[Maxima] Adding new object types WAS: Operations on inf
raymond.toy at ericsson.com
Fri Mar 9 08:56:32 CST 2007
>>>>> "Stavros" == Stavros Macrakis <macrakis at alum.mit.edu> writes:
Stavros> 1. (*) text/plain ( ) text/html
Stavros> On 3/8/07, Barton Willis <willisb at unk.edu> wrote:
>> I've always hoped for a straightforward way to add new objects to
>> simplus and friends -- arrays, intervals, big oh, little oh, quad
>> precision floats, ... By straightforward, I mean a way to add new
>> objects without hacking simplus and friends.
Stavros> Let's use ((bigfloat simp interval) ...), ((bigfloat simp quadfloat) ...)
Stavros> etc. to represent new data types. We have the bigfloat package take care of
Stavros> dispatching. There are some places in Maxima which break the bigfloat
Stavros> abstraction (notably checking for sign or zero by looking inside), but we
Stavros> should be able to remove those pretty easily.
I'm guessing that Barton was thinking of something more CLOS-like. I
think it would fit in pretty well with number-like objects. It just
doesn't fit in very well with the rest of maxima.
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