ast *newNode (long, ast *, ast *);
ast *copyAst (ast *);
ast *removeIncDecOps (ast *);
+ast *removePreIncDecOps (ast *);
+ast *removePostIncDecOps (ast *);
value *sizeofOp (sym_link *);
value *evalStmnt (ast *);
ast *createFunction (symbol *, ast *);