June 2020 - GiNaC-devel

Power laws
by Vladimir V. Kisil 28 Jul '20

28 Jul '20

Dear All, I want to celebrate the 10th anniversary of this patch https://www.ginac.de/pipermail/ginac-devel/2009-October/001675.html by its re-submission. Since it was not objected since the original submission by anyone, it may be the time now to add this basic calculus-textbook rule to GiNaC. Best wishes, Vladimir -- Vladimir V. Kisil http://www.maths.leeds.ac.uk/~kisilv/ Book: Geometry of Mobius Transformations http://goo.gl/EaG2Vu Software: Geometry of cycles http://moebinv.sourceforge.net/ Jupyter (Colab): https://github.com/vvkisil/MoebInv-notebooks Jupyter (CodeOcean): https://codeocean.com/capsule/7952650/tree

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Release 1.7.10
by Richard B. Kreckel 28 Jun '20

28 Jun '20

Hi, GiNaC 1.7.10 has just been released. The changes are: * Fix collect_common_factors() for hidden zero arguments. * Fix build on modern systems (C++20 and Python3). Take care! -richy. -- Richard B. Kreckel <https://in.terlu.de/~kreckel/>

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[SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-664-g8a7fb0be
by Richard B. Kreckel 28 Jun '20

28 Jun '20

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 8a7fb0be7ad81906946715f60916ff1d3400aabe (commit) from 1193f765c62171a4267ef0138ecc22c875a7daf4 (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 8a7fb0be7ad81906946715f60916ff1d3400aabe Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sun Jun 28 19:33:38 2020 +0200 Finalize 1.7.10 release. ----------------------------------------------------------------------- Summary of changes: NEWS | 4 ++ ginac/version.h | 4 +- m4/lib-ld.m4 | 163 ++++++++++++++++++++++++++++++++++++------------------- m4/lib-link.m4 | 21 +++---- m4/lib-prefix.m4 | 135 ++++++++++++++++++++++++++------------------- 5 files changed, 201 insertions(+), 126 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_1-4-0-663-g1193f765
by Richard B. Kreckel 28 Jun '20

28 Jun '20

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 1193f765c62171a4267ef0138ecc22c875a7daf4 (commit) via e937cf43540a47c8163a3f590b2415487a7b8f0a (commit) from 5f7f81ad35a80e12c6a9a2272e3882387732be4f (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 1193f765c62171a4267ef0138ecc22c875a7daf4 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sun Jun 28 17:21:33 2020 +0200 Add exam for exam_common_factors. Including a case involving a hidden zero to catch errors like the one fixed in 5f7f81ad35a, as suggested by Alexey Sheplyakov <asheplyakov(a)yandex.ru>. commit e937cf43540a47c8163a3f590b2415487a7b8f0a Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sun Jun 28 16:07:30 2020 +0200 [build] Check for python3 command, not python. PEP 394 does not require the python command to be installed. ----------------------------------------------------------------------- Summary of changes: check/CMakeLists.txt | 1 + check/Makefile.am | 4 +++ check/exam_collect_common_factors.cpp | 59 +++++++++++++++++++++++++++++++++++ configure.ac | 8 ++--- 4 files changed, 68 insertions(+), 4 deletions(-) create mode 100644 check/exam_collect_common_factors.cpp 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_1-4-0-661-g5f7f81ad
by Richard B. Kreckel 23 Jun '20

23 Jun '20

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 5f7f81ad35a80e12c6a9a2272e3882387732be4f (commit) from 933965916b34a17fa77c413dbc23699e26eaa9bf (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 5f7f81ad35a80e12c6a9a2272e3882387732be4f Author: Vladimir V. Kisil <V.Kisil(a)leeds.ac.uk> Date: Mon Jun 22 09:49:00 2020 +0200 [BUGFIX] Prevent crashes in find_common_factor() These happened if a non-normalised common factor was equal to zero. Thanks to Feng Feng for reporting this bug. ----------------------------------------------------------------------- Summary of changes: ginac/normal.cpp | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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Patch for
by Vladimir V. Kisil 19 Jun '20

19 Jun '20

Dear All, Please find a patch to prevent crashes described in: https://www.ginac.de/pipermail/ginac-list/2020-June/002304.html Best wishes, Vladimir -- Vladimir V. Kisil http://www.maths.leeds.ac.uk/~kisilv/ Book: Geometry of Mobius Transformations http://goo.gl/EaG2Vu Software: Geometry of cycles http://moebinv.sourceforge.net/ Jupyter: https://github.com/vvkisil/MoebInv-notebooks

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[SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-660-g93396591
by Richard B. Kreckel 19 Jun '20

19 Jun '20

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 933965916b34a17fa77c413dbc23699e26eaa9bf (commit) from fa1ffcfdc9da97a6fb7cc2c9c36fe1fc45c808a9 (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 933965916b34a17fa77c413dbc23699e26eaa9bf Author: Richard Kreckel <kreckel(a)ginac.de> Date: Fri Jun 19 13:34:07 2020 +0200 Revert "Improve diff(abs(x)) for real x." This reverts commit fa1ffcfdc9da97a6fb7cc2c9c36fe1fc45c808a9. ----------------------------------------------------------------------- Summary of changes: ginac/inifcns.cpp | 2 -- 1 file changed, 2 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_1-4-0-659-gfa1ffcfd
by Richard B. Kreckel 18 Jun '20

18 Jun '20

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 fa1ffcfdc9da97a6fb7cc2c9c36fe1fc45c808a9 (commit) from 63453e8120d2e2eb9f1b836fc1b5651c2494ef1f (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 fa1ffcfdc9da97a6fb7cc2c9c36fe1fc45c808a9 Author: Pierangelo Masarati <pierangelo.masarati(a)polimi.it> Date: Wed Jun 17 19:52:49 2020 +0200 Improve diff(abs(x)) for real x. ----------------------------------------------------------------------- Summary of changes: ginac/inifcns.cpp | 2 ++ 1 file changed, 2 insertions(+) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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Re: [GiNaC-devel] [GiNaC-list] Issue with derivative of "abs"
by Vladimir V. Kisil 17 Jun '20

17 Jun '20

Dear Developers, To support Pierangelo's suggestion from here: https://www.ginac.de/pipermail/ginac-list/2020-June/002301.html I am forwarding it to this list as a Git patch attached to this email. Best wishes, Vladimir -- Vladimir V. Kisil http://www.maths.leeds.ac.uk/~kisilv/ Book: Geometry of Mobius Transformations http://goo.gl/EaG2Vu Software: Geometry of cycles http://moebinv.sourceforge.net/ Jupyter: https://github.com/vvkisil/MoebInv-notebooks

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