littobig.cpp
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上传日期:2007-06-06
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文件大小:3k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "littobig.h"
- #include "hlxclib/string.h"
- #include "hxheap.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- #ifndef CLittleEndianToBigEndian_INLINE
- //
- // By Default the class is setup to be non big endian.
- //
- BOOL CLittleEndianToBigEndian::mBigEndian=FALSE;
- //
- // Make sure we run the TestBigEndian function.
- //
- BOOL CLittleEndianToBigEndian::mInitialized=FALSE;
- //
- // Checks to see if the machine is little endian or big endian.
- //
- #define bigendiantest 0x0001
- BOOL CLittleEndianToBigEndian::TestBigEndian(void)
- {
- BOOL rc = FALSE;
- UINT16 test=bigendiantest;
- UCHAR* bytes=(UCHAR*)&test;
- if (bytes[0] == 0)
- {
- rc = TRUE;
- }
-
- return rc;
- }
- void CLittleEndianToBigEndian::ReverseWORD(UINT16& w)
- {
- if (mInitialized == FALSE)
- {
- mBigEndian = TestBigEndian();
- }
- if (mBigEndian)
- {
- UCHAR* bytes;
- bytes=(UCHAR*)&w;
- //
- // flip bytes around.
- //
- UCHAR tempbyte=bytes[0];
- bytes[0]=bytes[1];
- bytes[1]=tempbyte;
- }
- }
- void CLittleEndianToBigEndian::ReverseDWORD(ULONG32& dw)
- {
- if (mInitialized==FALSE)
- {
- mBigEndian = TestBigEndian();
- }
- if (mBigEndian)
- {
- UCHAR* bytes;
- UCHAR newbytes[4];
- bytes=(UCHAR*)&dw;
- //
- // reverse the bytes in the long
- //
- newbytes[0]=bytes[3];
- newbytes[1]=bytes[2];
- newbytes[2]=bytes[1];
- newbytes[3]=bytes[0];
- ::memcpy(bytes,newbytes,sizeof(ULONG32)); /* Flawfinder: ignore */
- }
- }
- #endif // !defined CLittleEndianToBigEndian_INLINE