Log message:
mpfr: update to 4.0.0.

Changes from versions 3.1.* to version 4.0.0:
- The "dinde aux marrons" release.
- MPFR now depends on GMP 5.0+ instead of 4.1+.
- API change:
  Applications that call GMP's mp_set_memory_functions function to change
  the allocators must first call the new function mpfr_mp_memory_cleanup
  in all threads where MPFR is potentially used; this new function is
  currently equivalent to mpfr_free_cache.
  The reason is that the way memory allocation is done by MPFR has changed
  (again), so that the current GMP allocators are used (since for some
  applications, the old allocators may become invalid).
  Note: Freeing the caches like this might have a performance impact on some
  particular applications; if this is an issue, this could be handled for a
  future MPFR version.
- Mini-gmp support via the --enable-mini-gmp configure option (experimental).
- The minimum precision MPFR_PREC_MIN is now 1, with rounding defined as
  in the errata of IEEE 754-2008 and in the following IEEE 754 revision
  (ties rounded away from zero).
- Shared caches for multithreaded applications.
  New function mpfr_free_cache2.
- Partial support of MPFR_RNDF (faithful rounding).
- New functions: mpfr_fpif_export and mpfr_fpif_import to export and import
  numbers in a floating-point interchange format, independent both on the
  number of bits per word and on the endianness.
- New function mpfr_fmodquo to return the low bits of the quotient
  corresponding to mpfr_fmod.
- New functions mpfr_flags_clear, mpfr_flags_set, mpfr_flags_test,
  mpfr_flags_save and mpfr_flags_restore to operate on groups of flags.
- New functions mpfr_set_float128 and mpfr_get_float128 to convert from/to
  the __float128 type (requires --enable-float128 and compiler support).
- New functions mpfr_buildopt_float128_p and mpfr_buildopt_sharedcache_p.
- New functions mpfr_rint_roundeven and mpfr_roundeven, completing the
  other similar round-to-integer functions for rounding to nearest with
  the even-rounding rule.
- New macro mpfr_round_nearest_away to add partial emulation of the
  rounding to nearest-away (as defined in IEEE 754-2008).
- New functions mpfr_nrandom and mpfr_erandom to generate random numbers
  following normal and exponential distributions respectively.
- New functions mpfr_fmma and mpfr_fmms to compute a*b+c*d and a*b-c*d.
- New function mpfr_rootn_ui, similar to mpfr_root, but agreeing with the
  rootn function of the IEEE 754-2008 standard.
- New functions mpfr_log_ui to compute the logarithm of an integer,
  mpfr_gamma_inc for the incomplete Gamma function.
- New function mpfr_beta for the Beta function (incomplete, experimental).
- New function mpfr_get_q to convert a floating-point number into rational.
- The mpfr_dump function is now described in the manual; its output format
  has slightly changed.
- The mpfr_eint function now returns the value of the E1/eint1 function
  for negative argument.
- The behavior of the mpfr_set_exp function changed, as it could easily
  yield undefined behavior in some cases (this modifies both the API and
  the ABI).
- In function mpfr_urandom, the next random state no longer depends on the
  current exponent range and the rounding mode. The exceptions due to the
  rounding of the random number are now correctly generated, following the
  uniform distribution.
- Functions mpfr_grandom and mpfr_root are deprecated and will be removed
  in a future release.
- Complete rewrite of function mpfr_sum, which now works in all cases (the
  old one could take all the memory and/or crash with inputs of different
  magnitudes in case of huge cancellation or table maker's dilemma). The
  sign of an exact zero result is now specified, and the return value is
  now the usual ternary value. Note that the position of "const" in the
  mpfr_sum prototype has been fixed (the manual was correct); user code
  should not be affected.
- Old, deprecated macros mpfr_add_one_ulp and mpfr_sub_one_ulp removed.
  The mpfr_next* functions should be used instead.
- Internally, improved caching: a minimum of 10% increase of the precision
  is guaranteed to avoid too many recomputations.
- Added internal small-precision mpz_t pool, which aims to avoid the
  overhead of memory allocation, in particular.
  New function mpfr_free_pool.
- Added configure option --enable-assert=none to avoid checking any assertion.
- The --enable-decimal-float configure option no longer requires
  --with-gmp-build, and support for decimal floats is now automatically
  detected by default (similarly for support for __float128).
- Updated tuning parameters.
- Better support for Automake 1.13+ (now used to generate the tarball).
- Dropped K&R C compatibility.
- Improved MPFR manual.
- New MPFRbench program (see the tools/bench directory).
- Major speedup in mpfr_add, mpfr_sub, mpfr_mul, mpfr_div and mpfr_sqrt when
  all operands have the same precision and this precision is less than twice
  the number of bits per word, e.g., less than 128 on a 64-bit computer.
- Speedup by a factor of almost 2 in the double <--> mpfr conversions
  (mpfr_set_d and mpfr_get_d).
- Speedup in mpfr_log1p and mpfr_atanh for small arguments.
- Speedup in the mpfr_const_euler function (contributed by Fredrik Johansson),
  in the computation of Bernoulli numbers (used in mpfr_gamma, mpfr_li2,
  mpfr_digamma, mpfr_lngamma and mpfr_lgamma), in mpfr_div, in mpfr_fma
  and mpfr_fms.
- Test coverage: 96.3% lines of code.
- Bug fixes. In particular: a speed improvement when the --enable-assert
  or --enable-assert=full configure option is used with GCC; mpfr_get_str
  now sets the NaN flag on NaN input and the inexact flag when the conversion
  is inexact. For a full list, see http://www.mpfr.org/mpfr-3.1.6/#fixed
  and the same section for any previous 3.1.x version (follow the links
  in the "Changes..." sections).
- Microsoft Windows: Added support for thread-safe DLL (shared library).
  Tested with MinGW, ICC and MSVC.
- Limited pkg-config support.
- Autotools: Under Linux, make sure that the old dtags (when supported)
  are used if LD_LIBRARY_PATH is defined; otherwise "make check" would
  check an installed, compatible MPFR library found in LD_LIBRARY_PATH
  instead of the one that has been built with "make".
- New: optional "make check-gmp-symbols", mainly for binary distributions,
  to check that MPFR does not use GMP internal symbols (experimental).

Log message:
Updated mpfr to 3.1.6.

Changes from version 3.1.5 to version 3.1.6:
- Improved MPFR manual.
- Bug fixes (see <http://www.mpfr.org/mpfr-3.1.5/#fixed> and ChangeLog file).
- Autotools: Under Linux, make sure that the old dtags (when supported)
  are used if LD_LIBRARY_PATH is defined; otherwise "make check" would
  check an installed, compatible MPFR library found in LD_LIBRARY_PATH
  instead of the one that has been built with "make".

Log message:
Hack the pkg to at least build + install on NetBSD/alpha - may need
revisiting after closer examination of the underlying issues.

Log message:
Updated mpfr to 3.1.5.

Changes from version 3.1.4 to version 3.1.5:
- C++11 compatibility.
- Bug fixes (see <http://www.mpfr.org/mpfr-3.1.4/#fixed> and ChangeLog file).
- More tests.

Log message:
Update mpfr to 3.1.4:

Changes from version 3.1.3 to version 3.1.4:
- Improved MPFR manual.
- Bug fixes (see <http://www.mpfr.org/mpfr-3.1.3/#fixed> and ChangeLog file).
- MinGW (MS Windows): Added support for thread-safe DLL (shared library).

Log message:
Add SHA512 digests for distfiles for math category

Problems found locating distfiles:
	Package dfftpack: missing distfile dfftpack-20001209.tar.gz
	Package eispack: missing distfile eispack-20001130.tar.gz
	Package fftpack: missing distfile fftpack-20001130.tar.gz
	Package linpack: missing distfile linpack-20010510.tar.gz
	Package minpack: missing distfile minpack-20001130.tar.gz
	Package odepack: missing distfile odepack-20001130.tar.gz
	Package py-networkx: missing distfile networkx-1.10.tar.gz
	Package py-sympy: missing distfile sympy-0.7.6.1.tar.gz
	Package quadpack: missing distfile quadpack-20001130.tar.gz

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.

Log message:
Don't clean intermediate files after checksum/patch phase.
The work directories are almost empty, so it doesn't save much space.
It makes debugging annoying and it breaks local DISTDIR settings.

Log message:
Update to 3.1.3

Changelog:
Changes from version 3.1.2 to version 3.1.3:
- Better support for Automake 1.13+ (now used to generate the tarball).
- Improved MPFR manual.
- Bug fixes (see <http://www.mpfr.org/mpfr-3.1.2/#fixed> and ChangeLog file).

Log message:
Apply 11 upstream patches, bump to 3.2.1pl11.
Requested by Kai-Uwe Eckhardt.
Remove an incorrect comment.

Changes:

One of the mpfr_exp implementations uses a left shift on an integer
that can be negative: exps <<= 1; and this has an undefined behavior
according to the ISO C standard. In most cases, this will correspond
to a multiplication by 2, and the code will behave as expected
(this is why the bug hadn't been detected until now). But problems
may occur if a sanitizer is used (this is how this bug was detected)
or possibly in case of advanced optimizations, such as LTO. This
is fixed by the exp_2 patch.

The mpfr_fits_u*_p functions return 0 ("doesn't fit") instead of
non-zero ("fits") on negative arguments for which the rounding to
an integer in the given rounding mode is 0. This bug is fixed by
the fits-smallneg patch, which also updates the testcases.

Some tget_flt tests fail in environments where native C floating-point
division by zero is not supported, e.g. regarded as an error, such
as with Clang's sanitizer; some similar tests were already disabled
in such a case, but not all. The tset_ld test triggers a useless
overflow on a double. These problems are fixed by the clang-divby0
patch, which also disables constant division by zero on the native
C type double with Clang in order to avoid incorrect code.

The formatted output functions (mpfr_*printf) are incorrect on the
value 0 when using the alternative form (# flag), a positive
precision, and the g or G conversion specifier: there is one
additional trailing 0. The corresponding test is also incorrect
(explaining why the bug was not detected). These problems are fixed
by the printf-alt0 patch, which also provides some additional
related tests.

Only for applications using the custom interface: The mpfr_custom_init_set
macro has a typo in a variable name, which can yield incorrect
behavior if the second argument is not a simple expression. This
bug is fixed by the custom_init_set patch.

The build fails on li2.c with the GCC -Werror=return-type option
when logging has been enabled. This problem is fixed by the li2-return
patch.

The rounding of mpfr_exp can be incorrect for output precisions
larger than or equal to MPFR_EXP_THRESHOLD (several thousands of
bits; its value depends on the architecture). This bug is fixed by
the exp3 patch, which also provides a testcase.

This MPFR release fails to build with GMP 6 when the --with-gmp-build
configure option is used. The gmp6-compat patch fixes this
compatibility problem.

When dividing a very large number (near the maximum finite one, in
absolute value) by a very small number (near the minimum one, in
absolute value), an integer overflow occurs in the computation of
the exponent of the result, yielding undefined behavior, such as
the result 0 instead of infinity. This bug is fixed by the div-overflow
patch, which also provides a testcase.

The vasprintf.c source file contains incorrect assertions, which
may fail while the computation is valid; this can occur only when
outputting tiny numbers (very small exponents). These assertions
are fixed by the vasprintf patch, which also provides a testcase.

A buffer overflow may occur in mpfr_strtofr. This is due to incorrect
GMP documentation for mpn_set_str about the size of a buffer
(discussion; first fix in the GMP documentation). This bug is
present in the MPFR versions from 2.1.0 (adding mpfr_strtofr) to
this one, and can be detected by running "make check" in a 32-bit
ABI under GNU/Linux with alloca disabled (this is currently possible
by using the --with-gmp-build configure option where alloca has
been disabled in the GMP build). It is fixed by the strtofr patch.

Log message:
Mark two custom targets .PHONY.
XXX: This does not handle distribution patches.