Re: [Algorithms] How to get 3dvector largest coordinate index?

[Matt J <mjo...@gm...>]

I think you still need the absolute value

1. x = -10 and y = -5
2. x = 10 and y = 5

Both cases x is the largest component, but only in the first case is y > x

What's about something like:
> yx = SignBit(x-y)>>31 // 1 if y > x
> yz = SignBit(z-y)>>31
> zx = SignBit(x-z)>>31
> zy = SignBit(y-z)>>31
> return (yx&yz) | ((zx&zy)<<1);
>
> 4 subs (int or float, doesn't matter), a few simple bit instructions, no
> jump (untested, just got back from a diner)?
>