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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Application
Description
\*---------------------------------------------------------------------------*/
#include "argList.H"
#include "uLabel.H"
#include "IOobject.H"
#include "IOstreams.H"
#include "IFstream.H"
#include "PackedBoolList.H"
#include <climits>
using namespace Foam;
template<unsigned nBits>
inline void reportInfo()
{
unsigned offset = PackedList<nBits>::packing();
unsigned useSHL = ((1u << (nBits * offset)) - 1);
unsigned useSHR = (~0u >> (sizeof(unsigned)*CHAR_BIT - nBits * offset));
Info<< nl
<< "PackedList<" << nBits << ">" << nl
<< " max_value: " << PackedList<nBits>::max_value() << nl
<< " packing: " << PackedList<nBits>::packing() << nl
<< " utilization: " << (nBits * offset) << nl;
Info<< " Masking:" << nl
<< " shift << "
<< unsigned(nBits * offset) << nl
<< " shift >> "
<< unsigned((sizeof(unsigned)*CHAR_BIT) - nBits * offset)
<< nl;
hex(Info);
Info<< " maskLower: "
<< PackedList<nBits>::maskLower(PackedList<nBits>::packing())
<< nl
<< " useSHL: " << useSHL << nl
<< " useSHR: " << useSHR << nl;
if (useSHL != useSHR)
{
Info<< "WARNING: different results for SHL and SHR" << nl;
}
Info<< nl;
dec(Info);
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Main program:
int main(int argc, char *argv[])
{
argList::noParallel();
argList::validArgs.insert("file .. fileN");
argList::addBoolOption("mask", "report information about the bit masks");
argList::addBoolOption("count", "test the count() method");
argList::addBoolOption
(
"info",
"print an ascii representation of the storage"
);
argList args(argc, argv, false, true);
if (args.optionFound("mask"))
{
Info<< "bit width: " << unsigned(sizeof(unsigned)*CHAR_BIT) << endl;
reportInfo<1>();
reportInfo<2>();
reportInfo<3>();
reportInfo<4>();
reportInfo<5>();
reportInfo<6>();
reportInfo<7>();
reportInfo<8>();
reportInfo<9>();
reportInfo<10>();
reportInfo<11>();
reportInfo<12>();
reportInfo<13>();
reportInfo<14>();
reportInfo<15>();
reportInfo<16>();
return 0;
}
else if (args.size() <= 1)
{
args.printUsage();
}
for (label argI=1; argI < args.size(); ++argI)
{
const string& srcFile = args[argI];
Info<< nl << "reading " << srcFile << nl;
IFstream ifs(srcFile);
List<label> rawLst(ifs);
PackedBoolList packLst(rawLst);
Info<< "size: " << packLst.size() << nl;
if (args.optionFound("count"))
{
unsigned int rawCount = 0;
forAll(rawLst, elemI)
{
if (rawLst[elemI])
{
rawCount++;
}
}
Info<< "raw count: " << rawCount << nl
<< "packed count: " << packLst.count() << nl;
}
if (args.optionFound("info"))
{
packLst.printInfo(Info);
}
Info<< nl;
IOobject::writeDivider(Info);
}
return 0;
}
// ************************************************************************* //
|
