[Gmp-commit] /var/hg/gmp: 2 new changesets

[mercurial at gmplib.org]

details:   /var/hg/gmp/rev/a7351443295f
changeset: 16290:a7351443295f
user:      Marco Bodrato <bodrato at mail.dm.unipi.it>
date:      Mon Feb 10 08:28:14 2014 +0100
description:
mini-gmp/tests/t-limbs.c: New test program.

details:   /var/hg/gmp/rev/8e41c39c9392
changeset: 16291:8e41c39c9392
user:      Marco Bodrato <bodrato at mail.dm.unipi.it>
date:      Mon Feb 10 08:29:49 2014 +0100
description:
ChangeLog

diffstat:

 ChangeLog                |   5 ++
 mini-gmp/tests/Makefile  |   2 +-
 mini-gmp/tests/t-limbs.c |  91 ++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 97 insertions(+), 1 deletions(-)

diffs (119 lines):

diff -r a0e2c942ea0b -r 8e41c39c9392 ChangeLog
--- a/ChangeLog	Sun Feb 09 22:27:47 2014 +0100
+++ b/ChangeLog	Mon Feb 10 08:29:49 2014 +0100
@@ -1,3 +1,8 @@
+2014-02-10 Marco Bodrato <bodrato at mail.dm.unipi.it>
+
+	* mini-gmp/tests/t-limbs.c: New test for mpz_limbs_*.
+	* mini-gmp/tests/Makefile (CHECK_PROGRAMS): Add it.
+
 2014-02-09  Niels Möller  <nisse at lysator.liu.se>
 
 	* tune/tuneup.c (tune_powm_sec): Avoid timing of the nonsensical
diff -r a0e2c942ea0b -r 8e41c39c9392 mini-gmp/tests/Makefile
--- a/mini-gmp/tests/Makefile	Sun Feb 09 22:27:47 2014 +0100
+++ b/mini-gmp/tests/Makefile	Mon Feb 10 08:29:49 2014 +0100
@@ -30,7 +30,7 @@
 CHECK_PROGRAMS = t-add t-sub t-mul t-invert t-div t-div_2exp \
 	t-double t-cmp_d t-gcd t-lcm t-import t-comb t-signed \
 	t-sqrt t-root t-powm t-logops t-bitops t-scan t-str \
-	t-reuse t-aorsmul
+	t-reuse t-aorsmul t-limbs
 
 MISC_OBJS = hex-random.o mini-random.o testutils.o
 
diff -r a0e2c942ea0b -r 8e41c39c9392 mini-gmp/tests/t-limbs.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mini-gmp/tests/t-limbs.c	Mon Feb 10 08:29:49 2014 +0100
@@ -0,0 +1,91 @@
+/*
+
+Copyright 2012, 2014, Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library test suite.
+
+The GNU MP Library test suite is free software; you can redistribute it
+and/or modify it under the terms of the GNU 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 MP Library test suite 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 General
+Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+the GNU MP Library test suite.  If not, see https://www.gnu.org/licenses/.  */
+
+#include <limits.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "testutils.h"
+
+#define MAXBITS 400
+#define COUNT 100
+
+static void
+dump (const char *label, const mpz_t x)
+{
+  char *buf = mpz_get_str (NULL, 16, x);
+  fprintf (stderr, "%s: %s\n", label, buf);
+  testfree (buf);
+}
+
+void
+my_mpz_mul (mpz_t r, mpz_srcptr a,  mpz_srcptr b)
+{
+  mp_limb_t *tp;
+  mp_size_t tn, an, bn;
+
+  an = mpz_size (a);
+  bn = mpz_size (b);
+  tn = an + bn;
+
+  tp = mpz_limbs_write (r, tn);
+  if (mpz_sgn (a) * mpz_sgn(b) == 0)
+    mpn_zero (tp, tn);
+  else if (an > bn)
+    mpn_mul (tp, mpz_limbs_read (a), an, mpz_limbs_read (b), bn);
+  else
+    mpn_mul (tp, mpz_limbs_read (b), bn, mpz_limbs_read (a), an);
+
+  if (mpz_sgn (a) != mpz_sgn(b))
+    tn = - tn;
+
+  mpz_limbs_finish (r, tn);
+}
+
+void
+testmain (int argc, char **argv)
+{
+  unsigned i;
+  mpz_t a, b, t, res, ref;
+
+  mpz_init (a);
+  mpz_init (b);
+  mpz_init (res);
+  mpz_init (ref);
+
+  for (i = 0; i < COUNT; i++)
+    {
+      mini_random_op3 (OP_MUL, MAXBITS, a, b, ref);
+      my_mpz_mul (res, a, b);
+      if (mpz_cmp (res, ref))
+	{
+	  fprintf (stderr, "my_mpz_mul failed:\n");
+	  dump ("a", a);
+	  dump ("b", b);
+	  dump ("r", res);
+	  dump ("ref", ref);
+	  abort ();
+	}
+    }
+  mpz_clear (a);
+  mpz_clear (b);
+  mpz_clear (res);
+  mpz_clear (ref);
+}