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[SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-764-ge8bd7a51
by Richard B. Kreckel 12 Feb '23

12 Feb '23

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GiNaC -- a C++ library for symbolic computations". The branch, master has been updated via e8bd7a51450cc03faf0225ac4850d925c51275b2 (commit) via 5a12b12b8d65bf684dcebacf411ee2d5000c8104 (commit) via 7ffad3308edc07133f86feef15725756e8366df2 (commit) via 50f573ed75c3e65bf77bdd8412190f298bd9f702 (commit) from d617c0fe3491e2540d267b4bf9ff2b1bbd91fe11 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit e8bd7a51450cc03faf0225ac4850d925c51275b2 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sun Feb 12 00:09:48 2023 +0100 [DOC] Fix build of reference.pdf. This is obnoxious: It is 2023, the ≥ character is in Unicode since 1993, and UTF-8 is ubiquitous. Yet, pdfLaTeX balks at this. Maybe the right fix would be to switch to LuaLaTeX. Alas, that doesn't seem to have reached the necessary maturity yet: <https://tug.org/pipermail/luatex/2023-February/007799.html> commit 5a12b12b8d65bf684dcebacf411ee2d5000c8104 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sat Feb 11 23:27:21 2023 +0100 [DOC] Fix some Doxygen references. commit 7ffad3308edc07133f86feef15725756e8366df2 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sat Feb 11 18:51:08 2023 +0100 Revert "Work around Tex Live 2012 versus doxygen problem." The bug seems to have disappeared many years ago, at least since Debian 9 Stretch (ca. 2017). This reverts commit af3801eb5e40bb3717bf207470252172a0af2559. commit 50f573ed75c3e65bf77bdd8412190f298bd9f702 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sat Feb 11 11:57:33 2023 +0100 [build] Fix a typo in configure.ac. ----------------------------------------------------------------------- Summary of changes: configure.ac | 2 +- doc/CMakeLists.txt | 2 -- doc/reference/Makefile.am | 1 - ginac/clifford.h | 9 +++++++-- ginac/ex.cpp | 2 ++ ginac/excompiler.h | 7 ++++--- ginac/factor.h | 2 +- ginac/idx.h | 9 +++------ ginac/indexed.h | 30 ++++++++++-------------------- ginac/normal.cpp | 1 + ginac/numeric.cpp | 2 +- ginac/pseries.cpp | 3 +-- scripts/fixupind.py | 30 ------------------------------ 13 files changed, 31 insertions(+), 69 deletions(-) delete mode 100644 scripts/fixupind.py hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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GiNaC 1.8.6 released
by Richard B. Kreckel 09 Feb '23

09 Feb '23

Hi, GiNaC 1.8.6 has been tagged and released. The News: * Fix wrong numeric info on transcendental functions. * Fix crash of evaluation of binomial(n, k) with negative integer n, k. Happy hacking! -richy. PS: If anyone knows how to push a commit together with the tags using git, do let me know. Yes, I've googled it up and tried several things but it never worked. -- Richard B. Kreckel <https://in.terlu.de/~kreckel/>

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[SCM] GiNaC -- a C++ library for symbolic computations tag, release_1-8-6, created. release_1-4-0-760-gd617c0fe
by Richard B. Kreckel 08 Feb '23

08 Feb '23

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GiNaC -- a C++ library for symbolic computations". The tag, release_1-8-6 has been created at d617c0fe3491e2540d267b4bf9ff2b1bbd91fe11 (commit) - Log ----------------------------------------------------------------- commit d617c0fe3491e2540d267b4bf9ff2b1bbd91fe11 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Wed Feb 8 22:42:03 2023 +0100 Finalize 1.8.6 release. ----------------------------------------------------------------------- hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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[SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-760-gd617c0fe
by Richard B. Kreckel 08 Feb '23

08 Feb '23

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GiNaC -- a C++ library for symbolic computations". The branch, master has been updated via d617c0fe3491e2540d267b4bf9ff2b1bbd91fe11 (commit) from c07f8287f91c473063166fde1ce33b3e32c6af5a (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit d617c0fe3491e2540d267b4bf9ff2b1bbd91fe11 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Wed Feb 8 22:42:03 2023 +0100 Finalize 1.8.6 release. ----------------------------------------------------------------------- Summary of changes: NEWS | 4 ++++ config/config.rpath | 6 +++--- ginac/version.h | 4 ++-- m4/host-cpu-c-abi.m4 | 2 +- m4/lib-ld.m4 | 2 +- m4/lib-link.m4 | 2 +- m4/lib-prefix.m4 | 2 +- 7 files changed, 13 insertions(+), 9 deletions(-) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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Re: [GiNaC-devel] [GiNaC-list] binomial coefficients
by Vladimir V. Kisil 08 Feb '23

08 Feb '23

>>>>> On Tue, 7 Feb 2023 22:18:02 +0100, Marko Riedel <riedelmo(a)mathematik.uni-stuttgart.de> said: MR> Greetings. I would like to point out that MR> binomial(-5, -7) MR> will produce a segmentation fault. Compare to Maple which says MR> that when binomial(n,k) has k<0 but n-k>=0 we should use MR> binomial(n, n-k) which gives 15 in this case. If we want this feature to be added to GiNaC then the attached patch may do it. -- Vladimir V. Kisil http://www1.maths.leeds.ac.uk/~kisilv/ Book: Geometry of Mobius Maps https://doi.org/10.1142/p835 Soft: Geometry of cycles http://moebinv.sourceforge.net/ Jupyter notebooks: https://github.com/vvkisil?tab=repositories

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[SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-759-gc07f8287
by Richard B. Kreckel 08 Feb '23

08 Feb '23

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GiNaC -- a C++ library for symbolic computations". The branch, master has been updated via c07f8287f91c473063166fde1ce33b3e32c6af5a (commit) from f04b1642020867543dc89be6af68e6bef5928c79 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit c07f8287f91c473063166fde1ce33b3e32c6af5a Author: Richard Kreckel <kreckel(a)ginac.de> Date: Wed Feb 8 00:03:06 2023 +0100 Fix numeric binomial(n, k) for integer n<0 and k≤n... ...by instead returning binomial(n, n-k). Suggested by Marko Riedel <riedelmo(a)mathematik.uni-stuttgart.de>. ----------------------------------------------------------------------- Summary of changes: ginac/numeric.cpp | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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[SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-758-gf04b1642
by Richard B. Kreckel 07 Feb '23

07 Feb '23

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GiNaC -- a C++ library for symbolic computations". The branch, master has been updated via f04b1642020867543dc89be6af68e6bef5928c79 (commit) from 64f88ee6b3f55383013d73a22eb3bfce60234dcc (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit f04b1642020867543dc89be6af68e6bef5928c79 Author: Vladimir V. Kisil <V.Kisilv(a)leeds.ac.uk> Date: Tue Feb 7 22:42:09 2023 +0100 [PATCH] Fix wrong numeric info on transcendental functions. Although expression like cos(numeric(1, 2)) is not a symbolic, it neither is numeric in the sense of CLN library. Without this patch GiNaC crashes on expressions like cos(cos(ex(1)/ex(2))). Thanks to Weng Zhanyang <cosine(a)pcbcos.xyz> for reporting this. ----------------------------------------------------------------------- Summary of changes: ginac/inifcns_trans.cpp | 6 ------ 1 file changed, 6 deletions(-) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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Re: [GiNaC-devel] [GiNaC-list] Segmentation Fault when calculate cos(cos(1/2))
by Vladimir V. Kisil 07 Feb '23

07 Feb '23

Dear Weng Zhanyang, Thanks for reporting the bug, it was introduced by me. Although expression like cos(numeric(1, 2)) is not a symbolic, it neither is numeric in the sense of CLN library (as it is erroneously produced now). I am attaching a patch to fix this. Best wishes, Vladimir -- Vladimir V. Kisil http://www1.maths.leeds.ac.uk/~kisilv/ Book: Geometry of Mobius Maps https://doi.org/10.1142/p835 Soft: Geometry of cycles http://moebinv.sourceforge.net/ Jupyter notebooks: https://github.com/vvkisil?tab=repositories >>>>> On Mon, 6 Feb 2023 13:23:55 +0000, 翁湛阳 <cosine(a)pcbcos.xyz> said: WZ> Dear GiNaC Team, When I tried to use GiNaC to calculate WZ> cos(cos(1/2)),I got a Segmentation Fault. My environment is as WZ> following: CPU: Intel i7-10750H Windows10 21H2 gcc version WZ> 12.2.0 (MinGW-W64 x86_64-ucrt-posix-seh) GiNaC 1.8.5 CLN 1.3.6 WZ> GMP 6.2.1 WZ> ArchLinux(in VMwave) Kernel: 6.1.9-arch1-1 GiNaC 1.8.4 installed WZ> by pacman CLN 1.3.6 installed by pacman gcc version 12.2.1 WZ> 20230111(GCC) WZ> Relative code file is attached The program crash at line 8.I WZ> tried to compile and run the same program at ArchLinux(GCC WZ> 12.2.1 GiNaC 1.8.4 CLN 1.3.6),and also got a segmentation fault. WZ> Besides , I tried to use ginsh to execute “cos(cos(1/2));” in WZ> ArchLinux ,it gave a error: Internal error: statement in file WZ> float/misc/cl_F_extendsqrt.cc, line 30 has been reached!! WZ> The same error also occurred at Windows,but it just exit without WZ> the information above. WZ> After that, I built some lower version of GiNaC in Windows10 and WZ> re-run my code.I found the bug disappeared at GiNaC 1.8.3 WZ> . After reading the commit history I rollback WZ> ginac\inifcns_trans.cpp to version 1.8.3 and rebuilt ,the bug WZ> disappeared. WZ> All my best, WZ> -Weng Zhanyang.

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Re: [GiNaC-devel] GiNaC 1.8.5 released
by Vladimir V. Kisil 02 Jan '23

02 Jan '23

Happy New Year, Richard and all GiNaC developers&users! Vladimir ________________________________________ From: GiNaC-devel <ginac-devel-bounces(a)ginac.de> on behalf of Richard B. Kreckel <kreckel(a)in.terlu.de> Sent: 01 January 2023 14:20 To: GiNaC development list; GiNaC public list Subject: [GiNaC-devel] GiNaC 1.8.5 released Happy New Year! As in 2022, New Year's Day brings a new GiNaC release. The only change is in factor(): * Speed up multivariate polynomial factorization; fix it in some rare corner cases where it didn't previously terminate. ...and happy hacking! -richy. -- Richard B. Kreckel <https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fin.terlu…> _______________________________________________ GiNaC-devel mailing list GiNaC-devel(a)ginac.de https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.gina…

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GiNaC 1.8.5 released
by Richard B. Kreckel 01 Jan '23

01 Jan '23

Happy New Year! As in 2022, New Year's Day brings a new GiNaC release. The only change is in factor(): * Speed up multivariate polynomial factorization; fix it in some rare corner cases where it didn't previously terminate. ...and happy hacking! -richy. -- Richard B. Kreckel <https://in.terlu.de/~kreckel/>

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