- GiNaC-devel - ginac.de

[SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-723-g98424bb9
by Richard B. Kreckel 05 Nov '21

05 Nov '21

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 98424bb9699756d1eaf77f8a17b936f640c4083f (commit) from 0c8ec5e01cc639bb431bfe66da8a4ee720ab3e9e (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 98424bb9699756d1eaf77f8a17b936f640c4083f Author: Richard Kreckel <kreckel(a)ginac.de> Date: Fri Nov 5 14:47:53 2021 +0100 Update and clean up autoconf template files. This is needed for compatibility with newer autoconf: * Removed macro GINAC_STD_CXX_HEADERS (we use AX_CXX_COMPILE_STDCXX). * Updated m4/* files from upstream. * Ran autoupdate on acinclude.m4 and configure.ac. Tested successfully with autoconf 1.69 and 1.71. ----------------------------------------------------------------------- Summary of changes: acinclude.m4 | 56 ++------------ configure.ac | 11 +-- m4/host-cpu-c-abi.m4 | 8 +- m4/lib-ld.m4 | 6 +- m4/lib-link.m4 | 169 ++++++++++++++++++++++++++---------------- m4/lib-prefix.m4 | 206 ++++++++++++++++++++++++++++++++++----------------- 6 files changed, 262 insertions(+), 194 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_1-4-0-722-g0c8ec5e0
by Stefan Weinzierl 09 Sep '21

09 Sep '21

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 0c8ec5e01cc639bb431bfe66da8a4ee720ab3e9e (commit) from 9197695fc88502b6a56c7270e824f73faa7749f9 (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 0c8ec5e01cc639bb431bfe66da8a4ee720ab3e9e Author: Stefan Weinzierl <weinzierl(a)uni-mainz.de> Date: Thu Sep 9 16:21:45 2021 +0200 Minor bug fix for the class modular_form_kernel: Ensure that the series-method includes an order term. ----------------------------------------------------------------------- Summary of changes: ginac/integration_kernel.cpp | 2 ++ 1 file changed, 2 insertions(+) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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GiNaC 1.8.1 released
by Richard B. Kreckel 09 Aug '21

09 Aug '21

Hi, GiNaC 1.8.1 has just been tagged. Here's what's new: * Add method relational::canonical() and improve conversion of relational to Boolean (it now works on many simple symbolic cases). * Improve normalization of negative exponents. * Fix indexing multiply referenced objects with ex::operator[]. * Make functions evalf() their arguments before doing own evalf(). * Fix bugs in H_evalf() and in evaluation of iterated integrals. * Several portability improvements and compiler warning fixes. If you aren't vaccinated, consider getting, and keep hacking! -richy. -- Richard B. Kreckel <https://in.terlu.de/~kreckel/>

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[SCM] GiNaC -- a C++ library for symbolic computations tag, release_1-8-1, created. release_1-4-0-721-g9197695f
by Richard B. Kreckel 09 Aug '21

09 Aug '21

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_1-8-1 has been created at 9197695fc88502b6a56c7270e824f73faa7749f9 (commit) - Log ----------------------------------------------------------------- commit 9197695fc88502b6a56c7270e824f73faa7749f9 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Mon Aug 9 11:39:31 2021 +0200 Finalize 1.8.1 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_1-4-0-721-g9197695f
by Richard B. Kreckel 09 Aug '21

09 Aug '21

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 9197695fc88502b6a56c7270e824f73faa7749f9 (commit) via cb1ab077ba8ef330a75f40cf78b21fabbb35fb62 (commit) via 11b9b59551913fc7cce475482548874504d9bf42 (commit) from d5a419b8517e3103087cceb3f6a9585b60e46543 (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 9197695fc88502b6a56c7270e824f73faa7749f9 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Mon Aug 9 11:39:31 2021 +0200 Finalize 1.8.1 release. commit cb1ab077ba8ef330a75f40cf78b21fabbb35fb62 Author: Vladimir V. Kisil <V.Kisilv(a)leeds.ac.uk> Date: Sun Aug 8 16:18:31 2021 +0200 Add method relational::canonical(). It returns an equivalent relation with the zero right-hand side. commit 11b9b59551913fc7cce475482548874504d9bf42 Author: Vladimir V. Kisil <V.Kisilv(a)leeds.ac.uk> Date: Sun Aug 8 16:01:46 2021 +0200 [BUGFIX] Fix a bug in normal() method. Any function was confused with an exponent of the same argument during a normalisation of an expression. Example: normal(cos(x)/exp(x)) often returned 1 for realsymbol x. ----------------------------------------------------------------------- Summary of changes: NEWS | 9 +++++++++ doc/tutorial/ginac.texi | 20 +++++++++++++++++++- ginac/normal.cpp | 2 +- ginac/relational.cpp | 9 ++++++++- ginac/relational.h | 2 ++ ginac/version.h | 13 ++++++++----- m4/ax_cxx_compile_stdcxx.m4 | 15 +++++++++++++-- m4/host-cpu-c-abi.m4 | 21 ++++++++++++++++----- 8 files changed, 76 insertions(+), 15 deletions(-) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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BugFix: functions confused with exponent
by Vladimir V. Kisil 08 Aug '21

08 Aug '21

Dear All, Currently the following code in GiNaC realsymbol x("x"); cout << (cos(x)/exp(x)).normal() << endl; prints value 1 with probability 50% (and the unmodified expression otherwise). I am attaching a one-line patch to fix this silly bug. Also I am attaching a previous patch which was not commented so far. The new method may be helpful from time to time but its equivalent in a user code would be much more involved due to the private nature of the relation class members. Best wishes, Vladimir -- Vladimir V. Kisil http://www.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/MoebInv-notebooks

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[SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-718-gd5a419b8
by Stefan Weinzierl 27 Jul '21

27 Jul '21

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 d5a419b8517e3103087cceb3f6a9585b60e46543 (commit) from dcb735feae4c3a6962a7824e03b0ce4496e3ffe7 (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 d5a419b8517e3103087cceb3f6a9585b60e46543 Author: Stefan Weinzierl <weinzierl(a)uni-mainz.de> Date: Tue Jul 27 20:55:54 2021 +0200 Bug fix in modular_form_kernel::is_numeric and modular_form_kernel::Laurent_series: Call the correct method to compute the series expansion. This bug has been reported by Christoph Dlapa. ----------------------------------------------------------------------- Summary of changes: ginac/integration_kernel.cpp | 4 ++-- 1 file changed, 2 insertions(+), 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_1-4-0-717-gdcb735fe
by Stefan Weinzierl 09 Jun '21

09 Jun '21

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 dcb735feae4c3a6962a7824e03b0ce4496e3ffe7 (commit) from ef7787a325ea1f272ea08d78f2b86c48b6b2b286 (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 dcb735feae4c3a6962a7824e03b0ce4496e3ffe7 Author: Stefan Weinzierl <weinzierl(a)uni-mainz.de> Date: Wed Jun 9 14:10:23 2021 +0200 Bug fix in the routine H_evalf (a minus sign should not be forgotten). This bug was reported by Bin Zhou. ----------------------------------------------------------------------- Summary of changes: ginac/inifcns_nstdsums.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) 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_1-4-0-716-gef7787a3
by Richard B. Kreckel 06 Jun '21

06 Jun '21

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 ef7787a325ea1f272ea08d78f2b86c48b6b2b286 (commit) via 7e268ccc7dc68f4e1ca3452f95951b9e8a76f03e (commit) from 3956eb4456d23f7ba937d9b2b726c1b6eac64530 (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 ef7787a325ea1f272ea08d78f2b86c48b6b2b286 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sun Jun 6 14:48:00 2021 +0200 Add simple exam test for releational objects. commit 7e268ccc7dc68f4e1ca3452f95951b9e8a76f03e Author: Vladimir V. Kisil <V.Kisilv(a)leeds.ac.uk> Date: Sun Jun 6 14:00:50 2021 +0200 Smarter relational to Boolean conversion. If a relational contains symbolic entries we look to ex::info to decide whether it can be converted to true value. ----------------------------------------------------------------------- Summary of changes: check/.gitignore | 2 + check/CMakeLists.txt | 1 + check/Makefile.am | 4 ++ check/exam_relational.cpp | 135 ++++++++++++++++++++++++++++++++++++++++++++++ ginac/relational.cpp | 55 ++++++++++++------- 5 files changed, 178 insertions(+), 19 deletions(-) create mode 100644 check/exam_relational.cpp hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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A smarter relational to Boolean conversion
by Vladimir V. Kisil 06 Jun '21

06 Jun '21

Dear All, I am attaching a small patch. With it the following conversions from relational to Boolean will become "true" from the current "false": realsymbol x("x"); possymbol p("p"); cout << bool(p>0) << endl; cout << bool(abs(x)>=0) << endl; Best wishes, Vladimir -- Vladimir V. Kisil http://www.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/MoebInv-notebooks

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