Function XMVectorCosEst

pub fn XMVectorCosEst(V: FXMVECTOR) -> XMVECTOR

Estimates the cosine of each component of an XMVECTOR.

Parameters

V Vector for which to compute the cosine.

Return value

Returns a vector. Each component is an estimate of the cosine of the corresponding component of V.

Remarks

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.

This function uses a 7-degree minimax approximation.

Reference

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