Math.abs() performance

abs.js

var test = require('testling');

test('Math.abs performance', function (t) {
    var t0 = new Date;
    for (var i = 0; i < 100 * 1000; i++) Math.abs(i - 50 * 1000)
    t.log(new Date - t0);
    t.end();
});

gistfile1.txt

$ curl -u substack@gmail.com -sSNT abs.js testling.com
Enter host password for user 'substack@gmail.com':
Bundling...  done

iexplore/7.0        0/0    0 % ok
  Log: 3000
iexplore/8.0        0/0    0 % ok
  Log: 1578
iexplore/9.0        0/0    0 % ok
  Log: 365
chrome/15.0         0/0    0 % ok
  Log: 57
firefox/7.0         0/0    0 % ok
  Log: 158
opera/11.5          0/0    0 % ok
  Log: 166
safari/5.1          0/0    0 % ok
  Log: 176

total               0/0    0 % ok