ALL: Add flint

external/flint-2.4.3/nmod_poly/shift_left.c

@@ -0,0 +1,45 @@
+/*=============================================================================
+
+    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 "nmod_vec.h"
+#include "nmod_poly.h"
+
+void _nmod_poly_shift_left(mp_ptr res, mp_srcptr poly, slong len, slong k)
+{
+    flint_mpn_copyd(res + k, poly, len);
+    flint_mpn_zero(res, k);
+}
+
+void nmod_poly_shift_left(nmod_poly_t res, const nmod_poly_t poly, slong k)
+{
+    nmod_poly_fit_length(res, poly->length + k);
+   
+    _nmod_poly_shift_left(res->coeffs, poly->coeffs, poly->length, k);
+   
+    res->length = poly->length + k;
+}
+