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			codename.c
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<pre>
/*====================================================================*
 *
 *   char const * codename (struct _code_ const list [], size_t size, code_t code, char const * name);
 *
 *   symbol.h
 *
 *   return the name associated with a given code by searching a name
 *   table arranged in ascending order by code; return the table name
 *   if the code is found or argument name if not;
 *
 *   typedefs code_t and struct _code_ are defined in codes.h;
 *
 *   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 CODENAME_SOURCE
#define CODENAME_SOURCE

#include &lt;unistd.h&gt;

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

char const * codename (struct _code_ const list [], size_t size, code_t code, char const * name)

{
	size_t lower = 0;
	size_t upper = size;
	while (lower &lt; upper)
	{
		size_t index = (lower + upper) &gt;&gt; 1;
		signed order = code - list [index].code;
		if (order &lt; 0)
		{
			upper = index - 0;
			continue;
		}
		if (order &gt; 0)
		{
			lower = index + 1;
			continue;
		}
		return (list [index].name);
	}
	return (name);
}

#endif


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