Package org.qiunet.utils.math

Class BitUtil

java.lang.Object

org.qiunet.utils.math.BitUtil

public final class BitUtil
extends Object

一些位运算方法

Author:

qiunet 2020-04-01 17:32

Method Summary

Modifier and Type	Method	Description
static boolean	isBitSet(int ori, int index)	判断ori值index位是否有值
static int	readBit(int ori, int index, int len)
static int	removeBit(int ori, int index)	给ori值取消设置index位值
static int	setBit(int ori, int index)	给ori值设置index位值 超大值可以参考BitSet
static int	writeBit(int ori, int val, int index)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

writeBit

public static int writeBit(int ori,
 int val,
 int index)

readBit

public static int readBit(int ori,
 int index,
 int len)

setBit

public static int setBit(int ori,
 int index)

给ori值设置index位值 超大值可以参考BitSet

Parameters:

ori - 原始值

index - index

Returns:

最新值

removeBit

public static int removeBit(int ori,
 int index)

给ori值取消设置index位值

Parameters:

ori - 原始值

index - index

Returns:

最新值

isBitSet

public static boolean isBitSet(int ori,
 int index)

判断ori值index位是否有值

Parameters:

ori - 原始值

index - index

Returns:

最新值