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Announce: GNU MPFR 4.2.0 is released

From: Vincent Lefevre
Subject: Announce: GNU MPFR 4.2.0 is released
Date: Fri, 6 Jan 2023 16:18:11 +0100
User-agent: Mutt/2.2.9+60 (9917c0ea) vl-149028 (2022-12-12)

GNU MPFR 4.2.0 ("fondue savoyarde"), a C library for
multiple-precision floating-point computations with correct rounding,
is now available for download from the MPFR web site:

and from the GNU FTP site:

Thanks very much to those who sent us bug reports and/or tested the
release candidate.

The SHA1 digests:
08390d482ffcb198329632c0bf76dace53016dd8  mpfr-4.2.0.tar.bz2
114083f1ff2cbfdc09864d240449eae382a38223  mpfr-4.2.0.tar.gz
4f734ca3ebceac28e2f944b131a47133b19e2c5e  mpfr-4.2.0.tar.xz

The SHA256 digests:

The signatures:

Each tarball is signed by Vincent Lefèvre. This can be verified using
the GPG key ID 5831D11A0D4DB02A; this key can be retrieved with:

  gpg --recv-keys 5831D11A0D4DB02A

or by downloading it from <>.
The key fingerprint is:

  A534 BE3F 83E2 41D9 1828  0AEB 5831 D11A 0D4D B02A

The signatures can be verified with: gpg --verify <file.asc>
You should check that the key fingerprint matches.

Changes from versions 4.1.* to version 4.2.0:
- The "fondue savoyarde" release.
- Binary compatible with MPFR 4.0.* and 4.1.*, though some minor changes in
  the behavior of the formatted output functions may be visible, regarded
  as underspecified behavior or bug fixes (see below).
- New functions mpfr_cosu, mpfr_sinu, mpfr_tanu, mpfr_acosu, mpfr_asinu,
  mpfr_atanu and mpfr_atan2u.
- New functions mpfr_cospi, mpfr_sinpi, mpfr_tanpi, mpfr_acospi, mpfr_asinpi,
  mpfr_atanpi and mpfr_atan2pi.
- New functions mpfr_log2p1, mpfr_log10p1, mpfr_exp2m1, mpfr_exp10m1 and
- New functions mpfr_fmod_ui, mpfr_powr, mpfr_pown, mpfr_pow_uj, mpfr_pow_sj
  and mpfr_rootn_si (mpfr_pown is actually a macro defined as an alias for
- Bug fixes.
  In particular, for the formatted output functions (mpfr_printf, etc.),
  the case where the precision consists only of a period has been fixed
  to be like ".0" as specified in the ISO C standard, and the manual has
  been corrected and clarified.
  The macros of the custom interface have also been fixed: they now behave
  like functions (except a minor limitation for mpfr_custom_init_set).

You can send success and failure reports to <>, and give
us the canonical system name (by running the "./config.guess" script),
the processor and the compiler version, in order to complete the
"Platforms Known to Support MPFR" section of the MPFR 4.2.0 web page.


Vincent Lefèvre <> - Web: <>
100% accessible validated (X)HTML - Blog: <>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

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