From 99f8f14d89308c17d8e9e53e03dd5ead6984e7fc Mon Sep 17 00:00:00 2001
From: mrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 10 Jul 2011 14:05:07 +0000
Subject: * ext/bigdecimal/bigdecimal.c (rmpd_power_by_big_decimal): fix  
 precision treatment errors. * test/bigdecimal/test_bigdecimal.rb: add tests
 for the above change.   fix precision treatment errors. *
 ext/bigdecimal/bigdecimal.c (BigDecimal_power): precision argument   should
 be optional for its compatibility.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32500 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/bigdecimal/test_bigdecimal.rb | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'test/bigdecimal')

diff --git a/test/bigdecimal/test_bigdecimal.rb b/test/bigdecimal/test_bigdecimal.rb
index 9bd068bfe5..96211a09c7 100644
--- a/test/bigdecimal/test_bigdecimal.rb
+++ b/test/bigdecimal/test_bigdecimal.rb
@@ -964,6 +964,20 @@ class TestBigDecimal < Test::Unit::TestCase
     end
   end
 
+  def test_power_without_prec
+    pi  = BigDecimal("3.14159265358979323846264338327950288419716939937511")
+    e   = BigDecimal("2.71828182845904523536028747135266249775724709369996")
+    pow = BigDecimal("22.4591577183610454734271522045437350275893151339967843873233068")
+    assert_equal(pow, pi.power(e))
+  end
+
+  def test_power_with_prec
+    pi  = BigDecimal("3.14159265358979323846264338327950288419716939937511")
+    e   = BigDecimal("2.71828182845904523536028747135266249775724709369996")
+    pow = BigDecimal("22.459157718361045473")
+    assert_equal(pow, pi.power(e, 20))
+  end
+
   def test_limit
     BigDecimal.limit(1)
     x = BigDecimal.new("3")
-- 
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