ALL: Add flint

external/flint-2.4.3/fmpz_poly/realloc.c

@@ -0,0 +1,57 @@
+/*=============================================================================
+
+    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"
+
+void
+fmpz_poly_realloc(fmpz_poly_t poly, slong alloc)
+{
+    if (alloc == 0)             /* Clear up, reinitialise */
+    {
+        fmpz_poly_clear(poly);
+        fmpz_poly_init(poly);
+        return;
+    }
+
+    if (poly->alloc)            /* Realloc */
+    {
+        fmpz_poly_truncate(poly, alloc);
+
+        poly->coeffs = (fmpz *) flint_realloc(poly->coeffs, alloc * sizeof(fmpz));
+        if (alloc > poly->alloc)
+            flint_mpn_zero((mp_ptr) (poly->coeffs + poly->alloc),
+                     alloc - poly->alloc);
+    }
+    else                        /* Nothing allocated already so do it now */
+    {
+        poly->coeffs = (fmpz *) flint_calloc(alloc, sizeof(fmpz));
+    }
+
+    poly->alloc = alloc;
+}