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| author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-06-06 14:01:43 +0000 |
|---|---|---|
| committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-06-06 14:01:43 +0000 |
| commit | c995315153f7403636ec0d6119b7885668b32039 (patch) | |
| tree | f73f0aee5ae6ff2b100f76df7f2049014bf2bf98 /test/ruby/test_math.rb | |
| parent | 439e50789b2b49676c5108894d324c5d1ccebf1f (diff) | |
| download | ruby-c995315153f7403636ec0d6119b7885668b32039.tar.gz | |
math.c: adjust cbrt
* math.c (math_cbrt): refine the approximation result on boundary
values by an iteration of Newton-Raphson method.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63592 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/ruby/test_math.rb')
| -rw-r--r-- | test/ruby/test_math.rb | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/test/ruby/test_math.rb b/test/ruby/test_math.rb index f226287442..5cc12bcfeb 100644 --- a/test/ruby/test_math.rb +++ b/test/ruby/test_math.rb @@ -202,6 +202,7 @@ class TestMath < Test::Unit::TestCase check(3, Math.cbrt(27)) check(-0.1, Math.cbrt(-0.001)) assert_nothing_raised { assert_infinity(Math.cbrt(1.0/0)) } + assert_operator(Math.cbrt(1.0 - Float::EPSILON), :<=, 1.0) end def test_frexp |