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What is the difference between = = = and = = ?
output of "==" can be 1, 0 or X.
output of "===" can only be 0 or 1.
When you are comparing 2 nos using "==" and if one/both numbers have one or more bits as "x" then output would be "X" . However if use "===" output would be 0 or 1.
e.g A = 3'b1x0
B = 3'b10x
A = = B would give X as output.
A = = = B would give 0 as output.
"= =" is used for comparison of only 1's and 0's .It can't compare Xs. If any bit of input is X output would be X
"= = =" is used for comparison of X also.
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