* ext/bigdecimal/lib/bigdecimal/util.rb (Float#to_d): fix the number

of figures.  Patch by Vipul A M <vipulnsward@gmail.com>.
  https://github.com/ruby/ruby/pull/323  fix GH-323

* test/bigdecimal/test_bigdecimal_util.rb: fix for the above change.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41058 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,11 @@
+Tue Jun  4 15:30:00 2013  Kenta Murata  <mrkn@cookpad.com>
+
+	* ext/bigdecimal/lib/bigdecimal/util.rb (Float#to_d): fix the number
+	  of figures.  Patch by Vipul A M <vipulnsward@gmail.com>.
+	  https://github.com/ruby/ruby/pull/323  fix GH-323
+
+	* test/bigdecimal/test_bigdecimal_util.rb: fix for the above change.
+
 Tue Jun  4 00:44:27 2013  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
 
 	* test/fileutils/test_fileutils.rb (TestFileUtils#test_mkdir): add

ext/bigdecimal/lib/bigdecimal/util.rb

@@ -28,7 +28,7 @@ class Float < Numeric
   #     # => #<BigDecimal:1dc69e0,'0.5E0',9(18)>
   #
   def to_d(precision=nil)
-    BigDecimal(self, precision || Float::DIG+1)
+    BigDecimal(self, precision || Float::DIG)
   end
 end
 

test/bigdecimal/test_bigdecimal_util.rb

@@ -14,9 +14,10 @@ class TestBigDecimalUtil < Test::Unit::TestCase
   end
 
   def test_Float_to_d_without_precision
-    delta = 1.0/10**(Float::DIG + 1)
+    delta = 1.0/10**(Float::DIG)
-    assert_in_delta(BigDecimal(0.5, Float::DIG+1), 0.5.to_d, delta)
+    assert_in_delta(BigDecimal(0.5, Float::DIG), 0.5.to_d, delta)
-    assert_in_delta(BigDecimal(355.0/113.0, Float::DIG+1), (355.0/113.0).to_d, delta)
+    assert_in_delta(BigDecimal(355.0/113.0, Float::DIG), (355.0/113.0).to_d, delta)
+    assert_equal(9.05.to_d.to_s('F'), "9.05")
   end
 
   def test_Float_to_d_with_precision