111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/**
|
|
* Copyright (c) 2019 Leonardo Vencovsky
|
|
*
|
|
* This file is part of the C Macro Collections Library.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all
|
|
* copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
/**
|
|
* hashtable.h
|
|
*
|
|
* Creation Date: 17/03/2020
|
|
*
|
|
* Authors:
|
|
* Leonardo Vencovsky (https://github.com/LeoVen)
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* Things commonly used by hashtable-based collections.
|
|
*/
|
|
|
|
#ifndef CMC_COR_HASHTABLE_H
|
|
#define CMC_COR_HASHTABLE_H
|
|
|
|
#include "core.h"
|
|
|
|
/**
|
|
* CMC_ENTRY_DELETED
|
|
*
|
|
* Defines a pointer to an entry that has been deleted
|
|
*/
|
|
#define CMC_ENTRY_DELETED ((void *)1)
|
|
|
|
/**
|
|
* enum cmc_entry_state
|
|
*
|
|
* Defines the three possible states for a node on a flat hashtable.
|
|
*/
|
|
enum cmc_entry_state
|
|
{
|
|
CMC_ES_DELETED = -1,
|
|
CMC_ES_EMPTY = 0,
|
|
CMC_ES_FILLED = 1
|
|
};
|
|
|
|
/**
|
|
* static const size_t cmc_hashtable_primes[59]
|
|
*
|
|
* Prime numbers used to define a capacity for the hashtables for better
|
|
* hashing.
|
|
*/
|
|
// clang-format off
|
|
static const size_t cmc_hashtable_primes[] = {
|
|
/* < 1e3 */
|
|
53, 97, 191, 383, 769,
|
|
/* < 1e4 */
|
|
1531, 3067, 6143,
|
|
/* < 1e5 */
|
|
12289, 24571, 49157, 98299,
|
|
/* < 1e6 */
|
|
196613, 393209, 786431,
|
|
/* < 1e7 */
|
|
1572869, 3145721, 6291449,
|
|
/* < 1e8 */
|
|
12582917, 25165813, 50331653,
|
|
/* < 1e9 */
|
|
100663291, 201326611, 402653189, 805306357,
|
|
/* < 1e10 */
|
|
1610612741, 3221225473, 6442450939,
|
|
/* < 1e11 */
|
|
12884901893, 25769803799, 51539607551,
|
|
/* < 1e12 */
|
|
103079215111, 206158430209, 412316860441, 824633720831,
|
|
/* < 1e13 */
|
|
1649267441651, 3298534883309, 6597069766657,
|
|
/* < 1e14 */
|
|
13194139533299, 26388279066623, 52776558133303,
|
|
/* < 1e15 */
|
|
105553116266489, 211106232532969, 422212465066001, 844424930131963,
|
|
/* < 1e16 */
|
|
1688849860263953, 3377699720527861, 6755399441055731,
|
|
/* < 1e17 */
|
|
13510798882111483, 27021597764222939, 54043195528445957,
|
|
/* < 1e18 */
|
|
108086391056891903, 216172782113783773, 432345564227567621, 864691128455135207,
|
|
/* < 1e19 */
|
|
1729382256910270481, 3458764513820540933, 6917529027641081903,
|
|
/* < 1e20 */
|
|
13835058055282163729llu,
|
|
};
|
|
// clang-format on
|
|
|
|
#endif /* CMC_COR_HASHTABLE_H */
|