Logand

[vishshreevT578L]

i have gone through the tutorials for this function but i did not understood this function.

This are the 3 examples 

(logand 7 15 3)
3

(logand 2 3 15)
2

(logand 8 3 4)
0

i dont understand here why it returned 3...2...0 

Can anyone make me understand why and when this function is used.

[dbroad]

(logand 8 3 4)

8 = 1 0 0 0
4 = 0 1 0 0
3 = 0 0 1 1

logand is bitwise. And the columns above.

(and 1 0 0) = 0

(and 0 1 0) = 0

(and 0 0 1) = 0

(and 0 0 1) = 0

0 0 0 0 = 0

(logand 7 15 3)

7  =  0 0 1 1 1

15=  0 1 1 1 1

3  =  0 0 0 1 1

Which columns and to 1?

0 0 0 1 1 = 3

[Kent1Cooper · Accepted solution]

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@vishshreevT578L wrote:

.... 

Can anyone make me understand why and when this function is used.

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Check this out.  As you will see from replies, some found it "clear as mud," but some found it very helpful -- I hope you will be among the latter.

[vishshreevT578L]

Sir,

It was a helpful article, nicely written to understand by anyone.

Thanks once again sir....