From 8e4196fa402858cc561021579be3653b24ec6348 Mon Sep 17 00:00:00 2001
From: gogotanaka <mail@tanakakazuki.com>
Date: Sat, 8 Nov 2014 03:26:39 -0800
Subject: [PATCH 2/3] raise error when more than 3 args passed

---
 lib/cmath.rb | 17 ++++-------------
 1 file changed, 4 insertions(+), 13 deletions(-)

diff --git a/lib/cmath.rb b/lib/cmath.rb
index aee577c..4a670d7 100644
--- a/lib/cmath.rb
+++ b/lib/cmath.rb
@@ -66,20 +66,12 @@ module CMath
   # it will be the base of logarithm.
   #
   #   log(Complex(0,0)) #=> -Infinity+0.0i
-  def log(*args)
+  def log(z, b=E)
     begin
-      z, b = args
-      unless b.nil? || b.kind_of?(Numeric)
-        raise TypeError,  "Numeric Number required"
-      end
-      if z.real? and z >= 0 and (b.nil? or b >= 0)
-        log!(*args)
+      if z.real? && z >= 0 && b >= 0
+        log!(z, b)
       else
-        a = Complex(log!(z.abs), z.arg)
-        if b
-          a /= log(b)
-        end
-        a
+        Complex(log!(z.abs), z.arg) / log(b)
       end
     rescue NoMethodError
       handle_no_method_error
@@ -397,4 +389,3 @@ module CMath
   module_function :handle_no_method_error

 end
-
--
1.9.3 (Apple Git-50)