This is cafe-calc, a fork of gnome-calc, the calculator application
that was previously in the OpenWindows Deskset of the Solaris 8
operating system.
It incorporates a multiple precision arithmetic packages based on the work of Professor Richard Brent, who has also kindly given me permission to make it available.
There is a single graphics driver for Ctk3 included with this release.
The manual pages also describe how to use cafe-calc in detail.
Calctool was a project I worked on before I joined the OpenWindows DeskSet engineering group at Sun. It was originally released to comp.sources.unix in the late 1980's, and worked with many different graphics packages including SunView, X11, Xview, NeWS and MGR. There was also a version that worked on dumb tty terminals.
It used a double-precision maths library that was a combination of the work of Fred Fish and various routines that were in the BSD 4.3 maths library.
A lot of people in the community provided feedback in the form of comments, bug reports and fixes. In 1990, I started working in the DeskSet engineering group. I was working for Sun Microsystems in Australia at the time, (having moved there from England in 1983).
I searched around looking for multiple precision maths libraries and found a package called MP written in FORTRAN by Richard Brent. I converted it to C, adjusted the glue between the resultant code and the calctool code, and this went on to be the basis of the calculator that was in the OpenWindows DeskSet. I also added scientific, financial and logical modes. This calctool was also the basis of the dtcalc application that is a part of CDE (albeit I had nothing to do with that).
With its inclusion in the CAFE CVS repository, it was renamed to
cafe-calc.
More recently, Sami Pietila provided arithmetic precedence support and Robert Ancell converted the UI to use Glade.
See the AUTHORS file.
Suggestions for further improvement would be most welcome, plus bug reports and comments.
The Cafe Team.