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There's news...
by Richard B. Kreckel 28 Feb '01

28 Feb '01

...on <http://www.ginac.de/News.html>. In short: 0.7.3 is out. Please do hammer on it! Luck -richy. -- Richard Kreckel <Richard.Kreckel(a)Uni-Mainz.DE> <http://wwwthep.physik.uni-mainz.de/~kreckel/> - To UNSUBSCRIBE, email to ginac-list(a)ginac.de with a subject of "unsubscribe".

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configure problem
by richard noel fell 18 Feb '01

18 Feb '01

I am attempting to install ginac on redhat 7.0. First step, get cln-1.1, and unzip, untar, etc. This resulted in a directory cln-1.1 being created. From there, I ran ./configure, make, make check and make install. Everything seemed to go fine since there were no error messages. Next step. Go to my GiNac-0.7.1 directory and run ./configure. Here is the relevant error message. <snip lots of stuff> checking for cln-config... /usr/local/bin/cln-config checking for CLN - version >= 1.1.0... no *** Could not run CLN test program, checking why... *** The test program compiled, but did not run. This usually means *** that the run-time linker is not finding CLN or finding the wrong *** version of CLN. If it is not finding CLN, you'll need to set your *** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point *** to the installed location Also, make sure you have run ldconfig if that *** is required on your system. <snip more stuff> **** The following problems have been detected by configure. **** Please check the messages below before running "make". **** (see the section 'Common Problems' in the INSTALL file) ** No suitable installed version of CLN could be found. Chances are a most naive error on my part. From the error messages, it appears that the configure script is not looking in the correct directory(ies). And since I got cln from its web site, I assume it is the appropriate version. Perhaps I am wrong? Any help is greatly appreciated. Thanks, Dick Fell - To UNSUBSCRIBE, email to ginac-list(a)ginac.de with a subject of "unsubscribe".

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Just another release
by Richard B. Kreckel 17 Feb '01

17 Feb '01

This is to inform you that version 0.7.2 went out a couple of seconds ago. Q: Is it worth the upgrade from 0.7.1? A: Not unless you are doing some serious stuff with power series expansion. Q: What's going to happen next? A: A major cleanup regarding all things that do not compute is going on. This might also include a more convenient syntax for matrix operations and such things. Q: What do you guys in your spare time? A: Spare time? What's spare time? Q: Will this new version have effects on my sex life? A: Again, if you are doing serious stuff with power series, then it might very well have some effects. Hunting down bugs late at night is known to disturb your sanity. We just did that for you... luck -richy. - To UNSUBSCRIBE, email to ginac-list(a)ginac.de with a subject of "unsubscribe".

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indexed objects
by Benedikt Plümper 16 Feb '01

16 Feb '01

Hi everybody! I tried to figer out how to use the classes of indices and indexed objects built in into GiNaC but to be honest I failed. Unfortunately there's nothing about this in the tutorial. Is there any example available? I could initialize color or lorentzvectors or their indices but I don't know how to handle scalar products or simplify a chain of color objects, etc. Thanks for any help! Benedikt - To UNSUBSCRIBE, email to ginac-list(a)ginac.de with a subject of "unsubscribe".

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Yesterday it was late...
by Richard B. Kreckel 12 Feb '01

12 Feb '01

...which is why the announcement for version 0.7.1 didn't go out. It's to be found on the usual places. It is mainly a bug-fix release, but some of the stuff may represent a heavy improvement. In particular, all those folks who were having this or that particular algebraic problem since 0.7.0, please see if it's been solved. Luck -richy. PS: By the way, this is the second 7 February release... -- Richard Kreckel <Richard.Kreckel(a)Uni-Mainz.DE> <http://wwwthep.physik.uni-mainz.de/~kreckel/> - To UNSUBSCRIBE, email to ginac-list(a)ginac.de with a subject of "unsubscribe".

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function representation in ginac
by Roland Richter 01 Feb '01

01 Feb '01

Dear all, I recently had a look at the ginac 'function' class and at the corresponding REGISTER_FUNCTION mechanism. (background: I want to use ginac to represent fuzzy membership functions, i.e. essentially functions R -> [0,1]). Newbie question: Why was the design made as it is? For instance, why are all functions stored in a vector<function_options>, instead of deriving them from class function? Sure, when dealing with functions like exp, sin, ..., it is clear that there is just *one* instance of each such function. (Singleton pattern?) But how to deal with parametrized functions when parameters are specified at runtime? For instance, it would be nice to implement splines s.t. it is possible to specify two coordinates (x1,y1), (x2,y2) s.t. spline(x1) = y1, spline(x2) = y2, and first derivates are 0 at x1 and x2 ... Does that fit into the framework, too? Any hints and comments are appreciated, - Roland - To UNSUBSCRIBE, email to ginac-list(a)ginac.de with a subject of "unsubscribe".

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cln's gmp
by Tilman Utz 16 Jan '01

16 Jan '01

Hi all, I finally suceeded porting cln and Ginac to win32, but just without gmp and ginsh. What disadvantages do I have to exspect from that (especially from the missing of gmp) regards Tilman Utz - To UNSUBSCRIBE, email to ginac-list(a)ginac.de with a subject of "unsubscribe".

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RE: cln/ginac under win32
by Billinghurst, David (CRTS) 15 Jan '01

15 Jan '01

I have built and tested latest cln and GiNaC on NT4 using cygwin. Not quite what you wanted, but .. Get latest gmp. configure; make; install cln-1.1 needed a couple of tweaks to configure and install correctly. All the set up is on another computer. From memory: * the include and library paths for gmp needed to be set to /usr/local, * a directory or two needed to be created to build with srcdir != builddir GiNaC then configured and built without problem. +++++++++++++++++++++++++++++++++++++++++ (Mr) David Billinghurst Comalco Research Centre PO Box 316, Thomastown, Vic, Australia, 3074 Phone: +61 3 9469 0642 FAX: +61 3 9462 2700 Email: David.Billinghurst(a)riotinto.com > -----Original Message----- > From: Roland Richter [SMTP:roland@flll.uni-linz.ac.at] > Sent: Monday, 15 January 2001 20:32 > To: Tilman Utz > Cc: ginac-list(a)zino.Physik.Uni-Mainz.DE > Subject: cln/ginac under win32 > > > Hi Tilman, > > I just found out that there seems to be a possibility > to use cln/ginac under win32. > Please, can you (or anyone else listening to the list) tell me > > + what to do (and how long it will take) > + whether there are any files etc. downloadable anywhere > > in order to get ginac running under win (preferably without > the cygwin-dll, i.e. in the way you described in your mail.) > > Hopefully, that's another step to convince the "Skip C++, > use Mathematica/Maple/whatever instead" people around here ;-) > > > - Roland > > > Tilman Utz wrote: > > > > "Richard B. Kreckel" schrieb: > > > > > Actually I don't see what the problem is with getting things to work > on > > > win32. I was under the assumption that it had already been ported for > > > Cygwin by David Billinghurst. > > > > Yes, but there was still a reliance on the cygwin-dll which provides the > posix > > background. With the lib, I built now I'm able to produce executables > _totally_ > > independent of any third party dll's (Someone did that already with cln > 1.0 as I > > discovered a couple of hours before, but I didn't check out wheher his > patch > > works on 1.0.3, too) > - > To UNSUBSCRIBE, email to ginac-list(a)ginac.de with a subject of > "unsubscribe". - To UNSUBSCRIBE, email to ginac-list(a)ginac.de with a subject of "unsubscribe".

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Re: cln 1.1 does not compile with -fno-exceptions?
by Roland 15 Jan '01

15 Jan '01

> > When adding the -fno-exceptions flag to CXXFLAGS, as recommended > > in the INSTALL file, everything compiled fine, but then the test > > (cln-1.1/tests/exam) results in a seg fault. > > Interesting. Could you please send me the output of ld -v and gcc -v? > Sorry, no SuSE 7.0 around. I tried it once again, with the same result; what I did was CXXFLAGS="-fno-exceptions" ./configure make make check resulting in [-snip-] cd tests; make check make[1]: Entering directory `/home/roland/tmp/cln-1.1/tests' ./exam make[1]: *** [check] Segmentation fault [-snip-] These are kernel, gcc and ld versions: Linux linux 2.2.16 #1 Wed Aug 2 20:22:26 GMT 2000 i586 unknown gcc version 2.95.2 19991024 (release) GNU ld version 2.9.5 (with BFD 2.9.5.0.24) - Roland - To UNSUBSCRIBE, email to ginac-list(a)ginac.de with a subject of "unsubscribe".

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GiNaC with GUI
by Stefan Weinzierl 15 Jan '01

15 Jan '01

Dear all, we wrote a small program called gTybalt, which combines GiNaC, Root and TeXmacs. This yields a graphical user interface to GiNaC. Since the Root-package includes CINT, you basically have the same functionality as ginac-cint. In addition, gTybalt provides routines for plotting functions of one or two variables. The plotting routines are based on Root and are quite fancy. Furthermore by integrating TeXmacs, you get high-quality output, e.g. mathematical formulae are displayed using TeX fonts. TeXmacs is a what-you-see-is-what-you-get editor and the resulting formulae can easily be converted to LaTeX. At the present stage, the very first alpha-release of gTybalt is available. (This means: Don't expect too much !) You are welcome to visit the web-site http://www.fis.unipr.it/~stefanw/gtybalt.html for more information and the source code. Please note that at the moment gTybalt is based on OLD VERSIONS of GiNaC and CLN. You need GiNaC 0.6.4 and CLN 1.0.3. Best wishes, Stefan Weinzierl and Roberta Marani - To UNSUBSCRIBE, email to ginac-list(a)ginac.de with a subject of "unsubscribe".

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