# Talk:Abs

### From GECK

Sin, cos, tan, pow, log, and abs (particularly pow and log) are extremely slow. Do not use them in script blocks that get executed every frame.

While I have my doubts too, this wouldn't be hard to test and was added by a dev. Please check it - maybe have 100 of them going in a frame and see if it decreases the FPS.

--Haama 16:03, 20 December 2008 (UTC)

- It's literally impossible. abs is just switching the sign if it's negative, and works exactly no slower than:

if num < 0 set num to 0 - num endif

- And as we both no doubt have done, the game will not slow down if you do
*more complicated*snippet 500 times in a frame. - In C you can just do abs(num) because it's a predefined function and every CPU is engineered to do that op (among others) ridiculously fast (check your Ghz and multiply that by ~1 billion times per second).
- Clearly they just copied the same template for all the new math functions and switched the function names in each. It applies for all of the new math functions
*except*abs. - --Quetzilla 19:13, 20 December 2008 (UTC)

- A better question is, "Why did they use slow implementations of these functions?" There are ridiculously fast algorithms publicly available for all of those operations.
- DragoonWraith · talk · 20:36, 20 December 2008 (UTC)