Estimates the normalized version of a 4D vector.
XMVECTOR XM_CALLCONV XMVector4NormalizeEst( FXMVECTOR V );
Returns an estimate of the normalized version of V.
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.
|Header||directxmath.h (include DirectXMath.h)|