how do you normalize a vector in dx10?

[Blessman11]

how do you normalize a vector in dx10?
Plus does dx10 allow you to create a vector via two points?

[LB]

To normalize a vector, you divide the X and Y components by its length.

[Blessman11]

I thought there was a DX10 function already provided, I didn't want to create my own one, but if that's the case I guess I have to make it then