Consider the case where len is 128 (thanks @reissGRVS)

LordOfXen · web-flow · commit 3ef18a9408bd · 2025-08-29T17:08:08.000-07:00
Signed-off-by: Xen &lt;lordofxen@deskasoft.com&gt;
diff --git a/HashifyNet/Algorithms/CityHash/CityHash_Implementation.cs b/HashifyNet/Algorithms/CityHash/CityHash_Implementation.cs
@@ -487,7 +487,7 @@ private UInt64 Hash64Len65Plus(ArraySegment<byte> data, CancellationToken cancel
 			x = (x * K1) + BitConverter.ToUInt64(dataArray, 0);
 
 			// For each 64-byte chunk
-			var groupEndOffset = dataOffset + (dataCount - (dataCount % 64));
+			var groupEndOffset = dataOffset + ((dataCount - 1) - ((dataCount - 1) % 64));
 
 			for (var currentOffset = dataOffset; currentOffset < groupEndOffset; currentOffset += 64)
 			{
@@ -796,4 +796,5 @@ private static UInt64 ReverseByteOrder(UInt64 operand)
 		}
 		#endregion
 	}
-}
+
+}

Original file line number	Diff line number	Diff line change
`@@ -487,7 +487,7 @@ private UInt64 Hash64Len65Plus(ArraySegment<byte> data, CancellationToken cancel`
`487`	`487`	`x = (x * K1) + BitConverter.ToUInt64(dataArray, 0);`
`488`	`488`
`489`	`489`	`// For each 64-byte chunk`
`490`		`- var groupEndOffset = dataOffset + (dataCount - (dataCount % 64));`
	`490`	`+ var groupEndOffset = dataOffset + ((dataCount - 1) - ((dataCount - 1) % 64));`
`491`	`491`
`492`	`492`	`for (var currentOffset = dataOffset; currentOffset < groupEndOffset; currentOffset += 64)`
`493`	`493`	`{`
`@@ -796,4 +796,5 @@ private static UInt64 ReverseByteOrder(UInt64 operand)`
`796`	`796`	`}`
`797`	`797`	`#endregion`
`798`	`798`	`}`
`799`		`-}`
	`799`	`+`
	`800`	`+}`