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44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
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/*
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* lzodefs.h -- architecture, OS and compiler specific defines
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*
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* Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com>
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*
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* The full LZO package can be found at:
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* http://www.oberhumer.com/opensource/lzo/
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*
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* Changed for kernel use by:
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* Nitin Gupta <nitingupta910@gmail.com>
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* Richard Purdie <rpurdie@openedhand.com>
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*/
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#define LZO_VERSION 0x2020
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#define LZO_VERSION_STRING "2.02"
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#define LZO_VERSION_DATE "Oct 17 2005"
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#define M1_MAX_OFFSET 0x0400
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#define M2_MAX_OFFSET 0x0800
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#define M3_MAX_OFFSET 0x4000
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#define M4_MAX_OFFSET 0xbfff
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#define M1_MIN_LEN 2
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#define M1_MAX_LEN 2
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#define M2_MIN_LEN 3
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#define M2_MAX_LEN 8
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#define M3_MIN_LEN 3
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#define M3_MAX_LEN 33
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#define M4_MIN_LEN 3
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#define M4_MAX_LEN 9
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#define M1_MARKER 0
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#define M2_MARKER 64
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#define M3_MARKER 32
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#define M4_MARKER 16
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#define D_BITS 14
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#define D_MASK ((1u << D_BITS) - 1)
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#define D_HIGH ((D_MASK >> 1) + 1)
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#define DX2(p, s1, s2) (((((size_t)((p)[2]) << (s2)) ^ (p)[1]) \
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<< (s1)) ^ (p)[0])
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#define DX3(p, s1, s2, s3) ((DX2((p)+1, s2, s3) << (s1)) ^ (p)[0])
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