I finally figured out how to interpret and modernize some of the old J in Donald McIntyre's article on using Jacobi's method for finding eigenvalues. The modernized code is available from the article here: http://www.jsoftware.com/jwiki/DevonMcCormick/JacobiByMcIntyre .
-- Devon McCormick, CFA ^me^ at acm. org is my preferred e-mail ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm