--- /dev/null
+/* Test mpz_mul, mpz_divexact.
+
+Copyright 1996, 2001, 2002 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"
+
+int
+main (int argc, char **argv)
+{
+ mpz_t op1, op2;
+ mpz_t prod, quot;
+ mp_size_t size;
+ int i;
+ int reps = 200000;
+ gmp_randstate_ptr rands;
+ mpz_t bs;
+ unsigned long bsi, size_range;
+
+ tests_start ();
+ rands = RANDS;
+
+ mp_trace_base = -16;
+
+ mpz_init (bs);
+
+ if (argc == 2)
+ reps = atoi (argv[1]);
+
+ mpz_init (op1);
+ mpz_init (op2);
+ mpz_init (prod);
+ mpz_init (quot);
+
+ for (i = 0; i < reps; i++)
+ {
+ mpz_urandomb (bs, rands, 32);
+ size_range = mpz_get_ui (bs) % 10 + 2; /* 0..2047 bit operands */
+
+ mpz_urandomb (bs, rands, size_range);
+ size = mpz_get_ui (bs);
+ mpz_rrandomb (op1, rands, size);
+
+ do
+ {
+ mpz_urandomb (bs, rands, size_range);
+ size = mpz_get_ui (bs);
+ mpz_rrandomb (op2, rands, size);
+ }
+ while (mpz_sgn (op2) == 0);
+
+ mpz_urandomb (bs, rands, 2);
+ bsi = mpz_get_ui (bs);
+ if ((bsi & 1) != 0)
+ mpz_neg (op1, op1);
+ if ((bsi & 2) != 0)
+ mpz_neg (op2, op2);
+
+ mpz_mul (prod, op1, op2);
+
+ mpz_divexact (quot, prod, op2);
+ MPZ_CHECK_FORMAT (quot);
+
+ if (mpz_cmp (quot, op1) != 0)
+ {
+ printf ("Wrong results:\n");
+ mpz_trace (" got ", quot);
+ mpz_trace (" want ", op1);
+ mpz_trace (" dividend", prod);
+ mpz_trace (" divisor ", op2);
+ abort ();
+ }
+ }
+
+ mpz_clear (bs);
+ mpz_clear (op1);
+ mpz_clear (op2);
+ mpz_clear (prod);
+ mpz_clear (quot);
+
+ tests_end ();
+ exit (0);
+}