ALL: Add flint

external/flint-2.4.3/examples/fmpz_poly_factor_zassenhaus.cpp

@@ -0,0 +1,63 @@
+/*=============================================================================
+
+    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) 2011 Andy Novocin
+    Copyright (C) 2011 Sebastian Pancratz
+
+******************************************************************************/
+
+/*
+    Example program demonstrating the Zassenhaus factoring algorithm.
+*/
+
+#include <cstdio>
+#include "fmpz_polyxx.h"
+
+using namespace flint;
+using namespace std;
+
+int main()
+{
+    fmpz_polyxx f;
+
+    if (0)
+    {
+        // NB: this does not seem to work in the C version
+
+        FILE *polyfile;
+        polyfile = fopen("examples/fmpz_poly_hensel_P1", "r");
+
+        if (!polyfile)
+        {
+            flint_printf("Error.  Could not read P1 from file.\n");
+            abort();
+        }
+        read(polyfile, f);
+    }
+    else
+        f =  "63  1 1 1 -4 -7 -2 -6 -3 -7 18 7 25 -11 95 36 21 16 69 56 35 36 32 33 26 -26 -15 -14 -53 -96 67 72 -67 40 -79 -116 -452 -312 -260 -29 -1393 327 69 -28 -241 230 -54 -309 -125 -74 -450 -69 -3 66 -27 73 68 50 -63 -1290 372 31 -16 2";
+
+    flint_printf("Polynomial:\n");print(f);
+    flint_printf("\nFactorisation:\n");print(factor_zassenhaus(f));
+
+    return 0;
+}
+