AND it with x00001000 and check if its equal to x00001000
Note that the digits represented here are in hex.
if((num & x00001000)==x00001000)
Note that the digits represented here are in hex.
0 0 0 0 1 0 0 0
^
|
x0000 0000 0000 0000 0001 0000 0000 0000 = 32 bits
^ ^ ^
| | |
0th bit 20th bit 32nd bit
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