(FILECREATED "12-Jul-86 17:26:34" {ERIS}<LISPCORE>SOURCES>ADDARITH.;17 38279
changes to: (VARS ADDARITHCOMS)
(MACROS LOGNOT)
(FNS LOGNOT LDB DPB)
previous date: "29-May-86 17:56:54" {ERIS}<LISPCORE>SOURCES>ADDARITH.;16)
(* Copyright (c) 1982, 1983, 1984, 1985, 1986 by Xerox Corporation. All rights reserved.)
(PRETTYCOMPRINT ADDARITHCOMS)
(RPAQQ ADDARITHCOMS ((LOCALVARS . T)
(COMS (* Rational operations and useful constants)
(FNS \RTIMES2 \RATIONALIZE \RPLUS2 \RMINUS CREATERATIONAL
RATIONALTOINTEGER)
(RECORDS RATIONAL))
(* OK)
(MACROS MASK.1'S MASK.0'S BITTEST BITSET BITCLEAR LOGNOT)
(FNS LOGNOT)
(* "BYTE hacking functions")
(RECORDS BYTESPEC)
(FNS LOADBYTE DEPOSITBYTE)
(MACROS LOADBYTE DEPOSITBYTE)
(FNS IMODLESSP IMODPLUS IMODDIFFERENCE)
(MACROS IMODPLUS IMODDIFFERENCE IMOD)
(FNS ROT)
(OPTIMIZERS ROT-INLINE)
(MACROS .ROT.)
(* NOT OK YET)
(MACROS LDB DPB BYTE BYTESIZE BYTEPOSITION)
(FNS LDB DPB)
(FNS \LDBEXPANDER \DPBEXPANDER)
(COMS (* "Primitive Functions for extracting fields as integers")
(MACROS \XLOADBYTEWORD)
(FNS \PUTBASEBITS)
(* "Primitive functions, especially needed for CommonLisp array package.")
(DECLARE: DONTCOPY (MACROS .HIHALFWORDLO. .HIHALFWORDHI. .LOHALFWORDLO.
.LOHALFWORDHI.)
(EXPORT (MACROS \GETBASENIBBLE \PUTBASENIBBLE \GETBASEBIT
\PUTBASEBIT)))
(FNS \GETBASENIBBLE \PUTBASENIBBLE \GETBASEBIT \PUTBASEBIT))
(COMS (*
"Beginning of rewrite of some LLARITH things, modularly using the macros of
this file")
(DECLARE: DONTCOPY (EXPORT (CONSTANTS MASK0WORD1'S MASK1WORD0'S
MASKWORD1'S MASKHALFWORD1'S
BITSPERHALFWORD)
(MACROS EQZEROP)
(MACROS \MOVETOBOX .XUNBOX. .XLLSH. .XLLSH1.
.XLRSH. .ADD.2WORD.INTEGERS.
.SUB.2WORD.INTEGERS. .32BITMUL.)
(MACROS .SUMSMALLMOD. .DIFFERENCESMALLMOD.))
(MACROS .ADD.2WORD.INTEGERS. .SUB.2WORD.INTEGERS. .32BITMUL.)))))
(DECLARE: DOEVAL@COMPILE DONTCOPY
(LOCALVARS . T)
)
(* Rational operations and useful constants)
(DEFINEQ
(\RTIMES2
[LAMBDA (R1 R2) (* lmm "14-Apr-85 19:46")
(* Rational multiply)
(if (FLOATP R1)
then (SETQ R1 (MAKERATIONAL R1)))
(if (FLOATP R2)
then (SETQ R2 (MAKERATIONAL R2)))
(if (FIXP R1)
then [if (FIXP R2)
then (ITIMES R1 R2)
else (if (EQUAL R1 (fetch DENOMINATOR of R2))
then (fetch NUMERATOR of R2)
else (\RATIONALIZE (ITIMES R1 (fetch NUMERATOR of R2))
(fetch DENOMINATOR of R2]
elseif (FIXP R2)
then (if (EQUAL R2 (fetch DENOMINATOR of R1))
then (fetch NUMERATOR of R1)
else (\RATIONALIZE (TIMES R2 (fetch NUMERATOR of R1))
(fetch DENOMINATOR of R1)))
elseif (EQUAL (fetch NUMERATOR of R1)
(fetch DENOMINATOR of R2))
then (\RATIONALIZE (fetch NUMERATOR of R2)
(fetch DENOMINATOR of R1))
elseif (EQUAL (fetch DENOMINATOR of R1)
(fetch NUMERATOR of R2))
then (\RATIONALIZE (fetch NUMERATOR of R1)
(fetch DENOMINATOR of R2))
else (\RATIONALIZE (ITIMES (fetch NUMERATOR of R1)
(fetch NUMERATOR of R2))
(ITIMES (fetch DENOMINATOR of R1)
(fetch DENOMINATOR of R2])
(\RATIONALIZE
[LAMBDA (NUM DEN) (* lmm "14-Apr-85 20:19")
(LET ((GCD (GCD NUM DEN)))
(if (EQUAL DEN GCD)
then (IQUOTIENT NUM GCD)
else (create RATIONAL
NUMERATOR ←(IQUOTIENT NUM GCD)
DENOMINATOR ←(IQUOTIENT DEN GCD])
(\RPLUS2
[LAMBDA (R1 R2) (* lmm "14-Apr-85 19:42")
(* Rational multiply)
(IF (FLOATP R1)
THEN (SETQ R1 (MAKERATIONAL R1)))
(IF (FLOATP R2)
THEN (SETQ R2 (MAKERATIONAL R2)))
(if (FIXP R1)
then (if (FIXP R2)
then (IPLUS R1 R2)
else (\RATIONALIZE (IPLUS (fetch NUMERATOR of R2)
(ITIMES R1 (fetch DENOMINATOR of R2)))
(fetch DENOMINATOR of R2)))
elseif (FIXP R2)
then (\RATIONALIZE (IPLUS (fetch NUMERATOR of R1)
(ITIMES R2 (fetch DENOMINATOR of R1)))
(fetch DENOMINATOR of R1))
elseif (EQUAL (fetch DENOMINATOR of R1)
(fetch DENOMINATOR of R2))
then (\RATIONALIZE (IPLUS (fetch NUMERATOR of R1)
(fetch NUMERATOR of R2))
(fetch DENOMINATOR of R2))
else (\RATIONALIZE (IPLUS (ITIMES (fetch DENOMINATOR of R1)
(fetch NUMERATOR of R2))
(ITIMES (fetch NUMERATOR of R1)
(fetch DENOMINATOR of R2)))
(ITIMES (fetch DENOMINATOR of R1)
(fetch DENOMINATOR of R2])
(\RMINUS
(LAMBDA (X) (* JonL " 4-Jan-85 16:08")
(if (type? RATIONAL X)
then (create RATIONAL
NUMERATOR ←(MINUS (fetch (RATIONAL NUMERATOR) of X))
DENOMINATOR ←(fetch (RATIONAL NUMERATOR) of X))
else (MINUS X))))
(CREATERATIONAL
[LAMBDA (NUMERATOR DENOMINATOR) (* jds "10-Jan-85 15:40")
(* Creates a normalized rational)
(PROG ((PNUM NUMERATOR)
(PDEN DENOMINATOR)
GCF NEGFLG)
(* * Convert to positive format first, since this will minimize consing in GCD and keep the IQUOTIENT in ucode
(where possible))
(if (ILESSP PNUM 0)
then (SETQ PNUM (IMINUS PNUM))
(if (ILESSP PDEN 0)
then (SETQ PDEN (IMINUS PDEN))
else (SETQ NEGFLG T))
else (if (ILESSP PDEN 0)
then (SETQ PDEN (IMINUS PDEN))
(SETQ NEGFLG T)))
(SETQ GCF (GCD PNUM PDEN)) (* Note that the GCD will always be positive)
(SETQ PNUM (IQUOTIENT PNUM GCF)) (* Reduce both numerator and denominator by the GCD)
(SETQ PDEN (IQUOTIENT PDEN GCF))
(RETURN (CONS (if NEGFLG
then (IMINUS PNUM)
else PNUM)
PDEN])
(RATIONALTOINTEGER
(LAMBDA (RAT) (* JonL " 4-Jan-85 15:59")
(FIXR (FQUOTIENT (fetch (RATIONAL NUMERATOR) of RAT)
(fetch (RATIONAL DENOMINATOR) of RAT)))))
)
[DECLARE: EVAL@COMPILE
(RECORD RATIONAL (NUMERATOR . DENOMINATOR)
(TYPE? (AND (LISTP DATUM)
(FIXP (CAR DATUM))
(FIXP (CDR DATUM))))
(CREATE (CREATERATIONAL NUMERATOR DENOMINATOR)))
]
(* OK)
(DECLARE: EVAL@COMPILE
(PUTPROPS MASK.1'S MACRO (OPENLAMBDA (POSITION SIZE)
(LSH (SUB1 (LSH 1 SIZE))
POSITION)))
(PUTPROPS MASK.0'S MACRO (OPENLAMBDA (POSITION SIZE)
(LOGNOT (MASK.1'S POSITION SIZE))))
(PUTPROPS BITTEST MACRO ((N MASK)
(NEQ 0 (LOGAND N MASK))))
(PUTPROPS BITSET MACRO (= . LOGOR))
(PUTPROPS BITCLEAR MACRO ((X MASK)
(LOGAND X (LOGNOT MASK))))
(PUTPROPS LOGNOT MACRO ((INTEGER)
(LOGXOR -1 INTEGER)))
)
(DEFINEQ
(LOGNOT
(LAMBDA (INTEGER) (* kbr: "12-Jul-86 17:05")
(LOGXOR -1 INTEGER)))
)
(* "BYTE hacking functions")
[DECLARE: EVAL@COMPILE
(TYPERECORD BYTESPEC (BYTESPEC.SIZE BYTESPEC.POSITION))
]
(DEFINEQ
(LOADBYTE
[LAMBDA (N POS SIZE) (* lmm "12-Apr-85 14:35")
(\MACRO.MX (LOADBYTE N POS SIZE])
(DEPOSITBYTE
[LAMBDA (N POS SIZE VAL) (* lmm "12-Apr-85 14:36")
(\MACRO.MX (DEPOSITBYTE N POS SIZE VAL])
)
(DECLARE: EVAL@COMPILE
(PUTPROPS LOADBYTE MACRO ((N POS SIZE)
(LOGAND (RSH N POS)
(MASK.1'S 0 SIZE))))
(PUTPROPS DEPOSITBYTE MACRO (OPENLAMBDA (N POS SIZE VAL)
(LOGOR (BITCLEAR N (MASK.1'S POS SIZE))
(LSH (LOGAND VAL (MASK.1'S 0 SIZE))
POS))))
)
(DEFINEQ
(IMODLESSP
[LAMBDA (X Y MODULUS) (* lmm "12-Apr-85 12:43")
(ILESSP (IMODDIFFERENCE Y X MODULUS)
(FOLDHI MODULUS 2])
(IMODPLUS
[LAMBDA (X Y MODULUS) (* lmm "12-Apr-85 12:47")
(* tune for more efficiency later)
(\MACRO.MX (IMODPLUS X Y MODULUS])
(IMODDIFFERENCE
[LAMBDA (X Y MODULUS) (* lmm "12-Apr-85 12:48")
(\MACRO.MX (IMODDIFFERENCE X Y MODULUS])
)
(DECLARE: EVAL@COMPILE
(PUTPROPS IMODPLUS MACRO ((X Y MODULUS)
(IMOD (IPLUS X Y)
MODULUS)))
(PUTPROPS IMODDIFFERENCE MACRO ((X Y MODULUS)
(IMOD (IDIFFERENCE X Y)
MODULUS)))
(PUTPROPS IMOD MACRO (L (PROG ((N (CONSTANTEXPRESSIONP (CADR L))))
(if (NULL N)
then
(RETURN (QUOTE IGNOREMACRO)))
(SETQ N (CAR N))
(RETURN (COND ((NOT (POWEROFTWOP N))
(QUOTE IGNOREMACRO))
(T (LIST (QUOTE LOGAND)
(CAR L)
(SUB1 N))))))))
)
(DEFINEQ
(ROT
[LAMBDA (X N FIELDSIZE) (* lmm "12-Apr-85 14:12")
(* Normalize N, the shift factor, into the half-open interval of 0 to FIELDSIZE and transform a negative N
(rotating rightwards) into a positive form.)
(LET* ((N (IMOD N FIELDSIZE))
(N.B (IDIFFERENCE FIELDSIZE N)))
(DEPOSITBYTE (LOADBYTE X N.B N)
N N.B X])
)
(DEFOPTIMIZER ROT ROT-INLINE (X N FIELDSIZE)
(COND
((AND (SETQ N (CONSTANTEXPRESSIONP N))
(SETQ FIELDSIZE (CONSTANTEXPRESSIONP FIELDSIZE))
(FIXP (CAR N))
(FIXP (CAR FIELDSIZE))) (* fieldsize and N are constants)
(BQUOTE (.ROT. , X , (IMOD (CAR N)
(CAR FIELDSIZE))
,
(CAR FIELDSIZE))))
(T (QUOTE IGNOREMACRO))))
(DECLARE: EVAL@COMPILE
(PUTPROPS .ROT. MACRO ((XFORM N FIELDSIZE)
((OPENLAMBDA (X)
(DEPOSITBYTE (LOADBYTE X (IDIFFERENCE FIELDSIZE N)
N)
N
(IDIFFERENCE FIELDSIZE N)
X))
XFORM)))
)
(* NOT OK YET)
(DECLARE: EVAL@COMPILE
(PUTPROPS LDB MACRO (X (\LDBEXPANDER X)))
(PUTPROPS DPB MACRO (X (\DPBEXPANDER X)))
(PUTPROPS BYTE MACRO
(X (PROG ((SIZE (LISPFORM.SIMPLIFY (CAR X)
T))
(POSITION (LISPFORM.SIMPLIFY (CADR X)
T)))
(RETURN (if (AND (FIXP POSITION)
(FIXP SIZE))
then
(KWOTE (create BYTESPEC BYTESPEC.SIZE ← SIZE BYTESPEC.POSITION ← POSITION
))
else
(BQUOTE (create BYTESPEC BYTESPEC.SIZE ← , SIZE BYTESPEC.POSITION ← ,
POSITION)))))))
(PUTPROPS BYTESIZE MACRO ((BYTESPEC)
(fetch BYTESPEC.SIZE of BYTESPEC)))
(PUTPROPS BYTEPOSITION MACRO ((BYTESPEC)
(fetch BYTESPEC.POSITION of BYTESPEC)))
)
(DEFINEQ
(LDB
(LAMBDA (BYTESPEC INTEGER) (* kbr: "12-Jul-86 17:10")
(LOADBYTE INTEGER (fetch (BYTESPEC BYTESPEC.POSITION) of BYTESPEC)
(fetch (BYTESPEC BYTESPEC.SIZE) of BYTESPEC))))
(DPB
(LAMBDA (NEWBYTE BYTESPEC INTEGER) (* kbr: "12-Jul-86 17:18")
(DEPOSITBYTE INTEGER (fetch (BYTESPEC BYTESPEC.POSITION) of BYTESPEC)
(fetch (BYTESPEC BYTESPEC.SIZE) of BYTESPEC)
NEWBYTE)))
)
(DEFINEQ
(\LDBEXPANDER
(LAMBDA (X) (* JonL "25-FEB-83 21:10")
(PROG ((BS (LISPFORM.SIMPLIFY (CAR X)
T))
(WORD (CADR X))
TEM N SIZE POSITION)
(RETURN (if (AND (SETQ TEM (CAR (EVALUABLE.CONSTANTP BS)))
(type? BYTESPEC TEM))
then (LIST (QUOTE LOADBYTE)
WORD
(KWOTE (BYTEPOSITION TEM))
(KWOTE (BYTESIZE TEM)))
else (SETQ N (LISPFORM.SIMPLIFY WORD T))
(if (AND (LISTP BS)
(EQ (CAR BS)
(QUOTE CONS))
(EQUAL (CADR BS)
(QUOTE (QUOTE BYTESPEC)))
(LISTP (SETQ TEM (CADDR BS)))
(EQ (CAR TEM)
(QUOTE LIST)))
then (* What a crappy thing to do in order to try to
de-compile the expanded form of
(BYTE <size> <position>))
(pop TEM)
(SETQ SIZE (pop TEM))
(SETQ POSITION (pop TEM))
(if (OR (EVALUABLE.CONSTANT.FIXP N)
(AND (ARGS.COMMUTABLEP N SIZE)
(ARGS.COMMUTABLEP N POSITION)
(ARGS.COMMUTABLEP SIZE POSITION)))
then (BQUOTE (LOADBYTE , WORD , POSITION , SIZE))
else (BQUOTE ((LAMBDA (\Bytesize \Byteposition)
(DECLARE (LOCALVARS \Bytesize \Byteposition))
(LOADBYTE , WORD \Byteposition \Bytesize))
, SIZE , POSITION)))
elseif (AND (LITATOM BS)
(OR (EVALUABLE.CONSTANT.FIXP N)
(ARGS.COMMUTABLEP BS N)))
then (BQUOTE (LOADBYTE , WORD (BYTEPOSITION , BS)
(BYTESIZE , BS)))
else (BQUOTE ((LAMBDA (\PositionSize)
(DECLARE (LOCALVARS \PositionSize))
(LOADBYTE , WORD (BYTEPOSITION \PositionSize)
(BYTESIZE \PositionSize)))
, BS))))))))
(\DPBEXPANDER
(LAMBDA (X) (* JonL "25-FEB-83 20:49")
(PROG ((NEWBYTE (CAR X))
(BS (LISPFORM.SIMPLIFY (CADR X)
T))
(WORD (LISPFORM.SIMPLIFY (CADDR X)
T))
SIZE POS X Y BagBiterP N BYTEFORM DEPOSITFORM CBSP TEM)
(if (AND (LISTP BS)
(EQ (CAR BS)
(QUOTE CONS))
(EQUAL (CADR BS)
(QUOTE (QUOTE BYTESPEC)))
(LISTP (SETQ TEM (CADDR BS)))
(EQ (CAR TEM)
(QUOTE LIST)))
then (* What a crappy thing to do in order to try to
de-compile the expanded form of
(BYTE <size> <position>))
(pop TEM)
(SETQ SIZE (pop TEM))
(SETQ POS (pop TEM))
(SETQ CBSP (AND (EVALUABLE.CONSTANTP SIZE)
(EVALUABLE.CONSTANTP POS)))
elseif (AND (SETQ TEM (CAR (EVALUABLE.CONSTANTP BS)))
(type? BYTESPEC TEM))
then (SETQ SIZE (KWOTE (BYTESIZE TEM)))
(SETQ POS (KWOTE (BYTEPOSITION TEM)))
(SETQ CBSP T))
(SETQ N (LISPFORM.SIMPLIFY NEWBYTE T))
(SETQ BagBiterP (OR (NOT (ARGS.COMMUTABLEP N WORD))
(AND (NOT CBSP)
(NOT (ARGS.COMMUTABLEP N BS)))))
(SETQ BYTEFORM (if BagBiterP
then (QUOTE \NewByte)
else NEWBYTE))
(SETQ DEPOSITFORM (if (AND SIZE POS)
then (* the SIZE and POSITION specifiers are somehow
extractable.)
(if (OR CBSP (AND (ARGS.COMMUTABLEP SIZE POS)
(ARGS.COMMUTABLEP WORD BS)))
then (* Case with a detected constant for bytespecifier)
(BQUOTE (DEPOSITBYTE , WORD , POS , SIZE , BYTEFORM))
else (BQUOTE ((LAMBDA (\Bytesize \Byteposition)
(DECLARE (LOCALVARS \Bytesize \Byteposition))
(DEPOSITBYTE , WORD \Byteposition \Bytesize ,
BYTEFORM))
, SIZE , POS)))
else (if (AND (LITATOM BS)
(ARGS.COMMUTABLEP WORD BS))
then (BQUOTE (DEPOSITBYTE , WORD (BYTEPOSITION , BS)
(BYTESIZE , BS)
, BYTEFORM))
else (SETQ BagBiterP T)
(BQUOTE ((LAMBDA (\ByteSpec)
(DECLARE (LOCALVARS \ByteSpec))
(DEPOSITBYTE , WORD (BYTEPOSITION \ByteSpec)
(BYTESIZE \ByteSpec)
\NewByte))
, BS)))))
(RETURN (if BagBiterP
then (BQUOTE ((LAMBDA (\NewByte)
(DECLARE (LOCALVARS \NewByte))
, DEPOSITFORM)
, NEWBYTE))
else DEPOSITFORM)))))
)
(* "Primitive Functions for extracting fields as integers")
(DECLARE: EVAL@COMPILE
(PUTPROPS \XLOADBYTEWORD DMACRO ((N POS SIZE)
(* N is constrained to be a SMALLP)
(LOGAND (\XLRSHWORD N POS)
(MASK.1'S 0 (IMIN BITSPERWORD SIZE)))))
)
(DEFINEQ
(\PUTBASEBITS
[LAMBDA (ADDR POSITION SIZE VAL) (* lmm "12-Apr-85 15:18")
(if (GREATERP POSITION BITSPERWORD)
then (\PUTBASEBITS (\ADDBASE ADDR (FOLDLO POSITION BITSPERWORD))
(IMOD POSITION BITSPERWORD)
SIZE VAL)
elseif (GREATERP SIZE (DIFFERENCE BITSPERWORD POSITION))
then (* more than one word)
[\PUTBASEBITS ADDR POSITION (DIFFERENCE BITSPERWORD POSITION)
(RSH VAL (SETQ SIZE (DIFFERENCE SIZE (DIFFERENCE BITSPERWORD POSITION]
(\PUTBASEBITS (\ADDBASE ADDR 1)
0 SIZE VAL)
else (* a single word)
(\PUTBASE ADDR 0 (DEPOSITBYTE (\GETBASE ADDR 0)
(DIFFERENCE (SUB1 BITSPERWORD)
POSITION)
SIZE VAL])
)
(* "Primitive functions, especially needed for CommonLisp array package.")
(DECLARE: DONTCOPY
(DECLARE: EVAL@COMPILE
(PUTPROPS .HIHALFWORDLO. MACRO ((X)
(LRSH X BITSPERHALFWORD)))
(PUTPROPS .HIHALFWORDHI. MACRO ((X)
(LOGAND X (CONSTANT (LSH MASKHALFWORD1'S BITSPERHALFWORD)))))
(PUTPROPS .LOHALFWORDLO. MACRO ((X)
(LOGAND X MASKHALFWORD1'S)))
(PUTPROPS .LOHALFWORDHI. MACRO ((X)
(LLSH (LOGAND X MASKHALFWORD1'S)
BITSPERHALFWORD)))
)
(* FOLLOWING DEFINITIONS EXPORTED)
(DECLARE: EVAL@COMPILE
(PUTPROPS \GETBASENIBBLE DMACRO (OPENLAMBDA (BASE OFFST)
((LAMBDA (\Byte)
(DECLARE (LOCALVARS \Byte))
(if (ODDP OFFST)
then
(LOGAND \Byte (CONSTANT (MASK.1'S 0 BITSPERNIBBLE)
))
else
(LRSH \Byte BITSPERNIBBLE)))
(\GETBASEBYTE BASE (FOLDLO OFFST NIBBLESPERBYTE)))))
(PUTPROPS \PUTBASENIBBLE DMACRO
(OPENLAMBDA (BASE OFFST VAL)
((LAMBDA (\ByteNo)
(DECLARE (LOCALVARS \ByteNo))
((LAMBDA (\Byte)
(DECLARE (LOCALVARS \Byte))
(\PUTBASEBYTE BASE \ByteNo
(if (ODDP OFFST)
then
(LOGOR (LOGAND \Byte (CONSTANT (MASK.1'S BITSPERNIBBLE
BITSPERNIBBLE)))
VAL)
else
(LOGOR (LOGAND \Byte (CONSTANT (MASK.1'S 0 BITSPERNIBBLE)))
(LLSH VAL BITSPERNIBBLE)))))
(\GETBASEBYTE BASE \ByteNo)))
(FOLDLO OFFST NIBBLESPERBYTE))))
(PUTPROPS \GETBASEBIT DMACRO (OPENLAMBDA (BASE OFFST)
((LAMBDA (\ByteNo \BitMask)
(DECLARE (LOCALVARS \ByteNo \BitMask))
(if (EQ 0 (LOGAND \BitMask (\GETBASEBYTE BASE \ByteNo)))
then 0 else 1))
(FOLDLO OFFST BITSPERBYTE)
(MASK.1'S (IDIFFERENCE (CONSTANT (SUB1 BITSPERBYTE))
(IMOD OFFST BITSPERBYTE))
1))))
(PUTPROPS \PUTBASEBIT DMACRO (OPENLAMBDA (BASE OFFST VAL)
((LAMBDA (\ByteNo \BitMask \Byte)
(DECLARE (LOCALVARS \ByteNo \BitMask \Byte))
(SETQ \Byte (\GETBASEBYTE BASE \ByteNo))
(if (if (EQ 0 (LOGAND \BitMask \Byte))
then
(NOT (EQ 0 VAL))
else
(EQ 0 VAL))
then
(\PUTBASEBYTE BASE \ByteNo (LOGXOR \BitMask \Byte)))
VAL)
(FOLDLO OFFST BITSPERBYTE)
(MASK.1'S (IDIFFERENCE (CONSTANT (SUB1 BITSPERBYTE))
(IMOD OFFST BITSPERBYTE))
1))))
)
(* END EXPORTED DEFINITIONS)
)
(DEFINEQ
(\GETBASENIBBLE
(LAMBDA (BASE OFFST) (* JonL "16-FEB-83 19:45")
(\MACRO.MX (\GETBASENIBBLE BASE OFFST))))
(\PUTBASENIBBLE
(LAMBDA (BASE OFFST VAL) (* JonL "16-FEB-83 19:52")
(\MACRO.MX (\PUTBASENIBBLE BASE OFFST VAL))))
(\GETBASEBIT
(LAMBDA (BASE OFFST) (* JonL "27-JAN-83 20:34")
(\MACRO.MX (\GETBASEBIT BASE OFFST))))
(\PUTBASEBIT
(LAMBDA (BASE OFFST VAL) (* JonL " 7-FEB-83 21:01")
(\MACRO.MX (\PUTBASEBIT BASE OFFST VAL))))
)
(* "Beginning of rewrite of some LLARITH things, modularly using the macros of
this file")
(DECLARE: DONTCOPY
(* FOLLOWING DEFINITIONS EXPORTED)
(DECLARE: EVAL@COMPILE
(RPAQQ MASK0WORD1'S 32767)
(RPAQQ MASK1WORD0'S 32768)
(RPAQQ MASKWORD1'S 65535)
(RPAQQ MASKHALFWORD1'S 255)
(RPAQQ BITSPERHALFWORD 8)
(CONSTANTS MASK0WORD1'S MASK1WORD0'S MASKWORD1'S MASKHALFWORD1'S BITSPERHALFWORD)
)
(DECLARE: EVAL@COMPILE
(PUTPROPS EQZEROP MACRO ((X)
(EQ 0 X)))
)
(DECLARE: EVAL@COMPILE
(PUTPROPS \MOVETOBOX DMACRO (OPENLAMBDA (N D)
(SELECTC (NTYPX N)
(\SMALLP (replace (FIXP HINUM)
of D with 0)
(replace (FIXP LONUM)
of D with N))
(\FIXP (replace (FIXP HINUM)
of D with (fetch (FIXP HINUM)
of N))
(replace (FIXP LONUM)
of D with (fetch (FIXP LONUM)
of N)))
(\ILLEGAL.ARG N))))
(PUTPROPS .XUNBOX. MACRO ((X HX LX)
(until (SETQ LX (SELECTC (NTYPX X)
(\SMALLP (COND ((IGEQ X 0)
(SETQ HX 0)
X)
(T (SETQ HX MASKWORD1'S)
(\LOLOC X))))
(\FIXP (SETQ HX (fetch (FIXP HINUM)
of X))
(fetch (FIXP LONUM)
of X))
NIL))
do
(SETQ X (LISPERROR "ILLEGAL ARG" X T)))))
(PUTPROPS .XLLSH. MACRO ((HI LO N)
(if (IGEQ N BITSPERWORD)
then
(* Jump 16 bits in a single bound!)
(SETQ HI LO)
(SETQ LO 0)
(SETQ N (IDIFFERENCE N BITSPERWORD)))
(if (IGEQ N BITSPERHALFWORD)
then
(* Jump 8 bits in a single bound!)
(SETQ HI (LOGOR (.LOHALFWORDHI. HI)
(.HIHALFWORDLO. LO)))
(SETQ LO (.LOHALFWORDHI. LO))
(SETQ N (IDIFFERENCE N BITSPERHALFWORD)))
(if (IGEQ N 4)
then
(* Jump 4 bits in a single bound!)
(SETQ HI (LOGOR (LRSH LO (CONSTANT (IDIFFERENCE BITSPERWORD 4)))
(LLSH (LOGAND HI (CONSTANT (MASK.1'S 0 (IDIFFERENCE
BITSPERWORD 4)))
)
4)))
(SETQ LO (LLSH (LOGAND LO (CONSTANT (MASK.1'S 0 (IDIFFERENCE BITSPERWORD
4))))
4))
(SETQ N (IDIFFERENCE N 4)))
(* MASK0WORD1'S should be same as (SUB1 (LSH 1 (SUB1 BITSPERWORD))))
(FRPTQ N (SETQ HI (LLSH (LOGAND HI MASK0WORD1'S)
1))
(SETQ LO (LLSH (if (IGEQ LO MASK1WORD0'S)
then
(add HI 1)
(LOGAND LO MASK0WORD1'S)
else LO)
1)))))
(PUTPROPS .XLLSH1. MACRO ((HI LO)
(SETQ HI (LLSH (LOGAND HI MASK0WORD1'S)
1))
(SETQ LO (LSH (COND ((IGEQ LO MASK1WORD0'S)
(SETQ HI (LOGOR HI 1))
(LOGAND LO MASK0WORD1'S))
(T LO))
1))))
(PUTPROPS .XLRSH. MACRO ((HI LO N)
(if (IGEQ N BITSPERWORD)
then
(* Jump 10 bits in a single bound!)
(SETQ LO HI)
(SETQ HI 0)
(SETQ N (IDIFFERENCE N BITSPERWORD)))
(if (IGEQ N BITSPERHALFWORD)
then
(* Jump 8 bits in a single bound!)
(SETQ LO (LOGOR (.HIHALFWORDLO. LO)
(.LOHALFWORDHI. HI)))
(SETQ HI (.HIHALFWORDLO. HI))
(SETQ N (IDIFFERENCE N BITSPERHALFWORD)))
(if (IGEQ N 4)
then
(* Jump 4 bits in a single bound!)
(SETQ LO (LOGOR (LLSH (LOGAND HI (CONSTANT (MASK.1'S 0 4)))
(CONSTANT (IDIFFERENCE BITSPERWORD 4)))
(LRSH LO 4)))
(SETQ HI (LRSH HI 4))
(SETQ N (IDIFFERENCE N 4)))
(* MASK1WORD0'S should be same as \SIGNBIT)
(FRPTQ N (SETQ LO (if (ODDP HI)
then
(LOGOR (LRSH LO 1)
MASK1WORD0'S)
else
(LRSH LO 1)))
(SETQ HI (LRSH HI 1)))))
(PUTPROPS .ADD.2WORD.INTEGERS. MACRO ((HX LX HY LY)
(* Ignores carry out of high-order word)
(SETQ HX (.SUMSMALLMOD. HX HY))
(SETQ LX (.SUMSMALLMOD. LX LY (SETQ HX
(if (EQ HX
MAX.SMALL.INTEGER)
then 0 else
(ADD1 HX)))))))
(PUTPROPS .SUB.2WORD.INTEGERS. MACRO ((HX LX HY LY)
(* Ignores carry out of high-order word)
(SETQ HX (.DIFFERENCESMALLMOD. HX HY))
(SETQ LX (.DIFFERENCESMALLMOD. LX LY
(SETQ HX (if (EQ HX 0)
then MAX.SMALL.INTEGER else
(SUB1 HX)))))))
(PUTPROPS .32BITMUL. MACRO ((HR LR X Y)
(PROG (HX LX HY LY)
(if (ILESSP X Y)
then
(swap X Y))
(* Y is the lesser of the two now)
(.XUNBOX. X HX LX)
(.XUNBOX. Y HY LY)
LP
(if (ODDP LY)
then
(.ADD.2WORD.INTEGERS. HR LR HX LX))
(if (EQ HY 0)
then
(SETQ LY (LRSH LY 1))
(if (EQ LY 0)
then
(RETURN))
else
(.LRSH1. HY LY))
(* Trim off highest bits, so that left-shifting doesn't generate
FIXPs)
(SETQ HX (LOGAND HX MASK0WORD1'S))
(.LLSH1. HX LX)
(GO LP))))
)
(DECLARE: EVAL@COMPILE
(PUTPROPS .SUMSMALLMOD. MACRO ((X Y OVERFLOWFORM)
((LAMBDA (\SumSmallModVar)
(DECLARE (LOCALVARS \SumSmallModVar))
(IF (ILEQ X \SumSmallModVar)
THEN
(IPLUS X Y)
ELSE OVERFLOWFORM (IDIFFERENCE X (ADD1 \SumSmallModVar))))
(IDIFFERENCE MAX.SMALL.INTEGER Y))))
(PUTPROPS .DIFFERENCESMALLMOD. MACRO ((X Y BORROWFORM)
(IF (NOT (IGREATERP Y X))
THEN
(IDIFFERENCE X Y)
ELSE BORROWFORM (ADD1 (IDIFFERENCE MAX.SMALL.INTEGER
(IDIFFERENCE Y X))))))
)
(* END EXPORTED DEFINITIONS)
(DECLARE: EVAL@COMPILE
(PUTPROPS .ADD.2WORD.INTEGERS. MACRO ((HX LX HY LY)
(* Ignores carry out of high-order word)
(SETQ HX (.SUMSMALLMOD. HX HY))
(SETQ LX (.SUMSMALLMOD. LX LY (SETQ HX
(if (EQ HX
MAX.SMALL.INTEGER)
then 0 else
(ADD1 HX)))))))
(PUTPROPS .SUB.2WORD.INTEGERS. MACRO ((HX LX HY LY)
(* Ignores carry out of high-order word)
(SETQ HX (.DIFFERENCESMALLMOD. HX HY))
(SETQ LX (.DIFFERENCESMALLMOD. LX LY
(SETQ HX (if (EQ HX 0)
then MAX.SMALL.INTEGER else
(SUB1 HX)))))))
(PUTPROPS .32BITMUL. MACRO ((HR LR X Y)
(PROG (HX LX HY LY)
(if (ILESSP X Y)
then
(swap X Y))
(* Y is the lesser of the two now)
(.XUNBOX. X HX LX)
(.XUNBOX. Y HY LY)
LP
(if (ODDP LY)
then
(.ADD.2WORD.INTEGERS. HR LR HX LX))
(if (EQ HY 0)
then
(SETQ LY (LRSH LY 1))
(if (EQ LY 0)
then
(RETURN))
else
(.LRSH1. HY LY))
(* Trim off highest bits, so that left-shifting doesn't generate
FIXPs)
(SETQ HX (LOGAND HX MASK0WORD1'S))
(.LLSH1. HX LX)
(GO LP))))
)
)
(PUTPROPS ADDARITH COPYRIGHT ("Xerox Corporation" 1982 1983 1984 1985 1986))
(DECLARE: DONTCOPY
(FILEMAP (NIL (3203 8223 (\RTIMES2 3213 . 4759) (\RATIONALIZE 4761 . 5096) (\RPLUS2 5098 . 6464) (
\RMINUS 6466 . 6803) (CREATERATIONAL 6805 . 7975) (RATIONALTOINTEGER 7977 . 8221)) (9124 9269 (LOGNOT
9134 . 9267)) (9394 9710 (LOADBYTE 9404 . 9550) (DEPOSITBYTE 9552 . 9708)) (10142 10743 (IMODLESSP
10152 . 10331) (IMODPLUS 10333 . 10580) (IMODDIFFERENCE 10582 . 10741)) (11640 12071 (ROT 11650 .
12069)) (14176 14720 (LDB 14186 . 14440) (DPB 14442 . 14718)) (14721 19231 (\LDBEXPANDER 14731 . 16558
) (\DPBEXPANDER 16560 . 19229)) (19582 20509 (\PUTBASEBITS 19592 . 20507)) (24680 25338 (
\GETBASENIBBLE 24690 . 24851) (\PUTBASENIBBLE 24853 . 25018) (\GETBASEBIT 25020 . 25175) (\PUTBASEBIT
25177 . 25336)))))
STOP