MeasureThat.net

Run results for: Power vs Square Root functions

Measure the performance of the Power and Square Root functions. Conclusion: The underlying math logic seems to be the same, regardless of the function used.

Go to the benchmark
Run details:
Mozilla/5.0 (Linux; Android 8.1.0; Moto G (5S) Plus) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.185 Mobile Safari/537.36
Chrome Mobile 86
Android 8.1.0
Mobile
4 years ago
Test name Executions per second
Power function (small number) 510318.2 Ops/sec
Power function (large number) 533491.7 Ops/sec
Power function (very large number) 535493.3 Ops/sec
Square root function (small number) 527982.4 Ops/sec
Square root function (large number) 534187.1 Ops/sec
Square root function (very large number) 526195.4 Ops/sec
Script Preparation code:
AخA
 
// Javascript uses floats for numbers. Generaate some numbers in advance.
var smallNumber = Math.pow(2, 7) + Math.floor(Math.random() * Math.pow(2,7));
var largeNumber = Math.pow(2, 30) + Math.floor(Math.random() * Math.pow(2,30));
var veryLargeNumber = Math.pow(2, 60) + Math.floor(Math.random() * Math.pow(2,60));
Tests:

  • Power function (small number)

     
    Math.pow(smallNumber, 2);

  • Power function (large number)

     
    Math.pow(largeNumber, 2);

  • Power function (very large number)

     
    Math.pow(veryLargeNumber, 2);

  • Square root function (small number)

     
    Math.sqrt(smallNumber);

  • Square root function (large number)

     
    Math.sqrt(largeNumber);

  • Square root function (very large number)

     
    Math.sqrt(veryLargeNumber);