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AST(3)			    Library Functions Manual			  AST(3)

NAME
     expr - c-like expression library

SYNOPSIS
     #include <graphviz/expr.h>

     Expr_t*	      exopen(Exdisc_t*);
     Excc_t*	      exccopen(Expr_t*, Exccdisc_t*);
     int	      exccclose(Excc_t*);
     void	      exclose(Expr_t*, int);
     char*	      excontext(Expr_t*, char*, int);
     void	      exerror(const char*, ...);
     Extype_t	      exeval(Expr_t*, Exnode_t*, void*);
     Exnode_t*	      exexpr(Expr_t*, const char*, Exid_t*, int);

     Exnode_t*	      excast(Expr_t*, Exnode_t*, int, Exnode_t*, int);
     Exnode_t*	      exnewnode(Expr_t*, int, int, int, Exnode_t*, Exnode_t*);
     void	      exfreenode(Expr_t*, Exnode_t*);
     int	      expush(Expr_t*, const char*, int, const char*, FILE*);
     int	      expop(Expr_t*);
     int	      excomp(Expr_t*, const char*, int, const char*, FILE*);
     int	      extoken(Expr_t*);
     char*	      extype(long int);
     Extype_t	      exzero(long int);

DESCRIPTION
     exopen()  is  the	first  function  called.  exclose() is the last function
     called.  exccopen() is the called if code generation will be  used.   excc-
     close() releases the state information allocated in exccopen().

SEE ALSO
									  AST(3)

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