Cleanup and fixes for the mpz_t pool.

  * Split src/free_cache.c to itself and a new source file src/pool.c
    containing pool related code.
  * src/mpfr-impl.h, src/pool.c: cleanup and fixes. In particular:
      - renamed MPFR_MY_MPZ_INIT to MPFR_POOL_NENTRIES;
      - no longer use GMP's symbols __gmpz_init, etc. directly;
      - improved the condition for mpfr_mpz_init2;
      - fixed the condition in mpfr_mpz_clear (we want to consider
        the allocated size, not the size of the current number).
  * src/Makefile.am: added pool.c.
  * src/mpfr.h: added mpfr_free_pool prototype.
  * doc/mpfr.texi: updated pool description in "Memory Handling";
    new function mpfr_free_pool.
  * doc/README.dev: update due to the rename of MPFR_MY_MPZ_INIT.
  * NEWS: better announcement of the mpz_t pool.

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@11922 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 4 insertions, 1 deletions

diff --git a/NEWS b/NEWS
index df1b95c17..76a03b3d0 100644
--- a/NEWS
+++ b/NEWS
@@ -87,7 +87,10 @@ Changes from versions 3.1.* to version 4.0.0:
 - 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 mpz_t caching.
+  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