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author | Karen Arutyunov <karen@codesynthesis.com> | 2017-11-02 23:11:29 +0300 |
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committer | Karen Arutyunov <karen@codesynthesis.com> | 2017-11-21 13:51:37 +0300 |
commit | b1471ebbe9db90c472ff356bea6a7c8aedb45db9 (patch) | |
tree | a3494b3c2ca9a3529588c4da6e52d9040722a404 /mysql/mysys/checksum.c | |
parent | 4bce3c574df293415c7b2f45b9c2951262fe3412 (diff) |
Add implementation
Diffstat (limited to 'mysql/mysys/checksum.c')
-rw-r--r-- | mysql/mysys/checksum.c | 35 |
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); +} + |