/* char	*ErrorName(dst,	num);
 *
 * ARGUMENT
 *	char	*pDst;
 *	int	num;
 *
 * DESCRIPTION
 *	This function copies the string	name corresponding to a	given
 *   error number into dst.  dst must be character array allocated to have
 *   at	least 15 characters.
 *
 * SIDE	EFFECTS
 *	None.
 *
 * RETURNS
 *	dst if successful, otherwise NULL.
 *
 * POSSIBLE ERROR CODES
 *
 *	GM_NULLSTRING
 *	GM_ARGVAL
 *
 * AUTHOR
 *  Don	Killen	 11-Jan-1988  19:29:08
 *   Copyright (C) 1988-1990 Greenleaf Software	Inc.  All rights reserved.
 *
 * MODIFICATIONS
 *
 *
 */
#include <stdio.h>
#include <string.h>
#include "gmsystem.h"

char	*ErrorName(dst,	num)
char	*dst;
int	num;
{
	static char *codes[]={ "GM_SUCCESS","GM_NULLPOINTER",
	"GM_NULLSTRING","GM_INIT",
	"GM_OVERFLOW","GM_UNDERFLOW",
	"GM_NAN","GM_CNVRE","GM_CNVRW","GM_DIV0","GM_PWR0","GM_IMAG",
	"GM_NOMEMORY","GM_INVALIDID","GM_NOTFOUND","GM_ARGVAL",
	"GM_EOF",""};
	int err;

	_MacStart(GM_ERRNAME);

	if (!dst)  {
		_MacErr(GM_NULLSTRING);
		_MacRet(NULL);
	}

	if (num	== GM_SUCCESS)	{
		strcpy(dst, "GM_SUCCESS");
		_MacRet(dst);
	}

	err = GM_BASE -	num;
	if (err<0 || err>16)  {
		_MacErr(GM_ARGVAL);
		_MacRet(NULL);
	}

	strcpy(dst, codes[err]);
	_MacRet(dst);
}