JavaScript bitwise NOT vs Math.floor() (v26)

Revision 26 of this benchmark created by hadron on

Setup

var numbers = [];
  
  //generate amount random numbers
  for (var i = 0; i < 100000; i++) {
    numbers[numbers.length] = Math.random() * 100000;
  }

Test runner

Ready to run.

Testing in
TestOps/sec
bitwise OR with 0
var test;
for (var i = 0; i < 100000; i++) {
  test = ((numbers[i] * 100) | 0) / 100;
}
ready
combo
var test;
for (var i = 0; i < 100000; i++) {
  test = (Math.floor(numbers[i] * 100) / 100).toFixed(2)
}
ready
toFixed(2)
var test;
for (var i = 0; i < 100000; i++) {
  test = numbers[i].toFixed(2);
}
ready
Math.round
var test;
for (var i = 0; i < 100000; i++) {
  test = Math.round(numbers[i] * 100) / 100;
}
ready
roundToTwo Func
var test;
for (var i = 0; i < 100000; i++) {
  test = +(Math.round(numbers[i] + "e+2") + "e-2");
}
ready
bitwise NOT
var test;
for (var i = 0; i < 100000; i++) {
  test = ~~ (numbers[i] * 100) / 100;
}
ready
Math.floor()
var test;
for (var i = 0; i < 100000; i++) {
  test = Math.floor(numbers[i] * 100) / 100;
}
ready

Revisions

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