isRealNumber vs isFinite

JavaScript performance comparison

Test case created by ryanve

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    function isRealNumber(o) {
        return typeof o == 'number' && o === o && o !== (o+1);
    }
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
isRealNumber
isRealNumber(47) && isRealNumber(null);
pending…
isFinite
isFinite(47) && isFinite(null);
pending…

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