NAME

       createablunaryexpr - creates an unary operator expression.

SYNOPSYS

       #include "abl101.h"
       chain_list ∗createablunaryexpr( Oper, Expr )
         long        Oper;
         chain_list ∗Expr;

PARAMETERS

       Oper                The unary operator number.

       Expr                Expression.

DESCRIPTION

       createablunaryexpr  creates  the  unary  operator  expression  Operator  Expr.  createablbinexpr combines
       eventualy the operator of Expr with Operator.  The expression pointer Expr MUSTN'T be used after the call
       to this function.

RETURN VALUE

       createablunaryexpr returns a pointer to the new operator expression.

ERRORS

       "ablcreate: bad operator xx !",
              Operator must be defined and must be a unary operator.

EXAMPLE

       #include "abl101.h"
          chain_list ∗ExprA;
          chain_list ∗ExprB;
          chain_list ∗ExprAorB;
          chain_list ∗ExprAnorB;
          ExprA = createablatom( "a" );
          ExprB = createablatom( "b" );
          ExprAorB  = createablbinexpr( ABL_OR, ExprA, ExprB );
          ExprAnorB = createablunaryexpr( ABL_NOT, ExprAorB );

SEE ALSO

       abl(1)       createablatom(3),      createabloper(3),      createablnotexpr(3),      createablbinexpr(3),
       createablxorbinexpr(3), addablhexpr(3), addablqexpr(3).