11 years, 138 days
McMaster University
Hamilton, Ontario, Canada

These are Posts that have been published by JacquesC

Mike Kucera and I are happy to announce the availability of MapleMIX, a partial evaluator for Maple. Partial evaluation (PE) is a program transformation technique that uses a subset of the inputs to a program to generate a specialized version of the program that will then accept the rest of the inputs. With PE it is possible to write algorithms in a highly general and abstracted form, and then automatically extract optimized versions of the algorithm specialized for certain inputs.

Some time ago, I had a blog post about a compendium of inequalities,  Some people took a look and found problems in that paper.  So I took the time to track down the author and point him to the mapleprimes page.

He got back to me some time later, thanking me for pointing out the errors.  But in the same email, he pointed me to 2 other papers, http://xxx.lanl.gov/abs/0707.2098 and http://xxx.lanl.gov/abs/0707.2584 which contain (interesting?) conjectures which seem amenable to Maple exploration. I meant to look at these myself, but it has now become clear that I won't for quite some time yet. Perhaps these will pique the curiosity of some MaplePrimes member.

Could MaplePrimes be made a little more robust?  It seems that roughly once a month I get a Drupal error all weekend instead of access to MaplePrimes.  I frequently have more time on the weekend to answer some questions, so it is the community that loses when the site is down... 

This has now happened frequently enough that clearly there is a systemic problem in the infrastructure, and it would be nice to know that it is being investigated and fixed.

IEEE 754-2008

September 22 2008 JacquesC 2321

It is not every day that a venerable and wide-ranging standard such as IEEE-754 gets an update!  IEEE 754 dates from 1985 (that was the year it was approved, the actual work started years before).  Wikipedia has a nice summary of the changes.

Of course now inquiring minds want to know: will Maple 13 by IEEE-754-2008 compliant? [For all I know, it might already be most of the way there, with only minor tweaks necessary].

GMP is now deeply integrated into Maple - which I consider to be a good thing.  But it appears that compiler writers are doing a bad job (see the first paragraph on GMP's home page)  In other words, unless you carefully make sure that you have compile GMP properly, it is entirely possible that you end up with a buggy library.  Very scary stuff.

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