Package org.xerial.snappy
Class PureJavaCrc32C
- java.lang.Object
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- org.xerial.snappy.PureJavaCrc32C
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- All Implemented Interfaces:
java.util.zip.Checksum
public class PureJavaCrc32C extends java.lang.Object implements java.util.zip.Checksum
A pure-java implementation of the CRC32 checksum that uses the CRC32-C polynomial, the same polynomial used by iSCSI and implemented on many Intel chipsets supporting SSE4.2.
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Field Summary
Fields Modifier and Type Field Description private int
crc
the current CRC value, bit-flipped(package private) static int[]
T8_0
(package private) static int[]
T8_1
(package private) static int[]
T8_2
(package private) static int[]
T8_3
(package private) static int[]
T8_4
(package private) static int[]
T8_5
(package private) static int[]
T8_6
(package private) static int[]
T8_7
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Constructor Summary
Constructors Constructor Description PureJavaCrc32C()
Create a new PureJavaCrc32 object.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
getIntegerValue()
long
getValue()
void
reset()
void
update(byte[] b, int off, int len)
void
update(int b)
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Method Detail
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getIntegerValue
public int getIntegerValue()
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getValue
public long getValue()
- Specified by:
getValue
in interfacejava.util.zip.Checksum
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reset
public void reset()
- Specified by:
reset
in interfacejava.util.zip.Checksum
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update
public void update(byte[] b, int off, int len)
- Specified by:
update
in interfacejava.util.zip.Checksum
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update
public final void update(int b)
- Specified by:
update
in interfacejava.util.zip.Checksum
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