GNU MP (Multiprecision) library. This is needed by secure RPC (being

done by Bill Paul) and various other BSD programs.
Obtained from:FSF

1 files changed, 97 insertions, 0 deletions

diff --git a/gnu/lib/libgmp/tests/tst-sqrtrem.c b/gnu/lib/libgmp/tests/tst-sqrtrem.c
new file mode 100644
index 0000000..b62350a
--- /dev/null
+++ b/gnu/lib/libgmp/tests/tst-sqrtrem.c
@@ -0,0 +1,97 @@
+/* Test mpz_add, mpz_add_ui, mpz_cmp, mpz_cmp, mpz_mul, mpz_sqrtrem.
+
+Copyright (C) 1991, 1993 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 General Public License as published by
+the Free Software Foundation; either version 2, 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with the GNU MP Library; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include <stdio.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "urandom.h"
+
+void debug_mp ();
+
+#ifndef SIZE
+#define SIZE 8
+#endif
+
+main (argc, argv)
+     int argc;
+     char **argv;
+{
+  MP_INT x2;
+  MP_INT x, rem;
+  MP_INT temp, temp2;
+  mp_size x2_size;
+  int i;
+  int reps = 100000;
+
+  if (argc == 2)
+     reps = atoi (argv[1]);
+
+  mpz_init (&x2);
+  mpz_init (&x);
+  mpz_init (&rem);
+  mpz_init (&temp);
+  mpz_init (&temp2);
+
+  for (i = 0; i < reps; i++)
+    {
+      x2_size = urandom () % SIZE;
+
+      mpz_random2 (&x2, x2_size);
+
+      mpz_sqrtrem (&x, &rem, &x2);
+      mpz_mul (&temp, &x, &x);
+
+      /* Is square of result > argument?  */
+      if (mpz_cmp (&temp, &x2) > 0)
+	dump_abort (&x2, &x, &rem);
+
+      mpz_add_ui (&temp2, &x, 1);
+      mpz_mul (&temp2, &temp2, &temp2);
+
+      /* Is square of (result + 1) <= argument?  */
+      if (mpz_cmp (&temp2, &x2) <= 0)
+	dump_abort (&x2, &x, &rem);
+
+      mpz_add (&temp2, &temp, &rem);
+
+      /* Is the remainder wrong?  */
+      if (mpz_cmp (&x2, &temp2) != 0)
+	dump_abort (&x2, &x, &rem);
+    }
+
+  exit (0);
+}
+
+dump_abort (x2, x, rem)
+     MP_INT *x2, *x, *rem;
+{
+  fprintf (stderr, "ERROR\n");
+  fprintf (stderr, "x2        = "); debug_mp (x2, -16);
+  fprintf (stderr, "x         = "); debug_mp (x, -16);
+  fprintf (stderr, "remainder = "); debug_mp (rem, -16);
+  abort();
+}
+
+void
+debug_mp (x, base)
+     MP_INT *x;
+{
+  mpz_out_str (stderr, base, x); fputc ('\n', stderr);
+}