testing hash

2026-07-02 15:19:31 +03:00
parent ab619909d9
commit 4a1e0bb078
33 changed files with 2356 additions and 0 deletions
@@ -0,0 +1,46 @@
+#include "hash.h"
+
+#include <stddef.h>
+
+#define JOAAT_SEED 0x9e3779b9u
+
+uint32_t joaat_hash_bytes(const void *data, size_t len)
+{
+    uint32_t hash = JOAAT_SEED;
+    const unsigned char *p = (const unsigned char *)data;
+
+    while (len-- > 0) {
+        hash += *p++;
+        hash += (hash << 10);
+        hash ^= (hash >> 6);
+    }
+
+    hash += (hash << 3);
+    hash ^= (hash >> 11);
+    hash += (hash << 15);
+
+    return hash;
+}
+
+uint32_t joaat_hash(const char *str)
+{
+    uint32_t hash = JOAAT_SEED;
+    const unsigned char *p = (const unsigned char *)str;
+
+    while (*p) {
+        hash += *p++;
+        hash += (hash << 10);
+        hash ^= (hash >> 6);
+    }
+
+    hash += (hash << 3);
+    hash ^= (hash >> 11);
+    hash += (hash << 15);
+
+    return hash;
+}
+
+unsigned int hash(const char *str)
+{
+    return (unsigned int)joaat_hash(str);
+}