lib: Move CRC32 implementation to library

The CRC32 implementation will be used to ID objects in the RIB.

1 files changed, 33 insertions, 0 deletions

diff --git a/include/ouroboros/crc32.h b/include/ouroboros/crc32.h
new file mode 100644
index 00000000..3c7721de
--- /dev/null
+++ b/include/ouroboros/crc32.h
@@ -0,0 +1,33 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2017
+ *
+ * 32-bit Cyclic Redundancy Check
+ *
+ *    Sander Vrijders   <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * version 2.1 as published by the Free Software Foundation.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#ifndef OUROBOROS_CRC32_H
+#define OUROBOROS_CRC32_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+void crc32(uint32_t *   crc,
+           const void * buf,
+           size_t       len);
+
+#endif /* OUROBOROS_CRC32_H */