--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/interps/cfunge/cfunge-src/src/vector.h	Sun Dec 09 19:30:08 2012 +0000
@@ -0,0 +1,52 @@
+/* -*- mode: C; coding: utf-8; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*-
+ *
+ * cfunge - A standard-conforming Befunge93/98/109 interpreter in C.
+ * Copyright (C) 2008-2009 Arvid Norlander <anmaster AT tele2 DOT se>
+ *
+ * This program 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 3 of the License, or
+ * (at the proxy's option) any later version. Arvid Norlander is a
+ * proxy who can decide which future versions of the GNU General Public
+ * License can be used.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+/**
+ * @file
+ * Definition of, and functions for, a Funge vector.
+ */
+#ifndef FUNGE_HAD_SRC_VECTOR_H
+#define FUNGE_HAD_SRC_VECTOR_H
+
+#include "global.h"
+
+#include <stdbool.h>
+
+/// A vector in Funge-Space
+typedef struct s_funge_vector {
+	funge_cell x; ///< You should be able to guess what this is.
+	funge_cell y; ///< You should be able to guess what this is.
+} funge_vector;
+
+/// Useful to create a vector in a list of parameter for example.
+/// The vector is created on the stack.
+/// @param a This should be the x value.
+/// @param b This should be the y value.
+/// @return A pointer to a vector allocated on the stack, so no need to free it.
+#define vector_create_ref(a, b) (& (funge_vector) { .x = (a), .y = (b) })
+
+/**
+ * Checks if vector is cardinal (as in ^>v<).
+ * @param v The vector to check.
+ */
+FUNGE_ATTR_PURE FUNGE_ATTR_FAST FUNGE_ATTR_WARN_UNUSED
+bool vector_is_cardinal(const funge_vector * restrict v);
+
+#endif