[ https://issues.apache.org/jira/browse/ARROW-10234?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Praveen Kumar resolved ARROW-10234. ----------------------------------- Fix Version/s: 2.0.0 Resolution: Fixed Issue resolved by pull request 8398 [https://github.com/apache/arrow/pull/8398] > [C++][Gandiva] Fix logic of round() for floats/decimals in Gandiva > ------------------------------------------------------------------ > > Key: ARROW-10234 > URL: https://issues.apache.org/jira/browse/ARROW-10234 > Project: Apache Arrow > Issue Type: Bug > Components: C++ - Gandiva > Reporter: Sagnik Chakraborty > Assignee: Sagnik Chakraborty > Priority: Major > Labels: pull-request-available > Fix For: 2.0.0 > > Time Spent: 2h 50m > Remaining Estimate: 0h > > round() for floats/doubles is returning incorrect results for some edge > cases, like round(cast(1.55 as float), 1) gives 1.6, but it should be 1.5, > since the result after casting to float comes to 1.5499999523162842, due to > inaccurate representation of floating point numbers in memory. Removing an > intermediate explicit cast to float statement for a double value, which is > used in subsequent computations, minimises the error introduced due to the > incorrect representation. -- This message was sent by Atlassian Jira (v8.3.4#803005)