Upgrade MPFR to 3.1.0

[nexttime]

Our current MPFR spkg is fairly old (based on MPFR 2.4.2), and upgrading it to the latest [stable] upstream release is now on the high-priority wishlist.

Use http://perso.telecom-paristech.fr/~flori/sage/mpfr-3.1.0.p0.spkg

Apply:

• attachment: trac_11666_remove_random_hack.patch
• attachment: trac_11666_reduce_precision_max.patch
• attachment: trac_11666_fix_random_doctests.patch

Depends on #12171
Depends on #12548

Upstream: Fixed upstream, but not in a stable release.

CC: @jpflori @zimmermann6

Component: packages: standard

Keywords: sd36 sd32 MPFR spkg wishlist sd35.5

Author: Mike Hansen, Jean-Pierre Flori, Volker Braun

Reviewer: Paul Zimmermann, Jean-Pierre Flori, Volker Braun, Jeroen Demeyer

Merged: sage-5.0.beta7

Issue created by migration from https://trac.sagemath.org/ticket/11666

[williamstein]

Changed keywords from MPFR spkg wishlist to sd32 MPFR spkg wishlist

[nexttime]

Description changed:

--- 
+++ 
@@ -1,8 +1,38 @@
-Our current MPFR spkg is fairly old (based on MPFR 2.4.2), and upgrading it to the latest [stable] upstream release is now on the ["high-priority wishlist"](http://wiki.sagemath.org/days32/wishlist).
+Our current MPFR spkg is fairly old (based on **MPFR 2.4.2**), and upgrading it to the latest [stable] upstream release is now on the ["high-priority wishlist"](http://wiki.sagemath.org/days32/wishlist).
 
 `spkg-install` also needs a major rewrite, e.g. to make use of (some of) GMP's / MPIR's build flags.
 
-I think I'll provide a new spkg in the next days (weekend, say).
+*"I think I'll provide a new spkg in the next days (next weekend, say)."* [This unfortunately became a moving target; still on my high priority list though...]
 
-MPFR 3.0.1 was released on April 4th 2011; there are already some [additional upstream patches](http://www.mpfr.org/mpfr-current/allpatches) for that version; see http://www.mpfr.org/mpfr-current/ .
+---
 
+**MPFR 3.0.1** was released on April 4th 2011; there are already some [additional upstream patches](http://www.mpfr.org/mpfr-current/allpatches) for that version; see [http://www.mpfr.org/mpfr-current/](http://www.mpfr.org/mpfr-current/).
+
+---
+
+Yet **MPFR 3.1.0** is on the way, planned to be released September 30th (unless problems should occur).
+
+ == Changes from versions 3.0.* to version 3.1.0: ==
+
+- The MPFR source has been reorganized.
+- Dropped `ansi2knr` support.
+- TLS support is now detected automatically. If TLS is supported, MPFR is built as thread safe by default. To disable TLS explicitly, configure MPFR with `--disable-thread-safe`.
+- New `--enable-gmp-internals` `configure` option to use GMP's undocumented functions (not from the public API). Note that library versioning is not guaranteed to work if this option is used.
+- The `mpfr_urandom()` and `mpfr_urandomb()` functions now return identical values on processors with different word size (assuming the same random seed, and since the GMP random generator does not depend itself on the word size, cf. [http://gmplib.org/list-archives/gmp-devel/2010-September/001642.html](http://gmplib.org/list-archives/gmp-devel/2010-September/001642.html)).
+- The `mpfr_add_one_ulp()` and `mpfr_sub_one_ulp()` macros (which are obsolete and no more documented) will be removed in a future release.
+- Speed improvement for the `mpfr_sqr()` and `mpfr_div()` functions using Mulders' algorithm. As a consequence, other functions using those routines are also faster.
+- Much faster formatted output (`mpfr_printf()`, etc.) with `%Rg` and similar.
+- The `--with-gmp-build` `configure` option can now be used when the GMP source directory and the GMP build directory are different (without having to copy header files manually as before).
+- New functions `mpfr_buildopt_tune_case()`, `mpfr_frexp()`, `mpfr_grandom()` and `mpfr_z_sub()`.
+- New division-by-zero exception (flag) and associated functions.
+- The `mpfr.h` header can be included several times, while still supporting optional functions (see Section "Headers and Libraries" in the manual).
+- Updated tuning parameters.
+- Improved MPFR manual.
+- MPFR tests: `libtool` no longer generates wrapper scripts with `make check` (so that running the tests under `valgrind` or `gdb` is easier).
+- Bug fixes.
+
+   Note: The `mpfr_subnormalize()` implementation up to MPFR 3.0.0 did not change the flags. In particular, it did not follow the generic rule concerning the inexact flag (and no special behavior was specified). The case of the underflow flag was more a lack of specification.
+
+
+Tarballs of the current **release candidate** (rc1) are available in various formats (regarding the compression method); a bzipped one can be found [here](http://boxen.math.washington.edu/home/leif/Sage/spkgs/upstream/mpfr-3.1.0-rc1.tar.bz2) (`sage.math`) or [here](http://www.mpfr.org/mpfr-3.1.0/mpfr-3.1.0-rc1.tar.bz2) (upstream).
+

[nexttime]

comment:4

The second release candidate is out:

[...] The main changes since this first release candidate are:

• Fixed --enable-gmp-internals.
• Handle the special cases in mpfr_cmp_q() and mpfr_cmp_f() (fixing the problem with the erange flag in particular).
• Added mpfr_buildopt_gmpinternals_p() function.
• MPFR manual update and minor corrections.

Here's a second release candidate. As there should not be new platform-specific problems, the final release is delayed by a few days only.

[...]

http://www.mpfr.org/mpfr-3.1.0/mpfr-3.1.0-rc2.tar.bz2

[...]

The MD5's:

[...]

6ba48c87687959d5e68cd695686257f4 mpfr-3.1.0-rc2.tar.bz2

[...]

[...]

Final release now scheduled for October 3rd.

[nexttime]

Description changed:

--- 
+++ 
@@ -34,5 +34,5 @@
    Note: The `mpfr_subnormalize()` implementation up to MPFR 3.0.0 did not change the flags. In particular, it did not follow the generic rule concerning the inexact flag (and no special behavior was specified). The case of the underflow flag was more a lack of specification.
 
 
-Tarballs of the current **release candidate** (rc1) are available in various formats (regarding the compression method); a bzipped one can be found [here](http://boxen.math.washington.edu/home/leif/Sage/spkgs/upstream/mpfr-3.1.0-rc1.tar.bz2) (`sage.math`) or [here](http://www.mpfr.org/mpfr-3.1.0/mpfr-3.1.0-rc1.tar.bz2) (upstream).
+Tarballs of the current **release candidate** (rc2) are available in various formats (regarding the compression method); a bzipped one can be found [here](http://boxen.math.washington.edu/home/leif/Sage/spkgs/upstream/mpfr-3.1.0-rc2.tar.bz2) (`sage.math`) or [here](http://www.mpfr.org/mpfr-3.1.0/mpfr-3.1.0-rc2.tar.bz2) (upstream).
 

[nexttime]

Description changed:

--- 
+++ 
@@ -10,7 +10,7 @@
 
 ---
 
-Yet **MPFR 3.1.0** is on the way, planned to be released September 30th (unless problems should occur).
+**MPFR 3.1.0** [has been released October 3rd 2011](http://www.mpfr.org/mpfr-3.1.0/).
 
  == Changes from versions 3.0.* to version 3.1.0: ==
 
@@ -34,5 +34,5 @@
    Note: The `mpfr_subnormalize()` implementation up to MPFR 3.0.0 did not change the flags. In particular, it did not follow the generic rule concerning the inexact flag (and no special behavior was specified). The case of the underflow flag was more a lack of specification.
 
 
-Tarballs of the current **release candidate** (rc2) are available in various formats (regarding the compression method); a bzipped one can be found [here](http://boxen.math.washington.edu/home/leif/Sage/spkgs/upstream/mpfr-3.1.0-rc2.tar.bz2) (`sage.math`) or [here](http://www.mpfr.org/mpfr-3.1.0/mpfr-3.1.0-rc2.tar.bz2) (upstream).
+Tarballs are available in various formats (regarding the compression method); a bzipped one can be found [here](http://www.mpfr.org/mpfr-3.1.0/mpfr-3.1.0.tar.bz2) (upstream).
 

[nexttime]

comment:5

The final MPFR 3.1.0 has been released today.

See the description for links.

[mwhansen]

Dependencies: 12171

[mwhansen]

Author: Mike Hansen