Operations are unchecked by default; the Checked operators live in a separate module.
1 2 3 4 5 6 7 8 9 10 11 12
let x = System.Int32.MaxValue let y = x + 3 printfn "%d" y open Checked let x = System.Int32.MaxValue let y = x + 3 printfn "%d" y
Oddly, though, pown will throw on overflow, which seems like a strange inconsistency.
For some reason, an OverflowException was being thrown instead of a more helpful one that would have told me that I was calling an array out of bounds.
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I was surprised to see that by default, integer overflows result in an OverflowException in F#. I do not want this behavior. Is there some or other label I can give a function, or a command I can give FSI to allow me to safely discard higher-order bits during integer operations?