abs method doesnt work with long negative numbers.

got this value `-2.689785E + 23` and i need convert it to absolute before work with him.

When `abs` method is used, it returns` 0`. I was checking why and it's about that `abs` checks if number is zero before call` additiveInverse`, that method also check if value is zero.

The scale with that number is `-1` automaticaly, then the check of isZero always returns true.