home *** CD-ROM | disk | FTP | other *** search
- // This may look like C code, but it is really -*- C++ -*-
- /*
- Copyright (C) 1988 Free Software Foundation
- written by Doug Lea (dl@rocky.oswego.edu)
-
- This file is part of the GNU C++ Library. This library is free
- software; you can redistribute it and/or modify it under the terms of
- the GNU Library General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your
- option) any later version. This library is distributed in the hope
- that it will be useful, but WITHOUT ANY WARRANTY; without even the
- implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- PURPOSE. See the GNU Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-
- #ifndef _<T>defs_h
- #define _<T>defs_h 1
-
-
- // equality operator
- #ifndef <T>EQ
- #define <T>EQ(a, b) ((a) == (b))
- #endif
-
- // less-than-or-equal
- #ifndef <T>LE
- #define <T>LE(a, b) ((a) <= (b))
- #endif
-
- // comparison : less-than -> < 0; equal -> 0; greater-than -> > 0
- #ifndef <T>CMP
- #define <T>CMP(a, b) ( ((a) <= (b))? (((a) == (b))? 0 : -1) : 1 )
- #endif
-
- // hash function
- #ifndef <T>HASH
- extern unsigned int hash(<T&>);
- #define <T>HASH(x) hash(x)
- #endif
-
- // initial capacity for structures requiring one
-
- #ifndef DEFAULT_INITIAL_CAPACITY
- #define DEFAULT_INITIAL_CAPACITY 100
- #endif
-
- // HASHTABLE_TOO_CROWDED(COUNT, SIZE) is true iff a hash table with COUNT
- // elements and SIZE slots is too full, and should be resized.
- // This is so if available space is less than 1/8.
-
- #define HASHTABLE_TOO_CROWDED(COUNT, SIZE) ((SIZE) - ((SIZE) >> 3) <= (COUNT))
-
- #endif
-