ALL: Add flint

external/flint-2.4.3/fmpz_vec/max_bits_ref.c

@@ -0,0 +1,46 @@
+/*=============================================================================
+
+    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 William Hart
+
+******************************************************************************/
+
+#include <gmp.h>
+#include "flint.h"
+#include "fmpz.h"
+#include "fmpz_vec.h"
+
+slong
+_fmpz_vec_max_bits_ref(const fmpz * vec, slong len)
+{
+    slong i, bits, max_bits = 0, sign = 1;
+
+    for (i = 0; i < len; i++)
+    {
+        bits = fmpz_bits(vec + i);
+        if (bits > max_bits)
+            max_bits = bits;
+        if (fmpz_sgn(vec + i) < 0)
+            sign = WORD(-1);
+    }
+
+    return max_bits * sign;
+}