February 2001 - GiNaC-devel

polynomial arithmetic over ginac
by Parisse Bernard 23 May '01

23 May '01

I have now a little bit improved the package of my polynomial and rational fractions utilities over GiNaC (0.6.4) It provides now gcd normalization, factor (square-free and rational roots), partfrac & integrate (assuming factor works on the denominator), for example: integrate '1/(x^4-1)^5' returns -1155/8192*log(1+x)-1155/4096*atan(x)+1155/8192*log(-1+x)+1/2048*(-893*x-1375*x^9+1755*x^5+385*x^13)*(-1+x^4)^(-4) # Time for (integrate)0.04 You can retrieve and test it at ftp://fourier.ujf-grenoble.fr/pub/hp48/giac.tgz Bye, Bernard Parisse

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sqrfree
by Parisse Bernard 11 Mar '01

11 Mar '01

Hi, Doing some tests with square-free factorization, I believe I have found a bug. Let e by (x+y)^2*(x-y) expanded and call sqrfree(e,x). You do not get the original expression, it remains expanded. If y is replaced by 1 it seems it works. Bernard

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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/>

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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.

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Problem with CLN on Alpha
by maxa＠frodo.jia.czn.cz 13 Feb '01

13 Feb '01

Dear all! I am trying to compile CLN library on an Alpha machine, but I am getting a lot of undefined symbols (see below). Can anybody help? Thanks. Best regards, Ladislav Zejda zejdaz(a)mbox.vol.cz Problem: after running "make" I am getting: ... /bin/sh ../libtool --mode=link g++ -O6 -g -fno-exceptions exam.o exam_I.o exam_RA.o exam_SF.o exam_FF.o exam_DF.o exam_LF.o exam_I_gcd.o exam_I_sqrtp.o ../src/libcln.la -lm -o exam mkdir .libs g++ -O6 -g -fno-exceptions exam.o exam_I.o exam_RA.o exam_SF.o exam_FF.o exam_DF.o exam_LF.o exam_I_gcd.o exam_I_sqrtp.o ../src/.libs/libcln.so -lgmp -lm -o .libs/exam -Wl,--rpath -Wl,/usr/local/lib exam.o: In function `global constructors keyed to main': /usr/src/cln/cln-1.1/tests/../include/cln/io.h:91: undefined reference to `_GLOBAL_$I$cl_module__cl_prin_globals__firstglobalfun' /usr/src/cln/cln-1.1/tests/../include/cln/io.h:91: undefined reference to `_GLOBAL_$I$cl_module__cl_prin_globals__firstglobalfun' exam.o: In function `global constructors keyed to main': /usr/src/cln/cln-1.1/tests/../include/cln/random.h:36: undefined reference to `_GLOBAL_$I$cl_module__cl_random_def__firstglobalfun' /usr/src/cln/cln-1.1/tests/../include/cln/random.h:36: undefined reference to `_GLOBAL_$I$cl_module__cl_random_def__firstglobalfun' exam.o: In function `global constructors keyed to main': /usr/src/cln/cln-1.1/tests/../include/cln/dfloat_class.h:55: undefined reference to `_GLOBAL_$I$cl_module__cl_DF_globals__firstglobalfun' /usr/src/cln/cln-1.1/tests/../include/cln/dfloat_class.h:55: undefined reference to `_GLOBAL_$I$cl_module__cl_DF_globals__firstglobalfun' exam.o: In function `global constructors keyed to main': ... and so on My setup (Isn't it too old?): cat /proc/version Linux version 2.2.11 (root(a)zelva.jia.czn.cz) (gcc version egcs-2.91.60 19981201 (egcs-1.1.1 release)) #46 Mon Aug 2 13:19:49 PDT 1999 cat /proc/cpuinfo cpu : Alpha cpu model : EV56 cpu variation : 0 cpu revision : 0 cpu serial number : Linux_is_Great! system type : EB164 system variation : SX164 system revision : 0 system serial number : MILO-0000 cycle frequency [Hz] : 533171648 timer frequency [Hz] : 1024.00 page size [bytes] : 8192 phys. address bits : 40 max. addr. space # : 127 BogoMIPS : 528.48 kernel unaligned acc : 7 (pc=fffffc0000449014,va=fffffc000029ef32) user unaligned acc : 2007464 (pc=120185630,va=120ca2dac) platform string : N/A g++ -v Reading specs from /usr/local/lib/gcc-lib/alphapca56-unknown-linux-gnu/egcs-2.91.60/specs gcc version egcs-2.91.60 19981201 (egcs-1.1.1 release)

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Yesterday it was late...
by Richard B. Kreckel 08 Feb '01

08 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/>

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not really a bug
by richard noel fell 05 Feb '01

05 Feb '01

I am using redhat linux 7.0 and have installed CLN. I have downloaded the ginac rpm, but the installer fails to find the CLN libraries. Where should I put CLN so ginac can be installed? Thanks for your help, Dick Fell

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