Last active
December 27, 2017 08:34
-
-
Save nicholasaiello/d04e0c2aefb8feb28293a868294c129a to your computer and use it in GitHub Desktop.
Math.ab VS Bitwise abs (http://jsbench.github.io/#d04e0c2aefb8feb28293a868294c129a) #jsbench #jsperf
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"/> | |
<title>Math.ab VS Bitwise abs</title> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script> | |
<script src="./suite.js"></script> | |
</head> | |
<body> | |
<h1>Open the console to view the results</h1> | |
<h2><code>cmd + alt + j</code> or <code>ctrl + alt + j</code></h2> | |
</body> | |
</html> |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
"use strict"; | |
(function (factory) { | |
if (typeof Benchmark !== "undefined") { | |
factory(Benchmark); | |
} else { | |
factory(require("benchmark")); | |
} | |
})(function (Benchmark) { | |
var suite = new Benchmark.Suite; | |
Benchmark.prototype.setup = function () { | |
const n = -100.32; | |
}; | |
suite.add("const abs = Math.abs(n);", function () { | |
const abs = Math.abs(n); | |
}); | |
suite.add("const getAbsoluteValue = (n) => {", function () { | |
const getAbsoluteValue = (n) => { | |
if (n >= 0) { | |
return n; | |
} | |
const mask = n >> 31; | |
const abs = (mask ^ n) - mask; | |
return abs - (n - (n >> 0)); | |
}; | |
const abs = getAbsoluteValue(n); | |
}); | |
suite.on("cycle", function (evt) { | |
console.log(" - " + evt.target); | |
}); | |
suite.on("complete", function (evt) { | |
console.log(new Array(30).join("-")); | |
var results = evt.currentTarget.sort(function (a, b) { | |
return b.hz - a.hz; | |
}); | |
results.forEach(function (item) { | |
console.log((idx + 1) + ". " + item); | |
}); | |
}); | |
console.log("Math.ab VS Bitwise abs"); | |
console.log(new Array(30).join("-")); | |
suite.run(); | |
}); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment