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Returns the arctangent of x. The return values are in the range [-pi/2, pi/2].
| ret atan(x) |
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Where:
| Name | In/Out | Template Type | Component Type | Size |
|---|---|---|---|---|
| x | in | scalar, vector, or matrix | float | any |
| ret | out | same as input x | float | same dimension(s) as input x |
This intrinsic function is supported in the following (or above) shader versions:
| Vertex Shader | Pixel Shader |
|---|---|
| vs_1_1 | ps_2_0 |