Source reorganization. In short:

  * Added directories and moved related files into them:
      - src for the MPFR source files (to build the library).
      - doc for documentation files (except INSTALL, README...).
      - tools for various tools (scripts) and mbench.
      - tune for tuneup-related source files.
      - other for other source files (not distributed in tarballs).
    Existing directories:
      - tests for the source files of the test suite (make check).
      - examples for examples.
      - m4 for m4 files.
  * Renamed configure.in to configure.ac.
  * Added/updated Makefile.am files where needed.
  * Updated acinclude.m4 and configure.ac (AC_CONFIG_FILES line).
  * Updated the documentation (INSTALL, README, doc/README.dev and
    doc/mpfr.texi).
  * Updated NEWS and TODO.
  * Updated the scripts now in tools.

The following script was used:

#!/usr/bin/env zsh
svn mkdir doc other src tools tune
svn mv ${${(M)$(sed -n '/libmpfr_la_SOURCES/,/[^\]$/p' \
         Makefile.am):#*.[ch]}:#get_patches.c} mparam_h.in \
       round_raw_generic.c jyn_asympt.c src
svn mv mbench check_inits_clears coverage get_patches.sh mpfrlint \
  nightly-test update-patchv update-version tools
svn mv bidimensional_sample.c speed.c tuneup.c tune
svn mv *.{c,h} other
svn mv FAQ.html README.dev algorithm* faq.xsl fdl.texi mpfr.texi \
  update-faq doc
svn mv configure.in configure.ac
svn cp Makefile.am src/Makefile.am
svn rm replace_all
[Modifying some files, see above]
svn add doc/Makefile.am
svn add tune/Makefile.am

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@7087 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 98 insertions, 0 deletions

diff --git a/src/urandomb.c b/src/urandomb.c
new file mode 100644
index 000000000..e632ca83d
--- /dev/null
+++ b/src/urandomb.c
@@ -0,0 +1,98 @@
+/* mpfr_urandomb (rop, state, nbits) -- Generate a uniform pseudorandom
+   real number between 0 (inclusive) and 1 (exclusive) of size NBITS,
+   using STATE as the random state previously initialized by a call to
+   gmp_randinit_lc_2exp_size().
+
+Copyright 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+Contributed by the Arenaire and Caramel projects, INRIA.
+
+This file is part of the GNU MPFR Library.
+
+The GNU MPFR Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+The GNU MPFR Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MPFR Library; see the file COPYING.LESSER.  If not, see
+http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+
+#define MPFR_NEED_LONGLONG_H
+#include "mpfr-impl.h"
+
+void
+mpfr_rand_raw (mp_ptr mp, gmp_randstate_t rstate, unsigned long int nbits)
+{
+  mpz_t z;
+
+  /* To be sure to avoid the potential allocation of mpz_urandomb */
+  ALLOC(z) = SIZ(z) = (nbits / GMP_NUMB_BITS) + 1;
+  PTR(z)   = mp;
+  mpz_urandomb(z, rstate, nbits);
+}
+
+int
+mpfr_urandomb (mpfr_ptr rop, gmp_randstate_t rstate)
+{
+  mp_ptr rp;
+  mpfr_prec_t nbits;
+  mp_size_t nlimbs;
+  mp_size_t k; /* number of high zero limbs */
+  mpfr_exp_t exp;
+  int cnt;
+
+  rp = MPFR_MANT (rop);
+  nbits = MPFR_PREC (rop);
+  nlimbs = MPFR_LIMB_SIZE (rop);
+  MPFR_SET_POS (rop);
+
+  /* Uniform non-normalized significand */
+  mpfr_rand_raw (rp, rstate, nlimbs * GMP_NUMB_BITS);
+
+  /* If nbits isn't a multiple of GMP_NUMB_BITS, mask the low bits */
+  cnt = nlimbs * GMP_NUMB_BITS - nbits;
+  if (MPFR_LIKELY (cnt != 0))
+    rp[0] &= ~MPFR_LIMB_MASK (cnt);
+
+  /* Count the null significant limbs and remaining limbs */
+  exp = 0;
+  k = 0;
+  while (nlimbs != 0 && rp[nlimbs - 1] == 0)
+    {
+      k ++;
+      nlimbs --;
+      exp -= GMP_NUMB_BITS;
+    }
+
+  if (MPFR_LIKELY (nlimbs != 0)) /* otherwise value is zero */
+    {
+      count_leading_zeros (cnt, rp[nlimbs - 1]);
+      /* Normalization */
+      if (mpfr_set_exp (rop, exp - cnt))
+        {
+          /* If the exponent is not in the current exponent range, we
+             choose to return a NaN as this is probably a user error.
+             Indeed this can happen only if the exponent range has been
+             reduced to a very small interval and/or the precision is
+             huge (very unlikely). */
+          MPFR_SET_NAN (rop);
+          __gmpfr_flags |= MPFR_FLAGS_NAN; /* Can't use MPFR_RET_NAN */
+          return 1;
+        }
+      if (cnt != 0)
+        mpn_lshift (rp + k, rp, nlimbs, cnt);
+      if (k != 0)
+        MPN_ZERO (rp, k);
+    }
+  else
+    MPFR_SET_ZERO (rop);
+
+  return 0;
+}