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------- Additional comments from [EMAIL PROTECTED] Wed Oct 19 15:02:19 -0700 2005 ------- I have a calculation method in the paper 'Algorithms with guarenteed error bounds for the Error Function and Complementary Error Function - Walter Kramer and Frithjof Blomquist', read it here http://www.math.uni-wuppertal.de/org/WRST/preprints/prep_00_2.pdf Assuming that the results given by Gnumeric are correct then these algorithms match to better than 8 significant figures for -26.5<x<26.5 Note that there appears to be an error in the published algorithm for x>6 with a factor of 1/sqrt(pi) missing, in fact even with this correction extending the algorithm given for 2.2<x<6 to 2.2<x<26.5 gives a much better result at all points than the published algoritm The attached spreadsheet includes user functions myerf(x) and myerfc(x)based on the above and comparison with the Gnumeric results --------------------------------------------------------------------- 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]
