expr(3) centos man page | unix.com

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		excc(Excc_t*, const char*, Exid_t*, int);
       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*, Sfio_t*);
       int		expop(Expr_t*);
       int		excomp(Expr_t*, const char*, int, const char*, Sfio_t*);
       int		exrewind(Expr_t*);
       void		exstatement(Expr_t*);
       int		extoken(Expr_t*);
       char*		extype(int);
       Extype_t 	exzero(int);

DESCRIPTION
       exopen()  is  the first function called.  exclose() is the last function called.  exccopen() is the called if code generation will be used.
       exccclose() releases the state information allocated in exccopen().  exstatement() saves statement start information.  exrewind()  restores
       statement start information saved by exstatement().

SEE ALSO
																	    AST(3)