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#ifndef fooidxsethfoo
#define fooidxsethfoo
#include <inttypes.h>
#define IDXSET_INVALID ((uint32_t) -1)
struct idxset;
struct idxset* idxset_new(unsigned (*hash_func) (void *p), int (*compare_func) (void*a, void*b));
void idxset_free(struct idxset *s, void (*free_func) (void *p, void *userdata), void *userdata);
int idxset_put(struct idxset*s, void *p, uint32_t *index);
void* idxset_get_by_index(struct idxset*s, uint32_t index);
void* idxset_get_by_data(struct idxset*s, void *p, uint32_t *index);
void* idxset_remove_by_index(struct idxset*s, uint32_t index);
void* idxset_remove_by_data(struct idxset*s, void *p, uint32_t *index);
void* idxset_rrobin(struct idxset *s, uint32_t *index);
int idxset_foreach(struct idxset*s, int (*func)(void *p, uint32_t index, int *del, void*userdata), void *userdata);
unsigned idxset_ncontents(struct idxset*s);
int idxset_isempty(struct idxset *s);
#endif
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