F# strip Unit of Measure from array
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I am calling external function requiring `float[]`, but my array is `float<m>[]`.
How could I strip the unit of measure from array?

I need something like the function below, but this does not compile.
And I would like to avoid any iterating or duplicating of the array, as `float<m>` and `float` values are identical...

    let demeasure (arr:float<m>[]): float[] = float[] (arr)