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author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-11-05 09:49:39 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-11-05 09:49:39 +0000 |
commit | 73b3a8497c97cb6a9ed76cc52733a98f7791c9b0 (patch) | |
tree | d209f0b546e45cb8d8fa7fc2bbbb5044e53e2c8f /test/ruby/test_rational.rb | |
parent | 5710defbe621766796d973b9ef6451a94d6d7eff (diff) | |
download | ruby-73b3a8497c97cb6a9ed76cc52733a98f7791c9b0.tar.gz |
numeric.c: round to nearest even
* numeric.c (flo_round, int_round): support round-to-nearest-even
semantics of IEEE 754 to match sprintf behavior, and add `half:`
optional keyword argument for the old behavior.
[ruby-core:76273] [Bug #12548]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56590 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/ruby/test_rational.rb')
-rw-r--r-- | test/ruby/test_rational.rb | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/test/ruby/test_rational.rb b/test/ruby/test_rational.rb index 387f4121cf..d65c292970 100644 --- a/test/ruby/test_rational.rb +++ b/test/ruby/test_rational.rb @@ -597,17 +597,20 @@ class Rational_Test < Test::Unit::TestCase end def test_trunc - [[Rational(13, 5), [ 2, 3, 2, 3]], # 2.6 - [Rational(5, 2), [ 2, 3, 2, 3]], # 2.5 - [Rational(12, 5), [ 2, 3, 2, 2]], # 2.4 - [Rational(-12,5), [-3, -2, -2, -2]], # -2.4 - [Rational(-5, 2), [-3, -2, -2, -3]], # -2.5 - [Rational(-13, 5), [-3, -2, -2, -3]], # -2.6 + [[Rational(13, 5), [ 2, 3, 2, 3, 3, 3]], # 2.6 + [Rational(5, 2), [ 2, 3, 2, 2, 2, 3]], # 2.5 + [Rational(12, 5), [ 2, 3, 2, 2, 2, 2]], # 2.4 + [Rational(-12,5), [-3, -2, -2, -2, -2, -2]], # -2.4 + [Rational(-5, 2), [-3, -2, -2, -2, -2, -3]], # -2.5 + [Rational(-13, 5), [-3, -2, -2, -3, -3, -3]], # -2.6 ].each do |i, a| - assert_equal(a[0], i.floor) - assert_equal(a[1], i.ceil) - assert_equal(a[2], i.truncate) - assert_equal(a[3], i.round) + s = proc {i.inspect} + assert_equal(a[0], i.floor, s) + assert_equal(a[1], i.ceil, s) + assert_equal(a[2], i.truncate, s) + assert_equal(a[3], i.round, s) + assert_equal(a[4], i.round(half: :even), s) + assert_equal(a[5], i.round(half: :up), s) end end |