Binary operation

[jipe3001]

Hi everyone,

I am facing the following issue:

I am succesfully reading raw bytes from a Qserialport but cannot find how
to manipulate these bytes on a binary basis.

I tried several format from QBytearray to QDatastream but can never apply a
binary operator (NOT,OR,AND) to the bytes received.

Thks in advance for your coop,

Jean-Pierre

[jipe3001]

Thanks to both of you, it works perfectly,
great support !!

[J.Hilk]

@jipe3001
Hi,
for Bitwise logic operation I would suggest QBitArray thats what it made for or, the good old std:bitset

[jsulm]

@jipe3001 Can you show your code? How did you try to apply binary operators?

[jipe3001]

@J.Hilk

To make my request simpler:

let's say I declare a variable value as follows:

qint8 value;

How can I manipulate this variable with binary operators ?

[sneubert]

since qint8 is typedef for signed char, do you mean

qint8 andVal = value & 0x000111;
qint8 orVal = value | 0x10101010;
qint8 notVal = ~value; 

http://en.cppreference.com/w/cpp/language/operator_arithmetic

[jsulm]

@sneubert Be careful: and, or, not are keywords in C++! You cannot use them as names for variables.
@jipe3001

qint8 value = 0x00;
value |= 0x01; // sets the lowest bit to 1
value &= 0xFE; // sets lowest bit to 0
value = ~value;

[sneubert]

@jsulm
sorry you a right, I tried to make the point clear

[jipe3001]

Thanks to both of you, it works perfectly,
great support !!