Is there any actual difference in performance? Is it faster? (lets say I use it in at least 100 cases in the same program, would it improve my program in terms of speed?)
Is there any reason to use (nr & 1 == 0) over (nr % 2 == 0) to check for parity?
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This question might be more appropriate on Software Engineering Stack Exchange.
If you're using an optimizing compiler chances are any form of
n % <power of two>will get optimized ton & <power of two minus one>anyway, since they are equivalent but on pretty much every architecture I can think of the latter is much more efficient.The former form expresses your intent more clearly, though a lot of developers will recognize
n & 1as a "faster version" ofn % 2.