modules/up/src/gnug++/SymbolConjunctPtr.defs.h
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FUNCTIONS
This source file includes following functions.
- SymbolConjunctPtrEQ
- SymbolConjunctPtrLE
- SymbolConjunctPtrCMP
- SymbolConjunctPtrHASH
- HASHTABLE_TOO_CROWDED
1 // This may look like C code, but it is really -*- C++ -*-
2 /*
3 Copyright (C) 1988 Free Software Foundation
4 written by Doug Lea (dl@rocky.oswego.edu)
5
6 This file is part of the GNU C++ Library. This library is free
7 software; you can redistribute it and/or modify it under the terms of
8 the GNU Library General Public License as published by the Free
9 Software Foundation; either version 2 of the License, or (at your
10 option) any later version. This library is distributed in the hope
11 that it will be useful, but WITHOUT ANY WARRANTY; without even the
12 implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
13 PURPOSE. See the GNU Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with this library; if not, write to the Free Software
16 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
17 */
18
19
20 #ifndef _SymbolConjunctPtrdefs_h
21 #define _SymbolConjunctPtrdefs_h 1
22
23 #include "config.h"
24 #include "normalform/SymbolConjunct.hh"
25
26 // equality operator
27 #ifndef SymbolConjunctPtrEQ
28 #define SymbolConjunctPtrEQ(a, b) ((*a) == (*b))
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29 #endif
30
31 // less-than-or-equal
32 #ifndef SymbolConjunctPtrLE
33 #define SymbolConjunctPtrLE(a, b) ((*a) <= (*b))
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34 #endif
35
36 // comparison : less-than -> < 0; equal -> 0; greater-than -> > 0
37 #ifndef SymbolConjunctPtrCMP
38 #define SymbolConjunctPtrCMP(a, b) ( ((*a) <= (*b))? (((*a) == (*b))? 0 : -1) : 1 )
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39 #endif
40
41 // hash function
42 #ifndef SymbolConjunctPtrHASH
43 extern unsigned int hash(SymbolConjunctPtr );
44 #define SymbolConjunctPtrHASH(x) hash(x)
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45 #endif
46
47 // initial capacity for structures requiring one
48
49 #ifndef DEFAULT_INITIAL_CAPACITY
50 #define DEFAULT_INITIAL_CAPACITY 100
51 #endif
52
53 // HASHTABLE_TOO_CROWDED(COUNT, SIZE) is true iff a hash table with COUNT
54 // elements and SIZE slots is too full, and should be resized.
55 // This is so if available space is less than 1/8.
56
57 #define HASHTABLE_TOO_CROWDED(COUNT, SIZE) ((SIZE) - ((SIZE) >> 3) <= (COUNT))
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58
59 #endif