- GiNaC-devel - ginac.de

Upgrade of mailing list software
by Christian Bauer 23 Jun '25

23 Jun '25

Greetings, due to obsolescence reasons, we have migrated this mailing list from GNU Mailman 2 to Mailman 3. All list memberships have (hopefully) been retained, so you should be able to continue using this list as before. All old list passwords, however, are gone. This also means no more monthly membership and password reminders. If you wish to manage your subscriptions using a web interface, you need to head to: https://lists.ginac.de and create an account ("Sign Up") using the same email address with which you are subscribed to this list (there will be a verification step for that address). This is optional - you can also manage you subscription via email to the special "-request" or "-unsubscribe" list addresses. The footer of this mail should give an example. The new list archives are located here: https://lists.ginac.de/archives/ and now provide a fulltext search feature. If you encounter any issues, please do not hesitate to contact me directly. Happy computing, Christian -- / Physics is an algorithm \/ www.cebix.net

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GiNaC 1.8.9 released
by Richard B. Kreckel 16 May '25

16 May '25

Hi, We proudly announce the most boring GiNaC release ever: 1.8.9. It fixes compilation with cutting edge gcc 15. That's it. Happy hacking! -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_1-4-0-791-gf0ffaf7e
by git service 15 May '25

15 May '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 f0ffaf7ecbd9a075168147ad09c4db1a4e8f2859 (commit) via 9b5635780149593876bb0d4a10516e8b2b59c36c (commit) via b9ba6927eca126c64406874120d8e1b95bee7896 (commit) from 97b3c165ba38a5c6dbed4091bd81962b2c4e124d (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 f0ffaf7ecbd9a075168147ad09c4db1a4e8f2859 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Thu May 15 21:06:38 2025 +0200 Finalize 1.8.9 release. commit 9b5635780149593876bb0d4a10516e8b2b59c36c Author: Richard Kreckel <kreckel(a)ginac.de> Date: Thu May 15 20:43:22 2025 +0200 Remove unused variable in Kronecker_dz_kernel method. commit b9ba6927eca126c64406874120d8e1b95bee7896 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Thu May 15 20:42:47 2025 +0200 Simplify random_modint functor a bit. ----------------------------------------------------------------------- Summary of changes: NEWS | 3 +++ ginac/integration_kernel.cpp | 1 - ginac/polynomial/smod_helpers.h | 16 +++++++--------- ginac/version.h | 4 ++-- 4 files changed, 12 insertions(+), 12 deletions(-) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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[SCM] GiNaC -- a C++ library for symbolic computations tag release_1-8-9 created. release_1-4-0-791-gf0ffaf7e
by git service 15 May '25

15 May '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_1-8-9 has been created at f0ffaf7ecbd9a075168147ad09c4db1a4e8f2859 (commit) - Log ----------------------------------------------------------------- commit f0ffaf7ecbd9a075168147ad09c4db1a4e8f2859 Author: Richard Kreckel <kreckel(a)ginac.de> Date: Thu May 15 21:06:38 2025 +0200 Finalize 1.8.9 release. ----------------------------------------------------------------------- hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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request to fix download page
by American Citizen 01 May '25

01 May '25

Could someone please fix the broken links for the https page for ginac.git download? The link https://www.ginac.de/ginac.git/ on the Download page https://www.ginac.de/Download.html and the main page https://www.ginac.de/ is broken and result in a 404 Not Found error from either webpage. > > Not Found > > The requested URL was not found on this server. > > ------------------------------------------------------------------------ > Apache Server at www.ginac.de Port 443 > Thank you for your prompt attention to this matter, timestamp 1:27:02 PM PDT, Tuesday 29-April-2025

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ginac-1.8.8/cln-1.3.7/gcc-15.1.0 test failures
by Andrey G. Grozin 30 Apr '25

30 Apr '25

Hello *, I've compiled cln-1.3.7 and ginac-1.8.8 by gcc-15.1.0 on Gentoo linux (I'm the maintainer of the ginal package in this distro). Everything's fine. But when I run ginac tests, I get x86_64-pc-linux-gnu-g++ -DHAVE_CONFIG_H -I. -I../config -I./../ginac -I../ginac -DIN_GINAC -O2 -march=alderlake -mabm -mno-cldemote -mno-kl -mno-pconfig -mno-sgx -mno-widekl -mshstk --param=l1-cache-line-size=64 --param=l1-cache-size=32 --param=l2-cache-size=24576 -pipe -c -o exam_archive.o exam_archive.cpp exam_archive.cpp: In function ‘unsigned int numeric_complex_bug()’: exam_archive.cpp:104:17: error: reference to ‘complex’ is ambiguous 104 | complex(one, one), | ^~~~~~~ In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15/tuple:40, from /usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15/functional:55, from ./../ginac/ptr.h:29, from ./../ginac/basic.h:27, from ./../ginac/ginac.h:28, from exam_archive.cpp:23: /usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15/bits/stl_pair.h:105:11: note: candidates are: ‘template<class _Tp> class std::complex’ 105 | class complex; | ^~~~~~~ In file included from ./../ginac/numeric.h:30, from ./../ginac/ginac.h:40: /usr/include/cln/complex.h:22:19: note: ‘const cln::cl_N cln::complex(const cl_R&, const cl_R&)’ 22 | extern const cl_N complex (const cl_R& a, const cl_R& b); | ^~~~~~~ exam_archive.cpp:105:17: error: reference to ‘complex’ is ambiguous 105 | complex(one, three_fp), | ^~~~~~~ /usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15/bits/stl_pair.h:105:11: note: candidates are: ‘template<class _Tp> class std::complex’ 105 | class complex; | ^~~~~~~ /usr/include/cln/complex.h:22:19: note: ‘const cln::cl_N cln::complex(const cl_R&, const cl_R&)’ 22 | extern const cl_N complex (const cl_R& a, const cl_R& b); | ^~~~~~~ exam_archive.cpp:106:17: error: reference to ‘complex’ is ambiguous 106 | complex(three_fp, one), | ^~~~~~~ /usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15/bits/stl_pair.h:105:11: note: candidates are: ‘template<class _Tp> class std::complex’ 105 | class complex; | ^~~~~~~ /usr/include/cln/complex.h:22:19: note: ‘const cln::cl_N cln::complex(const cl_R&, const cl_R&)’ 22 | extern const cl_N complex (const cl_R& a, const cl_R& b); | ^~~~~~~ exam_archive.cpp:107:17: error: reference to ‘complex’ is ambiguous 107 | complex(three_fp, three_fp) | ^~~~~~~ /usr/lib/gcc/x86_64-pc-linux-gnu/15/include/g++-v15/bits/stl_pair.h:105:11: note: candidates are: ‘template<class _Tp> class std::complex’ 105 | class complex; | ^~~~~~~ /usr/include/cln/complex.h:22:19: note: ‘const cln::cl_N cln::complex(const cl_R&, const cl_R&)’ 22 | extern const cl_N complex (const cl_R& a, const cl_R& b); | ^~~~~~~ exam_archive.cpp:108:9: error: could not convert ‘{<expression error>, <expression error>, <expression error>, <expression error>}’ from ‘<brace-enclosed initializer list>’ to ‘std::vector<cln::cl_N>’ 108 | }; | ^ | | | <brace-enclosed initializer list> Any ideas? Andrey

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[SCM] GiNaC -- a C++ library for symbolic computations branch master updated. release_1-4-0-788-g97b3c165
by git service 30 Apr '25

30 Apr '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 97b3c165ba38a5c6dbed4091bd81962b2c4e124d (commit) from 528fe6ff1ec07b75edf4a320def79f72396ca7df (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 97b3c165ba38a5c6dbed4091bd81962b2c4e124d Author: Vladimir V. Kisil <V.Kisil(a)leeds.ac.uk> Date: Wed Apr 30 00:16:26 2025 +0200 [PATCH] Fix ambiguity in calling complex constructor (GCC 15). Reported by Andrey G. Grozin <A.G.Grozin(a)inp.nsk.su>. ----------------------------------------------------------------------- Summary of changes: check/exam_archive.cpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) hooks/post-receive -- GiNaC -- a C++ library for symbolic computations

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Patch for base of natural logarithm
by Jan Rheinländer 09 Feb '25

09 Feb '25

Hi, this is a patch to add the base of the natural logarithm as a new constant EulerNum, and ensure that log(EulerNum) evaluates to 1. Of course, exp(1) will do fine for calculations. But for printing, it is nicer to see e^x instead of exp(1)^x or 2.718^x. Hope this is useful. Jan --- ginac/constant.cpp | 5 +++++ ginac/constant.h | 1 + ginac/inifcns_trans.cpp | 3 +++ ginac/numeric.cpp | 5 +++++ ginac/numeric.h | 1 + ginsh/ginsh_lexer.lpp | 1 + 6 files changed, 16 insertions(+) diff --git a/ginac/constant.cpp b/ginac/constant.cpp index a89711ef..60af44bc 100644 --- a/ginac/constant.cpp +++ b/ginac/constant.cpp @@ -91,6 +91,8 @@ void constant::read_archive(const archive_node &n, lst &sym_lst) *this = Catalan; else if (s == Euler.name) *this = Euler; + else if (s == EulerNum.name) + *this = EulerNum; else throw (std::runtime_error("unknown constant '" + s + "' in archive")); } else @@ -254,4 +256,7 @@ const constant Euler("Euler", EulerEvalf, "\\gamma_E", domain::positive); /** Catalan's constant. (0.91597...) Diverts straight into CLN for evalf(). */ const constant Catalan("Catalan", CatalanEvalf, "G", domain::positive); +/** Base of the natural logarithm */ +const constant EulerNum("EulerNum", EulerNumEvalf, "\\mathit{e}", domain::positive); + } // namespace GiNaC diff --git a/ginac/constant.h b/ginac/constant.h index 92d07941..24839d46 100644 --- a/ginac/constant.h +++ b/ginac/constant.h @@ -82,6 +82,7 @@ GINAC_DECLARE_UNARCHIVER(constant); extern const constant Pi; extern const constant Catalan; extern const constant Euler; +extern const constant EulerNum; } // namespace GiNaC diff --git a/ginac/inifcns_trans.cpp b/ginac/inifcns_trans.cpp index 6f577bae..ef5f52f1 100644 --- a/ginac/inifcns_trans.cpp +++ b/ginac/inifcns_trans.cpp @@ -202,6 +202,9 @@ static ex log_eval(const ex & x) return log(ex_to<numeric>(x)); } + if (x.is_equal(EulerNum)) + return *_num1_p; + // log(exp(t)) -> t (if -Pi < t.imag() <= Pi): if (is_ex_the_function(x, exp)) { const ex &t = x.op(0); diff --git a/ginac/numeric.cpp b/ginac/numeric.cpp index 6da79977..addc012d 100644 --- a/ginac/numeric.cpp +++ b/ginac/numeric.cpp @@ -2515,6 +2515,11 @@ ex CatalanEvalf() return numeric(cln::catalanconst(cln::default_float_format)); } +/** Floating point evaluation of base of natural logarithm. */ +ex EulerNumEvalf() +{ + return exp(*_num1_p); // Suggestion by Vladimir Kisil on ginac-devel +} /** _numeric_digits default ctor, checking for singleton invariance. */ _numeric_digits::_numeric_digits() diff --git a/ginac/numeric.h b/ginac/numeric.h index 0673d9a5..d25670f9 100644 --- a/ginac/numeric.h +++ b/ginac/numeric.h @@ -325,6 +325,7 @@ inline const numeric denom(const numeric &x) ex PiEvalf(); ex EulerEvalf(); ex CatalanEvalf(); +ex EulerNumEvalf(); } // namespace GiNaC diff --git a/ginsh/ginsh_lexer.lpp b/ginsh/ginsh_lexer.lpp index 6e0732e7..bcfecd10 100644 --- a/ginsh/ginsh_lexer.lpp +++ b/ginsh/ginsh_lexer.lpp @@ -75,6 +75,7 @@ AN [0-9a-zA-Z_] Pi yylval = Pi; return T_LITERAL; Euler yylval = Euler; return T_LITERAL; Catalan yylval = Catalan; return T_LITERAL; +EulerNum yylval = EulerNum; return T_LITERAL; FAIL yylval = *new fail(); return T_LITERAL; I yylval = I; return T_NUMBER; Digits yylval = (long)Digits; return T_DIGITS; -- 2.43.0

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printing of class power
by Stefan Weinzierl 13 Jan '25

13 Jan '25

Dear all, happy new year to everybody and my apologies for coming up with a potential bug report shortly after a new release. The code snippet symbol x("x"); ex f = 2*x; ex g = pow(x,5); f.print(GiNaC::print_context(std::cout)); std::cout << std::endl; g.print(GiNaC::print_context(std::cout)); std::cout << std::endl; will print 2*x [power object] Is that really intentional? The behaviour is the same in GiNaC 1.8.7 and 1.8.8. Best wishes, Stefan

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GiNaC 1.8.8 released
by Richard B. Kreckel 03 Jan '25

03 Jan '25

Hi, GiNaC 1.8.8 has been released. This release features some build fixes (notably for MacOS) and an improvement in ginsh: Assigning variables in ginsh now affects all other assigned variables which contain that new variable. Note to packagers: The soname has changed. Happy hacking! -richy. -- Richard B. Kreckel <https://in.terlu.de/~kreckel/>

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