branch-prediction Archives

C++, Programming

IT Nursery

What is the effect of ordering if…else if statements by probability?

Specifically, if I have a series of if…else if statements, and I somehow know beforehand the relative probability that each statement will evaluate ...

June 2, 2022
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Why is (a*b != 0) faster than (a != 0 && b != 0) in Java?

I’m writing some code in Java where, at some point, the flow of the program is determined by whether two int variables, “a” ...

May 6, 2022
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Why is processing a sorted array faster than processing an unsorted array?

Here is a piece of C++ code that shows some very peculiar behavior. For some strange reason, sorting the data (before the timed ...

April 9, 2022
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