acos — return the arccosine of the parameter
genType acos(
|
genType x); |
x
Specify the value whose arccosine to return.
atan 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 Shading Language Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Function Name | 1.10 | 1.20 | 1.30 | 1.40 | 1.50 | 3.30 | 4.00 | 4.10 | 4.20 | 4.30 | 4.40 | 4.50 |
| acos | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
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