Add hash macro fn

2019-02-04 16:57:29 +09:00 · 2019-02-04 16:57:29 +09:00 · 2d7d27722c
parent 884a262f93
commit 2d7d27722c
1 changed files with 14 additions and 0 deletions
--- a/src/UDPC_Defines.h
+++ b/src/UDPC_Defines.h
@ -49,4 +49,18 @@ static const char *UDPC_ERR_THREADFAIL_STR = "Failed to create thread";

 #define UDPC_PACKET_MAX_SIZE 8192

+// 5 8 2 7 3 6 1
+// 3 2 5 1 8 7 6
+#define UDPC_HASH32(x) ( \
+    ( \
+      ((x & 0xF8000000) >> 5) \
+      ((x & 0x07F80000) >> 6) \
+      ((x & 0x00060000) << 10) \
+      ((x & 0x0001FC00) >> 4) \
+      ((x & 0x00000380) << 22) \
+      ((x & 0x0000007E) >> 1) \
+      ((x & 0x00000001) << 21) \
+    ) ^ 0x96969696 \
+)
+
 #endif