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date.rb
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# frozen_string_literal: true # date.rb: Written by Tadayoshi Funaba 1998-2011 require 'date_core' class Date VERSION = '3.2.2' # :nodoc: def infinite? false end class Infinity < Numeric # :nodoc: def initialize(d=1) @d = d <=> 0 end def d() @d end protected :d def zero?() false end def finite?() false end def infinite?() d.nonzero? end def nan?() d.zero? end def abs() self.class.new end def -@() self.class.new(-d) end def +@() self.class.new(+d) end def <=>(other) case other when Infinity; return d <=> other.d when Float::INFINITY; return d <=> 1 when -Float::INFINITY; return d <=> -1 when Numeric; return d else begin l, r = other.coerce(self) return l <=> r rescue NoMethodError end end nil end def coerce(other) case other when Numeric; return -d, d else super end end def to_f return 0 if @d == 0 if @d > 0 Float::INFINITY else -Float::INFINITY end end end end