Add a bunch of C header samples for the Bayesian classifier

samples/C/bitmap.h

@@ -0,0 +1,47 @@
+#pragma once
+
+/* Copyright © 2010 Christoph Sünderhauf
+ *
+ * This file is part of Xelix.
+ *
+ * Xelix 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 your option) any later version.
+ *
+ * Xelix 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 Xelix.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "generic.h"
+
+typedef struct {
+	uint32_t numbits;
+	/* an array large enough for numbits to fit in. Might 
+	 * (if numbits%8!=0) have some spare bits at the end
+	 */
+	uint32_t* bits;
+} bitmap_t;
+
+
+// creates a new bitmap.
+// CONTENT IS RANDOM!  - use bitmap_clearall() to clear the bitmap.
+bitmap_t bitmap_init(uint32_t numbits);
+
+// returns 1 or 0
+uint8_t bitmap_get(bitmap_t bitmap, uint32_t bitnum);
+// sets a bit (to 1)
+void bitmap_set(bitmap_t bitmap, uint32_t bitnum);
+// clears a bit (to 0)
+void bitmap_clear(bitmap_t bitmap, uint32_t bitnum);
+
+// clears every bit to 0
+void bitmap_clearAll(bitmap_t bitmap);
+
+// finds the first bit set to 0    returns 0 if no cleared bit found (0 is also returned if the first bit is cleared)
+uint32_t bitmap_findFirstClear(bitmap_t bitmap);