hashset.h

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/* -*- Mode: C; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
 *     Copyright 2012 Couchbase, Inc.
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 *  Modified in 2022 by Edward A. Lee to conform to documentation standards.
 *  Also, changed so that hashset_create() takes an initial capacity argument.
 */
 
#ifndef HASHSET_H
#define HASHSET_H 1
 
#include <stdlib.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
struct hashset_st {
  size_t nbits;
  size_t mask;
 
  size_t capacity;
  void** items;
  size_t nitems;
  size_t n_deleted_items;
};
 
typedef struct hashset_st* hashset_t;
 
hashset_t hashset_create(unsigned short nbits);
 
void hashset_destroy(hashset_t set);
 
size_t hashset_num_items(hashset_t set);
 
int hashset_add(hashset_t set, void* item);
 
int hashset_remove(hashset_t set, void* item);
 
int hashset_is_member(hashset_t set, void* item);
 
#ifdef __cplusplus
}
#endif
 
#endif