From 11da511c784eca003deb90c23570f0873954e0de Mon Sep 17 00:00:00 2001
From: Duncan Wilkie <antigravityd@gmail.com>
Date: Sat, 18 Nov 2023 06:11:09 -0600
Subject: Initial commit.

---
 gmp-6.3.0/tests/mpq/t-cmp_z.c | 146 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 146 insertions(+)
 create mode 100644 gmp-6.3.0/tests/mpq/t-cmp_z.c

(limited to 'gmp-6.3.0/tests/mpq/t-cmp_z.c')

diff --git a/gmp-6.3.0/tests/mpq/t-cmp_z.c b/gmp-6.3.0/tests/mpq/t-cmp_z.c
new file mode 100644
index 0000000..3e66a3c
--- /dev/null
+++ b/gmp-6.3.0/tests/mpq/t-cmp_z.c
@@ -0,0 +1,146 @@
+/* Test mpq_cmp_z.
+
+Copyright 1996, 2001, 2015 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 <stdio.h>
+#include <stdlib.h>
+
+#include "gmp-impl.h"
+#include "tests.h"
+
+#define SGN(x) ((x) < 0 ? -1 : (x) > 0 ? 1 : 0)
+
+int
+ref_mpq_cmp_z (mpq_t a, mpz_t b)
+{
+  mpz_t bi;
+  int cc;
+
+  mpz_init (bi);
+
+  mpz_mul (bi, b, DEN (a));
+  cc = mpz_cmp (NUM (a), bi);
+  mpz_clear (bi);
+  return cc;
+}
+
+#ifndef SIZE
+#define SIZE 8	/* increasing this lowers the probability of finding an error */
+#endif
+
+#ifndef MAXN
+#define MAXN 5	/* increasing this impatcs on total timing */
+#endif
+
+void
+sizes_test (int m)
+{
+  mpq_t a;
+  mpz_t b;
+  int i, j, k, s;
+  int cc, ccref;
+
+  mpq_init (a);
+  mpz_init (b);
+
+  for (i = 0; i <= MAXN ; ++i)
+    {
+      mpz_setbit (DEN (a), i*m); /* \sum_0^i 2^(i*m) */
+      for (j = 0; j <= MAXN; ++j)
+	{
+	  mpz_set_ui (NUM (a), 0);
+	  mpz_setbit (NUM (a), j*m); /* 2^(j*m) */
+	  for (k = 0; k <= MAXN; ++k)
+	    {
+	      mpz_set_ui (b, 0);
+	      mpz_setbit (b, k*m); /* 2^(k*m) */
+	      if (i == 0) /* Denominator is 1, compare the two exponents */
+		ccref = (j>k)-(j<k);
+	      else
+		ccref = j-i > k ? 1 : -1;
+	      for (s = 1; s >= -1; s -= 2)
+		{
+		  cc = mpq_cmp_z (a, b);
+
+		  if (ccref != SGN (cc))
+		    {
+		      fprintf (stderr, "i=%i, j=%i, k=%i, m=%i, s=%i\n; ccref= %i, cc= %i\n", i, j, k, m, s, ccref, cc);
+		      abort ();
+		    }
+
+		  mpq_neg (a, a);
+		  mpz_neg (b, b);
+		  ccref = - ccref;
+		}
+	    }
+	}
+    }
+
+  mpq_clear (a);
+  mpz_clear (b);
+}
+
+int
+main (int argc, char **argv)
+{
+  mpq_t a;
+  mpz_t 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);
+  mpz_init (b);
+
+  for (i = 0; i < reps; i++)
+    {
+      if (i % 8192 == 0)
+	sizes_test (urandom () % (i + 1) + 1);
+      size = urandom () % SIZE - SIZE/2;
+      mpz_random2 (NUM (a), size);
+      do
+	{
+	  size = urandom () % (SIZE/2);
+	  mpz_random2 (DEN (a), size);
+	}
+      while (mpz_cmp_ui (DEN (a), 0) == 0);
+
+      size = urandom () % SIZE - SIZE/2;
+      mpz_random2 (b, size);
+
+      mpq_canonicalize (a);
+
+      ccref = ref_mpq_cmp_z (a, b);
+      cc = mpq_cmp_z (a, b);
+
+      if (SGN (ccref) != SGN (cc))
+	abort ();
+    }
+
+  mpq_clear (a);
+  mpz_clear (b);
+
+  tests_end ();
+  exit (0);
+}
-- 
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