Absolute value speed

JavaScript performance comparison

Revision 5 of this test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    function abs(n){
    return n < 0 ? -n : n;
    }
   
    function bit_abs(n){
    var mask = n >> 31;
    return (n ^ mask) - mask;
    }
};

Benchmark.prototype.teardown = function() {
    var a = 2, b = -3, c = 0
};
</script>

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Testing in unknown unknown
Test Ops/sec
Math
Math.abs(a);
Math.abs(b);
Math.abs(c);
pending…
Ternary expression
abs(a);
abs(b);
abs(c);
pending…
Bitwise operations
bit_abs(a);
bit_abs(b);
bit_abs(c);
pending…

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