* math.c (math_log): update document to mention second optional

argument for logarithm base.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@11761 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Fri Feb 16 19:24:22 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* math.c (math_log): update document to mention second optional
+	  argument for logarithm base. 
+
 Fri Feb 16 19:19:21 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* parse.y (mrhs): need to append by arg_append().

math.c

@@ -305,8 +305,11 @@ math_exp(VALUE obj, VALUE x)
 /*
  *  call-seq:
  *     Math.log(numeric)    => float
+ *     Math.log(num,base)   => float
  *  
  *  Returns the natural logarithm of <i>numeric</i>.
+ *  If additional second argument is given, it will be the base
+ *  of logarithm.
  */
 
 static VALUE