[jira] [Created] (GROOVY-7652) Float/Double trunc methods round down for negative values

["John Wagenleitner (JIRA)" <ji...@apache.org>]

John Wagenleitner created GROOVY-7652:
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             Summary: Float/Double trunc methods round down for negative values
                 Key: GROOVY-7652
                 URL: https://issues.apache.org/jira/browse/GROOVY-7652
             Project: Groovy
          Issue Type: Bug
          Components: groovy-jdk
    Affects Versions: 2.4.5
            Reporter: John Wagenleitner
            Priority: Minor


The {{trunc}} methods on Float/Double use the {{Math.floor}} method for all values, however for negative values this causing rounding down.  I think for negative values {{Math.ceil}} needs to be used.

Here are some asserts to show the rounding:

{code}
Float f = -123.739f
Double d = -123.739d

assert -123f == f.trunc() // fails: -124
assert -123d == d.trunc() // fails: -124

assert​ -123.73f == f.trunc(2)​ // fails: -123.74
assert -123.73d == d.trunc(2) // fails: -123.73​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​
{code}



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