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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