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/* $OpenBSD: et_name.c,v 1.2 1996/12/14 06:55:57 tholo Exp $ */
/*-
* Copyright 1987, 1988 by the Student Information Processing Board
* of the Massachusetts Institute of Technology
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for any purpose and without fee is
* hereby granted, provided that the above copyright notice
* appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation,
* and that the names of M.I.T. and the M.I.T. S.I.P.B. not be
* used in advertising or publicity pertaining to distribution
* of the software without specific, written prior permission.
* M.I.T. and the M.I.T. S.I.P.B. make no representations about
* the suitability of this software for any purpose. It is
* provided "as is" without express or implied warranty.
*/
#include "error_table.h"
#ifndef lint
static const char copyright[] =
"Copyright 1987,1988 by Student Information Processing Board, Massachusetts Institute of Technology";
static const char rcsid_et_name_c[] =
"$Id: et_name.c,v 1.2 1996/12/14 06:55:57 tholo Exp $";
#endif
static const char char_set[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
static char buf[6];
const char *
error_table_name(n)
int n;
{
unsigned num = n;
int ch;
int i;
char *p;
/* num = aa aaa abb bbb bcc ccc cdd ddd d?? ??? ??? */
p = buf;
num >>= ERRCODE_RANGE;
/* num = ?? ??? ??? aaa aaa bbb bbb ccc ccc ddd ddd */
num &= 077777777;
/* num = 00 000 000 aaa aaa bbb bbb ccc ccc ddd ddd */
for (i = 4; i >= 0; i--) {
ch = (num >> BITS_PER_CHAR * i) & ((1 << BITS_PER_CHAR) - 1);
if (ch != 0)
*p++ = char_set[ch-1];
}
*p = '\0';
return(buf);
}
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