Table of Contents
abl - Prefixed representation for boolean functions
This software belongs to the ALLIANCE CAD system from the CAO-VLSI team at
ASIM/LIP6/UPMC laboratory.
LIP6/ASIM
University P. et M. Curie
4, place Jussieu
75252 PARIS Cedex 05
FRANCE
Fax : {33/0} 1.44.27.62.86
E-mail support : alliance-support@asim.lip6.fr
libablmmm.a is a library that enables to represent a boolean function in a
LISP-like form. An ABL is a prefixed internal representation for a boolean
function having standard operators as OR,NOR,NAND,XOR,NOT and AND. An ABL
is only made up of doublets. A doublet is composed of two fields wich are
accessible by the functionnal #define CAR and CDR. A doublet is implemented
with a MBK chain_list.
Expression is the generic term for a boolean function represented by an
ABL. An expression can be an atomic expression or an operator expression.
The function f = a is represented by an atomic expression whereas f = (or
a b) is represented by an operator expression. An atomic expression is
made up of a single doublet having the NEXT pointer equal to NULL and DATA
pointer equal to the identifier pointer. A constant atomic expression is
an atomic expression having the string '0' or '1' as identifier.
An operator expression is more complicated than an atomic expression. It's
a list of items, the first item is the head operator of the expression and
the following items are the arguments of the expression. It's possible to
go trough the arguments by calling the functionnal #define CDR. Then each
argument is accessible by the functionnal #define CAR. An argument can be
recursively an atomic or an operator expression. The arity of an operator
expression is the number of arguments of the first level.
Functions are divided into two groups, the low level functions are written
with #define and are used to manage the ABL internal form, the high level
functions are used to manage the boolean expressions. All functions are
defined in the file prefbib.c (#define in logmmm.h").
Functionnal #define
- ATOM
- - checks the kind of an expression (atomic or operator
expression).
- CAR
- - returns the DATA pointer of a doublet.
- CADR
- - returns the DATA pointer of the NEXT pointer of a
doublet.
- CDR
- - returns the NEXT pointer of a doublet.
- OPER
- - returns the operator number of an operator expression.
- VALUE_ATOM
- - returns the associated char * of an atomic expression.
Functions and procedures
- addHExpr
- - adds a new arguments at the head of an operator
expression.
- addQExpr
- - adds a new arguments at the queue of an operator
expression.
- anyExpr
- - returns the value of a logical OR applied on the
results of the application of a function on the arguments
of an operator expression.
- changeOperExpr
- - changes the operator of the head of an expression.
- charToOper
- - converts an operator string into an operator number.
- copyExpr
- - copies an expression.
- createAtom
- - creates an atomic expression.
- createBinExpr
- - creates a binary operator expression with an eventual
merging of the operator.
- createExpr
- - creates the head of an operator expression.
- deleteNumExpr
- - removes the i-th argument in an operator expression.
- devXor2Expr
- - converts XOR 2 to OR-AND.
- devXorExpr
- - removes XOR in an expression.
- displayExpr
- - displays an expression in a prefixed notation.
- displayInfExpr
- - displays an expression in infixed notation.
- equalExpr
- - checks that two expressions are strictly equal.
- equalVarExpr
- - checks that two expressions are syntactically equal.
- everyExpr
- - returns the value of a logical AND applied on the
results of the application of a function on the arguments
of an operator expression.
- exprToChar
- - converts an expression into a string.
- charToExpr
- - converts a string into an expression.
- flatArityExpr
- - flattens the operators of an expression.
- flatPolarityExpr
- - translates the inverters of an expression to the
level of atomic expressions.
- freeExpr
- - frees an expression.
- identExpr
- - gives an identifier from an operator expression.
- lengthExpr
- - returns the number of arguments in an expression.
- mapCarExpr
- - creates a new expression by applying a function to
all arguments of an operator expression.
- mapExpr
- - applies a procedure to all the arguments of an operator
expression.
- maxExpr
- - returns the highest argument of an operator expression.
- minExpr
- - returns the lowest argument of an operator expression.
- normExpr
- - normalizes an expression.
- notExpr
- - complements an expression and eventually does a simplification.
- numberAtomExpr
- - returns the number of atoms in an expression.
- numberOccExpr
- - returns the number of time an atom appears in an
expression.
- numberOperBinExpr
- - returns the number of equivalent binary operators in
an expression.
- operToChar
- - converts an operator number into an operator string.
- profExpr
- - returns the depth of an expression.
- profAOExpr
- - returns the depth of an expression without taking
the inverters into account.
- searchExpr
- - searches for a specific atom in an expression.
- searchNumExpr
- - fetches the i-th argument in an operator expression.
- searchOperExpr
- - searches for an operator in an expression.
- simplif10Expr
- - makes simplifications on an expression including
constant atomic expressions.
- simplifNotExpr
- - makes simplifications on an expression including
inverters.
- sortExpr
- - sorts an expression.
- substExpr
- - copies an expression by substituting a given atom by
an expression.
- substPhyExpr
- - substitutes an atomic expression by an expression
within an expression.
supportChain_listExpr
- returns the support of an expression in a
chain_list.
supportPtype_listExpr
- returns the support of an expression in a
ptype_list.
- wPMExpr
- - returns 1 if the pattern matching is possible
between two expressions.
log(1)
, mbk(1)
, addHExpr(3)
, addQExpr(3)
, anyExpr(3)
, changeOperExpr(3)
,
charToExpr(3)
, charToOper(3)
, copyExpr(3)
, createAtom(3)
, createBinExpr(3)
,
createExpr(3)
, deleteNumExpr(3)
, devXor2Expr(3)
, devXorExpr(3)
,
displayExpr(3)
, displayInfExpr(3)
, equalExpr(3)
, equalVarExpr(3)
, everyExpr(3)
,
exprToChar(3)
, flatArityExpr(3)
, flatPolarityExpr(3)
, freeExpr(3)
,
identExpr(3)
, lengthExpr(3)
, mapCarExpr(3)
, mapExpr(3)
, maxExpr(3)
,
minExpr(3)
, notExpr(3)
, normExpr(3)
, numberAtomExpr(3)
, numberOccExpr(3)
,
numberOperBinExpr(3)
, operToChar(3)
, profExpr(3)
, profAOExpr(3)
,
searchExpr(3)
, searchNumExpr(3)
, searchOperExpr(3)
, simplif10Expr(3)
, simplifNotExpr(3)
,
sortExpr(3)
, substExpr(3)
, substPhyExpr(3)
, supportChain_listExpr(3)
,
supportPtype_listExpr(3)
. PMExpr(3)
.
This tool is under development at the ASIM/LIP6/UPMC laboratory, cao-vlsi
research team.
We need your feedbak to improve documentation and tools.
If you find bugs, please fill-in the form at
http://asim.lip6.fr/alliance/support/bug-report/
Thanks for doing this.
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, last updated on 26 May 2000.