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c7c9a6e003
- previous draft version was HashTbl - accidentally still had canonicalSize in templated code
68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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\*---------------------------------------------------------------------------*/
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#include "HashTable.H"
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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defineTypeNameAndDebug(Foam::HashTableCore, 0);
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const Foam::label Foam::HashTableCore::maxTableSize
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(
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Foam::HashTableCore::canonicalSize
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(
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Foam::labelMax/2
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)
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);
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// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
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Foam::label Foam::HashTableCore::canonicalSize(const label size)
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{
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if (size < 1)
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{
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return 0;
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}
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// enforce power of two
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unsigned int goodSize = size;
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if (goodSize & (goodSize - 1))
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{
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// brute-force is fast enough
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goodSize = 1;
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while (goodSize < unsigned(size))
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{
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goodSize <<= 1;
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}
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}
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return goodSize;
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}
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// ************************************************************************* //
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