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 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.163 Safari/537.36
Chrome 80
Mac OS X 10.14.6
Desktop
4 years ago
Test name Executions per second
Power function (small number) 4104708.0 Ops/sec
Power function (large number) 4148108.0 Ops/sec
Power function (very large number) 4004616.2 Ops/sec
Square root function (small number) 4134129.8 Ops/sec
Square root function (large number) 4103151.5 Ops/sec
Square root function (very large number) 4031332.2 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);