Merge pull request #198 from bovi/add-compar-doc

Add documentation to Comparable

mrblib/compar.rb

+##
+# Comparable
+#
+# ISO 15.3.3
 module Comparable
-  # 15.3.3.2.1
+
+  ##
+  # Return true if +self+ is less
+  # than +other+. Otherwise return
+  # false.
+  #
+  # ISO 15.3.3.2.1
   def < other
     cmp = self <=> other
     if cmp.nil?
@@ -11,7 +21,12 @@ module Comparable
     end
   end
 
-  # 15.3.3.2.2
+  ##
+  # Return true if +self+ is less
+  # than or equal to +other+.
+  # Otherwise return false.
+  # 
+  # ISO 15.3.3.2.2
   def <= other
     cmp = self <=> other
     if cmp.nil?
@@ -23,7 +38,12 @@ module Comparable
     end
   end
 
-  # 15.3.3.2.3
+  ##
+  # Return true if +self+ is equal
+  # to +other+. Otherwise return
+  # false.
+  #
+  # ISO 15.3.3.2.3
   def == other
     cmp = self <=> other
     if cmp == 0
@@ -33,7 +53,12 @@ module Comparable
     end
   end
 
-  # 15.3.3.2.4
+  ##
+  # Return true if +self+ is greater
+  # than +other+. Otherwise return
+  # false.
+  #
+  # ISO 15.3.3.2.4
   def > other
     cmp = self <=> other
     if cmp.nil?
@@ -45,9 +70,14 @@ module Comparable
     end
   end
 
-  # 15.3.3.2.5
+  ##
+  # Return true if +self+ is greater
+  # than or equal to +other+.
+  # Otherwise return false.
+  #
+  # ISO 15.3.3.2.5
   def >= other
-     cmp = self <=> other
+    cmp = self <=> other
     if cmp.nil?
       false
     elsif cmp >= 0
@@ -57,8 +87,14 @@ module Comparable
     end
   end
 
-  # 15.3.3.2.6
-  def between?(min,max)
+  ##
+  # Return true if +self+ is greater 
+  # than or equal to +min+ and
+  # less than or equal to +max+.
+  # Otherwise return false.
+  #
+  # ISO 15.3.3.2.6
+  def between?(min, max)
     if self < min or self > max
       false
     else