ALL: Add flint

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

@@ -0,0 +1,56 @@
+/*=============================================================================
+
+    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) 2010 Fredrik Johansson
+
+******************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "flint.h"
+#include "ulong_extras.h"
+
+int main(void)
+{
+    int n, k, t;
+
+    FLINT_TEST_INIT(state);
+
+    flint_printf("euler_phi....");
+    fflush(stdout);
+
+    for (n = 0; n < 20 * flint_test_multiplier(); n++)
+    {
+        t = 0;
+        for (k = 1; k <= n; k++)
+            t += (n_gcd(n, k) == 1);
+        if (t != n_euler_phi(n))
+        {
+            flint_printf("FAIL:\n");
+            flint_printf("phi(%d) = %d, got %wu\n", n, t, n_euler_phi(n)); 
+            abort();
+        }
+    }
+
+    FLINT_TEST_CLEANUP(state);
+    flint_printf("PASS\n");
+    return 0;
+}