From cc80f139cdc2c7224afc496178d5c56a7f9cdd1c Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 4 Oct 2016 00:55:15 +0000
Subject: bigdecimal.c: more precision

* ext/bigdecimal/bigdecimal.c (BigDecimal_div2): need more room
  for precision to round.  [ruby-core:77475] [Bug #12805]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56336 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/bigdecimal/test_bigdecimal.rb | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'test/bigdecimal')

diff --git a/test/bigdecimal/test_bigdecimal.rb b/test/bigdecimal/test_bigdecimal.rb
index 4296b50c59..63a3e2747d 100644
--- a/test/bigdecimal/test_bigdecimal.rb
+++ b/test/bigdecimal/test_bigdecimal.rb
@@ -807,6 +807,12 @@ class TestBigDecimal < Test::Unit::TestCase
       BigDecimal.mode(BigDecimal::EXCEPTION_INFINITY, false)
       assert_equal(0, BigDecimal("0").div(BigDecimal("Infinity")))
     end
+
+    x = BigDecimal.new("1")
+    y = BigDecimal.new("0.22")
+    (2..20).each do |i|
+      assert_equal ("0."+"45"*(i/2)+"5"*(i%2)+"E1"), x.div(y, i).to_s, "#{i}"
+    end
   end
 
   def test_abs_bigdecimal
-- 
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