acos — return the arccosine of the parameter
genType acos(
|
genType x) ; |
x
Specify the value whose arccosine to return.
acos
returns the angle whose trigonometric
cosine is $x$. The range of values returned by
acos
is $[0,\pi]$. The result is undefined
if $\left| x \right| > 1$.
OpenGL ES Shading Language Version | |||
---|---|---|---|
Function Name | 1.00 | 3.00 | 3.10 |
acos | ✔ | ✔ | ✔ |
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