modules/up/src/gnug++/SymbolConjunctPtr.defs.h

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FUNCTIONS

This source file includes following functions.
  1. SymbolConjunctPtrEQ
  2. SymbolConjunctPtrLE
  3. SymbolConjunctPtrCMP
  4. SymbolConjunctPtrHASH
  5. 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

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