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// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
#include <complex>
#include <iostream>
#include <limits>
#include <dune/common/math.hh>
int main() {
//Initialize some variables
int a = 42;
const int b = 42;
double nan = std::nan("");
double inf = std::numeric_limits<double>::infinity();
std::complex<double> complex_nonan(42., 42.);
std::complex<double> complex_nan1(42.,nan);
std::complex<double> complex_nan2(nan, 42.);
std::complex<double> complex_nan3(nan, nan);
std::complex<double> complex_noinf(42., 42.);
std::complex<double> complex_inf1(42.,inf);
std::complex<double> complex_inf2(inf, 42.);
std::complex<double> complex_inf3(inf, inf);
std::cout << std::boolalpha
//check isNaN()
<< "isNaN(int): " << Dune::isNaN(a) << "\n"
<< "isNaN(const int): " << Dune::isNaN(b) << "\n"
<< "isNaN(42): " << Dune::isNaN(42) << "\n"
<< "isNaN(nan): " << Dune::isNaN(nan) << "\n"
<< "isNaN(inf): " << Dune::isNaN(inf) << "\n"
<< "isNaN(std::complex<double> without NaN): "
<< Dune::isNaN(complex_nonan) << "\n"
<< "isNaN(std::complex<double> with NaN): "
<< Dune::isNaN(complex_nan1) << " "
<< Dune::isNaN(complex_nan2) << " "
<< Dune::isNaN(complex_nan3) << "\n"
//check isInf()
<< "isInf(int): " << Dune::isInf(a) << "\n"
<< "isInf(const int): " << Dune::isInf(b) << "\n"
<< "isInf(42): " << Dune::isInf(42) << "\n"
<< "isInf(inf): " << Dune::isInf(inf) << "\n"
<< "isInf(std::complex<double> without inf): "
<< Dune::isInf(complex_noinf) << "\n"
<< "isInf(std::complex<double> with inf): "
<< Dune::isInf(complex_inf1) << " "
<< Dune::isInf(complex_inf2) << " "
<< Dune::isInf(complex_inf3) << "\n"
//check isFinite()
<< "isFinite(int): " << Dune::isFinite(a) << "\n"
<< "isFinite(const int): " << Dune::isFinite(b) << "\n"
<< "isFinite(42): " << Dune::isFinite(42) << "\n"
<< "isFinite(inf): " << Dune::isFinite(inf) << "\n"
<< "isFinite(std::complex<double> without inf): "
<< Dune::isFinite(complex_noinf) << "\n"
<< "isFinite(std::complex<double> with inf): "
<< Dune::isFinite(complex_inf1) << " "
<< Dune::isFinite(complex_inf2) << " "
<< Dune::isFinite(complex_inf3) << "\n"
<< std::endl;
}
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