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#!/bin/sh

# Copyright (C) 1996 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

if
test -r $2
then
if
cmp $1 $2 > /dev/null
then
echo $2 is unchanged
rm -f $1
else
mv -f $1 $2
fi
else
mv -f $1 $2
fi
/* Local definitions for the decNumber C Library.
   Copyright (C) 2007-2017 Free Software Foundation, Inc.
   Contributed by IBM Corporation.  Author Mike Cowlishaw.

   This file is part of GCC.

   GCC is free software; you can redistribute it and/or modify it under
   the terms of the GNU General Public License as published by the Free
   Software Foundation; either version 3, or (at your option) any later
   version.

   GCC is distributed in the hope that it will be useful, but WITHOUT ANY
   WARRANTY; without even the implied warranty of MERCHANTABILITY or
   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   for more details.

Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.

You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
<http://www.gnu.org/licenses/>.  */

/* ------------------------------------------------------------------ */
/* decNumber package local type, tuning, and macro definitions	      */
/* ------------------------------------------------------------------ */
/* This header file is included by all modules in the decNumber       */
/* library, and contains local type definitions, tuning parameters,   */
/* etc.  It should not need to be used by application programs.       */
/* decNumber.h or one of decDouble (etc.) must be included first.     */
/* ------------------------------------------------------------------ */

#if !defined(DECNUMBERLOC)
  #define DECNUMBERLOC
  #define DECVERSION	"decNumber 3.61" /* Package Version [16 max.] */
  #define DECNLAUTHOR	"Mike Cowlishaw"	      /* Who to blame */

  #include <stdlib.h>	      /* for abs			      */
  #include <string.h>	      /* for memset, strcpy		      */
  #include "dconfig.h"        /* for WORDS_BIGENDIAN		      */

  /* Conditional code flag -- set this to match hardware platform     */
  /* 1=little-endian, 0=big-endian                                   */
  #if WORDS_BIGENDIAN
  #define DECLITEND 0
  #else
  #define DECLITEND 1
  #endif

  #if !defined(DECLITEND)
  #define DECLITEND 1	      /* 1=little-endian, 0=big-endian	      */
  #endif

  /* Conditional code flag -- set this to 1 for best performance      */
  #if !defined(DECUSE64)
  #define DECUSE64  1	      /* 1=use int64s, 0=int32 & smaller only */
  #endif

  /* Conditional check flags -- set these to 0 for best performance   */
  #if !defined(DECCHECK)
  #define DECCHECK  0	      /* 1 to enable robust checking	      */
  #endif
  #if !defined(DECALLOC)
  #define DECALLOC  0	      /* 1 to enable memory accounting	      */
  #endif
  #if !defined(DECTRACE)
  #define DECTRACE  0	      /* 1 to trace certain internals, etc.   */
  #endif

  /* Tuning parameter for decNumber (arbitrary precision) module      */
  #if !defined(DECBUFFER)
  #define DECBUFFER 36	      /* Size basis for local buffers.	This  */
			      /* should be a common maximum precision */
			      /* rounded up to a multiple of 4; must  */
			      /* be zero or positive.		      */
  #endif

  /* ---------------------------------------------------------------- */
  /* Definitions for all modules (general-purpose)		      */
  /* ---------------------------------------------------------------- */

  /* Local names for common types -- for safety, decNumber modules do */
  /* not use int or long directly.				      */
  #define Flag	 uint8_t
  #define Byte	 int8_t
  #define uByte  uint8_t
  #define Short  int16_t
  #define uShort uint16_t
  #define Int	 int32_t
  #define uInt	 uint32_t
  #define Unit	 decNumberUnit
  #if DECUSE64
  #define Long	 int64_t
  #define uLong  uint64_t
  #endif

  /* Development-use definitions				      */
  typedef long int LI;	      /* for printf arguments only	      */
  #define DECNOINT  0	      /* 1 to check no internal use of 'int'  */
			      /*   or stdint types		      */
  #if DECNOINT
    /* if these interfere with your C includes, do not set DECNOINT   */
    #define int     ?	      /* enable to ensure that plain C 'int'  */
    #define long    ??	      /* .. or 'long' types are not used      */
  #endif

  /* Shared lookup tables					      */
  extern const uByte  DECSTICKYTAB[10]; /* re-round digits if sticky  */
  extern const uInt   DECPOWERS[10];	/* powers of ten table	      */
  /* The following are included from decDPD.h			      */
  #include "decDPDSymbols.h"
  extern const uShort DPD2BIN[1024];	/* DPD -> 0-999 	      */
  extern const uShort BIN2DPD[1000];	/* 0-999 -> DPD 	      */
  extern const uInt   DPD2BINK[1024];	/* DPD -> 0-999000	      */
  extern const uInt   DPD2BINM[1024];	/* DPD -> 0-999000000	      */
  extern const uByte  DPD2BCD8[4096];	/* DPD -> ddd + len	      */
  extern const uByte  BIN2BCD8[4000];	/* 0-999 -> ddd + len	      */
  extern const uShort BCD2DPD[2458];	/* 0-0x999 -> DPD (0x999=2457)*/

  /* LONGMUL32HI -- set w=(u*v)>>32, where w, u, and v are uInts      */
  /* (that is, sets w to be the high-order word of the 64-bit result; */
  /* the low-order word is simply u*v.) 			      */
  /* This version is derived from Knuth via Hacker's Delight;	      */
  /* it seems to optimize better than some others tried 	      */
  #define LONGMUL32HI(w, u, v) {	     \
    uInt u0, u1, v0, v1, w0, w1, w2, t;      \
    u0=u & 0xffff; u1=u>>16;		     \
    v0=v & 0xffff; v1=v>>16;		     \
    w0=u0*v0;				     \
    t=u1*v0 + (w0>>16); 		     \
    w1=t & 0xffff; w2=t>>16;		     \
    w1=u0*v1 + w1;			     \
    (w)=u1*v1 + w2 + (w1>>16);}

  /* ROUNDUP -- round an integer up to a multiple of n		      */
  #define ROUNDUP(i, n) ((((i)+(n)-1)/n)*n)
  #define ROUNDUP4(i)	(((i)+3)&~3)	/* special for n=4	      */

  /* ROUNDDOWN -- round an integer down to a multiple of n	      */
  #define ROUNDDOWN(i, n) (((i)/n)*n)
  #define ROUNDDOWN4(i)   ((i)&~3)	/* special for n=4	      */

  /* References to multi-byte sequences under different sizes; these  */
  /* require locally declared variables, but do not violate strict    */
  /* aliasing or alignment (as did the UINTAT simple cast to uInt).   */
  /* Variables needed are uswork, uiwork, etc. [so do not use at same */
  /* level in an expression, e.g., UBTOUI(x)==UBTOUI(y) may fail].    */

  /* Return a uInt, etc., from bytes starting at a char* or uByte*    */
  #define UBTOUS(b)  (memcpy((void *)&uswork, b, 2), uswork)
  #define UBTOUI(b)  (memcpy((void *)&uiwork, b, 4), uiwork)

  /* Store a uInt, etc., into bytes starting at a char* or uByte*.    */
  /* Has to use uiwork because i may be an expression.		      */
  #define UBFROMUS(b, i)  (uswork=(i), memcpy(b, (void *)&uswork, 2))
  #define UBFROMUI(b, i)  (uiwork=(i), memcpy(b, (void *)&uiwork, 4))

  /* X10 and X100 -- multiply integer i by 10 or 100		      */
  /* [shifts are usually faster than multiply; could be conditional]  */
  #define X10(i)  (((i)<<1)+((i)<<3))
  #define X100(i) (((i)<<2)+((i)<<5)+((i)<<6))

  /* MAXI and MINI -- general max & min (not in ANSI) for integers    */
  #define MAXI(x,y) ((x)<(y)?(y):(x))
  #define MINI(x,y) ((x)>(y)?(y):(x))

  /* Useful constants						      */
  #define BILLION      1000000000	     /* 10**9		      */
  /* CHARMASK: 0x30303030 for ASCII/UTF8; 0xF0F0F0F0 for EBCDIC       */
  #define CHARMASK ((((((((uInt)'0')<<8)+'0')<<8)+'0')<<8)+'0')


  /* ---------------------------------------------------------------- */
  /* Definitions for arbitary-precision modules (only valid after     */
  /* decNumber.h has been included)				      */
  /* ---------------------------------------------------------------- */

  /* Limits and constants					      */
  #define DECNUMMAXP 999999999	/* maximum precision code can handle  */
  #define DECNUMMAXE 999999999	/* maximum adjusted exponent ditto    */
  #define DECNUMMINE -999999999 /* minimum adjusted exponent ditto    */
  #if (DECNUMMAXP != DEC_MAX_DIGITS)
    #error Maximum digits mismatch
  #endif
  #if (DECNUMMAXE != DEC_MAX_EMAX)
    #error Maximum exponent mismatch
  #endif
  #if (DECNUMMINE != DEC_MIN_EMIN)
    #error Minimum exponent mismatch
  #endif

  /* Set DECDPUNMAX -- the maximum integer that fits in DECDPUN       */
  /* digits, and D2UTABLE -- the initializer for the D2U table	      */
  #if	DECDPUN==1
    #define DECDPUNMAX 9
    #define D2UTABLE {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,  \
		      18,19,20,21,22,23,24,25,26,27,28,29,30,31,32, \
		      33,34,35,36,37,38,39,40,41,42,43,44,45,46,47, \
		      48,49}
  #elif DECDPUN==2
    #define DECDPUNMAX 99
    #define D2UTABLE {0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,  \
		      11,11,12,12,13,13,14,14,15,15,16,16,17,17,18, \
		      18,19,19,20,20,21,21,22,22,23,23,24,24,25}
  #elif DECDPUN==3
    #define DECDPUNMAX 999
    #define D2UTABLE {0,1,1,1,2,2,2,3,3,3,4,4,4,5,5,5,6,6,6,7,7,7,  \
		      8,8,8,9,9,9,10,10,10,11,11,11,12,12,12,13,13, \
		      13,14,14,14,15,15,15,16,16,16,17}
  #elif DECDPUN==4
    #define DECDPUNMAX 9999
    #define D2UTABLE {0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,  \
		      6,6,6,7,7,7,7,8,8,8,8,9,9,9,9,10,10,10,10,11, \
		      11,11,11,12,12,12,12,13}
  #elif DECDPUN==5
    #define DECDPUNMAX 99999
    #define D2UTABLE {0,1,1,1,1,1,2,2,2,2,2,3,3,3,3,3,4,4,4,4,4,5,  \
		      5,5,5,5,6,6,6,6,6,7,7,7,7,7,8,8,8,8,8,9,9,9,  \
		      9,9,10,10,10,10}
  #elif DECDPUN==6
    #define DECDPUNMAX 999999
    #define D2UTABLE {0,1,1,1,1,1,1,2,2,2,2,2,2,3,3,3,3,3,3,4,4,4,  \
		      4,4,4,5,5,5,5,5,5,6,6,6,6,6,6,7,7,7,7,7,7,8,  \
		      8,8,8,8,8,9}
  #elif DECDPUN==7
    #define DECDPUNMAX 9999999
    #define D2UTABLE {0,1,1,1,1,1,1,1,2,2,2,2,2,2,2,3,3,3,3,3,3,3,  \
		      4,4,4,4,4,4,4,5,5,5,5,5,5,5,6,6,6,6,6,6,6,7,  \
		      7,7,7,7,7,7}
  #elif DECDPUN==8
    #define DECDPUNMAX 99999999
    #define D2UTABLE {0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,3,3,  \
		      3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,6,6,6,  \
		      6,6,6,6,6,7}
  #elif DECDPUN==9
    #define DECDPUNMAX 999999999
    #define D2UTABLE {0,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,3,3,3,  \
		      3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,  \
		      5,5,6,6,6,6}
  #elif defined(DECDPUN)
    #error DECDPUN must be in the range 1-9
  #endif

  /* ----- Shared data (in decNumber.c) ----- */
  /* Public lookup table used by the D2U macro (see below)	      */
  #define DECMAXD2U 49
  extern const uByte d2utable[DECMAXD2U+1];

  /* ----- Macros ----- */
  /* ISZERO -- return true if decNumber dn is a zero		      */
  /* [performance-critical in some situations]			      */
  #define ISZERO(dn) decNumberIsZero(dn)     /* now just a local name */

  /* D2U -- return the number of Units needed to hold d digits	      */
  /* (runtime version, with table lookaside for small d)	      */
  #if DECDPUN==8
    #define D2U(d) ((unsigned)((d)<=DECMAXD2U?d2utable[d]:((d)+7)>>3))
  #elif DECDPUN==4
    #define D2U(d) ((unsigned)((d)<=DECMAXD2U?d2utable[d]:((d)+3)>>2))
  #else
    #define D2U(d) ((d)<=DECMAXD2U?d2utable[d]:((d)+DECDPUN-1)/DECDPUN)
  #endif
  /* SD2U -- static D2U macro (for compile-time calculation)	      */
  #define SD2U(d) (((d)+DECDPUN-1)/DECDPUN)

  /* MSUDIGITS -- returns digits in msu, from digits, calculated      */
  /* using D2U							      */
  #define MSUDIGITS(d) ((d)-(D2U(d)-1)*DECDPUN)

  /* D2N -- return the number of decNumber structs that would be      */
  /* needed to contain that number of digits (and the initial	      */
  /* decNumber struct) safely.	Note that one Unit is included in the */
  /* initial structure.  Used for allocating space that is aligned on */
  /* a decNumber struct boundary. */
  #define D2N(d) \
    ((((SD2U(d)-1)*sizeof(Unit))+sizeof(decNumber)*2-1)/sizeof(decNumber))

  /* TODIGIT -- macro to remove the leading digit from the unsigned   */
  /* integer u at column cut (counting from the right, LSD=0) and     */
  /* place it as an ASCII character into the character pointed to by  */
  /* c.  Note that cut must be <= 9, and the maximum value for u is   */
  /* 2,000,000,000 (as is needed for negative exponents of	      */
  /* subnormals).  The unsigned integer pow is used as a temporary    */
  /* variable. */
  #define TODIGIT(u, cut, c, pow) {	  \
    *(c)='0';				  \
    pow=DECPOWERS[cut]*2;		  \
    if ((u)>pow) {			  \
      pow*=4;				  \
      if ((u)>=pow) {(u)-=pow; *(c)+=8;}  \
      pow/=2;				  \
      if ((u)>=pow) {(u)-=pow; *(c)+=4;}  \
      pow/=2;				  \
      } 				  \
    if ((u)>=pow) {(u)-=pow; *(c)+=2;}	  \
    pow/=2;				  \
    if ((u)>=pow) {(u)-=pow; *(c)+=1;}	  \
    }

  /* ---------------------------------------------------------------- */
  /* Definitions for fixed-precision modules (only valid after	      */
  /* decSingle.h, decDouble.h, or decQuad.h has been included)	      */
  /* ---------------------------------------------------------------- */

  /* bcdnum -- a structure describing a format-independent finite     */
  /* number, whose coefficient is a string of bcd8 uBytes	      */
  typedef struct {
    uByte   *msd;	      /* -> most significant digit	      */
    uByte   *lsd;	      /* -> least ditto 		      */
    uInt     sign;	      /* 0=positive, DECFLOAT_Sign=negative   */
    Int      exponent;	      /* Unadjusted signed exponent (q), or   */
			      /* DECFLOAT_NaN etc. for a special      */
    } bcdnum;

  /* Test if exponent or bcdnum exponent must be a special, etc.      */
  #define EXPISSPECIAL(exp) ((exp)>=DECFLOAT_MinSp)
  #define EXPISINF(exp) (exp==DECFLOAT_Inf)
  #define EXPISNAN(exp) (exp==DECFLOAT_qNaN || exp==DECFLOAT_sNaN)
  #define NUMISSPECIAL(num) (EXPISSPECIAL((num)->exponent))

  /* Refer to a 32-bit word or byte in a decFloat (df) by big-endian  */
  /* (array) notation (the 0 word or byte contains the sign bit),     */
  /* automatically adjusting for endianness; similarly address a word */
  /* in the next-wider format (decFloatWider, or dfw)		      */
  #define DECWORDS  (DECBYTES/4)
  #define DECWWORDS (DECWBYTES/4)
  #if DECLITEND
    #define DFBYTE(df, off)   ((df)->bytes[DECBYTES-1-(off)])
    #define DFWORD(df, off)   ((df)->words[DECWORDS-1-(off)])
    #define DFWWORD(dfw, off) ((dfw)->words[DECWWORDS-1-(off)])
  #else
    #define DFBYTE(df, off)   ((df)->bytes[off])
    #define DFWORD(df, off)   ((df)->words[off])
    #define DFWWORD(dfw, off) ((dfw)->words[off])
  #endif

  /* Tests for sign or specials, directly on DECFLOATs		      */
  #define DFISSIGNED(df)   (DFWORD(df, 0)&0x80000000)
  #define DFISSPECIAL(df) ((DFWORD(df, 0)&0x78000000)==0x78000000)
  #define DFISINF(df)	  ((DFWORD(df, 0)&0x7c000000)==0x78000000)
  #define DFISNAN(df)	  ((DFWORD(df, 0)&0x7c000000)==0x7c000000)
  #define DFISQNAN(df)	  ((DFWORD(df, 0)&0x7e000000)==0x7c000000)
  #define DFISSNAN(df)	  ((DFWORD(df, 0)&0x7e000000)==0x7e000000)

  /* Shared lookup tables					      */
#include "decCommonSymbols.h"
  extern const uInt   DECCOMBMSD[64];	/* Combination field -> MSD   */
  extern const uInt   DECCOMBFROM[48];	/* exp+msd -> Combination     */

  /* Private generic (utility) routine				      */
  #if DECCHECK || DECTRACE
    extern void decShowNum(const bcdnum *, const char *);
  #endif

  /* Format-dependent macros and constants			      */
  #if defined(DECPMAX)

    /* Useful constants 					      */
    #define DECPMAX9  (ROUNDUP(DECPMAX, 9)/9)  /* 'Pmax' in 10**9s    */
    /* Top words for a zero					      */
    #define SINGLEZERO	 0x22500000
    #define DOUBLEZERO	 0x22380000
    #define QUADZERO	 0x22080000
    /* [ZEROWORD is defined to be one of these in the DFISZERO macro] */

    /* Format-dependent common tests:				      */
    /*	 DFISZERO   -- test for (any) zero			      */
    /*	 DFISCCZERO -- test for coefficient continuation being zero   */
    /*	 DFISCC01   -- test for coefficient contains only 0s and 1s   */
    /*	 DFISINT    -- test for finite and exponent q=0 	      */
    /*	 DFISUINT01 -- test for sign=0, finite, exponent q=0, and     */
    /*		       MSD=0 or 1				      */
    /*	 ZEROWORD is also defined here. 			      */
    /* In DFISZERO the first test checks the least-significant word   */
    /* (most likely to be non-zero); the penultimate tests MSD and    */
    /* DPDs in the signword, and the final test excludes specials and */
    /* MSD>7.  DFISINT similarly has to allow for the two forms of    */
    /* MSD codes.  DFISUINT01 only has to allow for one form of MSD   */
    /* code.							      */
    #if DECPMAX==7
      #define ZEROWORD SINGLEZERO
      /* [test macros not needed except for Zero]		      */
      #define DFISZERO(df)  ((DFWORD(df, 0)&0x1c0fffff)==0	   \
			  && (DFWORD(df, 0)&0x60000000)!=0x60000000)
    #elif DECPMAX==16
      #define ZEROWORD DOUBLEZERO
      #define DFISZERO(df)  ((DFWORD(df, 1)==0			   \
			  && (DFWORD(df, 0)&0x1c03ffff)==0	   \
			  && (DFWORD(df, 0)&0x60000000)!=0x60000000))
      #define DFISINT(df) ((DFWORD(df, 0)&0x63fc0000)==0x22380000  \
			 ||(DFWORD(df, 0)&0x7bfc0000)==0x6a380000)
      #define DFISUINT01(df) ((DFWORD(df, 0)&0xfbfc0000)==0x22380000)
      #define DFISCCZERO(df) (DFWORD(df, 1)==0			   \
			  && (DFWORD(df, 0)&0x0003ffff)==0)
      #define DFISCC01(df)  ((DFWORD(df, 0)&~0xfffc9124)==0	   \
			  && (DFWORD(df, 1)&~0x49124491)==0)
    #elif DECPMAX==34
      #define ZEROWORD QUADZERO
      #define DFISZERO(df)  ((DFWORD(df, 3)==0			   \