Errors compiling script with UDF

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Im using a UDF in my script for this:

$arcsinh = (ASinh($sigrad))

and it works just fine but then i go to compile it there are errors:

[Jos]

That could be, but did you actually read the Warning (not Error)?

Jos

Edited May 5, 2019 by Jos

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I read it but I dont see why its happening and have no clue how to fix it

The variable is there so how could it not be declared or created

[Jos]

Well, the $ret[] array is not defined in the snippet you have posted,  so what about you define it before use as a local variable?
... and you have an local array $arr defined for which purpose?

Jos

Edited May 5, 2019 by Jos

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I tried fixing it but the UDF just kept giving me issues so i just made the function myself\

In case someone in the future needs to make a arcsinh heres how:

Log($x+(Sqrt($x^2+1))/Log(2.71828182845904523536028747135266249775724709369995))

 

Edited May 5, 2019 by ----

[Subz]

As Jos said, you declared $arr you didn't declare $ret your code should look like:

Func ConchoiidCurve($a, $theta)
    Local $ret[2]
    Local $r = sec($theta)+$a*Cos($theta)
    $ret[0] = Cos($theta)*$r
    $ret[1] = Sin($theta)*$r
    Return $ret
EndFunc

Func SemicubicalParabolaCurve($a, $t)
    Local $ret[2]
    $ret[0] = $t^2
    $ret[1] = $a*$t^3
    Return $ret
EndFunc