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Math.cbrt #jsbench #jsperf (http://jsbench.github.io/#7a271ffbf88a5d4b0f5b42b13b89144e) #jsbench #jsperf
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"/> | |
| <title>Math.cbrt #jsbench #jsperf</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> |
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| "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 () { | |
| var i = 0; | |
| var s = 1024 * 16; | |
| var x = new Array(s); | |
| for (var j = 0; j < s; j += 1) { | |
| x[j] = (j / s + 1) * Math.pow(2, j % 1024); | |
| } | |
| var f1 = function (x) { | |
| x = +x; | |
| return Math.cbrt(x); | |
| }; | |
| var f2 = function (x) { | |
| x = +x; | |
| var y = Math.pow(x, 1 / 3); | |
| return ((x / (y * y)) + (2 * y)) / 3; | |
| }; | |
| var f3 = function (x) { | |
| x = +x; | |
| var y = Math.exp(Math.log(x) / 3); | |
| return ((x / (y * y)) + (2 * y)) / 3; | |
| }; | |
| }; | |
| suite.add("if (f1(x[i]) === 0) throw new Error(x[i]); i += 1; if (i > s) i = 0;", function () { | |
| if (f1(x[i]) === 0) throw new Error(x[i]); i += 1; if (i > s) i = 0; | |
| }); | |
| suite.add("if (f2(x[i]) === 0) throw new Error(x[i]); i += 1; if (i > s) i = 0;", function () { | |
| if (f2(x[i]) === 0) throw new Error(x[i]); i += 1; if (i > s) i = 0; | |
| }); | |
| suite.add("if (f3(x[i]) === 0) throw new Error(x[i]); i += 1; if (i > s) i = 0;", function () { | |
| if (f3(x[i]) === 0) throw new Error(x[i]); i += 1; if (i > s) i = 0; | |
| }); | |
| 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.cbrt #jsbench #jsperf"); | |
| console.log(new Array(30).join("-")); | |
| suite.run(); | |
| }); |
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