What this line means?

general
1

I found this line written in one of the solution I went through a solution

  if((P>>=1))
{
//some call to a function was done here
}

I don’t know meaning of this line, is it a check for even/odd, please explain and if possible mention any link where this bitwise operators tricks and tips are given??

2

It is the shorthand notation of P=P>>1 . >> is the right shift operator .

x>>y causes the binary representation of x to be shifted by the y digits to the right .

In the example you asked it is dividing the number by 2 and assigning to the number back .

For more information use : Right and Left Shift operator

3 Likes
3

but if an assigning operation is done in if statement, wont it evaluate to true always ??

4

Yes, till the number becomes zero…For e.g 60, 30, 15, 7, 3, 1, 0.

5

It won`t be to true always , it will evaluate to the value of the variable . For example in this case after the assignment is done it will become , if § , and it be True if p is not zero and false otherwise .

6

Here, it checks for the number to be anything other than 0 and 1.