ALL: Add flint

external/flint-2.4.3/fmpz/complement.c

@@ -0,0 +1,55 @@
+/*=============================================================================
+
+    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) 2012 Thomas M. DuBuisson
+
+******************************************************************************/
+
+#include "fmpz.h"
+
+void fmpz_complement(fmpz_t r, const fmpz_t f)
+{
+    if (!COEFF_IS_MPZ(*f)) /* f is small */
+    {
+	slong res = ~(*f);
+	fmpz_set_si(r, res);
+    } else /* f is big */
+    {
+        if(r != f) { /* not aliased */
+            __mpz_struct *ptr, *ptr2;
+            ptr = _fmpz_promote(r);
+            ptr2 = COEFF_TO_PTR(*f);
+            mpz_com(ptr, ptr2);
+            _fmpz_demote_val(r);
+        } else { /* alaised */
+            fmpz_t tmp;
+            __mpz_struct *ptr, *ptr2;
+            fmpz_init(tmp);
+            ptr = _fmpz_promote(tmp);
+            ptr2 = COEFF_TO_PTR(*f);
+            mpz_com(ptr, ptr2);
+            _fmpz_demote_val(tmp);
+            fmpz_set(r,tmp);
+            fmpz_clear(tmp);
+        }
+    }
+}
+