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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright 2023 Red Hat4 */5 6#ifndef UDS_RADIX_SORT_H7#define UDS_RADIX_SORT_H8 9/*10 * Radix sort is implemented using an American Flag sort, an unstable, in-place 8-bit radix11 * exchange sort. This is adapted from the algorithm in the paper by Peter M. McIlroy, Keith12 * Bostic, and M. Douglas McIlroy, "Engineering Radix Sort".13 *14 * http://www.usenix.org/publications/compsystems/1993/win_mcilroy.pdf15 */16 17struct radix_sorter;18 19int __must_check uds_make_radix_sorter(unsigned int count, struct radix_sorter **sorter);20 21void uds_free_radix_sorter(struct radix_sorter *sorter);22 23int __must_check uds_radix_sort(struct radix_sorter *sorter, const unsigned char *keys[],24 unsigned int count, unsigned short length);25 26#endif /* UDS_RADIX_SORT_H */27