tDictionary.cpp

Namespaces:

namespace
Detailed Description

 1
 2//-----------------------------------------------------------------------------
 3// Copyright (c) 2012 GarageGames, LLC
 4//
 5// Permission is hereby granted, free of charge, to any person obtaining a copy
 6// of this software and associated documentation files (the "Software"), to
 7// deal in the Software without restriction, including without limitation the
 8// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 9// sell copies of the Software, and to permit persons to whom the Software is
10// furnished to do so, subject to the following conditions:
11//
12// The above copyright notice and this permission notice shall be included in
13// all copies or substantial portions of the Software.
14//
15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21// IN THE SOFTWARE.
22//-----------------------------------------------------------------------------
23
24#include "core/util/tDictionary.h"
25
26namespace DictHash
27{
28
29static U32 Primes[] = {
30  53ul,         97ul,         193ul,       389ul,       769ul,
31  1543ul,       3079ul,       6151ul,      12289ul,     24593ul,
32  49157ul,      98317ul,      196613ul,    393241ul,    786433ul,
33  1572869ul,    3145739ul,    6291469ul,   12582917ul,  25165843ul,
34  50331653ul,   100663319ul,  201326611ul, 402653189ul, 805306457ul,
35  1610612741ul, 3221225473ul, 4294967291ul
36};
37
38U32 nextPrime(U32 size)
39{
40   U32 len = sizeof(Primes) / sizeof(U32);
41   for(U32 i=0; i<len; i++)
42      if(Primes[i] > size)
43         return Primes[i];
44
45   return Primes[len-1];
46}
47
48};
49