Generic ordinal format style for all BinaryInteger types

GenericOrdinalFormatStyle.swift

import Foundation

extension FormatStyle {
    static func ordinal<FormatInput: BinaryInteger>() -> OrdinalFormatStyle<FormatInput>
        where Self == OrdinalFormatStyle<FormatInput>
    {
        OrdinalFormatStyle()
    }
}

struct OrdinalFormatStyle<FormatInput: BinaryInteger>: FormatStyle {
    func format(_ value: FormatInput) -> String {
        let formatter = NumberFormatter()
        formatter.numberStyle = .ordinal
        return formatter.string(for: value)!
    }
}

(42 as Int).formatted(.ordinal()) // "42nd"
(42 as UInt8).formatted(.ordinal()) // "42nd"