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			memswap.c
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<pre>
/*====================================================================*
 *
 *   void memswap (void * memory1,  void * memory2, size_t extent);
 *
 *   memory.h
 *
 *   exchange the contents of one memory region with that of another;
 *   return no value;
 *
 *   one application for this function is to exchange the source and
 *   destination addresses in an Ethernet frame to form a response
 *   message;
 *
 *   Motley Tools by Charles Maier &lt;cmaier@cmassoc.net&gt;;
 *   Copyright (c) 2001-2006 by Charles Maier Associates;
 *   Licensed under the Internet Software Consortium License;
 *
 *--------------------------------------------------------------------*/

#ifndef MEMSWAP_SOURCE
#define MEMSWAP_SOURCE

#include &quot;../tools/memory.h&quot;

void memswap (void * memory1, void * memory2, size_t extent)

{
	register byte * byte1 = (byte *)(memory1);
	register byte * byte2 = (byte *)(memory2);
	if (memory1 != memory2) while (extent--)
	{
		byte byte = *byte1;
		*byte1++ = *byte2;
		*byte2++ = byte;
	}
	return;
}

#endif


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