ALL: Add flint

external/flint-2.4.3/fmpz_poly/2norm_normalised_bits.c

@@ -0,0 +1,44 @@
+/*=============================================================================
+
+    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) 2008, 2009 William Hart
+   
+******************************************************************************/
+
+#include <gmp.h>
+#include <stdlib.h>
+#include "flint.h"
+#include "fmpz.h"
+#include "fmpz_poly.h"
+
+mp_bitcnt_t _fmpz_poly_2norm_normalised_bits(const fmpz * poly, slong len)
+{
+   fmpz_t norm;
+   mp_bitcnt_t bits;
+   fmpz_init(norm);
+
+	_fmpz_poly_2norm(norm, poly, len);
+
+	bits = fmpz_bits(norm);
+	fmpz_clear(norm);
+   
+   return bits - fmpz_bits(poly + len - 1) + 1;
+}