🚀 go-pugleaf

A number of useful packages and utilities have recently been added to the
REDUCE network library.  The largest of these comes from John Fitch at the
University of Bath who has supplied the CAMAL package for celestial
mechanics calculations.  This is an implementation in REDUCE of his
popular CAMAL system.  As he points out in the relevant document, however,
this package is significantly slower than the original assembly language
coded system.  There are five files in this package in the "series"
sub-library: camal.red, camal.tex, camal.bib, camal.tst and camal.log.

A number of useful utilities and patches have been supplied by Francis
Wright, a coauthor (with Malcolm Maccallum) of the highly recommended book
"Algebraic Computing with REDUCE" published last year by Oxford University
Press.  The patches are:

   intdf.red:    This supports derivatives in integrands that change the
		 variable of integration;

   intpatch.red: This provides for the integration of more fractional
		 powers;

   reimpart.red: This improves the way that the complex operators work on
		 manifestly real values.

These three patches will be merged into future releases of REDUCE.

In addition, the following utilities by Francis Wright are provided:

   save.red:     This utility provides commands for saving and displaying
		 interactive input and output;

   softsol.red:  This is an interface to the SOLVE package that provides
		 error numbers rather than a hard error when an error
		 condition is encountered.

Finally, on the basis of comments he received from Forum members, Richard
Liska has produced an improved version of his module for disk saving and
retrieving of expressions.  This version is now in the "util" library with
the name exprio.red.

Tony Hearn