Imported gcc-4.4.3

[msp430-gcc.git] / gmp / tests / mpq / t-cmp.c

diff --git a/gmp/tests/mpq/t-cmp.c b/gmp/tests/mpq/t-cmp.c
new file mode 100644 (file)
index 0000000..ac0dc72
--- /dev/null
+++ b/gmp/tests/mpq/t-cmp.c
@@ -0,0 +1,105 @@
+/* Test mpq_cmp.
+
+Copyright 1996, 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"
+
+#define NUM(x) (&((x)->_mp_num))
+#define DEN(x) (&((x)->_mp_den))
+
+#define SGN(x) ((x) < 0 ? -1 : (x) > 0 ? 1 : 0)
+
+int
+ref_mpq_cmp (mpq_t a, mpq_t b)
+{
+  mpz_t ai, bi;
+  int cc;
+
+  mpz_init (ai);
+  mpz_init (bi);
+
+  mpz_mul (ai, NUM (a), DEN (b));
+  mpz_mul (bi, NUM (b), DEN (a));
+  cc = mpz_cmp (ai, bi);
+  mpz_clear (ai);
+  mpz_clear (bi);
+  return cc;
+}
+
+#ifndef SIZE
+#define SIZE 8 /* increasing this lowers the probabilty of finding an error */
+#endif
+
+int
+main (int argc, char **argv)
+{
+  mpq_t a, b;
+  mp_size_t size;
+  int reps = 10000;
+  int i;
+  int cc, ccref;
+
+  tests_start ();
+
+  if (argc == 2)
+     reps = atoi (argv[1]);
+
+  mpq_init (a);
+  mpq_init (b);
+
+  for (i = 0; i < reps; i++)
+    {
+      size = urandom () % SIZE - SIZE/2;
+      mpz_random2 (NUM (a), size);
+      do
+       {
+         size = urandom () % SIZE - SIZE/2;
+         mpz_random2 (DEN (a), size);
+       }
+      while (mpz_cmp_ui (DEN (a), 0) == 0);
+
+      size = urandom () % SIZE - SIZE/2;
+      mpz_random2 (NUM (b), size);
+      do
+       {
+         size = urandom () % SIZE - SIZE/2;
+         mpz_random2 (DEN (b), size);
+       }
+      while (mpz_cmp_ui (DEN (b), 0) == 0);
+
+      mpq_canonicalize (a);
+      mpq_canonicalize (b);
+
+      ccref = ref_mpq_cmp (a, b);
+      cc = mpq_cmp (a, b);
+
+      if (SGN (ccref) != SGN (cc))
+       abort ();
+    }
+
+  mpq_clear (a);
+  mpq_clear (b);
+
+  tests_end ();
+  exit (0);
+}