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/*
* Copyright 1987 by MIT Student Information Processing Board
*
* For copyright info, see mit-sipb-copyright.h.
*/
#include "error_table.h"
#include "mit-sipb-copyright.h"
#include "internal.h"
#ifndef lint
static const char copyright[] =
"Copyright 1987,1988 by Student Information Processing Board, Massachusetts Institute of Technology";
#endif
static const char char_set[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
static char buf[6];
const char * error_table_name(num)
int num;
{
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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