round-down

* numeric.c (round_half_down, int_round_half_down): support
  round-down mode.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56897 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2016-11-25 06:28:00 +00:00
parent b6d10b6c37
commit 631dde2572
7 changed files with 134 additions and 10 deletions

View file

@ -597,12 +597,12 @@ class Rational_Test < Test::Unit::TestCase
end
def test_trunc
[[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
[[Rational(13, 5), [ 2, 3, 2, 3, 3, 3, 3]], # 2.6
[Rational(5, 2), [ 2, 3, 2, 2, 2, 3, 2]], # 2.5
[Rational(12, 5), [ 2, 3, 2, 2, 2, 2, 2]], # 2.4
[Rational(-12,5), [-3, -2, -2, -2, -2, -2, -2]], # -2.4
[Rational(-5, 2), [-3, -2, -2, -2, -2, -3, -2]], # -2.5
[Rational(-13, 5), [-3, -2, -2, -3, -3, -3, -3]], # -2.6
].each do |i, a|
s = proc {i.inspect}
assert_equal(a[0], i.floor, s)
@ -611,6 +611,7 @@ class Rational_Test < Test::Unit::TestCase
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)
assert_equal(a[6], i.round(half: :down), s)
end
end