From 092c647cb70af77b431f00c83126f93b0364857b Mon Sep 17 00:00:00 2001
From: akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 26 Aug 2014 11:48:21 +0000
Subject: * time.c (rb_time_unmagnify_to_float): Avoid double rounding.  
 Reported by Tsuyoshi Sawada.   https://bugs.ruby-lang.org/issues/10135#note-1

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47289 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_time.rb | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'test/ruby/test_time.rb')

diff --git a/test/ruby/test_time.rb b/test/ruby/test_time.rb
index bf78bbf8cb..399242e4b7 100644
--- a/test/ruby/test_time.rb
+++ b/test/ruby/test_time.rb
@@ -423,6 +423,12 @@ class TestTime < Test::Unit::TestCase
     assert_equal(946684800.0, t2000.to_f)
   end
 
+  def test_to_f_accuracy
+    # https://bugs.ruby-lang.org/issues/10135#note-1
+    f = 1381089302.195
+    assert_equal(f, Time.at(f).to_f, "[ruby-core:64373] [Bug #10135] note-1")
+  end
+
   def test_cmp
     t2000 = get_t2000
     assert_equal(-1, t2000 <=> Time.gm(2001))
-- 
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