Function XMVector3NormalizeEst

pub fn XMVector3NormalizeEst(V: FXMVECTOR) -> FXMVECTOR

Estimates the normalized version of a 3D vector.

Parameters

V 3D vector.

Return value

Returns an estimate of the normalized version of V.

Remarks

For a vector with 0 length or infinite length, this function returns a vector of QNaN.

Est functions offer increased performance at the expense of reduced accuracy. Est functions are appropriate for non-critical calculations where accuracy can be sacrificed for speed. The exact amount of lost accuracy and speed increase are platform dependent.

Reference

https://docs.microsoft.com/en-us/windows/win32/api/directxmath/nf-directxmath-XMVector3NormalizeEst