diff options
author | naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-11-22 01:47:35 +0000 |
---|---|---|
committer | naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-11-22 01:47:35 +0000 |
commit | 033244c1b2b23c3f70a2a7c5cbdef570fdb9220e (patch) | |
tree | 08992e23607b57fae69487ef42c8f761b00d6d65 /test/ruby/test_float.rb | |
parent | 4e29a1a8fd69e8f13dbfacdbb897fc378ac0ad4b (diff) |
* numeric.c (ruby_float_step): improve floating point calculations.
[ruby-core:35753] [Bug #4576]
* numeric.c (ruby_float_step): correct the error of floating point
numbers on the excluding case.
patched by Masahiro Tanaka [ruby-core:39608]
* numeric.c (ruby_float_step): use the end value when the current
value is greater than or equal to the end value.
patched by Akira Tanaka [ruby-core:39612]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33811 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/ruby/test_float.rb')
-rw-r--r-- | test/ruby/test_float.rb | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/test/ruby/test_float.rb b/test/ruby/test_float.rb index e77b9e62e0..d16384898d 100644 --- a/test/ruby/test_float.rb +++ b/test/ruby/test_float.rb @@ -508,4 +508,33 @@ class TestFloat < Test::Unit::TestCase sleep(0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1+0.1) end end + + def test_step + 1000.times do + a = rand + b = a+rand*1000 + s = (b - a) / 10 + assert_equal(11, (a..b).step(s).to_a.length) + end + + (1.0..12.7).step(1.3).each do |n| + assert_operator(n, :<=, 12.7) + end + end + + def test_step_excl + 1000.times do + a = rand + b = a+rand*1000 + s = (b - a) / 10 + assert_equal(10, (a...b).step(s).to_a.length) + end + + assert_equal([1.0, 2.9, 4.8, 6.699999999999999], (1.0...6.8).step(1.9).to_a) + + e = 1+1E-12 + (1.0 ... e).step(1E-16) do |n| + assert_operator(n, :<=, e) + end + end end |