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int转4字节数组
QByteArray SCL::intTo4ByteArray(int i)
{
QByteArray ba;
ba.resize(4);
ba[0] = (uchar)(0x000000ff & i);
ba[1] = (uchar)((0x0000ff00&i)>>8);
ba[2] = (uchar)((0x00ff0000&i)>>16);
ba[3] = (uchar)((0xff000000&i)>>24);
return ba;
}
int转2字节数组
QByteArray SCL::intTo2ByteArray(int i)
{
QByteArray ba;
ba.resize(2);
ba[0] = (uchar)(0x000000ff & i);
ba[1] = (uchar)((0x0000ff00&i)>>8);
return ba;
}
int转单字节
QByteArray SCL::intToByteArray(int i)
{
QByteArray ba;
ba.resize(1);
ba[0] = (uchar)(0x000000ff & i);
return ba;
}
字节数组转int
int SCL::ByteArray4ToInt(const QByteArray &bytes)
{
int i = bytes[0] & 0x000000FF;
i |= ((bytes[1] <<8)&0x0000FF00);
i |= ((bytes[2] <<16)&0x00FF0000);
i |= ((bytes[3] <<24)&0xFF000000);
return i;
}