Abs vs *-1

JavaScript performance comparison

Test case created by TortoiseWrath

Info

Quick highly-retroactive test for http://stackoverflow.com/questions/441893/which-is-faster-math-absvalue-or-value-1

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var x=-747;
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
-x
y=-x;
pending…
abs(x)
y=Math.abs(x);
pending…

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