- GiNaC-devel - ginac.de

[SCM] GiNaC -- a C++ library for symbolic computations tag release_1-8-8 created. release_1-4-0-787-g528fe6ff
by git service 03 Jan '25

03 Jan '25

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_1-8-8 has been created at 528fe6ff1ec07b75edf4a320def79f72396ca7df (commit) - Log ----------------------------------------------------------------- commit 528fe6ff1ec07b75edf4a320def79f72396ca7df Author: Richard Kreckel <kreckel(a)ginac.de> Date: Fri Jan 3 00:01:06 2025 +0100 Finalize 1.8.8 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_1-4-0-787-g528fe6ff
by git service 03 Jan '25

03 Jan '25

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 528fe6ff1ec07b75edf4a320def79f72396ca7df (commit) via 22716a2cc76624dfc8a254c64361e51feeeedcf8 (commit) via 110534c3ee2fc56c354e73bc484dc9ce38fb64bc (commit) via 17515f11fde916e3d3a476c0948f768dd831fc71 (commit) from 1afa7c22da265c72be954f3c7aa27d3c14a71c2b (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 528fe6ff1ec07b75edf4a320def79f72396ca7df Author: Richard Kreckel <kreckel(a)ginac.de> Date: Fri Jan 3 00:01:06 2025 +0100 Finalize 1.8.8 release. commit 22716a2cc76624dfc8a254c64361e51feeeedcf8 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Thu Jan 2 18:37:07 2025 +0100 Make symbol assignments global in ginsh. When assigning an expression to a symbol, scan all previously assigned symbols for that new symbol to occur in the expressions and replace it with the new expression. This has the effect of making symbols global in the scope of a ginsh session. See <https://www.ginac.de/pipermail/ginac-devel/2024-December/002655.html>. The patch restores the behavior prior to GiNaC 1.4.4. It actually even improves on it because the old version was based on assigned symbols and that did not work with circular assignments whereas substituion does. commit 110534c3ee2fc56c354e73bc484dc9ce38fb64bc Author: Richard Kreckel <kreckel(a)ginac.de> Date: Thu Jan 2 18:32:17 2025 +0100 [DOC] Modernize documentation about required infrastructure. commit 17515f11fde916e3d3a476c0948f768dd831fc71 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Wed Jan 1 01:52:12 2025 +0100 Add regression tests for built-in expression parser... ...involving functions and constants (and their evaluation). And while at it, fix a stray comment from 30c85fbe. ----------------------------------------------------------------------- Summary of changes: GiNaC.spec.in | 4 +- INSTALL | 37 ++---- NEWS | 5 +- check/exam_parser.cpp | 34 +++++- cmake/modules/FindReadline.cmake | 2 +- config/config.rpath | 89 ++++++++++++-- configure.ac | 2 +- doc/tutorial/Makefile.am | 1 + doc/tutorial/ginac.texi | 108 +++++++---------- ginac/matrix.cpp | 1 - ginsh/ginsh_parser.ypp | 10 +- m4/ax_cxx_compile_stdcxx.m4 | 88 +++++++++++--- m4/host-cpu-c-abi.m4 | 249 ++++++++------------------------------- m4/lib-ld.m4 | 16 +-- m4/lib-link.m4 | 34 +++--- m4/lib-prefix.m4 | 33 ++++-- 16 files changed, 346 insertions(+), 367 deletions(-) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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assignments in ginsh
by Richard B. Kreckel 01 Jan '25

01 Jan '25

Hi, The behavior of ginsh w.r.t. recursive variable assignment has silently changed in GiNaC 1.4.4 (eaa0370a). Before, we got: > a=3+x: > x=2: > a; 5 Now, we get: > a=3+x: > x=2: > a; 3+x It may be worth pointing out that in both cases, one gets: > x=2: > a=3+x: > a; 5 The old behavior can be easily restored (patch attached). Should we? Pros: ----- Ginsh isn't a real programming language - it has a global namespace without scoping. Under these circumstances, it seems natural to think of assignments as occurring in every variable defined before and after. (There is even an example in the tutorial which is now wrong; search for "x=2".) Cons: ----- This is not how it works in C++. There, we have: ex x = symbol("x"); ex a = 3+x; x = 2; cout << a << endl; // prints 3+x, not 5 I am inclined to restore the old behavior, but it may be that someone has other thoughts. Or, maybe it is totally unimportant? Any comments? All my best, -richard. -- Richard B. Kreckel <https://in.terlu.de/~kreckel/>

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[SCM] GiNaC -- a C++ library for symbolic computations branch master updated. release_1-4-0-783-g1afa7c22
by git service 01 Jan '25

01 Jan '25

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[SCM] GiNaC -- a C++ library for symbolic computations branch master updated. release_1-4-0-779-g32702f84
by git service 26 Nov '24

26 Nov '24

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 32702f847fb49da649f4362b0de3084890ac8129 (commit) from 0aa0a0c6fe7d24fdc41af01581e8728054393740 (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 32702f847fb49da649f4362b0de3084890ac8129 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Tue Nov 26 00:21:28 2024 +0100 Avoid "expression with side effects..." warning using ex_to<T>(). Clang++ warns that instantiations of this inline template function ex_to<T>(const ex &) are "expression with side effects [that] will be evaluated despite being used as an operand to 'typeid'". Let's declare this ex_to<T>() as a pure function (i.e. having no side effects) for compilers which support __attribute__((__pure__)). GCC seems to support this attribute since more than ten years. ----------------------------------------------------------------------- Summary of changes: ginac/compiler.h | 2 ++ ginac/ex.h | 3 ++- 2 files changed, 4 insertions(+), 1 deletion(-) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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Find length of a vector
by Jan Rheinländer 02 Nov '24

02 Nov '24

Hi, trying to find the length of a vector by taking the square root of the scalar product, I get this (in ginsh): > v = [[a,b]]; [[a,b]] > r = sqrt(v * transpose(v)); sqrt([[a,b]]*[[a],[b]]) > evalm(r); matrix::pow(): don't know how to handle exponent The reason is that the scalar product evaluates to a matrix with a single element, not to a numeric. Is that intended? Thanks, Jan Rheinländer

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[SCM] GiNaC -- a C++ library for symbolic computations branch master updated. release_1-4-0-778-g0aa0a0c6
by git service 24 Aug '24

24 Aug '24

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 0aa0a0c6fe7d24fdc41af01581e8728054393740 (commit) from fb343627b792016b5632f44177b4bbaf682498eb (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 0aa0a0c6fe7d24fdc41af01581e8728054393740 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Sat Aug 24 23:07:01 2024 +0200 Prepare for next release 1.8.8. SONAME change because the parser's reader_func has changed. ----------------------------------------------------------------------- Summary of changes: NEWS | 4 ++++ ginac/version.h | 8 ++++---- 2 files changed, 8 insertions(+), 4 deletions(-) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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[SCM] GiNaC -- a C++ library for symbolic computations branch faa-di-bruno deleted. release_1-4-0-577-ga0621bc9
by git service 24 Aug '24

24 Aug '24

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, faa-di-bruno has been deleted was a0621bc9d5e677fbb1fd4b799e67fb21e93c07ca - Log ----------------------------------------------------------------- a0621bc9d5e677fbb1fd4b799e67fb21e93c07ca Clean up combinatorial helpers. ----------------------------------------------------------------------- hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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[SCM] GiNaC -- a C++ library for symbolic computations branch cleanup deleted. release_1-4-0-234-g7267ae2b
by git service 24 Aug '24

24 Aug '24

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, cleanup has been deleted was 7267ae2b2727d96cbfd0279e9da8e91daa99cad7 - Log ----------------------------------------------------------------- 7267ae2b2727d96cbfd0279e9da8e91daa99cad7 Whitespace / comment fixes. ----------------------------------------------------------------------- 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_1-4-0-777-gfb343627
by git service 02 Aug '24

02 Aug '24

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 fb343627b792016b5632f44177b4bbaf682498eb (commit) from 4cd07f43443b276a96fe0b9482bb0e0889519edd (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 fb343627b792016b5632f44177b4bbaf682498eb Author: Satoshi Adachi <pegasib0(a)gmail.com> Date: Fri Aug 2 10:00:16 2024 +0200 [BUGFIX] calchhash(): work around broken RTTI on MacOS. Use workaround from 0256e2fe48a0 also if __APPLE__ is defined. ----------------------------------------------------------------------- Summary of changes: ginac/hash_seed.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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