Run results for: trigata

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3321.0 Safari/537.36

Browser: Chrome 65

Operating system: Mac OS X 10.10.1

Device Platform: Other

Date tested: 5 years ago

Test name	Executions per second
native	537446.0 Ops/sec
alt	511532.9 Ops/sec
alt2	516019.2 Ops/sec

Script Preparation code:

function rand(min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
}

function angle(x, y) {
  let result = Math.atan(y / x);
  if (x < 0) {
    result += Math.PI;
  } else if (y < 0) {
    result += 2 * Math.PI;
  }
  return result;
}

function angle2(x, y) {
    if (x == 0)
      return (y == 0) ? 0 : (y > 0 ? Math.PI/2 : -Math.PI/2)
  
    var atan_xy = Math.atan(y / x)
    if (x > 0)
      return atan_xy
    else // x < 0
      return atan_xy + (y < 0 ? -Math.PI : Math.PI)
}

Tests:

native
var xO = rand(1, 1000); var yO = rand(1, 1000); Math.atan(yO, xO);
alt
var xT = rand(1, 1000); var yT = rand(1, 1000); angle(xT, yT);
alt2
var xD = rand(1, 1000); var yD = rand(1, 1000); angle2(xD, yD);

native

alt

alt2