summaryrefslogtreecommitdiff
path: root/test/test_cmath.rb
diff options
context:
space:
mode:
authormrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2011-06-13 05:36:59 +0000
committermrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2011-06-13 05:36:59 +0000
commite6bea8978c9ec6b69a546f68416dd87dacac8b2a (patch)
treea32b807a7dd1fee93317528a5a4834a74fe135c0 /test/test_cmath.rb
parentda923d2b1f6de3ba2947c83cf89c6affd85cc0d9 (diff)
* lib/cmath.rb (CMath.cbrt): returns the principal value of the cube
root of the argument. fix #3676 * test/test_cmath.rb (test_cbrt_returns_principal_value_of_cube_root): test for the above change. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32047 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/test_cmath.rb')
-rw-r--r--test/test_cmath.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/test/test_cmath.rb b/test/test_cmath.rb
index 46a357f..4f85ec3 100644
--- a/test/test_cmath.rb
+++ b/test/test_cmath.rb
@@ -5,4 +5,8 @@ class TestCMath < Test::Unit::TestCase
def test_sqrt
assert_equal CMath.sqrt(1.0.i), CMath.sqrt(1.i), '[ruby-core:31672]'
end
+
+ def test_cbrt_returns_principal_value_of_cube_root
+ assert_equal CMath.cbrt(-8), (-8)**(1.0/3), '#3676'
+ end
end