XMScalarCosEst function (directxmath.h)

Article
02/22/2024

Estimates the cosine of a radian angle.

Syntax

float XMScalarCosEst(
  [in] float Value
) noexcept;

Parameters

[in] Value

float value describing the radian angle.

Return value

Returns the cosine of Value.

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 6-degree minimax approximation.

Platform Requirements

Microsoft Visual Studio 2010 or Microsoft Visual Studio 2012 with the Windows SDK for Windows 8. Supported for Win32 desktop apps, Windows Store apps, and Windows Phone 8 apps.

Requirements

Requirement	Value
Target Platform	Windows
Header	directxmath.h