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diff --git a/gmp/tests/mpz/logic.c b/gmp/tests/mpz/logic.c
new file mode 100644
index 00000000..e5d39302
--- /dev/null
+++ b/gmp/tests/mpz/logic.c
@@ -0,0 +1,156 @@
+/* Test mpz_com, mpz_and, mpz_ior, and mpz_xor.
+
+Copyright 1993, 1994, 1996, 1997, 2001 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library.  If not, see http://www.gnu.org/licenses/.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "tests.h"
+
+void dump_abort __GMP_PROTO (());
+void debug_mp __GMP_PROTO ((mpz_t, int));
+
+int
+main (int argc, char **argv)
+{
+  mpz_t x, y, r1, r2;
+  mpz_t t1, t2, t3;
+  mp_size_t xsize, ysize;
+  int i;
+  int reps = 100000;
+  gmp_randstate_ptr rands;
+  mpz_t bs;
+  unsigned long bsi, size_range;
+
+  tests_start ();
+  rands = RANDS;
+
+  mpz_init (bs);
+
+  if (argc == 2)
+     reps = atoi (argv[1]);
+
+  mpz_init (x);
+  mpz_init (y);
+  mpz_init (r1);
+  mpz_init (r2);
+  mpz_init (t1);
+  mpz_init (t2);
+  mpz_init (t3);
+
+  for (i = 0; i < reps; i++)
+    {
+      mpz_urandomb (bs, rands, 32);
+      size_range = mpz_get_ui (bs) % 8 + 2;
+
+      mpz_urandomb (bs, rands, size_range);
+      xsize = mpz_get_ui (bs);
+      mpz_rrandomb (x, rands, xsize);
+      mpz_urandomb (bs, rands, 1);
+      bsi = mpz_get_ui (bs);
+      if ((bsi & 1) != 0)
+	mpz_neg (x, x);
+
+      mpz_urandomb (bs, rands, size_range);
+      ysize = mpz_get_ui (bs);
+      mpz_rrandomb (y, rands, ysize);
+      mpz_urandomb (bs, rands, 1);
+      bsi = mpz_get_ui (bs);
+      if ((bsi & 1) != 0)
+	mpz_neg (y, y);
+
+      mpz_com (r1, x);
+      MPZ_CHECK_FORMAT (r1);
+      mpz_com (r1, r1);
+      MPZ_CHECK_FORMAT (r1);
+      if (mpz_cmp (r1, x) != 0)
+	dump_abort ();
+
+      mpz_com (r1, y);
+      MPZ_CHECK_FORMAT (r1);
+      mpz_com (r2, r1);
+      MPZ_CHECK_FORMAT (r2);
+      if (mpz_cmp (r2, y) != 0)
+	dump_abort ();
+
+      mpz_com (t1, x);
+      MPZ_CHECK_FORMAT (t1);
+      mpz_com (t2, y);
+      MPZ_CHECK_FORMAT (t2);
+      mpz_and (t3, t1, t2);
+      MPZ_CHECK_FORMAT (t3);
+      mpz_com (r1, t3);
+      MPZ_CHECK_FORMAT (r1);
+      mpz_ior (r2, x, y);
+      MPZ_CHECK_FORMAT (r2);
+      if (mpz_cmp (r1, r2) != 0)
+	dump_abort ();
+
+      mpz_com (t1, x);
+      MPZ_CHECK_FORMAT (t1);
+      mpz_com (t2, y);
+      MPZ_CHECK_FORMAT (t2);
+      mpz_ior (t3, t1, t2);
+      MPZ_CHECK_FORMAT (t3);
+      mpz_com (r1, t3);
+      MPZ_CHECK_FORMAT (r1);
+      mpz_and (r2, x, y);
+      MPZ_CHECK_FORMAT (r2);
+      if (mpz_cmp (r1, r2) != 0)
+	dump_abort ();
+
+      mpz_ior (t1, x, y);
+      MPZ_CHECK_FORMAT (t1);
+      mpz_and (t2, x, y);
+      MPZ_CHECK_FORMAT (t2);
+      mpz_com (t3, t2);
+      MPZ_CHECK_FORMAT (t3);
+      mpz_and (r1, t1, t3);
+      MPZ_CHECK_FORMAT (r1);
+      mpz_xor (r2, x, y);
+      MPZ_CHECK_FORMAT (r2);
+      if (mpz_cmp (r1, r2) != 0)
+	dump_abort ();
+    }
+
+  mpz_clear (bs);
+  mpz_clear (x);
+  mpz_clear (y);
+  mpz_clear (r1);
+  mpz_clear (r2);
+  mpz_clear (t1);
+  mpz_clear (t2);
+  mpz_clear (t3);
+
+  tests_end ();
+  exit (0);
+}
+
+void
+dump_abort ()
+{
+  abort();
+}
+
+void
+debug_mp (mpz_t x, int base)
+{
+  mpz_out_str (stderr, base, x); fputc ('\n', stderr);
+}