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44 lines
1.3 KiB
44 lines
1.3 KiB
/*
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* Copyright 1987 by MIT Student Information Processing Board
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose is hereby granted, provided that
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* the names of M.I.T. and the M.I.T. S.I.P.B. not be used in
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* advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. M.I.T. and the
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* M.I.T. S.I.P.B. make no representations about the suitability of
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* this software for any purpose. It is provided "as is" without
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* express or implied warranty.
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*/
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#include "config.h"
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#include "com_err.h"
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#include "error_table.h"
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#include "internal.h"
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static const char char_set[] =
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
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static char buf[6];
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const char * error_table_name(errcode_t num)
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{
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int ch;
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int i;
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char *p;
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/* num = aa aaa abb bbb bcc ccc cdd ddd d?? ??? ??? */
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p = buf;
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num >>= ERRCODE_RANGE;
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/* num = ?? ??? ??? aaa aaa bbb bbb ccc ccc ddd ddd */
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num &= 077777777L;
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/* num = 00 000 000 aaa aaa bbb bbb ccc ccc ddd ddd */
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for (i = 4; i >= 0; i--) {
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ch = (int)((num >> BITS_PER_CHAR * i) & ((1 << BITS_PER_CHAR) - 1));
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if (ch != 0)
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*p++ = char_set[ch-1];
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}
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*p = '\0';
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return(buf);
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}
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