Contents

module Polyfill
  module V2_4
    module Integer
      module Instance
        module Round
          module Method
            def round(ndigits = 0, half: nil)
              unless [nil, :down, :even, :up, 'down', 'even', 'up'].include?(half)
                raise ArgumentError, "invalid rounding mode: #{half}"
              end
              ndigits = ndigits.to_int
              return super() if ndigits == 0
              return to_f if ndigits > 0

              place = 10 ** -ndigits
              (self.to_f / place).round * place
            end
          end

          if RUBY_VERSION < '2.4.0'
            refine ::Integer do
              include Method
            end

            def self.included(base)
              base.include Method
            end
          end
        end
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
polyfill-0.3.0	lib/polyfill/v2_4/integer/instance/round.rb