bitcheck vs arithmetic (odd and even)

JavaScript performance comparison

Revision 3 of this test case created by Guilherme Nascimento

Info

Test "&" vs "%" perfomance to odd/even checking.

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    window.numA=20, window.numB=21;
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
arithmetic
(window.numA % 2 !== 0);
(window.numB % 2 !== 0);

(window.numA % 2 === 0);
(window.numB % 2 === 0);
pending…
bitcheck
(window.numA & 1)===0;
(window.numB & 1)===0;

(window.numA & 1)!==0;
(window.numB & 1)!==0;
pending…
bitcheck "~"
( ~ window.numA & 1)===0;
( ~ window.numB & 1)===0;

( ~ window.numA & 1)!==0;
( ~ window.numB & 1)!==0;
pending…

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