header stuff

1 files changed, 10 insertions, 0 deletions

diff --git a/src/hash/sysvchecksum.h b/src/hash/sysvchecksum.h
index 8f27721..e45cff8 100644
--- a/src/hash/sysvchecksum.h
+++ b/src/hash/sysvchecksum.h
@@ -1,3 +1,13 @@
 #include "../lua.h"
+#include <stdint.h>
+
+/**
+ * calculates a sysv checksum of (len) bytes
+ *
+ * @param {uint8_t*} input bytes
+ * @param {size_t} input length
+ * @return {uint32_t} 32 bit checksum
+*/
+uint32_t i_sysvchecksum(uint8_t*, size_t);
 
 int l_sysvchecksum(lua_State*);