* rational.c: Added documentation for rational literal.

[Bug #11075][fix GH-885][ci skip] Patch by @shishir127

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50406 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Thu Apr 30 17:02:33 2015  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
+
+	* rational.c: Added documentation for rational literal.
+	  [Bug #11075][fix GH-885][ci skip] Patch by @shishir127
+
 Thu Apr 30 16:39:44 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ext/socket/ipsocket.c (init_inetsock_internal): preserve errno

rational.c

@@ -2465,13 +2465,14 @@ nurat_s_convert(int argc, VALUE *argv, VALUE klass)
  * a/b (b>0).  Where a is numerator and b is denominator.  Integer a
  * equals rational a/1 mathematically.
  *
- * In ruby, you can create rational object with Rational, to_r or
- * rationalize method.  The return values will be irreducible.
+ * In ruby, you can create rational object with Rational, to_r, 
+ * rationalize method or suffixing r to a literal.  The return values will be irreducible.
  *
  *    Rational(1)      #=> (1/1)
  *    Rational(2, 3)   #=> (2/3)
  *    Rational(4, -6)  #=> (-2/3)
  *    3.to_r           #=> (3/1)
+ *    2/3r             #=> (2/3)
  *
  * You can also create rational object from floating-point numbers or
  * strings.