Converts numbers into English words.
The short scale, has different words for each power of 1000.
This library expresses numbers from zero to thousands, millions, billions, trillions, and quadrillions, up to 999_999_999_999_999_999.
Copyright 2021, Jürgen Leschner - github.com/jldec - MIT license
Conditionally-compiled for historic reference.
Returns String with words given an unsigned integer.
Same as shortscale but writes words into mutable String.