7zip/C/BwtSort.h at 24.08 · AIahmedshrf/7zip

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/* BwtSort.h -- BWT block sorting

2023-03-03 : Igor Pavlov : Public domain */

#ifndef ZIP7_INC_BWT_SORT_H

#define ZIP7_INC_BWT_SORT_H

#include "7zTypes.h"

EXTERN_C_BEGIN

/* use BLOCK_SORT_EXTERNAL_FLAGS if blockSize can be > 1M */

/* #define BLOCK_SORT_EXTERNAL_FLAGS */

#ifdef BLOCK_SORT_EXTERNAL_FLAGS

#define BLOCK_SORT_EXTERNAL_SIZE(blockSize) ((((blockSize) + 31) >> 5))

#else

#define BLOCK_SORT_EXTERNAL_SIZE(blockSize) 0

#endif

#define BLOCK_SORT_BUF_SIZE(blockSize) ((blockSize) * 2 + BLOCK_SORT_EXTERNAL_SIZE(blockSize) + (1 << 16))

UInt32 BlockSort(UInt32 *indices, const Byte *data, UInt32 blockSize);

EXTERN_C_END

#endif