[sage-devel] Re: Bug with a very specific integral computed with giac

This is now ticket #33245 El domingo, 30 de enero de 2022 a las 13:38:38 UTC+1, emanuel.c...@gmail.com escribió: > FWIW, after rebuilding Sage with system’s giac : > > sage: integrate(e^x/(x^2+1), x, -pi, pi) > 1/2*(imag_part(Ei(pi + I))*tan(1/2)^2 - imag

[sage-devel] Re: Bug with a very specific integral computed with giac

FWIW, after rebuilding Sage with system’s giac : sage: integrate(e^x/(x^2+1), x, -pi, pi) 1/2*(imag_part(Ei(pi + I))*tan(1/2)^2 - imag_part(Ei(pi - I))*tan(1/2)^2 + 2*real_part(Ei(pi + I))*tan(1/2) + 2*real_part(Ei(pi - I))*tan(1/2) - imag_part(Ei(pi + I)) + imag_part(Ei(pi - I)))/(tan(1/2)^2

[sage-devel] Re: Bug with a very specific integral computed with giac

Le dimanche 30 janvier 2022 à 10:48:27 UTC+1, Samuel Lelievre a écrit : > 2022-01-30 05:10:25 UTC, Emmanuel Charpentier: > > > > After upgrading to 9.5.rc5 and disabling system’s pari and singular > > Did you mean "after upgrading to 9.5.rc4"? > Yes, of course. The early bird gets to commit all

[sage-devel] Re: Bug with a very specific integral computed with giac

2022-01-30 05:10:25 UTC, Emmanuel Charpentier: > > After upgrading to 9.5.rc5 and disabling system’s pari and singular Did you mean "after upgrading to 9.5.rc4"? So far, Sage 9.5.rc5 does not seem to have been released: https://github.com/sagemath/sage/tags -- You received this message because

[sage-devel] Re: Bug with a very specific integral computed with giac

To add insult to injury, trying to re-enable system’s giac (make giac-clean && configure failed. Somehow,./configurefinds no *suitable* systemgiacversion, and re-builds Sage's giac. It seems that I should also cleanpari` and consorts and re-re-build… Sigh… ​ Le vendredi 28 janvier 2022 à 23:1

[sage-devel] Re: Bug with a very specific integral computed with giac

Okay. That’s a nice one… After upgrading to 9.5.rc5 *and disabling system’s pari and singular* (for other reasons, see there ), configure somehow decided to install the giac SPKG and not to use system’s giac. This triggered the behaviou

[sage-devel] Re: Bug with a very specific integral computed with giac

I confirm the problem so please open a ticket. I tried 9.5rc4 on MacOS 11.5.2, I tried 9.4 and 9.5rc4 on Ubuntu 20.04 (CoCalc), and I tried 9.5rc3 on a 32-bit Debian virtual machine. Maybe something would have happened eventually, but none of them gave an answer within 20 minutes. The giac ve

[sage-devel] Re: Bug with a very specific integral computed with giac

Can’t reproduce on Sage 9.5.rc1 running in Debian testing. First thing after session start : sage: integrate(e^x/(x^2+1), x, -pi, pi) // Giac share root-directory:/usr/share/giac/ // Giac share root-directory:/usr/share/giac/ Added 0 synonyms 1/2*(imag_part(Ei(pi + I))*tan(1/2)^2 - imag_part(Ei