/* crc32_fold.h -- crc32 folding interface

* Copyright (C) 2021 Nathan Moinvaziri

* For conditions of distribution and use, see copyright notice in zlib.h

*/

#ifndef CRC32_FOLD_H_

#define CRC32_FOLD_H_

#define CRC32_FOLD_BUFFER_SIZE (16 * 4)

/* sizeof(__m128i) * (4 folds) */

typedef struct crc32_fold_s {

uint8_t fold[CRC32_FOLD_BUFFER_SIZE];

uint32_t value;

} crc32_fold;

Z_INTERNAL uint32_t crc32_fold_reset_c(crc32_fold *crc);

Z_INTERNAL void crc32_fold_copy_c(crc32_fold *crc, uint8_t *dst, const uint8_t *src, size_t len);

Z_INTERNAL void crc32_fold_c(crc32_fold *crc, const uint8_t *src, size_t len, uint32_t init_crc);

Z_INTERNAL uint32_t crc32_fold_final_c(crc32_fold *crc);

#endif