XMVectorATanEst

Estimates the arctangent of each component of an XMVECTOR.

Syntax

XMVECTOR XMVectorATanEst(
         XMVECTOR V
)  

Parameters

V
Type: XMVECTOR 

Vector for which to compute the arctangent.

Return value

Type: XMVECTOR 

Returns a vector whose components are estimates of the arctangent of the corresponding components 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 9-degree minimax approximation.

Requirements

Header: Declared in directxmath.h.