Script Preparation code:
AخA
 
var someFloat = 0.123456789;
Tests:
  • toFixed(4) someFloat.toFixed(4); someFloat.t

     
    someFloat.toFixed(4);
  • toPrecision(4).toString()

     
    someFloat.toPrecision(4);
  • ~(someFloat*1000)/-1000

     
    ~(someFloat*1000)/-1000
  • Math.floor fast

     
    ~~(someFloat * 10000) / 10000;
  • Math.trunc

     
    Math.trunc(someFloat * 10000) / 10000;
Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Experimental features:

  • Test case name Result
    toFixed(4) someFloat.toFixed(4); someFloat.t
    toPrecision(4).toString()
    ~(someFloat*1000)/-1000
    Math.floor fast
    Math.trunc

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: 3 years ago)
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.2 Safari/605.1.15
Safari 14 on Mac OS X 10.15.7
View result in a separate tab
Test name Executions per second
toFixed(4) someFloat.toFixed(4); someFloat.t 10640115.0 Ops/sec
toPrecision(4).toString() 9127618.0 Ops/sec
~(someFloat*1000)/-1000 25795182.0 Ops/sec
Math.floor fast 25780622.0 Ops/sec
Math.trunc 10552778.0 Ops/sec