added support for MINMATCH=3 on big endian architecture

changed ZSTD_HASHLOG3_MIN to 2 (4 bytes for MINMACH > 3)
2016-03-07 10:07:08 +01:00
parent 89c9e1a847
commit e2446b0e36
4 changed files with 22 additions and 21 deletions
@@ -187,17 +187,6 @@ MEM_STATIC void MEM_write64(void* memPtr, U64 value)

 #endif /* MEM_FORCE_MEMORY_ACCESS */

-
-MEM_STATIC U32 MEM_readMINMATCH(const void* memPtr, U32 length)
-{
-    switch (length)
-    {
-    default :
-    case 4 : return MEM_read32(memPtr);
-    case 3 : return MEM_read32(memPtr)<<8;
-    }
-}
-
 MEM_STATIC U16 MEM_readLE16(const void* memPtr)
 {
    if (MEM_isLittleEndian())
@@ -286,6 +275,20 @@ MEM_STATIC void MEM_writeLEST(void* memPtr, size_t val)
        MEM_writeLE64(memPtr, (U64)val);
 }

+ /* function safe only for comparisons */
+MEM_STATIC U32 MEM_readMINMATCH(const void* memPtr, U32 length)
+{
+    switch (length)
+    {
+    default :
+    case 4 : return MEM_read32(memPtr);
+    case 3 : if (MEM_isLittleEndian())
+                return MEM_read32(memPtr)<<8;
+             else
+                return MEM_read32(memPtr)>>8;
+    }
+}
+
 #if defined (__cplusplus)
 }
 #endif