"Ramana Kumar" wrote:
> Does anyone know of a Scheme tool for formatting numbers
> with the following (or similar) abilities:
You can try the (format) library in Nausicaa/Scheme. It is
incomplete, it is a development revision, and it has some
problems here and there, but it is working and you can take
it as a starting point. It is written for LIMY Schemes, but
I am sure you can easily take the bits needed to make it run
with Ikarus from a single library file.
Go here:
<http://github.com/marcomaggi/nausicaa/tree/master>
and browse the repository to get:
* scheme/src/libraries/format.sls
The library itself.
* scheme/src/libraries/nausicaa.ikarus.sls
The language under which (format) has been written.
* scheme/src/libraries/nausicaa/common.sls
A base library for (nausicaa).
* scheme/tests/test-format-lib.sps
* scheme/tests/test-format-round.sps
The main test file and a test file for auxiliary
functions.
* scheme/doc/nausicaa-scheme.texi
A big slab of documentation in Texinfo format. In it the
node "format" documents the (format) library. IIRC it is
out of sync with the library in some bits, but mostly up
to date.
* scheme/infrastructure/gpl-3.0.texiinc
* scheme/infrastructure/fdl-1.3.texiinc
Licence files included by "nausicaa-scheme.texi". You
need them only if you want to compile the Texinfo file
into HTML or Info or whatever.
The bits you have to take out of (nausicaa) and (nausicaa
common) are support for parameters, pretty-print, IIRC the
extensions of finite?, infinite? and nan? for complex
numbers (but I am not sure of these), and stuff like that.
I already decided that I will make (format) more
independent from (nausicaa) and that I will change its ugly
interface, but I cannot do it in the near future.
HTH
--
Marco Maggi
