bitwisenot

bitwisenot() Function

Performs a bitwise 'not' operation of the {number}. A bitwise not is performed by taking the binary representation of the {number} and performing a logical 'not' operation on each of these bits.

Logical "not" Table

Bit	Result
0	1
1	0

Unfortunately its not quite as simple as the table above makes it appear since number are a string of 32 (or more bits) so a 1 in binary is actually a 00000000000000000000000000000001 and a 0 is actually a 00000000000000000000000000000000 so the table is now.

       bnot of binary 00000000000000000000000000000000
               is             11111111111111111111111111111111
       which is -1 in decimal

       bnot of binary 00000000000000000000000000000001 
       is             11111111111111111111111111111110
       which is -2 in decimal

If you are unsure why the results are negative then you can get more information by reading Twos_complement

Usage

[h: val = bnot(num)]
[h: val = bitwisenot(num)]

Examples

[bnot(1)]

Returns 0.

[r: bnot(1)]

Returns 0.

[r: bnot(12]

Returns -13.