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annotate anagram/agcore/checksum.h @ 0:13d2b8934445

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Import AnaGram (near-)release tree into Mercurial.
author David A. Holland
date Sat, 22 Dec 2007 17:52:45 -0500
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13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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1 /*
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2 * AnaGram, A System for Syntax Directed Programming
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3 * Copyright 1993-1999 Parsifal Software. All Rights Reserved.
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4 * Copyright 2006 David A. Holland. All Rights Reserved.
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5 * See the file COPYING for license and usage terms.
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6 *
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7 * checksum.h - self-checksum module
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8 */
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9
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10 #ifndef CHECKSUM_H
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11 #define CHECKSUM_H
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12
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13 enum summable {
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14 SUM_AG1,
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15 SUM_AG,
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16 SUM_AGCL,
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17 };
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18
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19 struct suminfo {
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20 unsigned long length;
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21 unsigned long sum;
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22 };
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23
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24 struct sumentry {
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25 summable what;
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26 unsigned long offset;
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27 suminfo correct;
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28 suminfo observed;
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29 };
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30
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31 void observeSum(sumentry *s);
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32
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33 void sum_remember_argv0(const char *argv0);
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34
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35 inline int operator != (const suminfo &a, const suminfo &b) {
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36 return a.length != b.length || a.sum != b.sum;
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37 }
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38
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39 // apparently required to have an AgStack<sumentry> (sigh)
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40 inline int operator < (const sumentry &, const sumentry &) {
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41 return 0;
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42 }
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43
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44 #endif /* CHECKSUM_H */