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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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[SCM] GiNaC -- a C++ library for symbolic computations tag, release_1-8-5, created. release_1-4-0-757-g64f88ee6
by Richard B. Kreckel 01 Jan '23

01 Jan '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_1-8-5 has been created at 64f88ee6b3f55383013d73a22eb3bfce60234dcc (commit) - Log ----------------------------------------------------------------- commit 64f88ee6b3f55383013d73a22eb3bfce60234dcc Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sun Jan 1 14:31:35 2023 +0100 Finalize 1.8.5 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_1-4-0-757-g64f88ee6
by Richard B. Kreckel 01 Jan '23

01 Jan '23

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