I'm trying to optimize my project and eliminate unnecessary function calls, and the one I use the most is Math.abs. I ran a quick test and I use it 200-300 times each frame; checking for collision between the character and monsters, determining if objects are close enough to be in view, and some other misc calculations of that sort.

My question is: am I using it enough that optimizing for it will see any real performance boost? If so, how else can I possibly express Math.abs?