Add Numeric#nan?, Numeric#finite? and Numeric#infinite?

opal · Oct 17, 2013 · c9138f4 · c9138f4
1 parent cae238d
commit c9138f4
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/corelib/numeric.rb b/corelib/numeric.rb
@@ -253,6 +253,22 @@ def size
     # Just a stub, JS is 32bit for bitwise ops though
     4
   end
+
+  def nan?
+    `isNaN(self)`
+  end
+
+  def finite?
+    `self == Infinity || self == -Infinity`
+  end
+
+  def infinite?
+    if `self == Infinity`
+      `+1`
+    elsif `self == -Infinity`
+      `-1`
+    end
+  end
 end
 
 Fixnum = Numeric