Bug in NSNumberFormatterStyle.SpellOutStyle?

Question

When I use NSNumberFormatterStyle.SpellOutStyle for larger numbers (not numbers that overflow the type) it seems to break down somewhere in the mid-quadrillions.

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Answer 1

I don't have a solution but I have a guess:

NSNumberFormatter uses a Double to store the value (53 bits), so your value is too big.

I suppose it makes the formatter generate an erroneous spelling instead of failing with a real error message: so I'd say yes, it's a bug with NSNumberFormatterStyle.SpellOutStyle, it should not spit out a dummy value when failing.