Mercurial > hg > ucx / file diff

--- a/src/cx/hash_key.h	Sun Nov 06 14:46:59 2022 +0100
+++ b/src/cx/hash_key.h	Sun Nov 06 16:07:32 2022 +0100
@@ -69,11 +69,13 @@
 typedef struct cx_hash_key_s CxHashKey;
 
 /**
- * Computes a murmur hash-2.
+ * Computes a murmur2 32 bit hash.
  *
- * You need to initialize data and len in the key struct.
+ * You need to initialize \c data and \c len in the key struct.
  * The hash is then directly written to that struct.
  *
+ * \note If \c data is \c NULL, the hash is defined as 1574210520.
+ *
  * @param key the key, the hash shall be computed for
  */
 void cx_hash_murmur(CxHashKey *key);