build

# File activesupport/lib/active_support/duration.rb, line 189
      def build(value)
        unless value.is_a?(::Numeric)
          raise TypeError, "can't build an #{self.name} from a #{value.class.name}"
        end

        parts = {}
        remainder_sign = value <=> 0
        remainder = value.round(9).abs
        variable = false

        PARTS.each do |part|
          unless part == :seconds
            part_in_seconds = PARTS_IN_SECONDS[part]
            parts[part] = remainder.div(part_in_seconds) * remainder_sign
            remainder = part_in_seconds

            unless parts[part].zero?
              variable ||= VARIABLE_PARTS.include?(part)
            end
          end
        end unless value == 0

        parts[:seconds] = remainder * remainder_sign

        new(value, parts, variable)
      end