diff options
| author | mrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-07-26 15:48:25 +0000 |
|---|---|---|
| committer | mrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-07-26 15:48:25 +0000 |
| commit | 079fb8d4c369cfc7d450d6e4d02b112596dcb5ee (patch) | |
| tree | 96248be4d9cb5747abd8dde11d35c1cde1b5f40b /test/bigdecimal | |
| parent | 2fd6b26620b1f9e25f204f05524b8086f7c8d23e (diff) | |
* ext/bigdecimal/lib/bigdecimal/util.rb (Float#to_d): modified for
specifying precision. fixes #5098. [ruby-dev:44210]
* test/bigdecimal/test_bigdecimal_util.rb: add test for the above
change.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32679 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/bigdecimal')
| -rw-r--r-- | test/bigdecimal/test_bigdecimal_util.rb | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/bigdecimal/test_bigdecimal_util.rb b/test/bigdecimal/test_bigdecimal_util.rb index 5f03b734cf..87b4f20e99 100644 --- a/test/bigdecimal/test_bigdecimal_util.rb +++ b/test/bigdecimal/test_bigdecimal_util.rb @@ -12,4 +12,17 @@ class TestBigDecimalUtil < Test::Unit::TestCase assert_equal(BigDecimal(1), 1.to_d) assert_equal(BigDecimal(2<<100), (2<<100).to_d) end + + def test_Float_to_d_without_precision + delta = 1.0/10**(Float::DIG + 1) + assert_in_delta(BigDecimal(0.5, Float::DIG+1), 0.5.to_d, delta) + assert_in_delta(BigDecimal(355.0/113.0, Float::DIG+1), (355.0/113.0).to_d, delta) + end + + def test_Float_to_d_with_precision + digits = 5 + delta = 1.0/10**(digits) + assert_in_delta(BigDecimal(0.5, 5), 0.5.to_d(digits), delta) + assert_in_delta(BigDecimal(355.0/113.0, 5), (355.0/113.0).to_d(digits), delta) + end end |