1 files changed, 61 insertions, 0 deletions
diff --git a/ruby_1_9_3/ext/date/lib/date.rb b/ruby_1_9_3/ext/date/lib/date.rb
new file mode 100644
index 0000000000..d235d76e6f
--- /dev/null
+++ b/ruby_1_9_3/ext/date/lib/date.rb
@@ -0,0 +1,61 @@
+# date.rb: Written by Tadayoshi Funaba 1998-2011
+
+require 'date_core'
+require 'date/format'
+
+class Date
+
+  class Infinity < Numeric # :nodoc:
+
+    include Comparable
+
+    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 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