# Coding practice while waiting on V3? **URL:** \ **Category:** Uncategorized\ **Created:** [January 12, 2021, 11:45am UTC](https://forum.electromage.com/t/coding-practice-while-waiting-on-v3/902 "2021-01-12T11:45:20Z")\ **Posts on this page:** 1\ **Showing post:** 25
**Author:** ![Scruffynerf](https://forum.electromage.com/letter_avatar_proxy/v4/letter/s/34f0e0/32.png) [@Scruffynerf](https://forum.electromage.com/u/Scruffynerf)\ **Post date:** [February 6, 2021, 8:45pm UTC](https://forum.electromage.com/t/coding-practice-while-waiting-on-v3/902/25 "2021-02-06T20:45:51Z")
> [@JustPete](#): > > PI2 Is this Pi squared? 2 PI (6.28…) useful for Radian math (angles) > [@](#): > > Following would be PI3\_4… PI \*3/4 Also often useful. See > [@Atan2(y, x) bug?](https://forum.electromage.com/t/atan2-y-x-bug/445/6): > > @Scruffynerf, Sure, you can get a small bit of performance with a constant. You can also do that in the pattern with a var. Vars, literals, and constants have near the same performance. e.g. var HALF\_PI = PI/2 If I were to add half-PI to the constants, what should it be called? HALF\_PI, PI\_2, PI1\_2? The naming convention I borrowed sort of uses \_ in place of division, e.g. PI3\_4 is PI \* 3 / 4. I added PI2 because I used it a lot, when I really wanted [1 Tau](https://en.wikipedia.org/wiki/Turn_(angle)#Tau_proposals). Search for the rest, I know we have discussed timer and random recently. The blinkfade code I’d have to go look at, someone else know the answer? --- _[View the full topic](https://forum.electromage.com/t/coding-practice-while-waiting-on-v3/902)._