`abs` does not takes double as argument

[Vasya-M]

in interpreter:

brs> ?abs(1.1222222222222)
REPL(1,20-21): Provided arguments don't match Abs's signature.
    function Abs(x as Float) as Float:
        * Argument 'x' must be of type Float, but received Double.

But in brightscript it works, and abs will truncate it to float