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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"
-
- static char copyright[] = "Copyright 1987 by MIT Student Information Processing Board";
-
- char *malloc();
-
- char *
- error_table_name(num)
- int num;
- {
- register int ch;
- register int i;
- register char *buf, *p;
-
- /* num = aa aaa abb bbb bcc ccc cdd ddd d?? ??? ??? */
- buf = malloc(5);
- 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 = 0; i < 5; i++) {
- ch = (num >> 24-6*i) & 077;
- if (ch == 0)
- continue;
- else if (ch < 27)
- *p++ = ch - 1 + 'A';
- else if (ch < 53)
- *p++ = ch - 27 + 'a';
- else if (ch < 63)
- *p++ = ch - 53 + '0';
- else /* ch == 63 */
- *p++ = '_';
- }
- return(buf);
- }
-
-