Package com.diozero.util

Class BitManipulation

java.lang.Object

com.diozero.util.BitManipulation

public class BitManipulation
extends Object

Constructor Summary

Constructors

Constructor	Description
BitManipulation()

Method Summary

Modifier and Type	Method	Description
static int	bytesToWord(int msb, int lsb, boolean isSigned)
static byte	getBitMask(int bitNumber)
static byte	getBitMask(int... bitNumbers)
static boolean	isBitSet(byte value, int bitNumber)
static byte	reverseByte(byte value)
static short	reverseShort(short value)
static byte	setBitValue(byte value, int bitNumber, boolean on)
static byte	updateValueWithMaskedData(byte value, short mask, byte data)	Update only the bits as specified by mask with the specified bits; the value of all other bits are preserved.
static byte	updateWithMaskedData(byte value, short mask, byte data, int dataShift)

Methods inherited from class java.lang.Object

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

Constructor Detail

BitManipulation

public BitManipulation()

Method Detail

setBitValue

public static byte setBitValue(byte value,
                               int bitNumber,
                               boolean on)

getBitMask

public static byte getBitMask(int bitNumber)

getBitMask

public static byte getBitMask(int... bitNumbers)

isBitSet

public static boolean isBitSet(byte value,
                               int bitNumber)

updateWithMaskedData

public static byte updateWithMaskedData(byte value,
                                        short mask,
                                        byte data,
                                        int dataShift)

updateValueWithMaskedData

public static byte updateValueWithMaskedData(byte value,
                                             short mask,
                                             byte data)

Update only the bits as specified by mask with the specified bits; the value of all other bits are preserved. Note: mask is a short to ensure unsigned behaviour.

Parameters:

value - the value to update

mask - a bit mask with 1s specifying the bits to update

data - the new bits to apply to the value

Returns:

the updated value

bytesToWord

public static int bytesToWord(int msb,
                              int lsb,
                              boolean isSigned)

reverseByte

public static byte reverseByte(byte value)

reverseShort

public static short reverseShort(short value)