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# ifndef ERC_H
# define ERC_H
# include "eref.h"
typedef struct _elem { eref val; struct _elem *next; } ercElem;
typedef ercElem *ercList;
typedef struct { ercList vals; int size; } ercInfo;
typedef ercInfo *erc;
typedef ercList *ercIter;
# include "erc.lh"
# define erc_size(c) ((c)->size)
# define erc_choose(c) ((c->vals)->val)
# define erc_initMod() \
do { bool_initMod(); employee_initMod();\
eref_initMod(); } while (FALSE)
# define erc_iterFinal(it) (free(it))
# define erc_iterReturn(it, result) \
do { erc_iterFinal(it); return result; } while (FALSE)
# define for_ercElems(er, it, c)\
for (er = erc_yield (it = erc_iterStart (c)); \
!eref_equal (er, erefNIL); \
er = erc_yield (it))
# endif
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