csu3_am335x/EVSE/GPL/plc-utils.LNX.2.1.20/source/tools/codename.c

/*====================================================================*
 *
 *   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 <cmaier@cmassoc.net>;
 *   Copyright (c) 2001-2006 by Charles Maier Associates;
 *   Licensed under the Internet Software Consortium License;
 *
 *--------------------------------------------------------------------*/

#ifndef CODENAME_SOURCE
#define CODENAME_SOURCE

#include <unistd.h>

#include "../tools/symbol.h"

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 < upper) 
	{ 
		size_t index = (lower +  upper) >> 1; 
		signed order = code - list [index].code; 
		if (order < 0) 
		{ 
			upper = index - 0; 
			continue; 
		} 
		if (order > 0) 
		{ 
			lower = index +  1; 
			continue; 
		} 
		return (list [index].name); 
	} 
	return (name); 
} 

#endif