To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=97468 Issue #|97468 Summary|improve accuracy of ATANH, FISHER and FISHERINV Component|Spreadsheet Version|DEV300m36 Platform|PC URL| OS/Version|Windows XP Status|NEW Status whiteboard| Keywords| Resolution| Issue type|PATCH Priority|P3 Subcomponent|code Assigned to|er Reported by|regina
------- Additional comments from [email protected] Sun Dec 21 22:01:32 +0000 2008 ------- The current implementation of ATANH is not accurate for arguments near zero, see the attached test document, tab 'critical_values'. I changed the implementation to use the function atanh which is provided in issue 97467. Mathematically FISHER and ATANH are indentical. The current implementation uses the same insufficient algorithm than ATANH. I have changed it, to use the new function atanh too. Mathematically FISHERINV and TANH are indentical. But the current implementation uses an own, insufficient algorithm. I have changed it, to use the build-in function tanh, which is accurate. --------------------------------------------------------------------- Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
