diff options
| author | mrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-03-23 12:41:00 +0000 |
|---|---|---|
| committer | mrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-03-23 12:41:00 +0000 |
| commit | e324d29e2b5f78c3b38b293e19976205d6fcdb7d (patch) | |
| tree | 32cb85a9607db1a3c17d8b4da54e090ede05b867 /test | |
| parent | 5396d8a1ab52b4da4f5199109472fe7f8ea43085 (diff) | |
* enum.c (ary_inject_op): Use Kahan's compensated summation algorithm
for summing up float values.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54237 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test')
| -rw-r--r-- | test/ruby/test_enum.rb | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/test/ruby/test_enum.rb b/test/ruby/test_enum.rb index 97730f919f..ba973e2d48 100644 --- a/test/ruby/test_enum.rb +++ b/test/ruby/test_enum.rb @@ -217,6 +217,13 @@ class TestEnumerable < Test::Unit::TestCase assert_float_equal(10.0, [3.0, 5].inject(2.0, :+)) assert_float_equal((FIXNUM_MAX+1).to_f, [0.0, FIXNUM_MAX+1].inject(:+)) assert_equal(2.0+3.0i, [2.0, 3.0i].inject(:+)) + + large_number = 100000000 + small_number = 1e-9 + until (large_number + small_number) == large_number + small_number /= 10 + end + assert_equal(large_number+(small_number*10), [large_number, *[small_number]*10].inject(:+)) end def test_inject_array_plus_redefined |