Qt 自定义位操作类

1.自己封装了一个位操作、字节操作简单的类，仅供参考

直接上源码：

//.h

#ifndef BITSMANAGER_H
#define BITSMANAGER_H

#include <qglobal.h>

class BitsManager
{
public:
    BitsManager();

    //指定某一位为1 位编号[0~31]
    static quint32 setBit1(quint32 value,int bitNum);

    //指定某一位为0 位编号[0~31]
    static quint32 setBit0(quint32 value,int bitNum);

    //指定某一位取反
    static quint32 setBitReverse(quint32 value,int bitNum);

    //获取某一位的值
    static quint32 getBit(quint32 value,int bitNum);

    //获取单字节 [0~3]
    static quint32 getByte(quint32 value,int byteNum);

    //清零某个字节[0~3]
    static quint32 setByte0(quint32 value,int byteNum);

    //置某个字节为1 [0~3]
    static quint32 setByte1(quint32 value,int byteNum);
};

#endif // BITSMANAGER_H

//.cpp

#include "BitsManager.h"

BitsManager::BitsManager()
{

}

quint32 BitsManager::setBit1(quint32 value, int bitNum)
{
    return value|(1<<bitNum);
}

quint32 BitsManager::setBit0(quint32 value, int bitNum)
{
    return value&=~(1<<bitNum);
}

quint32 BitsManager::setBitReverse(quint32 value, int bitNum)
{
    return value^=(1<<bitNum);
}

quint32 BitsManager::getBit(quint32 value, int bitNum)
{
    return (value)>>(bitNum)&1;
}

quint32 BitsManager::getByte(quint32 value, int byteNum)
{
    quint32 ret = 0;
    if(byteNum == 0)
        ret = (value>>0) & 0x000000ff;
    else if(byteNum == 1)
        ret = (value>>8) & 0x000000ff;
    else if(byteNum == 2)
        ret = (value>>16) & 0x000000ff;
    else if(byteNum == 3)
        ret = (value>>24) & 0x000000ff;

    return ret;
}

quint32 BitsManager::setByte0(quint32 value, int byteNum)
{
    quint32 ret = 0;

    if(byteNum == 0)
        ret = value &= 0xffffff00;
    else if(byteNum == 1)
        ret = value &= 0xffff00ff;
    else if(byteNum == 2)
        ret = value &= 0xff00ffff;
    else if(byteNum == 3)
        ret = value &= 0x00ffffff;

    return ret;
}

quint32 BitsManager::setByte1(quint32 value, int byteNum)
{
    quint32 ret = 0;

    if(byteNum == 0)
        ret = value |= 0x000000ff;
    else if(byteNum == 1)
        ret = value |= 0x0000ff00;
    else if(byteNum == 2)
        ret = value &= 0x00ff0000;
    else if(byteNum == 3)
        ret = value &= 0xff000000;

    return ret;
}