NAME

       substablexpr - substitutes a given atom by an expression.

SYNOPSYS

       #include "abl101.h"
       chain_list ∗substablexpr( Expr1, Name, Expr2 )
         chain_list ∗Expr1;
         char       ∗Name;
         chain_list ∗Expr2;

PARAMETERS

       Expr1               First expression.

       Name                Atom name.

       Expr                Second expression.

DESCRIPTION

       substablexpr  substitutes Atom in Expr1 by Expr2.  The expression pointer Expr1 MUSTN'T be
       used after the call to this function.

RETURN VALUE

       substablexpr returns the modified expression.

EXAMPLE

       #include "abl101.h"
         chain_list ∗Expr1;
         chain_list ∗Expr2;
         Expr1 = createablbinexpr( ABL_OR,
                                   createablatom( "a" ),
                                   createablatom( "b" ) );
         Expr2 = createablbinexpr( ABL_AND,
                                   createablatom( "c" ),
                                   createablatom( "d" ) );
         Expr1 = substablexpr( Expr1, "a", Expr2 );
         /* displays ((c and d) or b) */
         viewablexpr( Expr1, ABL_VIEW_VHDL );

SEE ALSO

       abl(1), substdupablexpr(3).