atan - HLSL
Microsoft DirectX 9.0 SDK Update (October 2004)

atan - HLSL


Returns the arctangent of x. The return values are in the range [-pi/2, pi/2].

Syntax

ret atan(x)

Where:

NameIn/OutTemplate TypeComponent TypeSize
xinscalar, vector, or matrixfloatany
retoutsame as input xfloatsame dimension(s) as input x

Minimum Shader Version

This intrinsic function is supported in the following (or above) shader versions:

Vertex ShaderPixel Shader
vs_1_1ps_2_0


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