header stuff

1 files changed, 28 insertions, 0 deletions

diff --git a/src/hash/crc.h b/src/hash/crc.h
index d380235..de61efd 100644
--- a/src/hash/crc.h
+++ b/src/hash/crc.h
@@ -1,4 +1,32 @@
 #include "../lua.h"
+#include <stdint.h>
+
+/**
+ * calculates a crc of (len) bytes
+ *
+ * @param {uint8_t*} input bytes
+ * @param {size_t} input length
+ * @return {uint8_t} 8 bit checksum
+*/
+uint8_t i_crc8(uint8_t*, size_t);
+
+/**
+ * calculates a crc of (len) bytes
+ *
+ * @param {uint8_t*} input bytes
+ * @param {size_t} input length
+ * @return {uint16_t} 16 bit checksum
+*/
+uint16_t i_crc16(uint8_t*, size_t);
+
+/**
+ * calculates a crc of (len) bytes
+ *
+ * @param {uint8_t*} input bytes
+ * @param {size_t} input length
+ * @return {uint32_t} 32 bit checksum
+*/
+uint32_t i_crc32(uint8_t*, size_t);
 
 int l_crc8(lua_State*);
 int l_crc16(lua_State*);