Re: [sage-devel] Re: How does the ECL+Maxima combination work ?
On Wednesday, January 21, 2015 at 2:39:52 AM UTC-8, Snark wrote: Ah, ha! That helps. But, let's take the following code (extracted from src/sage/interfaces/maxima_lib.py) : from sage.libs.ecl import * ecl_eval((require 'maxima)) ecl_eval((in-package :maxima)) ecl_eval(#$load(abs_integrate)$) it gives me: RuntimeError: ECL says: THROW: The catch MACSYMA-QUIT is undefined. And obviously, maxima_lib.py doesn't suffer from this problem, because the code there executes quite frequently without this error. Apparently there is something different between what you do and what happens in maxima_lib.py. Indeed, there is more code in maxima_lib.py. Right below the (in-package :maxima) we have: (defvar *MAXIMA-LANG-SUBDIR* NIL) (set-locale-subdir) (set-pathnames) and then load works. Maxima needs more initialization than requiring the package. A large part of maxima was already written before the CL standard was made and before packages were introduced, so it has a lot of archaic bits to the code. It certainly was never designed to be used as a lisp library, so you need to jump through odd hoops to get it to work as such. It may also be possible that maxima does have a better initialization routine that has everything packaged in, but I wasn't able to find it (and reverse engineering what WAS needed took quite a bit of trial and error). Concerning the THROW: Maxima has its own error signalling mechanism that requires a guard on the stack to CATCH the THROWs. To put an appropriate catch in place, maxima_lib defines maxima-eval, which is hugely improved in: http://trac.sagemath.org/ticket/14308 I was fully expecting that ticket to be merged already, but apparently no-one cares about the issue there. It's still worth merging the much simpler implementation of maxima-eval, though. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] German help needed at trac #17556
Hello, I've got a ticket at, http://trac.sagemath.org/ticket/17556 that affects one test in, doc/de/thematische_anleitungen/sage_gymnasium.rst I don't speak German, and the fix is going to require a sentence or two of new/removed text. I offered one good fix and one lazy fix on the ticket, but other suggestions would also be appreciated. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
[sage-devel] Re: 10 year anniversary of Sage
Dear William and developers, I was just using Sage to help the (re-)creation of problems for my classes at this time Sage is making 10 years. Congratulations for the concept and working persistence that kept this project growing for the last 10 years. Thanks to all developers and contributors for making sage as it is now. Pedro On Tuesday, January 20, 2015 at 7:48:09 PM UTC, William wrote: Hi, If you look at http://wstein.org/sage_old/ you'll find the first few tarballs of Sage I ever released. The first one [1] has a README that starts: -- SAGE -- Software for Algebra and Geomtry Copyright (C) 2004 William Stein w...@math.harvard.edu javascript: Distributed under the terms of the GNU General Public License (GPL) See http://www.gnu.org/licenses/ -- This is the README.txt file for the source distribution of SAGE, version 0.1, 2005-01-23. ... I think this was the first-ever public release of Sage. I made it inspired by a conversation at the 2005 JMM with David Joyner, who saw me working on my private code there. Based on that date, we could say that Sage will be 10 years old this Friday.Alternatively, it seems the first tarball I posted has the date Feb 28, 2005. [1] http://wstein.org/sage_old/sage-2005-02-28-2112-src-0.1.tar -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
Re: [sage-devel] Re: How does the ECL+Maxima combination work ?
Hi, Le 19/01/2015 17:38, Nils Bruin a écrit : On Monday, January 19, 2015 at 8:22:15 AM UTC-8, Dima Pasechnik wrote: On 2015-01-19, Julien Puydt julien...@laposte.net javascript: wrote: Hi, I wanted to play with maxima-in-ecl to understand how it works, but failed: from reading sage's sources I thought I was supposed to use a MEVAL function, but it failed. Here is what I did: jpuydt@cauchy:~/sage-6.4.1$ ./sage -ecl ECL (Embeddable Common-Lisp) 13.5.1 (git:UNKNOWN) Copyright (C) 1984 Taiichi Yuasa and Masami Hagiya Copyright (C) 1993 Giuseppe Attardi Copyright (C) 2000 Juan J. Garcia-Ripoll ECL is free software, and you are welcome to redistribute it under certain conditions; see file 'Copyright' for details. Type :h for Help. Top level. (require 'maxima) ;;; Loading #P/home/jpuydt/sage-6.4.1/local/lib/ecl/maxima.fas ;;; Loading #P/home/jpuydt/sage-6.4.1/local/lib/ecl/sb-bsd-sockets.fas ;;; Loading #P/home/jpuydt/sage-6.4.1/local/lib/ecl/sockets.fas (SB-BSD-SOCKETS SOCKETS MAXIMA) here you need to go into the right namespace, or whatever it is called: (in-package :maxima) (meval 2+2) but I don't know how to compute 2+2, still :-)) The maxima parser is available via the reader macro. Normally it will produce a form that evaluates too, but if you quote it, you can prevent that from happening: (require `maxima) [...] (in-package :maxima) MAXIMA #$2+2$ 4 MAXIMA '#$x+5$ (MEVAL* '((MPLUS) $X 5)) MAXIMA (meval '((mplus) 2 2)) 4 Ah, ha! That helps. But, let's take the following code (extracted from src/sage/interfaces/maxima_lib.py) : from sage.libs.ecl import * ecl_eval((require 'maxima)) ecl_eval((in-package :maxima)) ecl_eval(#$load(abs_integrate)$) it gives me: RuntimeError: ECL says: THROW: The catch MACSYMA-QUIT is undefined. and if I type the same in sage -ecl: (require 'maxima) (in-package :maxima) #$load(abs_integrate)$ it also gives me the same error... So there's still something that eludes me in the ECL+Maxima pair... Snark in #sagemath -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
