Temporary commit of merge of MariaDB 10.0-base and MySQL 5.6

1 files changed, 48 insertions, 0 deletions

diff --git a/storage/innobase/include/ut0crc32.h b/storage/innobase/include/ut0crc32.h
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+/*****************************************************************************
+
+Copyright (c) 2011, 2011, 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 Street, Suite 500, Boston, MA 02110-1335 USA
+
+*****************************************************************************/
+
+/**************************************************//**
+@file include/ut0crc32.h
+CRC32 implementation
+
+Created Aug 10, 2011 Vasil Dimov
+*******************************************************/
+
+#ifndef ut0crc32_h
+#define ut0crc32_h
+
+#include "univ.i"
+
+/********************************************************************//**
+Initializes the data structures used by ut_crc32(). Does not do any
+allocations, would not hurt if called twice, but would be pointless. */
+UNIV_INTERN
+void
+ut_crc32_init();
+/*===========*/
+
+/********************************************************************//**
+Calculates CRC32.
+@param ptr	- data over which to calculate CRC32.
+@param len	- data length in bytes.
+@return CRC32 (CRC-32C, using the GF(2) primitive polynomial 0x11EDC6F41,
+or 0x1EDC6F41 without the high-order bit) */
+typedef ib_uint32_t (*ib_ut_crc32_t)(const byte* ptr, ulint len);
+
+extern ib_ut_crc32_t	ut_crc32;
+#endif /* ut0crc32_h */