact */
+#ifdef SET_INEXACT
+ inexact = 0;
+#endif
+ break;
+ }
+ if (Rounding) {
+ if (dsign) {
+ dval(&adj) = 1.;
+ goto apply_adj;
+ }
+ }
+ else if (!dsign) {
+ dval(&adj) = -1.;
+ if (!word1(&rv)
+ && !(word0(&rv) & Frac_mask)) {
+ y = word0(&rv) & Exp_mask;
+#ifdef Avoid_Underflow
+ if (!scale || y > 2*P*Exp_msk1)
+#else
+ if (y)
+#endif
+ {
+ delta = lshift(delta,Log2P);
+ if (cmp(delta, bs) <= 0)
+ dval(&adj) = -0.5;
+ }
+ }
+ apply_adj:
+#ifdef Avoid_Underflow
+ if (scale && (y = word0(&rv) & Exp_mask)
+ <= 2*P*Exp_msk1)
+ word0(&adj) += (2*P+1)*Exp_msk1 - y;
+#else
+#ifdef Sudden_Underflow
+ if ((word0(&rv) & Exp_mask) <=
+ P*Exp_msk1) {
+ word0(&rv) += P*Exp_msk1;
+ dval(&rv) += adj*ulp(&rv);
+ word0(&rv) -= P*Exp_msk1;
+ }
+ else
+#endif /*Sudden_Underflow*/
+#endif /*Avoid_Underflow*/
+ dval(&rv) += adj.d*ulp(&rv);
+ }
+ break;
+ }
+ dval(&adj) = ratio(delta, bs);
+ if (adj.d < 1.)
+ dval(&adj) = 1.;
+ if (adj.d <= 0x7ffffffe) {
+ /* dval(&adj) = Rounding ? ceil(&adj) : floor(&adj); */
+ y = adj.d;
+ if (y != adj.d) {
+ if (!((Rounding>>1) ^ dsign))
+ y++;
+ dval(&adj) = y;
+ }
+ }
+#ifdef Avoid_Underflow
+ if (scale && (y = word0(&rv) & Exp_mask) <= 2*P*Exp_msk1)
+ word0(&adj) += (2*P+1)*Exp_msk1 - y;
+#else
+#ifdef Sudden_Underflow
+ if ((word0(&rv) & Exp_mask) <= P*Exp_msk1) {
+ word0(&rv) += P*Exp_msk1;
+ dval(&adj) *= ulp(&rv);
+ if (dsign)
+ dval(&rv) += adj;
+ else
+ dval(&rv) -= adj;
+ word0(&rv) -= P*Exp_msk1;
+ goto cont;
+ }
+#endif /*Sudden_Underflow*/
+#endif /*Avoid_Underflow*/
+ dval(&adj) *= ulp(&rv);
+ if (dsign) {
+ if (word0(&rv) == Big0 && word1(&rv) == Big1)
+ goto ovfl;
+ dval(&rv) += adj.d;
+ }
+ else
+ dval(&rv) -= adj.d;
+ goto cont;
+ }
+#endif /*Honor_FLT_ROUNDS*/
+
+ if (i < 0) {
+ /* Error is less than half an ulp -- check for
+ * special case of mantissa a power of two.
+ */
+ if (dsign || word1(&rv) || word0(&rv) & Bndry_mask
+#ifdef IEEE_Arith
+#ifdef Avoid_Underflow
+ || (word0(&rv) & Exp_mask) <= (2*P+1)*Exp_msk1
+#else
+ || (word0(&rv) & Exp_mask) <= Exp_msk1
+#endif
+#endif
+ ) {
+#ifdef SET_INEXACT
+ if (!delta->x[0] && delta->wds <= 1)
+ inexact = 0;
+#endif
+ break;
+ }
+ if (!delta->x[0] && delta->wds <= 1) {
+ /* exact result */
+#ifdef SET_INEXACT
+ inexact = 0;
+#endif
+ break;
+ }
+ delta = lshift(delta,Log2P);
+ if (cmp(delta, bs) > 0)
+ goto drop_down;
+ break;
+ }
+ if (i == 0) {
+ /* exactly half-way between */
+ if (dsign) {
+ if ((word0(&rv) & Bndry_mask1) == Bndry_mask1
+ && word1(&rv) == (
+#ifdef Avoid_Underflow
+ (scale && (y = word0(&rv) & Exp_mask) <= 2*P*Exp_msk1)
+ ? (0xffffffff & (0xffffffff << (2*P+1-(y>>Exp_shift)))) :
+#endif
+ 0xffffffff)) {
+ /*boundary case -- increment exponent*/
+ if (word0(&rv) == Big0 && word1(&rv) == Big1)
+ goto ovfl;
+ word0(&rv) = (word0(&rv) & Exp_mask)
+ + Exp_msk1
+#ifdef IBM
+ | Exp_msk1 >> 4
+#endif
+ ;
+ word1(&rv) = 0;
+#ifdef Avoid_Underflow
+ dsign = 0;
+#endif
+ break;
+ }
+ }
+ else if (!(word0(&rv) & Bndry_mask) && !word1(&rv)) {
+ drop_down:
+ /* boundary case -- decrement exponent */
+#ifdef Sudden_Underflow /*{{*/
+ L = word0(&rv) & Exp_mask;
+#ifdef IBM
+ if (L < Exp_msk1)
+#else
+#ifdef Avoid_Underflow
+ if (L <= (scale ? (2*P+1)*Exp_msk1 : Exp_msk1))
+#else
+ if (L <= Exp_msk1)
+#endif /*Avoid_Underflow*/
+#endif /*IBM*/
+ goto undfl;
+ L -= Exp_msk1;
+#else /*Sudden_Underflow}{*/
+#ifdef Avoid_Underflow
+ if (scale) {
+ L = word0(&rv) & Exp_mask;
+ if (L <= (2*P+1)*Exp_msk1) {
+ if (L > (P+2)*Exp_msk1)
+ /* round even ==> */
+ /* accept rv */
+ break;
+ /* rv = smallest denormal */
+ goto undfl;
+ }
+ }
+#endif /*Avoid_Underflow*/
+ L = (word0(&rv) & Exp_mask) - Exp_msk1;
+#endif /*Sudden_Underflow}}*/
+ word0(&rv) = L | Bndry_mask1;
+ word1(&rv) = 0xffffffff;
+#ifdef IBM
+ goto cont;
+#else
+ break;
+#endif
+ }
+#ifndef ROUND_BIASED
+#ifdef Avoid_Underflow
+ if (Lsb1) {
+ if (!(word0(&rv) & Lsb1))
+ break;
+ }
+ else if (!(word1(&rv) & Lsb))
+ break;
+#else
+ if (!(word1(&rv) & LSB))
+ break;
+#endif
+#endif
+ if (dsign)
+#ifdef Avoid_Underflow
+ dval(&rv) += sulp(&rv, scale);
+#else
+ dval(&rv) += ulp(&rv);
+#endif
+#ifndef ROUND_BIASED
+ else {
+#ifdef Avoid_Underflow
+ dval(&rv) -= sulp(&rv, scale);
+#else
+ dval(&rv) -= ulp(&rv);
+#endif
+#ifndef Sudden_Underflow
+ if (!dval(&rv))
+ goto undfl;
+#endif
+ }
+#ifdef Avoid_Underflow
+ dsign = 1 - dsign;
+#endif
+#endif
+ break;
+ }
+ if ((aadj = ratio(delta, bs)) <= 2.) {
+ if (dsign)
+ aadj = dval(&aadj1) = 1.;
+ else if (word1(&rv) || word0(&rv) & Bndry_mask) {
+#ifndef Sudden_Underflow
+ if (word1(&rv) == Tiny1 && !word0(&rv))
+ goto undfl;
+#endif
+ aadj = 1.;
+ dval(&aadj1) = -1.;
+ }
+ else {
+ /* special case -- power of FLT_RADIX to be */
+ /* rounded down... */
+
+ if (aadj < 2./FLT_RADIX)
+ aadj = 1./FLT_RADIX;
+ else
+ aadj *= 0.5;
+ dval(&aadj1) = -aadj;
+ }
+ }
+ else {
+ aadj *= 0.5;
+ dval(&aadj1) = dsign ? aadj : -aadj;
+#ifdef Check_FLT_ROUNDS
+ switch(Rounding) {
+ case 2: /* towards +infinity */
+ dval(&aadj1) -= 0.5;
+ break;
+ case 0: /* towards 0 */
+ case 3: /* towards -infinity */
+ dval(&aadj1) += 0.5;
+ }
+#else
+ if (Flt_Rounds == 0)
+ dval(&aadj1) += 0.5;
+#endif /*Check_FLT_ROUNDS*/
+ }
+ y = word0(&rv) & Exp_mask;
+
+ /* Check for overflow */
+
+ if (y == Exp_msk1*(DBL_MAX_EXP+Bias-1)) {
+ dval(&rv0) = dval(&rv);
+ word0(&rv) -= P*Exp_msk1;
+ dval(&adj) = dval(&aadj1) * ulp(&rv);
+ dval(&rv) += dval(&adj);
+ if ((word0(&rv) & Exp_mask) >=
+ Exp_msk1*(DBL_MAX_EXP+Bias-P)) {
+ if (word0(&rv0) == Big0 && word1(&rv0) == Big1)
+ goto ovfl;
+ word0(&rv) = Big0;
+ word1(&rv) = Big1;
+ goto cont;
+ }
+ else
+ word0(&rv) += P*Exp_msk1;
+ }
+ else {
+#ifdef Avoid_Underflow
+ if (scale && y <= 2*P*Exp_msk1) {
+ if (aadj <= 0x7fffffff) {
+ if ((z = aadj) <= 0)
+ z = 1;
+ aadj = z;
+ dval(&aadj1) = dsign ? aadj : -aadj;
+ }
+ word0(&aadj1) += (2*P+1)*Exp_msk1 - y;
+ }
+ dval(&adj) = dval(&aadj1) * ulp(&rv);
+ dval(&rv) += dval(&adj);
+#else
+#ifdef Sudden_Underflow
+ if ((word0(&rv) & Exp_mask) <= P*Exp_msk1) {
+ dval(&rv0) = dval(&rv);
+ word0(&rv) += P*Exp_msk1;
+ dval(&adj) = dval(&aadj1) * ulp(&rv);
+ dval(&rv) += adj;
+#ifdef IBM
+ if ((word0(&rv) & Exp_mask) < P*Exp_msk1)
+#else
+ if ((word0(&rv) & Exp_mask) <= P*Exp_msk1)
+#endif
+ {
+ if (word0(&rv0) == Tiny0
+ && word1(&rv0) == Tiny1)
+ goto undfl;
+ word0(&rv) = Tiny0;
+ word1(&rv) = Tiny1;
+ goto cont;
+ }
+ else
+ word0(&rv) -= P*Exp_msk1;
+ }
+ else {
+ dval(&adj) = dval(&aadj1) * ulp(&rv);
+ dval(&rv) += adj;
+ }
+#else /*Sudden_Underflow*/
+ /* Compute dval(&adj) so that the IEEE rounding rules will
+ * correctly round rv + dval(&adj) in some half-way cases.
+ * If rv * ulp(&rv) is denormalized (i.e.,
+ * y <= (P-1)*Exp_msk1), we must adjust aadj to avoid
+ * trouble from bits lost to denormalization;
+ * example: 1.2e-307 .
+ */
+ if (y <= (P-1)*Exp_msk1 && aadj > 1.) {
+ dval(&aadj1) = (double)(int)(aadj + 0.5);
+ if (!dsign)
+ dval(&aadj1) = -dval(&aadj1);
+ }
+ dval(&adj) = dval(&aadj1) * ulp(&rv);
+ dval(&rv) += adj;
+#endif /*Sudden_Underflow*/
+#endif /*Avoid_Underflow*/
+ }
+ z = word0(&rv) & Exp_mask;
+#ifndef SET_INEXACT
+#ifdef Avoid_Underflow
+ if (!scale)
+#endif
+ if (y == z) {
+ /* Can we stop now? */
+ L = (Long)aadj;
+ aadj -= L;
+ /* The tolerances below are conservative. */
+ if (dsign || word1(&rv) || word0(&rv) & Bndry_mask) {
+ if (aadj < .4999999 || aadj > .5000001)
+ break;
+ }
+ else if (aadj < .4999999/FLT_RADIX)
+ break;
+ }
+#endif
+ cont:
+ Bfree(bb);
+ Bfree(bd);
+ Bfree(bs);
+ Bfree(delta);
+ }
+ Bfree(bb);
+ Bfree(bd);
+ Bfree(bs);
+ Bfree(bd0);
+ Bfree(delta);
+#ifdef SET_INEXACT
+ if (inexact) {
+ if (!oldinexact) {
+ word0(&rv0) = Exp_1 + (70 << Exp_shift);
+ word1(&rv0) = 0;
+ dval(&rv0) += 1.;
+ }
+ }
+ else if (!oldinexact)
+ clear_inexact();
+#endif
+#ifdef Avoid_Underflow
+ if (scale) {
+ word0(&rv0) = Exp_1 - 2*P*Exp_msk1;
+ word1(&rv0) = 0;
+ dval(&rv) *= dval(&rv0);
+#ifndef NO_ERRNO
+ /* try to avoid the bug of testing an 8087 register value */
+#ifdef IEEE_Arith
+ if (!(word0(&rv) & Exp_mask))
+#else
+ if (word0(&rv) == 0 && word1(&rv) == 0)
+#endif
+ errno = ERANGE;
+#endif
+ }
+#endif /* Avoid_Underflow */
+#ifdef SET_INEXACT
+ if (inexact && !(word0(&rv) & Exp_mask)) {
+ /* set underflow bit */
+ dval(&rv0) = 1e-300;
+ dval(&rv0) *= dval(&rv0);
+ }
+#endif
+ ret:
+ if (se)
+ *se = (char *)s;
+ return sign ? -dval(&rv) : dval(&rv);
+ }
+
+ double
+strtod
+#ifdef KR_headers
+ (s00, se, loc) CONST char *s00; char **se; locale_t
+#else
+ (CONST char *s00, char **se)
+#endif
+{
+ return strtod_l(s00, se, 0);
+}
+
diff --git a/contrib/gdtoa/strtodg.c b/contrib/gdtoa/strtodg.c
new file mode 100644
index 0000000000000000000000000000000000000000..37832b4ac31a231349e5f380513d34084e1cafc1
--- /dev/null
+++ b/contrib/gdtoa/strtodg.c
@@ -0,0 +1,1065 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998-2001 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to "."). */
+
+#include "gdtoaimp.h"
+
+#ifdef USE_LOCALE
+#include "locale.h"
+#endif
+
+ static CONST int
+fivesbits[] = { 0, 3, 5, 7, 10, 12, 14, 17, 19, 21,
+ 24, 26, 28, 31, 33, 35, 38, 40, 42, 45,
+ 47, 49, 52
+#ifdef VAX
+ , 54, 56
+#endif
+ };
+
+ Bigint *
+#ifdef KR_headers
+increment(b) Bigint *b;
+#else
+increment(Bigint *b)
+#endif
+{
+ ULong *x, *xe;
+ Bigint *b1;
+#ifdef Pack_16
+ ULong carry = 1, y;
+#endif
+
+ x = b->x;
+ xe = x + b->wds;
+#ifdef Pack_32
+ do {
+ if (*x < (ULong)0xffffffffL) {
+ ++*x;
+ return b;
+ }
+ *x++ = 0;
+ } while(x < xe);
+#else
+ do {
+ y = *x + carry;
+ carry = y >> 16;
+ *x++ = y & 0xffff;
+ if (!carry)
+ return b;
+ } while(x < xe);
+ if (carry)
+#endif
+ {
+ if (b->wds >= b->maxwds) {
+ b1 = Balloc(b->k+1);
+ Bcopy(b1,b);
+ Bfree(b);
+ b = b1;
+ }
+ b->x[b->wds++] = 1;
+ }
+ return b;
+ }
+
+ void
+#ifdef KR_headers
+decrement(b) Bigint *b;
+#else
+decrement(Bigint *b)
+#endif
+{
+ ULong *x, *xe;
+#ifdef Pack_16
+ ULong borrow = 1, y;
+#endif
+
+ x = b->x;
+ xe = x + b->wds;
+#ifdef Pack_32
+ do {
+ if (*x) {
+ --*x;
+ break;
+ }
+ *x++ = 0xffffffffL;
+ }
+ while(x < xe);
+#else
+ do {
+ y = *x - borrow;
+ borrow = (y & 0x10000) >> 16;
+ *x++ = y & 0xffff;
+ } while(borrow && x < xe);
+#endif
+ }
+
+ static int
+#ifdef KR_headers
+all_on(b, n) Bigint *b; int n;
+#else
+all_on(Bigint *b, int n)
+#endif
+{
+ ULong *x, *xe;
+
+ x = b->x;
+ xe = x + (n >> kshift);
+ while(x < xe)
+ if ((*x++ & ALL_ON) != ALL_ON)
+ return 0;
+ if (n &= kmask)
+ return ((*x | (ALL_ON << n)) & ALL_ON) == ALL_ON;
+ return 1;
+ }
+
+ Bigint *
+#ifdef KR_headers
+set_ones(b, n) Bigint *b; int n;
+#else
+set_ones(Bigint *b, int n)
+#endif
+{
+ int k;
+ ULong *x, *xe;
+
+ k = (n + ((1 << kshift) - 1)) >> kshift;
+ if (b->k < k) {
+ Bfree(b);
+ b = Balloc(k);
+ }
+ k = n >> kshift;
+ if (n &= kmask)
+ k++;
+ b->wds = k;
+ x = b->x;
+ xe = x + k;
+ while(x < xe)
+ *x++ = ALL_ON;
+ if (n)
+ x[-1] >>= ULbits - n;
+ return b;
+ }
+
+ static int
+rvOK
+#ifdef KR_headers
+ (d, fpi, exp, bits, exact, rd, irv)
+ U *d; FPI *fpi; Long *exp; ULong *bits; int exact, rd, *irv;
+#else
+ (U *d, FPI *fpi, Long *exp, ULong *bits, int exact, int rd, int *irv)
+#endif
+{
+ Bigint *b;
+ ULong carry, inex, lostbits;
+ int bdif, e, j, k, k1, nb, rv;
+
+ carry = rv = 0;
+ b = d2b(dval(d), &e, &bdif);
+ bdif -= nb = fpi->nbits;
+ e += bdif;
+ if (bdif <= 0) {
+ if (exact)
+ goto trunc;
+ goto ret;
+ }
+ if (P == nb) {
+ if (
+#ifndef IMPRECISE_INEXACT
+ exact &&
+#endif
+ fpi->rounding ==
+#ifdef RND_PRODQUOT
+ FPI_Round_near
+#else
+ Flt_Rounds
+#endif
+ ) goto trunc;
+ goto ret;
+ }
+ switch(rd) {
+ case 1: /* round down (toward -Infinity) */
+ goto trunc;
+ case 2: /* round up (toward +Infinity) */
+ break;
+ default: /* round near */
+ k = bdif - 1;
+ if (k < 0)
+ goto trunc;
+ if (!k) {
+ if (!exact)
+ goto ret;
+ if (b->x[0] & 2)
+ break;
+ goto trunc;
+ }
+ if (b->x[k>>kshift] & ((ULong)1 << (k & kmask)))
+ break;
+ goto trunc;
+ }
+ /* "break" cases: round up 1 bit, then truncate; bdif > 0 */
+ carry = 1;
+ trunc:
+ inex = lostbits = 0;
+ if (bdif > 0) {
+ if ( (lostbits = any_on(b, bdif)) !=0)
+ inex = STRTOG_Inexlo;
+ rshift(b, bdif);
+ if (carry) {
+ inex = STRTOG_Inexhi;
+ b = increment(b);
+ if ( (j = nb & kmask) !=0)
+ j = ULbits - j;
+ if (hi0bits(b->x[b->wds - 1]) != j) {
+ if (!lostbits)
+ lostbits = b->x[0] & 1;
+ rshift(b, 1);
+ e++;
+ }
+ }
+ }
+ else if (bdif < 0)
+ b = lshift(b, -bdif);
+ if (e < fpi->emin) {
+ k = fpi->emin - e;
+ e = fpi->emin;
+ if (k > nb || fpi->sudden_underflow) {
+ b->wds = inex = 0;
+ *irv = STRTOG_Underflow | STRTOG_Inexlo;
+ }
+ else {
+ k1 = k - 1;
+ if (k1 > 0 && !lostbits)
+ lostbits = any_on(b, k1);
+ if (!lostbits && !exact)
+ goto ret;
+ lostbits |=
+ carry = b->x[k1>>kshift] & (1 << (k1 & kmask));
+ rshift(b, k);
+ *irv = STRTOG_Denormal;
+ if (carry) {
+ b = increment(b);
+ inex = STRTOG_Inexhi | STRTOG_Underflow;
+ }
+ else if (lostbits)
+ inex = STRTOG_Inexlo | STRTOG_Underflow;
+ }
+ }
+ else if (e > fpi->emax) {
+ e = fpi->emax + 1;
+ *irv = STRTOG_Infinite | STRTOG_Overflow | STRTOG_Inexhi;
+#ifndef NO_ERRNO
+ errno = ERANGE;
+#endif
+ b->wds = inex = 0;
+ }
+ *exp = e;
+ copybits(bits, nb, b);
+ *irv |= inex;
+ rv = 1;
+ ret:
+ Bfree(b);
+ return rv;
+ }
+
+ static int
+#ifdef KR_headers
+mantbits(d) U *d;
+#else
+mantbits(U *d)
+#endif
+{
+ ULong L;
+#ifdef VAX
+ L = word1(d) << 16 | word1(d) >> 16;
+ if (L)
+#else
+ if ( (L = word1(d)) !=0)
+#endif
+ return P - lo0bits(&L);
+#ifdef VAX
+ L = word0(d) << 16 | word0(d) >> 16 | Exp_msk11;
+#else
+ L = word0(d) | Exp_msk1;
+#endif
+ return P - 32 - lo0bits(&L);
+ }
+
+ int
+strtodg_l
+#ifdef KR_headers
+ (s00, se, fpi, exp, bits, loc)
+ CONST char *s00; char **se; FPI *fpi; Long *exp; ULong *bits; locale_t loc;
+#else
+ (CONST char *s00, char **se, FPI *fpi, Long *exp, ULong *bits, locale_t loc)
+#endif
+{
+ int abe, abits, asub;
+ int bb0, bb2, bb5, bbe, bd2, bd5, bbbits, bs2, c, decpt, denorm;
+ int dsign, e, e1, e2, emin, esign, finished, i, inex, irv;
+ int j, k, nbits, nd, nd0, nf, nz, nz0, rd, rvbits, rve, rve1, sign;
+ int sudden_underflow;
+ CONST char *s, *s0, *s1;
+ double adj0, tol;
+ Long L;
+ U adj, rv;
+ ULong *b, *be, y, z;
+ Bigint *ab, *bb, *bb1, *bd, *bd0, *bs, *delta, *rvb, *rvb0;
+#ifdef USE_LOCALE /*{{*/
+#ifdef NO_LOCALE_CACHE
+ char *decimalpoint = localeconv_l(loc)->decimal_point;
+ int dplen = strlen(decimalpoint);
+#else
+ char *decimalpoint;
+ static char *decimalpoint_cache;
+ static int dplen;
+ if (!(s0 = decimalpoint_cache)) {
+ s0 = localeconv_l(loc)->decimal_point;
+ if ((decimalpoint_cache = (char*)MALLOC(strlen(s0) + 1))) {
+ strcpy(decimalpoint_cache, s0);
+ s0 = decimalpoint_cache;
+ }
+ dplen = strlen(s0);
+ }
+ decimalpoint = (char*)s0;
+#endif /*NO_LOCALE_CACHE*/
+#else /*USE_LOCALE}{*/
+#define dplen 1
+#endif /*USE_LOCALE}}*/
+
+ irv = STRTOG_Zero;
+ denorm = sign = nz0 = nz = 0;
+ dval(&rv) = 0.;
+ rvb = 0;
+ nbits = fpi->nbits;
+ for(s = s00;;s++) switch(*s) {
+ case '-':
+ sign = 1;
+ /* no break */
+ case '+':
+ if (*++s)
+ goto break2;
+ /* no break */
+ case 0:
+ sign = 0;
+ irv = STRTOG_NoNumber;
+ s = s00;
+ goto ret;
+ case '\t':
+ case '\n':
+ case '\v':
+ case '\f':
+ case '\r':
+ case ' ':
+ continue;
+ default:
+ goto break2;
+ }
+ break2:
+ if (*s == '0') {
+#ifndef NO_HEX_FP
+ switch(s[1]) {
+ case 'x':
+ case 'X':
+ irv = gethex(&s, fpi, exp, &rvb, sign);
+ if (irv == STRTOG_NoNumber) {
+ s = s00;
+ sign = 0;
+ }
+ goto ret;
+ }
+#endif
+ nz0 = 1;
+ while(*++s == '0') ;
+ if (!*s)
+ goto ret;
+ }
+ sudden_underflow = fpi->sudden_underflow;
+ s0 = s;
+ y = z = 0;
+ for(decpt = nd = nf = 0; (c = *s) >= '0' && c <= '9'; nd++, s++)
+ if (nd < 9)
+ y = 10*y + c - '0';
+ else if (nd < 16)
+ z = 10*z + c - '0';
+ nd0 = nd;
+#ifdef USE_LOCALE
+ if (c == *decimalpoint) {
+ for(i = 1; decimalpoint[i]; ++i)
+ if (s[i] != decimalpoint[i])
+ goto dig_done;
+ s += i;
+ c = *s;
+#else
+ if (c == '.') {
+ c = *++s;
+#endif
+ decpt = 1;
+ if (!nd) {
+ for(; c == '0'; c = *++s)
+ nz++;
+ if (c > '0' && c <= '9') {
+ s0 = s;
+ nf += nz;
+ nz = 0;
+ goto have_dig;
+ }
+ goto dig_done;
+ }
+ for(; c >= '0' && c <= '9'; c = *++s) {
+ have_dig:
+ nz++;
+ if (c -= '0') {
+ nf += nz;
+ for(i = 1; i < nz; i++)
+ if (nd++ < 9)
+ y *= 10;
+ else if (nd <= DBL_DIG + 1)
+ z *= 10;
+ if (nd++ < 9)
+ y = 10*y + c;
+ else if (nd <= DBL_DIG + 1)
+ z = 10*z + c;
+ nz = 0;
+ }
+ }
+ }/*}*/
+ dig_done:
+ e = 0;
+ if (c == 'e' || c == 'E') {
+ if (!nd && !nz && !nz0) {
+ irv = STRTOG_NoNumber;
+ s = s00;
+ goto ret;
+ }
+ s00 = s;
+ esign = 0;
+ switch(c = *++s) {
+ case '-':
+ esign = 1;
+ case '+':
+ c = *++s;
+ }
+ if (c >= '0' && c <= '9') {
+ while(c == '0')
+ c = *++s;
+ if (c > '0' && c <= '9') {
+ L = c - '0';
+ s1 = s;
+ while((c = *++s) >= '0' && c <= '9')
+ L = 10*L + c - '0';
+ if (s - s1 > 8 || L > 19999)
+ /* Avoid confusion from exponents
+ * so large that e might overflow.
+ */
+ e = 19999; /* safe for 16 bit ints */
+ else
+ e = (int)L;
+ if (esign)
+ e = -e;
+ }
+ else
+ e = 0;
+ }
+ else
+ s = s00;
+ }
+ if (!nd) {
+ if (!nz && !nz0) {
+#ifdef INFNAN_CHECK
+ /* Check for Nan and Infinity */
+ if (!decpt)
+ switch(c) {
+ case 'i':
+ case 'I':
+ if (match(&s,"nf")) {
+ --s;
+ if (!match(&s,"inity"))
+ ++s;
+ irv = STRTOG_Infinite;
+ goto infnanexp;
+ }
+ break;
+ case 'n':
+ case 'N':
+ if (match(&s, "an")) {
+ irv = STRTOG_NaN;
+ *exp = fpi->emax + 1;
+#ifndef No_Hex_NaN
+ if (*s == '(') /*)*/
+ irv = hexnan(&s, fpi, bits);
+#endif
+ goto infnanexp;
+ }
+ }
+#endif /* INFNAN_CHECK */
+ irv = STRTOG_NoNumber;
+ s = s00;
+ }
+ goto ret;
+ }
+
+ irv = STRTOG_Normal;
+ e1 = e -= nf;
+ rd = 0;
+ switch(fpi->rounding & 3) {
+ case FPI_Round_up:
+ rd = 2 - sign;
+ break;
+ case FPI_Round_zero:
+ rd = 1;
+ break;
+ case FPI_Round_down:
+ rd = 1 + sign;
+ }
+
+ /* Now we have nd0 digits, starting at s0, followed by a
+ * decimal point, followed by nd-nd0 digits. The number we're
+ * after is the integer represented by those digits times
+ * 10**e */
+
+ if (!nd0)
+ nd0 = nd;
+ k = nd < DBL_DIG + 1 ? nd : DBL_DIG + 1;
+ dval(&rv) = y;
+ if (k > 9)
+ dval(&rv) = tens[k - 9] * dval(&rv) + z;
+ bd0 = 0;
+ if (nbits <= P && nd <= DBL_DIG) {
+ if (!e) {
+ if (rvOK(&rv, fpi, exp, bits, 1, rd, &irv))
+ goto ret;
+ }
+ else if (e > 0) {
+ if (e <= Ten_pmax) {
+#ifdef VAX
+ goto vax_ovfl_check;
+#else
+ i = fivesbits[e] + mantbits(&rv) <= P;
+ /* rv = */ rounded_product(dval(&rv), tens[e]);
+ if (rvOK(&rv, fpi, exp, bits, i, rd, &irv))
+ goto ret;
+ e1 -= e;
+ goto rv_notOK;
+#endif
+ }
+ i = DBL_DIG - nd;
+ if (e <= Ten_pmax + i) {
+ /* A fancier test would sometimes let us do
+ * this for larger i values.
+ */
+ e2 = e - i;
+ e1 -= i;
+ dval(&rv) *= tens[i];
+#ifdef VAX
+ /* VAX exponent range is so narrow we must
+ * worry about overflow here...
+ */
+ vax_ovfl_check:
+ dval(&adj) = dval(&rv);
+ word0(&adj) -= P*Exp_msk1;
+ /* adj = */ rounded_product(dval(&adj), tens[e2]);
+ if ((word0(&adj) & Exp_mask)
+ > Exp_msk1*(DBL_MAX_EXP+Bias-1-P))
+ goto rv_notOK;
+ word0(&adj) += P*Exp_msk1;
+ dval(&rv) = dval(&adj);
+#else
+ /* rv = */ rounded_product(dval(&rv), tens[e2]);
+#endif
+ if (rvOK(&rv, fpi, exp, bits, 0, rd, &irv))
+ goto ret;
+ e1 -= e2;
+ }
+ }
+#ifndef Inaccurate_Divide
+ else if (e >= -Ten_pmax) {
+ /* rv = */ rounded_quotient(dval(&rv), tens[-e]);
+ if (rvOK(&rv, fpi, exp, bits, 0, rd, &irv))
+ goto ret;
+ e1 -= e;
+ }
+#endif
+ }
+ rv_notOK:
+ e1 += nd - k;
+
+ /* Get starting approximation = rv * 10**e1 */
+
+ e2 = 0;
+ if (e1 > 0) {
+ if ( (i = e1 & 15) !=0)
+ dval(&rv) *= tens[i];
+ if (e1 &= ~15) {
+ e1 >>= 4;
+ while(e1 >= (1 << (n_bigtens-1))) {
+ e2 += ((word0(&rv) & Exp_mask)
+ >> Exp_shift1) - Bias;
+ word0(&rv) &= ~Exp_mask;
+ word0(&rv) |= Bias << Exp_shift1;
+ dval(&rv) *= bigtens[n_bigtens-1];
+ e1 -= 1 << (n_bigtens-1);
+ }
+ e2 += ((word0(&rv) & Exp_mask) >> Exp_shift1) - Bias;
+ word0(&rv) &= ~Exp_mask;
+ word0(&rv) |= Bias << Exp_shift1;
+ for(j = 0; e1 > 0; j++, e1 >>= 1)
+ if (e1 & 1)
+ dval(&rv) *= bigtens[j];
+ }
+ }
+ else if (e1 < 0) {
+ e1 = -e1;
+ if ( (i = e1 & 15) !=0)
+ dval(&rv) /= tens[i];
+ if (e1 &= ~15) {
+ e1 >>= 4;
+ while(e1 >= (1 << (n_bigtens-1))) {
+ e2 += ((word0(&rv) & Exp_mask)
+ >> Exp_shift1) - Bias;
+ word0(&rv) &= ~Exp_mask;
+ word0(&rv) |= Bias << Exp_shift1;
+ dval(&rv) *= tinytens[n_bigtens-1];
+ e1 -= 1 << (n_bigtens-1);
+ }
+ e2 += ((word0(&rv) & Exp_mask) >> Exp_shift1) - Bias;
+ word0(&rv) &= ~Exp_mask;
+ word0(&rv) |= Bias << Exp_shift1;
+ for(j = 0; e1 > 0; j++, e1 >>= 1)
+ if (e1 & 1)
+ dval(&rv) *= tinytens[j];
+ }
+ }
+#ifdef IBM
+ /* e2 is a correction to the (base 2) exponent of the return
+ * value, reflecting adjustments above to avoid overflow in the
+ * native arithmetic. For native IBM (base 16) arithmetic, we
+ * must multiply e2 by 4 to change from base 16 to 2.
+ */
+ e2 <<= 2;
+#endif
+ rvb = d2b(dval(&rv), &rve, &rvbits); /* rv = rvb * 2^rve */
+ rve += e2;
+ if ((j = rvbits - nbits) > 0) {
+ rshift(rvb, j);
+ rvbits = nbits;
+ rve += j;
+ }
+ bb0 = 0; /* trailing zero bits in rvb */
+ e2 = rve + rvbits - nbits;
+ if (e2 > fpi->emax + 1)
+ goto huge;
+ rve1 = rve + rvbits - nbits;
+ if (e2 < (emin = fpi->emin)) {
+ denorm = 1;
+ j = rve - emin;
+ if (j > 0) {
+ rvb = lshift(rvb, j);
+ rvbits += j;
+ }
+ else if (j < 0) {
+ rvbits += j;
+ if (rvbits <= 0) {
+ if (rvbits < -1) {
+ ufl:
+ rvb->wds = 0;
+ rvb->x[0] = 0;
+ *exp = emin;
+ irv = STRTOG_Underflow | STRTOG_Inexlo;
+ goto ret;
+ }
+ rvb->x[0] = rvb->wds = rvbits = 1;
+ }
+ else
+ rshift(rvb, -j);
+ }
+ rve = rve1 = emin;
+ if (sudden_underflow && e2 + 1 < emin)
+ goto ufl;
+ }
+
+ /* Now the hard part -- adjusting rv to the correct value.*/
+
+ /* Put digits into bd: true value = bd * 10^e */
+
+ bd0 = s2b(s0, nd0, nd, y, dplen);
+
+ for(;;) {
+ bd = Balloc(bd0->k);
+ Bcopy(bd, bd0);
+ bb = Balloc(rvb->k);
+ Bcopy(bb, rvb);
+ bbbits = rvbits - bb0;
+ bbe = rve + bb0;
+ bs = i2b(1);
+
+ if (e >= 0) {
+ bb2 = bb5 = 0;
+ bd2 = bd5 = e;
+ }
+ else {
+ bb2 = bb5 = -e;
+ bd2 = bd5 = 0;
+ }
+ if (bbe >= 0)
+ bb2 += bbe;
+ else
+ bd2 -= bbe;
+ bs2 = bb2;
+ j = nbits + 1 - bbbits;
+ i = bbe + bbbits - nbits;
+ if (i < emin) /* denormal */
+ j += i - emin;
+ bb2 += j;
+ bd2 += j;
+ i = bb2 < bd2 ? bb2 : bd2;
+ if (i > bs2)
+ i = bs2;
+ if (i > 0) {
+ bb2 -= i;
+ bd2 -= i;
+ bs2 -= i;
+ }
+ if (bb5 > 0) {
+ bs = pow5mult(bs, bb5);
+ bb1 = mult(bs, bb);
+ Bfree(bb);
+ bb = bb1;
+ }
+ bb2 -= bb0;
+ if (bb2 > 0)
+ bb = lshift(bb, bb2);
+ else if (bb2 < 0)
+ rshift(bb, -bb2);
+ if (bd5 > 0)
+ bd = pow5mult(bd, bd5);
+ if (bd2 > 0)
+ bd = lshift(bd, bd2);
+ if (bs2 > 0)
+ bs = lshift(bs, bs2);
+ asub = 1;
+ inex = STRTOG_Inexhi;
+ delta = diff(bb, bd);
+ if (delta->wds <= 1 && !delta->x[0])
+ break;
+ dsign = delta->sign;
+ delta->sign = finished = 0;
+ L = 0;
+ i = cmp(delta, bs);
+ if (rd && i <= 0) {
+ irv = STRTOG_Normal;
+ if ( (finished = dsign ^ (rd&1)) !=0) {
+ if (dsign != 0) {
+ irv |= STRTOG_Inexhi;
+ goto adj1;
+ }
+ irv |= STRTOG_Inexlo;
+ if (rve1 == emin)
+ goto adj1;
+ for(i = 0, j = nbits; j >= ULbits;
+ i++, j -= ULbits) {
+ if (rvb->x[i] & ALL_ON)
+ goto adj1;
+ }
+ if (j > 1 && lo0bits(rvb->x + i) < j - 1)
+ goto adj1;
+ rve = rve1 - 1;
+ rvb = set_ones(rvb, rvbits = nbits);
+ break;
+ }
+ irv |= dsign ? STRTOG_Inexlo : STRTOG_Inexhi;
+ break;
+ }
+ if (i < 0) {
+ /* Error is less than half an ulp -- check for
+ * special case of mantissa a power of two.
+ */
+ irv = dsign
+ ? STRTOG_Normal | STRTOG_Inexlo
+ : STRTOG_Normal | STRTOG_Inexhi;
+ if (dsign || bbbits > 1 || denorm || rve1 == emin)
+ break;
+ delta = lshift(delta,1);
+ if (cmp(delta, bs) > 0) {
+ irv = STRTOG_Normal | STRTOG_Inexlo;
+ goto drop_down;
+ }
+ break;
+ }
+ if (i == 0) {
+ /* exactly half-way between */
+ if (dsign) {
+ if (denorm && all_on(rvb, rvbits)) {
+ /*boundary case -- increment exponent*/
+ rvb->wds = 1;
+ rvb->x[0] = 1;
+ rve = emin + nbits - (rvbits = 1);
+ irv = STRTOG_Normal | STRTOG_Inexhi;
+ denorm = 0;
+ break;
+ }
+ irv = STRTOG_Normal | STRTOG_Inexlo;
+ }
+ else if (bbbits == 1) {
+ irv = STRTOG_Normal;
+ drop_down:
+ /* boundary case -- decrement exponent */
+ if (rve1 == emin) {
+ irv = STRTOG_Normal | STRTOG_Inexhi;
+ if (rvb->wds == 1 && rvb->x[0] == 1)
+ sudden_underflow = 1;
+ break;
+ }
+ rve -= nbits;
+ rvb = set_ones(rvb, rvbits = nbits);
+ break;
+ }
+ else
+ irv = STRTOG_Normal | STRTOG_Inexhi;
+ if ((bbbits < nbits && !denorm) || !(rvb->x[0] & 1))
+ break;
+ if (dsign) {
+ rvb = increment(rvb);
+ j = kmask & (ULbits - (rvbits & kmask));
+ if (hi0bits(rvb->x[rvb->wds - 1]) != j)
+ rvbits++;
+ irv = STRTOG_Normal | STRTOG_Inexhi;
+ }
+ else {
+ if (bbbits == 1)
+ goto undfl;
+ decrement(rvb);
+ irv = STRTOG_Normal | STRTOG_Inexlo;
+ }
+ break;
+ }
+ if ((dval(&adj) = ratio(delta, bs)) <= 2.) {
+ adj1:
+ inex = STRTOG_Inexlo;
+ if (dsign) {
+ asub = 0;
+ inex = STRTOG_Inexhi;
+ }
+ else if (denorm && bbbits <= 1) {
+ undfl:
+ rvb->wds = 0;
+ rve = emin;
+ irv = STRTOG_Underflow | STRTOG_Inexlo;
+ break;
+ }
+ adj0 = dval(&adj) = 1.;
+ }
+ else {
+ adj0 = dval(&adj) *= 0.5;
+ if (dsign) {
+ asub = 0;
+ inex = STRTOG_Inexlo;
+ }
+ if (dval(&adj) < 2147483647.) {
+ L = adj0;
+ adj0 -= L;
+ switch(rd) {
+ case 0:
+ if (adj0 >= .5)
+ goto inc_L;
+ break;
+ case 1:
+ if (asub && adj0 > 0.)
+ goto inc_L;
+ break;
+ case 2:
+ if (!asub && adj0 > 0.) {
+ inc_L:
+ L++;
+ inex = STRTOG_Inexact - inex;
+ }
+ }
+ dval(&adj) = L;
+ }
+ }
+ y = rve + rvbits;
+
+ /* adj *= ulp(dval(&rv)); */
+ /* if (asub) rv -= adj; else rv += adj; */
+
+ if (!denorm && rvbits < nbits) {
+ rvb = lshift(rvb, j = nbits - rvbits);
+ rve -= j;
+ rvbits = nbits;
+ }
+ ab = d2b(dval(&adj), &abe, &abits);
+ if (abe < 0)
+ rshift(ab, -abe);
+ else if (abe > 0)
+ ab = lshift(ab, abe);
+ rvb0 = rvb;
+ if (asub) {
+ /* rv -= adj; */
+ j = hi0bits(rvb->x[rvb->wds-1]);
+ rvb = diff(rvb, ab);
+ k = rvb0->wds - 1;
+ if (denorm)
+ /* do nothing */;
+ else if (rvb->wds <= k
+ || hi0bits( rvb->x[k]) >
+ hi0bits(rvb0->x[k])) {
+ /* unlikely; can only have lost 1 high bit */
+ if (rve1 == emin) {
+ --rvbits;
+ denorm = 1;
+ }
+ else {
+ rvb = lshift(rvb, 1);
+ --rve;
+ --rve1;
+ L = finished = 0;
+ }
+ }
+ }
+ else {
+ rvb = sum(rvb, ab);
+ k = rvb->wds - 1;
+ if (k >= rvb0->wds
+ || hi0bits(rvb->x[k]) < hi0bits(rvb0->x[k])) {
+ if (denorm) {
+ if (++rvbits == nbits)
+ denorm = 0;
+ }
+ else {
+ rshift(rvb, 1);
+ rve++;
+ rve1++;
+ L = 0;
+ }
+ }
+ }
+ Bfree(ab);
+ Bfree(rvb0);
+ if (finished)
+ break;
+
+ z = rve + rvbits;
+ if (y == z && L) {
+ /* Can we stop now? */
+ tol = dval(&adj) * 5e-16; /* > max rel error */
+ dval(&adj) = adj0 - .5;
+ if (dval(&adj) < -tol) {
+ if (adj0 > tol) {
+ irv |= inex;
+ break;
+ }
+ }
+ else if (dval(&adj) > tol && adj0 < 1. - tol) {
+ irv |= inex;
+ break;
+ }
+ }
+ bb0 = denorm ? 0 : trailz(rvb);
+ Bfree(bb);
+ Bfree(bd);
+ Bfree(bs);
+ Bfree(delta);
+ }
+ if (!denorm && (j = nbits - rvbits)) {
+ if (j > 0)
+ rvb = lshift(rvb, j);
+ else
+ rshift(rvb, -j);
+ rve -= j;
+ }
+ *exp = rve;
+ Bfree(bb);
+ Bfree(bd);
+ Bfree(bs);
+ Bfree(bd0);
+ Bfree(delta);
+ if (rve > fpi->emax) {
+ switch(fpi->rounding & 3) {
+ case FPI_Round_near:
+ goto huge;
+ case FPI_Round_up:
+ if (!sign)
+ goto huge;
+ break;
+ case FPI_Round_down:
+ if (sign)
+ goto huge;
+ }
+ /* Round to largest representable magnitude */
+ Bfree(rvb);
+ rvb = 0;
+ irv = STRTOG_Normal | STRTOG_Inexlo;
+ *exp = fpi->emax;
+ b = bits;
+ be = b + ((fpi->nbits + 31) >> 5);
+ while(b < be)
+ *b++ = -1;
+ if ((j = fpi->nbits & 0x1f))
+ *--be >>= (32 - j);
+ goto ret;
+ huge:
+ rvb->wds = 0;
+ irv = STRTOG_Infinite | STRTOG_Overflow | STRTOG_Inexhi;
+#ifndef NO_ERRNO
+ errno = ERANGE;
+#endif
+ infnanexp:
+ *exp = fpi->emax + 1;
+ }
+ ret:
+ if (denorm) {
+ if (sudden_underflow) {
+ rvb->wds = 0;
+ irv = STRTOG_Underflow | STRTOG_Inexlo;
+#ifndef NO_ERRNO
+ errno = ERANGE;
+#endif
+ }
+ else {
+ irv = (irv & ~STRTOG_Retmask) |
+ (rvb->wds > 0 ? STRTOG_Denormal : STRTOG_Zero);
+ if (irv & STRTOG_Inexact) {
+ irv |= STRTOG_Underflow;
+#ifndef NO_ERRNO
+ errno = ERANGE;
+#endif
+ }
+ }
+ }
+ if (se)
+ *se = (char *)s;
+ if (sign)
+ irv |= STRTOG_Neg;
+ if (rvb) {
+ copybits(bits, nbits, rvb);
+ Bfree(rvb);
+ }
+ return irv;
+ }
diff --git a/contrib/gdtoa/strtof.c b/contrib/gdtoa/strtof.c
new file mode 100644
index 0000000000000000000000000000000000000000..5814f09de8a479ebc984219fcb89f98d6050224f
--- /dev/null
+++ b/contrib/gdtoa/strtof.c
@@ -0,0 +1,95 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998, 2000 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to "."). */
+
+/* $FreeBSD$ */
+
+#include "gdtoaimp.h"
+
+static float
+#ifdef KR_headers
+strtof_l(s, sp, loc) CONST char *s; char **sp; locale_t loc;
+#else
+strtof_l(CONST char *s, char **sp, locale_t loc)
+#endif
+{
+ static FPI fpi0 = { 24, 1-127-24+1, 254-127-24+1, 1, SI };
+ ULong bits[1];
+ Long exp;
+ int k;
+ union { ULong L[1]; float f; } u;
+#ifdef Honor_FLT_ROUNDS
+#include "gdtoa_fltrnds.h"
+#else
+#define fpi &fpi0
+#endif
+
+ k = strtodg_l(s, sp, fpi, &exp, bits, loc);
+ switch(k & STRTOG_Retmask) {
+ case STRTOG_NoNumber:
+ case STRTOG_Zero:
+ u.L[0] = 0;
+ break;
+
+ case STRTOG_Normal:
+ u.L[0] = (bits[0] & 0x7fffff) | ((exp + 0x7f + 23) << 23);
+ break;
+
+ case STRTOG_NaNbits:
+ /* FreeBSD local: always return a quiet NaN */
+ u.L[0] = bits[0] | 0x7fc00000;
+ break;
+
+ case STRTOG_Denormal:
+ u.L[0] = bits[0];
+ break;
+
+ case STRTOG_Infinite:
+ u.L[0] = 0x7f800000;
+ break;
+
+ case STRTOG_NaN:
+ u.L[0] = f_QNAN;
+ }
+ if (k & STRTOG_Neg)
+ u.L[0] |= 0x80000000L;
+ return u.f;
+ }
+ float
+#ifdef KR_headers
+strtof(s, sp) CONST char *s; char **sp;
+#else
+strtof(CONST char *s, char **sp)
+#endif
+{
+ // return strtof_l(s, sp, __get_locale());
+ return strtof_l(s, sp, NULL);
+}
+
diff --git a/contrib/gdtoa/strtord.c b/contrib/gdtoa/strtord.c
new file mode 100644
index 0000000000000000000000000000000000000000..490f3e1609269a495e31e3fc8e1c07e7b3851041
--- /dev/null
+++ b/contrib/gdtoa/strtord.c
@@ -0,0 +1,95 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998, 2000 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to "."). */
+
+#include "gdtoaimp.h"
+
+ void
+#ifdef KR_headers
+ULtod(L, bits, exp, k) ULong *L; ULong *bits; Long exp; int k;
+#else
+ULtod(ULong *L, ULong *bits, Long exp, int k)
+#endif
+{
+ switch(k & STRTOG_Retmask) {
+ case STRTOG_NoNumber:
+ case STRTOG_Zero:
+ L[0] = L[1] = 0;
+ break;
+
+ case STRTOG_Denormal:
+ L[_1] = bits[0];
+ L[_0] = bits[1];
+ break;
+
+ case STRTOG_Normal:
+ case STRTOG_NaNbits:
+ L[_1] = bits[0];
+ L[_0] = (bits[1] & ~0x100000) | ((exp + 0x3ff + 52) << 20);
+ break;
+
+ case STRTOG_Infinite:
+ L[_0] = 0x7ff00000;
+ L[_1] = 0;
+ break;
+
+ case STRTOG_NaN:
+ L[0] = d_QNAN0;
+ L[1] = d_QNAN1;
+ }
+ if (k & STRTOG_Neg)
+ L[_0] |= 0x80000000L;
+ }
+
+ int
+#ifdef KR_headers
+strtord_l(s, sp, rounding, d, locale) CONST char *s; char **sp; int rounding;
+double *d; locale_t locale;
+#else
+strtord_l(CONST char *s, char **sp, int rounding, double *d, locale_t locale)
+#endif
+{
+ static FPI fpi0 = { 53, 1-1023-53+1, 2046-1023-53+1, 1, SI };
+ FPI *fpi, fpi1;
+ ULong bits[2];
+ Long exp;
+ int k;
+
+ fpi = &fpi0;
+ if (rounding != FPI_Round_near) {
+ fpi1 = fpi0;
+ fpi1.rounding = rounding;
+ fpi = &fpi1;
+ }
+ k = strtodg_l(s, sp, fpi, &exp, bits, locale);
+ ULtod((ULong*)d, bits, exp, k);
+ return k;
+ }
+
diff --git a/contrib/gdtoa/sum.c b/contrib/gdtoa/sum.c
new file mode 100644
index 0000000000000000000000000000000000000000..dc0c88bcfab85f022a52a99da024a61cadddceca
--- /dev/null
+++ b/contrib/gdtoa/sum.c
@@ -0,0 +1,98 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to "."). */
+
+#include "gdtoaimp.h"
+
+ Bigint *
+#ifdef KR_headers
+sum(a, b) Bigint *a; Bigint *b;
+#else
+sum(Bigint *a, Bigint *b)
+#endif
+{
+ Bigint *c;
+ ULong carry, *xc, *xa, *xb, *xe, y;
+#ifdef Pack_32
+ ULong z;
+#endif
+
+ if (a->wds < b->wds) {
+ c = b; b = a; a = c;
+ }
+ c = Balloc(a->k);
+ c->wds = a->wds;
+ carry = 0;
+ xa = a->x;
+ xb = b->x;
+ xc = c->x;
+ xe = xc + b->wds;
+#ifdef Pack_32
+ do {
+ y = (*xa & 0xffff) + (*xb & 0xffff) + carry;
+ carry = (y & 0x10000) >> 16;
+ z = (*xa++ >> 16) + (*xb++ >> 16) + carry;
+ carry = (z & 0x10000) >> 16;
+ Storeinc(xc, z, y);
+ }
+ while(xc < xe);
+ xe += a->wds - b->wds;
+ while(xc < xe) {
+ y = (*xa & 0xffff) + carry;
+ carry = (y & 0x10000) >> 16;
+ z = (*xa++ >> 16) + carry;
+ carry = (z & 0x10000) >> 16;
+ Storeinc(xc, z, y);
+ }
+#else
+ do {
+ y = *xa++ + *xb++ + carry;
+ carry = (y & 0x10000) >> 16;
+ *xc++ = y & 0xffff;
+ }
+ while(xc < xe);
+ xe += a->wds - b->wds;
+ while(xc < xe) {
+ y = *xa++ + carry;
+ carry = (y & 0x10000) >> 16;
+ *xc++ = y & 0xffff;
+ }
+#endif
+ if (carry) {
+ if (c->wds == c->maxwds) {
+ b = Balloc(c->k + 1);
+ Bcopy(b, c);
+ Bfree(c);
+ c = b;
+ }
+ c->x[c->wds++] = 1;
+ }
+ return c;
+ }
diff --git a/contrib/gdtoa/ulp.c b/contrib/gdtoa/ulp.c
new file mode 100644
index 0000000000000000000000000000000000000000..17e9f862c44331485ef40bbae5a43ff9374ed67b
--- /dev/null
+++ b/contrib/gdtoa/ulp.c
@@ -0,0 +1,70 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998, 1999 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to "."). */
+
+#include "gdtoaimp.h"
+
+ double
+ulp
+#ifdef KR_headers
+ (x) U *x;
+#else
+ (U *x)
+#endif
+{
+ Long L;
+ U a;
+
+ L = (word0(x) & Exp_mask) - (P-1)*Exp_msk1;
+#ifndef Sudden_Underflow
+ if (L > 0) {
+#endif
+#ifdef IBM
+ L |= Exp_msk1 >> 4;
+#endif
+ word0(&a) = L;
+ word1(&a) = 0;
+#ifndef Sudden_Underflow
+ }
+ else {
+ L = -L >> Exp_shift;
+ if (L < Exp_shift) {
+ word0(&a) = 0x80000 >> L;
+ word1(&a) = 0;
+ }
+ else {
+ word0(&a) = 0;
+ L -= Exp_shift;
+ word1(&a) = L >= 31 ? 1 : 1 << (31 - L);
+ }
+ }
+#endif
+ return dval(&a);
+ }
diff --git a/contrib/tcp_wrappers/strcasecmp.c b/contrib/tcp_wrappers/strcasecmp.c
new file mode 100644
index 0000000000000000000000000000000000000000..9dca05002fbb5cf5733e6a3037e1f15a9461ab29
--- /dev/null
+++ b/contrib/tcp_wrappers/strcasecmp.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 1987 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley. The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strcasecmp.c 5.6 (Berkeley) 6/27/88";
+#endif /* LIBC_SCCS and not lint */
+// #include
+// #include
+/* Some environments don't define u_char -- WZV */
+#if 0
+#include
+#else
+typedef unsigned char u_char;
+#endif
+
+/*
+ * This array is designed for mapping upper and lower case letter
+ * together for a case independent comparison. The mappings are
+ * based upon ascii character sequences.
+ */
+static u_char charmap[] = {
+ '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
+ '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
+ '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
+ '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
+ '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
+ '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
+ '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
+ '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
+ '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
+ '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
+ '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
+ '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
+ '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
+ '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
+ '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
+ '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
+ '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
+ '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
+ '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
+ '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
+ '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
+ '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
+ '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
+ '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
+ '\300', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
+ '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
+ '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
+ '\370', '\371', '\372', '\333', '\334', '\335', '\336', '\337',
+ '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
+ '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
+ '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
+ '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
+};
+
+int strcasecmp(s1, s2)
+ char *s1, *s2;
+{
+ register u_char *cm = charmap,
+ *us1 = (u_char *)s1,
+ *us2 = (u_char *)s2;
+
+ while (cm[*us1] == cm[*us2++])
+ if (*us1++ == '\0')
+ return(0);
+ return(cm[*us1] - cm[*--us2]);
+}
+
+int strncasecmp(s1, s2, n)
+ char *s1, *s2;
+ register int n;
+{
+ register u_char *cm = charmap,
+ *us1 = (u_char *)s1,
+ *us2 = (u_char *)s2;
+
+ while (--n >= 0 && cm[*us1] == cm[*us2++])
+ if (*us1++ == '\0')
+ return(0);
+ return(n < 0 ? 0 : cm[*us1] - cm[*--us2]);
+}
diff --git a/lib/libc/aarch64/arith.h b/lib/libc/aarch64/arith.h
new file mode 100644
index 0000000000000000000000000000000000000000..ecb1a33fccb0e832d190cf6f094bb06917ee0228
--- /dev/null
+++ b/lib/libc/aarch64/arith.h
@@ -0,0 +1,19 @@
+/*
+ * MD header for contrib/gdtoa
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * NOTE: The definitions in this file must be correct or strtod(3) and
+ * floating point formats in printf(3) will break! The file can be
+ * generated by running contrib/gdtoa/arithchk.c on the target
+ * architecture. See contrib/gdtoa/gdtoaimp.h for details.
+ */
+
+#define IEEE_8087
+#define Arith_Kind_ASL 1
+#define Long int
+#define Intcast (int)(long)
+#define Double_Align
+#define X64_bit_pointers
diff --git a/lib/libc/aarch64/gd_qnan.h b/lib/libc/aarch64/gd_qnan.h
new file mode 100644
index 0000000000000000000000000000000000000000..27e8d5811b7e029a527c1ffb25239c449d39bea9
--- /dev/null
+++ b/lib/libc/aarch64/gd_qnan.h
@@ -0,0 +1,21 @@
+/*
+ * MD header for contrib/gdtoa
+ *
+ * This file can be generated by compiling and running contrib/gdtoa/qnan.c
+ * on the target architecture after arith.h has been generated.
+ *
+ * $FreeBSD$
+ */
+
+#define f_QNAN 0x7fc00000
+#define d_QNAN0 0x0
+#define d_QNAN1 0x7ff80000
+#define ld_QNAN0 0x0
+#define ld_QNAN1 0x0
+#define ld_QNAN2 0x0
+#define ld_QNAN3 0x7fff8000
+#define ldus_QNAN0 0x0
+#define ldus_QNAN1 0x0
+#define ldus_QNAN2 0x0
+#define ldus_QNAN3 0x0
+#define ldus_QNAN4 0x0
diff --git a/lib/libc/arm/arith.h b/lib/libc/arm/arith.h
new file mode 100644
index 0000000000000000000000000000000000000000..86121bf9a80c0e224cece4b6b6c2cd880334e538
--- /dev/null
+++ b/lib/libc/arm/arith.h
@@ -0,0 +1,16 @@
+/*
+ * MD header for contrib/gdtoa
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * NOTE: The definitions in this file must be correct or strtod(3) and
+ * floating point formats in printf(3) will break! The file can be
+ * generated by running contrib/gdtoa/arithchk.c on the target
+ * architecture. See contrib/gdtoa/gdtoaimp.h for details.
+ */
+
+#define IEEE_8087
+#define Arith_Kind_ASL 1
+#define Sudden_Underflow
diff --git a/lib/libc/arm/gd_qnan.h b/lib/libc/arm/gd_qnan.h
new file mode 100644
index 0000000000000000000000000000000000000000..8fa9edd83415dd72c1982c61bcb7b732a020a18e
--- /dev/null
+++ b/lib/libc/arm/gd_qnan.h
@@ -0,0 +1,23 @@
+/*
+ * MD header for contrib/gdtoa
+ *
+ * This file can be generated by compiling and running contrib/gdtoa/qnan.c
+ * on the target architecture after arith.h has been generated.
+ *
+ * XXX I don't have ARM hardware, so I just guessed. --das
+ *
+ * $FreeBSD$
+ */
+
+#define f_QNAN 0x7fc00000
+#define d_QNAN0 0x0
+#define d_QNAN1 0x7ff80000
+#define ld_QNAN0 0x0
+#define ld_QNAN1 0xc0000000
+#define ld_QNAN2 0x7fff
+#define ld_QNAN3 0x0
+#define ldus_QNAN0 0x0
+#define ldus_QNAN1 0x0
+#define ldus_QNAN2 0x0
+#define ldus_QNAN3 0xc000
+#define ldus_QNAN4 0x7fff
diff --git a/lib/libc/gdtoa/glue.c b/lib/libc/gdtoa/glue.c
new file mode 100644
index 0000000000000000000000000000000000000000..39e491a7a277eff999944ea1d66774c03ef03519
--- /dev/null
+++ b/lib/libc/gdtoa/glue.c
@@ -0,0 +1,13 @@
+/*
+ * Machine-independent glue to integrate David Gay's gdtoa
+ * package into libc.
+ *
+ * $FreeBSD$
+ */
+
+#include
+
+pthread_mutex_t __gdtoa_locks[] = {
+ PTHREAD_MUTEX_INITIALIZER,
+ PTHREAD_MUTEX_INITIALIZER
+};
diff --git a/lib/libc/stdio/parsefloat.c b/lib/libc/stdio/parsefloat.c
new file mode 100644
index 0000000000000000000000000000000000000000..18a58b3a2236681d423c8e2bb505f126a9673d33
--- /dev/null
+++ b/lib/libc/stdio/parsefloat.c
@@ -0,0 +1,213 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Copyright (c) 2011 The FreeBSD Foundation
+ * All rights reserved.
+ * Portions of this software were developed by David Chisnall
+ * under sponsorship from the FreeBSD Foundation.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include
+#include
+#include
+#include "stdio_impl.h"
+
+int parsefloat(FILE *f, char *buf, char *end)
+{
+ char *commit, *p;
+ int infnanpos = 0, decptpos = 0;
+ enum {
+ S_START, S_GOTSIGN, S_INF, S_NAN, S_DONE, S_MAYBEHEX,
+ S_DIGITS, S_DECPT, S_FRAC, S_EXP, S_EXPDIGITS
+ } state = S_START;
+ unsigned char c;
+ int gotmantdig = 0, ishex = 0;
+ const char *decpt = "";
+
+ /*
+ * We set commit = p whenever the string we have read so far
+ * constitutes a valid representation of a floating point
+ * number by itself. At some point, the parse will complete
+ * or fail, and we will ungetc() back to the last commit point.
+ * To ensure that the file offset gets updated properly, it is
+ * always necessary to read at least one character that doesn't
+ * match; thus, we can't short-circuit "infinity" or "nan(...)".
+ */
+ commit = buf - 1;
+ for (p = buf; p < end; ) {
+ c = *f->rpos;
+reswitch:
+ switch (state) {
+ case S_START:
+ state = S_GOTSIGN;
+ if (c == '-' || c == '+')
+ break;
+ else
+ goto reswitch;
+ case S_GOTSIGN:
+ switch (c) {
+ case '0':
+ state = S_MAYBEHEX;
+ commit = p;
+ break;
+ case 'I':
+ case 'i':
+ state = S_INF;
+ break;
+ case 'N':
+ case 'n':
+ state = S_NAN;
+ break;
+ default:
+ state = S_DIGITS;
+ goto reswitch;
+ }
+ break;
+ case S_INF:
+ if (infnanpos > 6 ||
+ (c != "nfinity"[infnanpos] &&
+ c != "NFINITY"[infnanpos]))
+ goto parsedone;
+ if (infnanpos == 1 || infnanpos == 6)
+ commit = p; /* inf or infinity */
+ infnanpos++;
+ break;
+ case S_NAN:
+ switch (infnanpos) {
+ case 0:
+ if (c != 'A' && c != 'a')
+ goto parsedone;
+ break;
+ case 1:
+ if (c != 'N' && c != 'n')
+ goto parsedone;
+ else
+ commit = p;
+ break;
+ case 2:
+ if (c != '(')
+ goto parsedone;
+ break;
+ default:
+ if (c == ')') {
+ commit = p;
+ infnanpos = -2;
+ } else if (!isalnum(c) && c != '_')
+ goto parsedone;
+ break;
+ }
+ infnanpos++;
+ break;
+ case S_DONE:
+ goto parsedone;
+ case S_MAYBEHEX:
+ state = S_DIGITS;
+ if (c == 'X' || c == 'x') {
+ ishex = 1;
+ break;
+ } else { /* we saw a '0', but no 'x' */
+ gotmantdig = 1;
+ goto reswitch;
+ }
+ case S_DIGITS:
+ if ((ishex && isxdigit(c)) || isdigit(c)) {
+ gotmantdig = 1;
+ } else {
+ state = S_FRAC;
+ if (c != '.')
+ goto reswitch;
+ }
+ if (gotmantdig)
+ commit = p;
+ break;
+ case S_DECPT:
+ if (c == decpt[decptpos]) {
+ if (decpt[++decptpos] == '\0') {
+ /* We read the complete decpt seq. */
+ state = S_FRAC;
+ if (gotmantdig)
+ commit = p;
+ }
+ break;
+ } else if (!decptpos) {
+ /* We didn't read any decpt characters. */
+ state = S_FRAC;
+ goto reswitch;
+ } else {
+ /*
+ * We read part of a multibyte decimal point,
+ * but the rest is invalid, so bail.
+ */
+ goto parsedone;
+ }
+ case S_FRAC:
+ if (((c == 'E' || c == 'e') && !ishex) ||
+ ((c == 'P' || c == 'p') && ishex)) {
+ if (!gotmantdig)
+ goto parsedone;
+ else
+ state = S_EXP;
+ } else if ((ishex && isxdigit(c)) || isdigit(c)) {
+ commit = p;
+ gotmantdig = 1;
+ } else
+ goto parsedone;
+ break;
+ case S_EXP:
+ state = S_EXPDIGITS;
+ if (c == '-' || c == '+')
+ break;
+ else
+ goto reswitch;
+ case S_EXPDIGITS:
+ if (isdigit(c))
+ commit = p;
+ else
+ goto parsedone;
+ break;
+ default:
+ abort();
+ }
+ *p++ = c;
+ if (f->rpos != f->shend)
+ f->rpos++;
+ else
+ break;
+ }
+
+parsedone:
+ while (commit < --p)
+ --f->rpos;
+ *++commit = '\0';
+ return (commit - buf);
+}
diff --git a/lib/libc/stdlib/qsort.c b/lib/libc/stdlib/qsort.c
new file mode 100644
index 0000000000000000000000000000000000000000..42b9eadd010aeb3c31d0905edc153711c73ff67f
--- /dev/null
+++ b/lib/libc/stdlib/qsort.c
@@ -0,0 +1,296 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)qsort.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+// #include
+
+#if defined(__GNUC__)
+#define __IDSTRING(name,string) __asm__(".ident\t\"" string "\"")
+#else
+/*
+ * The following definition might not work well if used in header files,
+ * but it should be better than nothing. If you want a "do nothing"
+ * version, then it should generate some harmless declaration, such as:
+ * #define __IDSTRING(name,string) struct __hack
+ */
+#define __IDSTRING(name,string) static const char name[] __unused = string
+#endif
+
+/*
+ * Embed the rcs id of a source file in the resulting library. Note that in
+ * more recent ELF binutils, we use .ident allowing the ID to be stripped.
+ * Usage:
+ * __FBSDID("$FreeBSD$");
+ */
+#ifndef __FBSDID
+#if !defined(STRIP_FBSDID)
+#define __FBSDID(s) __IDSTRING(__CONCAT(__rcsid_,__LINE__),s)
+#else
+#define __FBSDID(s) struct __hack
+#endif
+#endif
+
+#if defined(__GNUC__)
+#define __GNUC_PREREQ__(ma, mi) \
+ (__GNUC__ > (ma) || __GNUC__ == (ma) && __GNUC_MINOR__ >= (mi))
+#else
+#define __GNUC_PREREQ__(ma, mi) 0
+#endif
+
+#if !__GNUC_PREREQ__(2, 5)
+#define __unused
+#endif
+#if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7
+#define __unused
+/* XXX Find out what to do for __packed, __aligned and __section */
+#endif
+#if __GNUC_PREREQ__(2, 7)
+#define __unused __attribute__((__unused__))
+#endif
+
+#if __GNUC_PREREQ__(2, 96)
+#define __predict_false(exp) __builtin_expect((exp), 0)
+#else
+#define __predict_false(exp) (exp)
+#endif
+
+__FBSDID("$FreeBSD$");
+
+#include
+#include
+#include
+#include
+// #include "libc_private.h"
+
+#if defined(I_AM_QSORT_R)
+typedef int cmp_t(void *, const void *, const void *);
+#elif defined(I_AM_QSORT_S)
+typedef int cmp_t(const void *, const void *, void *);
+#else
+typedef int cmp_t(const void *, const void *);
+#endif
+static inline char *med3(char *, char *, char *, cmp_t *, void *);
+
+#define MIN(a, b) ((a) < (b) ? a : b)
+
+/*
+ * Qsort routine from Bentley & McIlroy's "Engineering a Sort Function".
+ */
+
+static inline void
+swapfunc(char *a, char *b, size_t es)
+{
+ char t;
+
+ do {
+ t = *a;
+ *a++ = *b;
+ *b++ = t;
+ } while (--es > 0);
+}
+
+#define vecswap(a, b, n) \
+ if ((n) > 0) swapfunc(a, b, n)
+
+#if defined(I_AM_QSORT_R)
+#define CMP(t, x, y) (cmp((t), (x), (y)))
+#elif defined(I_AM_QSORT_S)
+#define CMP(t, x, y) (cmp((x), (y), (t)))
+#else
+#define CMP(t, x, y) (cmp((x), (y)))
+#endif
+
+static inline char *
+med3(char *a, char *b, char *c, cmp_t *cmp, void *thunk
+#if !defined(I_AM_QSORT_R) && !defined(I_AM_QSORT_S)
+__unused
+#endif
+)
+{
+ return CMP(thunk, a, b) < 0 ?
+ (CMP(thunk, b, c) < 0 ? b : (CMP(thunk, a, c) < 0 ? c : a ))
+ :(CMP(thunk, b, c) > 0 ? b : (CMP(thunk, a, c) < 0 ? a : c ));
+}
+
+/*
+ * The actual qsort() implementation is static to avoid preemptible calls when
+ * recursing. Also give them different names for improved debugging.
+ */
+#if defined(I_AM_QSORT_R)
+#define local_qsort local_qsort_r
+#elif defined(I_AM_QSORT_S)
+#define local_qsort local_qsort_s
+#endif
+static void
+local_qsort(void *a, size_t n, size_t es, cmp_t *cmp, void *thunk)
+{
+ char *pa, *pb, *pc, *pd, *pl, *pm, *pn;
+ size_t d1, d2;
+ int cmp_result;
+ int swap_cnt;
+
+ if (__predict_false(n == 0))
+ return;
+loop:
+ swap_cnt = 0;
+ if (n < 7) {
+ for (pm = (char *)a + es; pm < (char *)a + n * es; pm += es)
+ for (pl = pm;
+ pl > (char *)a && CMP(thunk, pl - es, pl) > 0;
+ pl -= es)
+ swapfunc(pl, pl - es, es);
+ return;
+ }
+ pm = (char *)a + (n / 2) * es;
+ if (n > 7) {
+ pl = a;
+ pn = (char *)a + (n - 1) * es;
+ if (n > 40) {
+ size_t d = (n / 8) * es;
+
+ pl = med3(pl, pl + d, pl + 2 * d, cmp, thunk);
+ pm = med3(pm - d, pm, pm + d, cmp, thunk);
+ pn = med3(pn - 2 * d, pn - d, pn, cmp, thunk);
+ }
+ pm = med3(pl, pm, pn, cmp, thunk);
+ }
+ swapfunc(a, pm, es);
+ pa = pb = (char *)a + es;
+
+ pc = pd = (char *)a + (n - 1) * es;
+ for (;;) {
+ while (pb <= pc && (cmp_result = CMP(thunk, pb, a)) <= 0) {
+ if (cmp_result == 0) {
+ swap_cnt = 1;
+ swapfunc(pa, pb, es);
+ pa += es;
+ }
+ pb += es;
+ }
+ while (pb <= pc && (cmp_result = CMP(thunk, pc, a)) >= 0) {
+ if (cmp_result == 0) {
+ swap_cnt = 1;
+ swapfunc(pc, pd, es);
+ pd -= es;
+ }
+ pc -= es;
+ }
+ if (pb > pc)
+ break;
+ swapfunc(pb, pc, es);
+ swap_cnt = 1;
+ pb += es;
+ pc -= es;
+ }
+ if (swap_cnt == 0) { /* Switch to insertion sort */
+ for (pm = (char *)a + es; pm < (char *)a + n * es; pm += es)
+ for (pl = pm;
+ pl > (char *)a && CMP(thunk, pl - es, pl) > 0;
+ pl -= es)
+ swapfunc(pl, pl - es, es);
+ return;
+ }
+
+ pn = (char *)a + n * es;
+ d1 = MIN(pa - (char *)a, pb - pa);
+ vecswap(a, pb - d1, d1);
+ d1 = MIN(pd - pc, pn - pd - es);
+ vecswap(pb, pn - d1, d1);
+
+ d1 = pb - pa;
+ d2 = pd - pc;
+ if (d1 <= d2) {
+ /* Recurse on left partition, then iterate on right partition */
+ if (d1 > es) {
+ local_qsort(a, d1 / es, es, cmp, thunk);
+ }
+ if (d2 > es) {
+ /* Iterate rather than recurse to save stack space */
+ /* qsort(pn - d2, d2 / es, es, cmp); */
+ a = pn - d2;
+ n = d2 / es;
+ goto loop;
+ }
+ } else {
+ /* Recurse on right partition, then iterate on left partition */
+ if (d2 > es) {
+ local_qsort(pn - d2, d2 / es, es, cmp, thunk);
+ }
+ if (d1 > es) {
+ /* Iterate rather than recurse to save stack space */
+ /* qsort(a, d1 / es, es, cmp); */
+ n = d1 / es;
+ goto loop;
+ }
+ }
+}
+
+#if defined(I_AM_QSORT_R)
+void
+qsort_r(void *a, size_t n, size_t es, void *thunk, cmp_t *cmp)
+{
+ local_qsort_r(a, n, es, cmp, thunk);
+}
+#elif defined(I_AM_QSORT_S)
+errno_t
+qsort_s(void *a, rsize_t n, rsize_t es, cmp_t *cmp, void *thunk)
+{
+ if (n > RSIZE_MAX) {
+ __throw_constraint_handler_s("qsort_s : n > RSIZE_MAX", EINVAL);
+ return (EINVAL);
+ } else if (es > RSIZE_MAX) {
+ __throw_constraint_handler_s("qsort_s : es > RSIZE_MAX",
+ EINVAL);
+ return (EINVAL);
+ } else if (n != 0) {
+ if (a == NULL) {
+ __throw_constraint_handler_s("qsort_s : a == NULL",
+ EINVAL);
+ return (EINVAL);
+ } else if (cmp == NULL) {
+ __throw_constraint_handler_s("qsort_s : cmp == NULL",
+ EINVAL);
+ return (EINVAL);
+ }
+ }
+
+ local_qsort_s(a, n, es, cmp, thunk);
+ return (0);
+}
+#else
+void
+qsort(void *a, size_t n, size_t es, cmp_t *cmp)
+{
+ local_qsort(a, n, es, cmp, NULL);
+}
+#endif
\ No newline at end of file