52 lines
1.9 KiB
C++
52 lines
1.9 KiB
C++
/* Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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Without limiting anything contained in the foregoing, this file,
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which is part of C Driver for MySQL (Connector/C), is also subject to the
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Universal FOSS Exception, version 1.0, a copy of which can be found at
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http://oss.oracle.com/licenses/universal-foss-exception.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/**
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@file mysys/checksum.cc
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*/
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#include <stddef.h>
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#include <sys/types.h>
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#include <zlib.h>
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#include "my_inttypes.h"
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#include "my_sys.h"
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/*
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Calculate a long checksum for a memoryblock.
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SYNOPSIS
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my_checksum()
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crc start value for crc
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pos pointer to memory block
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length length of the block
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*/
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ha_checksum my_checksum(ha_checksum crc, const uchar *pos, size_t length) {
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return (ha_checksum)crc32((uint)crc, pos, (uint)length);
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}
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