Changelog for libmpfr6-4.2.1-2.1.x86_64.rpm :

* Tue Aug 22 2023 Richard Biener - Update to mpfr 4.2.1
* Includes all fixes from mpfr-4.2.0-cummulative.patch which is subsequently removed.
* Improved MPFR manual.
* Configure tests: replaced the test of the link with GMP, in order to avoid the use of a function without a prototype (Autoconf issue), as this is obsolescent in ISO C. The new test should be more robust.
* Wed Jun 07 2023 Richard Biener - Update mpfr-4.2.0-cummulative.patch, adds patches fixing the following bugs
* the mpfr_reldiff function, which computes |b-c|/b, is buggy on special values, e.g. on the following (b,c) values: (+Inf,+Inf) gives ±0 instead of NaN (like NaN/Inf); (+0,+0) gives 1 instead of NaN (like 0/0); (+0,1) gives 1 instead of Inf (like 1/0). Moreover, the sign of 0 for (+Inf,+Inf) or (-Inf,-Inf) is not set, i.e. it is just the sign of the destination before the call; as a consequence, results are not even consistent.
* the reuse tests are incomplete: the sign of a result zero is not checked, so that it can miss bugs (one of the mpfr_reldiff bugs mentioned above, in particular).
* the general code for the power function (mpfr_pow_general internal function) has two bugs in particular cases: the first one is an incorrect computation of the error bound when there has been an intermediate underflow or overflow (in such a case, the computation is performed again with a rescaling, thus with an additional error term, but there is a bug in the computation of this term), so that the result may be rounded incorrectly (in particular, a spurious overflow is possible); the second one occurs in a corner case (destination precision 1, rounding to nearest, and where the rounded result assuming an unbounded exponent range would be 2emin-2 and the exact result is larger than this value), with the only consequence being a missing underflow exception (the underflow flag is not set).
* the mpfr_compound_si function can take a huge amount of memory and time in some cases (when the argument x is a large even integer and xn is represented exactly in the target precision) and does not correctly detect overflows and underflows
* MPFR can crash when a formatted output function is called with %.2147483648Rg in the format string.
* Tue Apr 18 2023 Richard Biener - Add mpfr-4.2.0-cummulative.patch, cummulative patches for mpfr 4.2.0:
* A test of the thousands separator in tsprintf.c is based on the output from the GNU C Library up to 2.36, which is incorrect.
* The mpfr_ui_pow_ui function has infinite loop in case of overflow.
* The tfprintf and tprintf tests may fail in locales where decimal_point has several bytes, such as ps_AF.
* In particular cases that are very hard to round, mpfr_rec_sqrt may yield a stack overflow due to many small allocations in the stack, based on alloca().- Remove tests-tsprintf.patch that\'s included in the above set.
* Tue Jan 31 2023 Andreas Schwab - tests-tsprintf.patch: Avoid testsuite failure with glibc >= 2.37
* Mon Jan 09 2023 Richard Biener - Update to mpfr 4.2.0
* 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 mpfr_compound_si.
* 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 mpfr_pow_sj).
* 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).- Remove mpfr-4.1.1-patch01.patch which is included in the new release.
* Thu Nov 24 2022 Richard Biener - Add mpfr-4.1.1-patch01.patch to fix bug with code using the mpfr_custom_get_kind macro.
* Sat Nov 19 2022 Andreas Stieger - package license files correctly
* Fri Nov 18 2022 Richard Biener - Update to mpfr 4.1.1
* Bug fixes (see and/or the ChangeLog file), in particular for macros implementing functions.
* Improved manual formatting.
* Accumulated bugfixes- Remove mpfr-4.1.0-p7.diff, all patches are contained in the new version.- Update mpfr.keyring
* Fri Feb 12 2021 Richard Biener - Add cummulative patch mpfr-4.1.0-p7.diff fixing various bugs.
* Mon Jul 13 2020 Richard Biener - Update to mpfr 4.1.0
* New function mpfr_get_str_ndigits about conversion to a string of digits.
* New function mpfr_dot for the dot product (incomplete, experimental).
* New functions mpfr_get_decimal128 and mpfr_set_decimal128 (available only when MPFR has been built with decimal float support).
* New function mpfr_cmpabs_ui.
* New function mpfr_total_order_p for the IEEE 754 totalOrder predicate.
* The mpfr_out_str function now accepts bases from -2 to -36, in order to follow mpfr_get_str and GMP\'s mpf_out_str functions (these cases gave an assertion failure, as with other invalid bases).
* Shared caches: cleanup; really detect lock failures (abort in this case).
* The behavior of the formatted output functions (mpfr_printf, etc.) with an empty precision field has improved: trailing zeros are kept in a way similar to the formatted output functions from C.
* Improved mpfr_add and mpfr_sub when all operands have a precision equal to twice the number of bits per word, e.g., 128 bits on a 64-bit platform.
* Optimized the tuning parameters for various architectures.
* Improved test coverage to 98.6% of code for x86_64.
* Bug fixes.
* MPFR manual: corrected/completed the mpfr_get_str description in order to follow the historical behavior and GMP\'s mpf_get_str function.- Remove mpfr-4.0.2-p6.patch and floating-point-format-no-lto.patch