82 lines
2.4 KiB
C++
82 lines
2.4 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 | www.openfoam.com
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Copyright (C) 2018-2021 OpenCFD Ltd.
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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
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the Free Software Foundation, either version 3 of the License, or
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(at your 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, see <http://www.gnu.org/licenses/>.
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Description
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Test the sizeof for basic types.
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Can be compiled and run without any OpenFOAM libraries.
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g++ -std=c++11 -oTest-machine-sizes Test-machine-sizes.cpp
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\*---------------------------------------------------------------------------*/
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#include <climits>
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#include <cstdint>
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#include <cstdlib>
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#include <iostream>
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#include <limits>
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#include <typeinfo>
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template<class T>
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void print(const char* name, bool showLimits = true)
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{
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std::cout
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<< "name=\"" << name << "\" sizeof=" << sizeof(T);
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if (showLimits)
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{
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std::cout
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<< " \"max\"=" << std::numeric_limits<T>::max();
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}
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std::cout<< '\n';
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Main program:
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int main(int argc, char *argv[])
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{
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std::cout<<"machine sizes\n---\n\n";
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print<short>("short");
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print<int>("int");
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print<long>("long");
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print<unsigned long>("unsigned long");
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print<std::size_t>("std::size_t");
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print<long long>("long long");
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print<float>("float");
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print<double>("double");
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print<long double>("long double");
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std::cout << "\n---\nEnd\n\n";
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return 0;
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}
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// ************************************************************************* //
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