Fourth MPFR-MPC Developers Meeting

Location: Salle Europe, LAAS-CNRS 7 Avenue du Colonel Roche, Toulouse

The goal of this meeting is to discuss future developments of the GNU MPFR and the GNU MPC libraries, following the previous meetings from 2011 in Paris 2012 in Bordeaux, and 2014 in Nancy. It is open to all people who are interested to contribute to GNU MPFR and/or GNU MPC, either in writing new code or contributing new ideas (see How to contribute to GNU MPFR?).

Practical organization: there is no registration fee, however people interested in attending this meeting are kindly requested to inform Paul Zimmermann. Participants are supposed to take in charge their travel and accomodation expenses (coffee breaks will be offered by the ANR FastRelax project).

Proposed topics:

• [MPFR] plans for the 4.0 release (Vincent)
• [MPFR] revisit the mpz_t pool (Vincent, Patrick)
• [MPFR] add tests for fpif.c in precision 1 and > MPFR_PREC_MAX (done)
• [MPFR] add more warnings (work in progress)
• [MPFR] link time optimization (experimental, done)
• [MPFR] shared cache (mostly done)
• [MPFR] mpfr_array issue (bug #3598) (Patrick, done, remains to write the documentation)
• [MPFR] fmma issue and UBF branch (done)
• [MPFR] improve mpfr_log_ui (done)
• [MPC] work on AGM: implemented mpc_cmp_abs
• [MPC] add new function mpc_cmp_abs (done)
• [MPC] roots of unity (done)
• [MPC] library of ball arithmetic
• [MPC] new release 1.1
• [MPCHECK] add support for fma, including tests with intermediate overflow [done]

Tentative schedule: The official meeting will start on May 23 around 9AM, and end on May 24 around 6PM.

• May 23, 9AM: warm-up and installation of the development version of MPFR and MPC
• May 23, 9.30AM: distribution of topics among participants
• May 23, 10AM: discussions and/or coding-sprints
• May 23, 12AM: lunch
• May 23, 2PM: discussions and/or coding-sprints
• May 23, 6PM: progress summary
• May 24, 9AM: discussions and/or coding-sprints
• May 24, 12AM: lunch
• May 24, 2PM: discussions and/or coding-sprints
• May 24, 6PM: progress summary and end of workshop

Confirmed participants:
Andreas Enge
Fredrik Johansson
Vincent Lefèvre
Patrick Pélissier
Paul Zimmermann

Sponsors: ERC ANTICS and ANR FastRelax