ALL: Add flint

external/flint-2.4.3/nmod_poly/realloc.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) 2007, David Howden.
+    Copyright (C) 2010 William Hart
+
+******************************************************************************/
+
+#include <gmp.h>
+#include <stdlib.h>
+#include "flint.h"
+#include "ulong_extras.h"
+#include "nmod_poly.h"
+
+void
+nmod_poly_realloc(nmod_poly_t poly, slong alloc)
+{
+    if (alloc == 0)
+    {
+        nmod_poly_clear(poly);
+        poly->length = 0;
+        poly->alloc = 0;
+        poly->coeffs = NULL;
+
+        return;
+    }
+
+    poly->coeffs = (mp_ptr) flint_realloc(poly->coeffs, alloc * sizeof(mp_limb_t));
+
+    poly->alloc = alloc;
+
+    /* truncate poly if necessary */
+    if (poly->length > alloc)
+    {
+        poly->length = alloc;
+        _nmod_poly_normalise(poly);
+    }
+}