osfmk/vm/lz4_constants.h

   1 /*
   2  * Copyright (c) 2016-2016 Apple Inc. All rights reserved.
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   8  * Version 2.0 (the 'License'). You may not use this file except in
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  10  * may not be used to create, or enable the creation or redistribution of,
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  28
  29 #pragma once
  30
  31 //  Tunables
  32 #define LZ4_COMPRESS_HASH_BITS 10
  33 #define LZ4_COMPRESS_HASH_ENTRIES (1 << LZ4_COMPRESS_HASH_BITS)
  34 #define LZ4_COMPRESS_HASH_MULTIPLY 2654435761U
  35 #define LZ4_COMPRESS_HASH_SHIFT (32 - LZ4_COMPRESS_HASH_BITS)
  36
  37 //  Not tunables
  38 #define LZ4_GOFAST_SAFETY_MARGIN 128
  39 #define LZ4_DISTANCE_BOUND 65536