- A factor of 2 isn't very exciting. Scan the factors quoted in the release notes: http://www.jsoftware.com/books/help/release/contents.htm
- Special code is more likely for an expression which is tacit and is the simplest possible. For example: fn"1/~ and (f . g |:) ----- Original Message ----- From: Fraser Jackson <[EMAIL PROTECTED]> Date: Wednesday, August 30, 2006 8:38 pm Subject: [Jprogramming] Symmetric inner and outer products > There are many problems where for a matrix a either the following > > a fn"1 1 / a > > or > > > a f . g |: a > > generate a symmetric matrix. > > > I could well do with the saving of half the time on a computation. > > 1. Has anyone good suggestions for handling this? > 2. Isn't this such a common problem that some way of telling > the > interpreter to only do one triangle should be constructed? ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
