From 48f5f5915b0c357b05a9dda2732470bf67ebd691 Mon Sep 17 00:00:00 2001 From: mrkn Date: Tue, 6 Dec 2016 13:40:31 +0000 Subject: array.c, enum.c: change sum algorithm * array.c (rb_ary_sum): change the algorithm to Kahan-Babuska balancing summation to be more precise. [Feature #12871] [ruby-core:77771] * enum.c (sum_iter, enum_sum): ditto. * test_array.rb, test_enum.rb: add an assertion for the above change. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57001 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- test/ruby/test_array.rb | 1 + 1 file changed, 1 insertion(+) (limited to 'test/ruby/test_array.rb') diff --git a/test/ruby/test_array.rb b/test/ruby/test_array.rb index 24a8eae346..5ecaaa3aa6 100644 --- a/test/ruby/test_array.rb +++ b/test/ruby/test_array.rb @@ -2821,6 +2821,7 @@ class TestArray < Test::Unit::TestCase assert_float_equal(large_number+(small_number*10), [large_number, *[small_number]*10].sum) assert_float_equal(large_number+(small_number*10), [large_number/1r, *[small_number]*10].sum) assert_float_equal(large_number+(small_number*11), [small_number, large_number/1r, *[small_number]*10].sum) + assert_float_equal(small_number, [large_number, small_number, -large_number].sum) assert_equal("abc", ["a", "b", "c"].sum("")) assert_equal([1, [2], 3], [[1], [[2]], [3]].sum([])) -- cgit v1.2.3