1 files changed, 35 insertions, 0 deletions
diff --git a/mysql/mysys/checksum.c b/mysql/mysys/checksum.c
new file mode 100644
index 0000000..87f3056
--- /dev/null
+++ b/mysql/mysys/checksum.c
@@ -0,0 +1,35 @@
+/* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+
+#include <my_global.h>
+#include <my_sys.h>
+#include <zlib.h>
+
+/*
+  Calculate a long checksum for a memoryblock.
+
+  SYNOPSIS
+    my_checksum()
+      crc       start value for crc
+      pos       pointer to memory block
+      length    length of the block
+*/
+
+ha_checksum my_checksum(ha_checksum crc, const uchar *pos, size_t length)
+{
+  return (ha_checksum)crc32((uint)crc, pos, (uint)length);
+}
+