ALL: Add flint

external/flint-2.4.3/ulong_extras/test/t-mod2_preinv.c

@@ -0,0 +1,67 @@
+/*=============================================================================
+
+    This file is part of FLINT.
+
+    FLINT 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 of the License, or
+    (at your option) any later version.
+
+    FLINT 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 FLINT; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+
+=============================================================================*/
+/******************************************************************************
+
+    Copyright (C) 2009 William Hart
+
+******************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <gmp.h>
+#include "flint.h"
+#include "ulong_extras.h"
+
+int main(void)
+{
+   int i, result;
+   FLINT_TEST_INIT(state);
+   
+
+   flint_printf("mod2_preinv....");
+   fflush(stdout);
+
+   for (i = 0; i < 100000 * flint_test_multiplier(); i++)
+   {
+      mp_limb_t d, dinv, n, r1, r2;
+
+      d = n_randtest_not_zero(state);
+      n = n_randtest(state);
+      
+      dinv = n_preinvert_limb(d);
+
+      r1 = n_mod2_preinv(n, d, dinv);
+      r2 = n%d;
+
+      result = (r1 == r2);
+      if (!result)
+      {
+         flint_printf("FAIL:\n");
+         flint_printf("n = %wu, d = %wu, dinv = %wu\n", n, d, dinv); 
+         flint_printf("r1 = %wu, r2 = %wu\n", r1, r2);
+         abort();
+      }
+   }
+
+   FLINT_TEST_CLEANUP(state);
+   
+   flint_printf("PASS\n");
+   return 0;
+}