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Extensive gamma test program
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/*************************************************************************************
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/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./tests/Test_gamma.cc
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Source file: ./tests/Test_gamma.cc
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Copyright (C) 2015
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Copyright (C) 2015-2017
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Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
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Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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Author: Antonin Portelli <antonin.portelli@ed.ac.uk>
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution directory
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See the full license in the file "LICENSE" in the top level distribution directory
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*************************************************************************************/
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*************************************************************************************/
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/* END LEGAL */
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/* END LEGAL */
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#include <Grid/Grid.h>
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#include <Grid/Grid.h>
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using namespace std;
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using namespace std;
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using namespace Grid;
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using namespace Grid;
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using namespace Grid::QCD;
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using namespace QCD;
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//template<class vobj> class is_pod< iScalar<vobj> >
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static constexpr double tolerance = 1.0e-6;
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//{
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static std::array<SpinMatrix, Gamma::nGamma> testAlgebra;
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//
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//};
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int main (int argc, char ** argv)
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void print(const SpinMatrix &g)
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{
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for(int i = 0; i < Ns; i++)
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{
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std::cout << GridLogMessage << "(";
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for(int j=0;j<Ns;j++){
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if ( abs(g()(i,j)()) == 0 ) {
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std::cout<< " 0";
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} else if ( abs(g()(i,j)() - Complex(0,1)) == 0){
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std::cout<< " i";
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} else if ( abs(g()(i,j)() + Complex(0,1)) == 0){
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std::cout<< "-i";
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} else if ( abs(g()(i,j)() - Complex(1,0)) == 0){
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std::cout<< " 1";
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} else if ( abs(g()(i,j)() + Complex(1,0)) == 0){
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std::cout<< "-1";
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}
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std::cout<<((j == Ns-1) ? ")" : "," );
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}
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std::cout << std::endl;
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}
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std::cout << GridLogMessage << std::endl;
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}
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void createTestAlgebra(void)
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{
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std::array<SpinMatrix, 4> testg;
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SpinMatrix testg5;
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const Complex I(0., 1.), mI(0., -1.);
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testg[0] = zero;
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testg[0]()(0, 3) = I;
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testg[0]()(1, 2) = I;
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testg[0]()(2, 1) = mI;
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testg[0]()(3, 0) = mI;
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std::cout << GridLogMessage << "test GammaX= " << std::endl;
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print(testg[0]);
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testg[1] = zero;
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testg[1]()(0, 3) = -1.;
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testg[1]()(1, 2) = 1.;
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testg[1]()(2, 1) = 1.;
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testg[1]()(3, 0) = -1.;
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std::cout << GridLogMessage << "test GammaY= " << std::endl;
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print(testg[1]);
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testg[2] = zero;
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testg[2]()(0, 2) = I;
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testg[2]()(1, 3) = mI;
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testg[2]()(2, 0) = mI;
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testg[2]()(3, 1) = I;
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std::cout << GridLogMessage << "test GammaZ= " << std::endl;
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print(testg[2]);
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testg[3] = zero;
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testg[3]()(0, 2) = 1.;
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testg[3]()(1, 3) = 1.;
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testg[3]()(2, 0) = 1.;
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testg[3]()(3, 1) = 1.;
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std::cout << GridLogMessage << "test GammaT= " << std::endl;
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print(testg[3]);
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testg5 = testg[0]*testg[1]*testg[2]*testg[3];
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#define DEFINE_TEST_G(g, exp)\
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testAlgebra[Gamma::Algebra::g] = exp;\
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testAlgebra[Gamma::Algebra::Minus##g] = -exp;\
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DEFINE_TEST_G(Identity , 1.);
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DEFINE_TEST_G(Gamma5 , testg5);
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DEFINE_TEST_G(GammaX , testg[0]);
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DEFINE_TEST_G(GammaY , testg[1]);
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DEFINE_TEST_G(GammaZ , testg[2]);
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DEFINE_TEST_G(GammaT , testg[3]);
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DEFINE_TEST_G(GammaXGamma5, testg[0]*testg5);
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DEFINE_TEST_G(GammaYGamma5, testg[1]*testg5);
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DEFINE_TEST_G(GammaZGamma5, testg[2]*testg5);
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DEFINE_TEST_G(GammaTGamma5, testg[3]*testg5);
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DEFINE_TEST_G(SigmaXY , .5*(testg[0]*testg[1] - testg[1]*testg[0]));
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DEFINE_TEST_G(SigmaXZ , .5*(testg[0]*testg[2] - testg[2]*testg[0]));
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DEFINE_TEST_G(SigmaXT , .5*(testg[0]*testg[3] - testg[3]*testg[0]));
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DEFINE_TEST_G(SigmaYZ , .5*(testg[1]*testg[2] - testg[2]*testg[1]));
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DEFINE_TEST_G(SigmaYT , .5*(testg[1]*testg[3] - testg[3]*testg[1]));
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DEFINE_TEST_G(SigmaZT , .5*(testg[2]*testg[3] - testg[3]*testg[2]));
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#undef DEFINE_TEST_G
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}
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template <typename Expr>
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void test(const Expr &a, const Expr &b)
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{
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if (norm2(a - b) < tolerance)
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{
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std::cout << "[OK] ";
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}
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else
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{
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std::cout << "[fail]" << std::endl;
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std::cout << GridLogError << "a= " << a << std::endl;
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std::cout << GridLogError << "is different (tolerance= " << tolerance << ") from " << std::endl;
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std::cout << GridLogError << "b= " << b << std::endl;
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exit(EXIT_FAILURE);
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}
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}
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void checkMat(const Gamma::Algebra a, GridSerialRNG &rng)
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{
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SpinVector v;
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SpinMatrix m, &testg = testAlgebra[a];
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Gamma g(a);
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bool pass = true;
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random(rng, v);
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random(rng, m);
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std::cout << GridLogMessage << "Checking " << Gamma::name[a] << ": ";
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std::cout << "vecmul ";
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test(g*v, testg*v);
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std::cout << "matlmul ";
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test(g*m, testg*m);
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std::cout << "matrmul ";
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test(m*g, m*testg);
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std::cout << std::endl;
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}
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void checkProd(const Gamma::Algebra a, const Gamma::Algebra b)
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{
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SpinMatrix gm, testg = testAlgebra[a]*testAlgebra[b];
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Gamma ga(a), gb(b), g = ga*gb;
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bool pass = true;
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std::cout << GridLogMessage << "Checking " << Gamma::name[a] << " * "
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<< Gamma::name[b] << ": ";
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gm = 1.0;
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gm = g*gm;
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test(gm, testg);
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std::cout << "(= " << Gamma::name[g.g] << ")" << std::endl;
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}
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void checkProject(GridSerialRNG &rng)
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{
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SpinVector rv, recon, full;
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HalfSpinVector hsp, hsm;
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random(rng, rv);
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#define CHECK_PROJ(dir, gamma)\
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std::cout << GridLogMessage << "Checking " << #dir << " projector: ";\
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spProj##dir(hsm,rv);\
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spRecon##dir(recon,hsm);\
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test(recon, rv + Gamma(Gamma::Algebra::gamma)*rv);\
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std::cout << std::endl;
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CHECK_PROJ(Xp, GammaX);
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CHECK_PROJ(Yp, GammaY);
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CHECK_PROJ(Zp, GammaZ);
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CHECK_PROJ(Tp, GammaT);
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CHECK_PROJ(5p, Gamma5);
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CHECK_PROJ(Xm, MinusGammaX);
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CHECK_PROJ(Ym, MinusGammaY);
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CHECK_PROJ(Zm, MinusGammaZ);
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CHECK_PROJ(Tm, MinusGammaT);
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CHECK_PROJ(5m, MinusGamma5);
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#undef CHECK_PROJ
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}
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int main(int argc, char *argv[])
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{
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{
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Grid_init(&argc,&argv);
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Grid_init(&argc,&argv);
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std::vector<int> latt_size = GridDefaultLatt();
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std::vector<int> latt_size = GridDefaultLatt();
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std::vector<int> simd_layout = GridDefaultSimd(4,vComplex::Nsimd());
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std::vector<int> simd_layout = GridDefaultSimd(4,vComplex::Nsimd());
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std::vector<int> mpi_layout = GridDefaultMpi();
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std::vector<int> mpi_layout = GridDefaultMpi();
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GridCartesian Grid(latt_size,simd_layout,mpi_layout);
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GridCartesian Grid(latt_size,simd_layout,mpi_layout);
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GridSerialRNG sRNG;
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GridParallelRNG pRNG(&Grid);
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pRNG.SeedRandomDevice();
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GridSerialRNG sRNG;
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sRNG.SeedRandomDevice();
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sRNG.SeedRandomDevice();
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SpinMatrix ident; ident=zero;
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std::cout << GridLogMessage << "======== Test algebra" << std::endl;
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SpinMatrix rnd ; random(sRNG,rnd);
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createTestAlgebra();
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std::cout << GridLogMessage << "======== Multiplication operators check" << std::endl;
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SpinMatrix ll; ll=zero;
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for (int i = 0; i < Gamma::nGamma; ++i)
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SpinMatrix rr; rr=zero;
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{
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SpinMatrix result;
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checkMat(i, sRNG);
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SpinVector lv; random(sRNG,lv);
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SpinVector rv; random(sRNG,rv);
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// std::cout<<GridLogMessage << " Is pod " << std::is_pod<SpinVector>::value << std::endl;
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// std::cout<<GridLogMessage << " Is pod double " << std::is_pod<double>::value << std::endl;
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// std::cout<<GridLogMessage << " Is pod ComplexF " << std::is_pod<ComplexF>::value << std::endl;
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// std::cout<<GridLogMessage << " Is triv double " << std::has_trivial_default_constructor<double>::value << std::endl;
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// std::cout<<GridLogMessage << " Is triv ComplexF " << std::has_trivial_default_constructor<ComplexF>::value << std::endl;
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// std::cout<<GridLogMessage << " Is pod Scalar<double> " << std::is_pod<iScalar<double> >::value << std::endl;
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// std::cout<<GridLogMessage << " Is pod Scalar<ComplexF> " << std::is_pod<iScalar<ComplexF> >::value << std::endl;
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// std::cout<<GridLogMessage << " Is pod Scalar<vComplexF> " << std::is_pod<iScalar<vComplexF> >::value << std::endl;
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// std::cout<<GridLogMessage << " Is pod Scalar<vComplexD> " << std::is_pod<iScalar<vComplexD> >::value << std::endl;
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// std::cout<<GridLogMessage << " Is pod Scalar<vRealF> " << std::is_pod<iScalar<vRealF> >::value << std::endl;
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// std::cout<<GridLogMessage << " Is pod Scalar<vRealD> " << std::is_pod<iScalar<vRealD> >::value << std::endl;
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// std::cout<<GridLogMessage << " Is triv Scalar<double> " <<std::has_trivial_default_constructor<iScalar<double> >::value << std::endl;
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// std::cout<<GridLogMessage << " Is triv Scalar<vComplexD> "<<std::has_trivial_default_constructor<iScalar<vComplexD> >::value << std::endl;
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for(int a=0;a<Ns;a++){
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ident()(a,a) = ComplexF(1.0);
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}
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}
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std::cout << GridLogMessage << std::endl;
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const Gamma::Algebra *g = Gamma::GammaMatrices;
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std::cout << GridLogMessage << "======== Algebra multiplication table check" << std::endl;
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const char **list = Gamma::GammaMatrixNames;
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for (int i = 0; i < Gamma::nGamma; ++i)
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for (int j = 0; j < Gamma::nGamma; ++j)
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result =ll*Gamma(g[0])*rr;
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{
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result =ll*Gamma(g[0]);
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checkProd(i, j);
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rv = Gamma(g[0])*lv;
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for(int mu=0;mu<12;mu++){
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result = Gamma(g[mu])* ident;
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for(int i=0;i<Ns;i++){
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if(i==0) std::cout<<GridLogMessage << list[mu];
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else std::cout<<GridLogMessage << list[12];
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std::cout<<"(";
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for(int j=0;j<Ns;j++){
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if ( abs(result()(i,j)())==0 ) {
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std::cout<< " 0";
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} else if ( abs(result()(i,j)() - Complex(0,1))==0){
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std::cout<< " i";
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} else if ( abs(result()(i,j)() + Complex(0,1))==0){
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std::cout<< "-i";
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} else if ( abs(result()(i,j)() - Complex(1,0))==0){
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std::cout<< " 1";
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} else if ( abs(result()(i,j)() + Complex(1,0))==0){
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std::cout<< "-1";
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}
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std::cout<<((j==Ns-1) ? ")" : "," );
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}
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std::cout << std::endl;
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}
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std::cout << std::endl;
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}
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}
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std::cout << GridLogMessage << std::endl;
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std::cout << "Testing Gamma^2 - 1 = 0"<<std::endl;
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std::cout << GridLogMessage << "======== Spin projectors check" << std::endl;
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for(int mu=0;mu<6;mu++){
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checkProject(sRNG);
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result = Gamma(g[mu])* ident * Gamma(g[mu]);
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result = result - ident;
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RealD mag = norm2(result);
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std::cout << list[mu]<<" " << mag<<std::endl;
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}
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std::cout << "Testing (MinusGamma + G )M = 0"<<std::endl;
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for(int mu=0;mu<6;mu++){
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result = rnd * Gamma(g[mu]);
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result = result + rnd * Gamma(g[mu+6]);
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RealD mag = norm2(result);
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std::cout << list[mu]<<" " << mag<<std::endl;
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}
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std::cout << "Testing M(MinusGamma + G ) = 0"<<std::endl;
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for(int mu=0;mu<6;mu++){
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result = Gamma(g[mu]) *rnd;
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result = result + Gamma(g[mu+6])*rnd;
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RealD mag = norm2(result);
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std::cout << list[mu]<<" " << mag<<std::endl;
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}
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// Testing spins and reconstructs
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SpinVector recon; random(sRNG,rv);
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SpinVector full;
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HalfSpinVector hsp,hsm;
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// Xp
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double mag;
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|
||||||
spProjXp(hsm,rv);
|
|
||||||
spReconXp(recon,hsm);
|
|
||||||
full = rv + Gamma(Gamma::Algebra::GammaX) *rv;
|
|
||||||
mag = TensorRemove(norm2(full-recon));
|
|
||||||
std::cout << "Xp "<< mag<<std::endl;
|
|
||||||
|
|
||||||
// Xm
|
|
||||||
spProjXm(hsm,rv);
|
|
||||||
spReconXm(recon,hsm);
|
|
||||||
full = rv - Gamma(Gamma::Algebra::GammaX) *rv;
|
|
||||||
mag = TensorRemove(norm2(full-recon));
|
|
||||||
std::cout << "Xm "<< mag<<std::endl;
|
|
||||||
|
|
||||||
// Yp
|
|
||||||
spProjYp(hsm,rv);
|
|
||||||
spReconYp(recon,hsm);
|
|
||||||
full = rv + Gamma(Gamma::Algebra::GammaY) *rv;
|
|
||||||
mag = TensorRemove(norm2(full-recon));
|
|
||||||
std::cout << "Yp "<< mag<<std::endl;
|
|
||||||
|
|
||||||
// Ym
|
|
||||||
spProjYm(hsm,rv);
|
|
||||||
spReconYm(recon,hsm);
|
|
||||||
full = rv - Gamma(Gamma::Algebra::GammaY) *rv;
|
|
||||||
mag = TensorRemove(norm2(full-recon));
|
|
||||||
std::cout << "Ym "<< mag<<std::endl;
|
|
||||||
|
|
||||||
// Zp
|
|
||||||
spProjZp(hsm,rv);
|
|
||||||
spReconZp(recon,hsm);
|
|
||||||
full = rv + Gamma(Gamma::Algebra::GammaZ) *rv;
|
|
||||||
mag = TensorRemove(norm2(full-recon));
|
|
||||||
std::cout << "Zp "<< mag<<std::endl;
|
|
||||||
|
|
||||||
// Zm
|
|
||||||
spProjZm(hsm,rv);
|
|
||||||
spReconZm(recon,hsm);
|
|
||||||
full = rv - Gamma(Gamma::Algebra::GammaZ) *rv;
|
|
||||||
mag = TensorRemove(norm2(full-recon));
|
|
||||||
std::cout << "Zm "<< mag<<std::endl;
|
|
||||||
|
|
||||||
// Tp
|
|
||||||
spProjTp(hsm,rv);
|
|
||||||
spReconTp(recon,hsm);
|
|
||||||
full = rv + Gamma(Gamma::Algebra::GammaT) *rv;
|
|
||||||
mag = TensorRemove(norm2(full-recon));
|
|
||||||
std::cout << "Tp "<< mag<<std::endl;
|
|
||||||
|
|
||||||
// Tm
|
|
||||||
spProjTm(hsm,rv);
|
|
||||||
spReconTm(recon,hsm);
|
|
||||||
full = rv - Gamma(Gamma::Algebra::GammaT) *rv;
|
|
||||||
mag = TensorRemove(norm2(full-recon));
|
|
||||||
std::cout << "Tm "<< mag<<std::endl;
|
|
||||||
|
|
||||||
// 5p
|
|
||||||
spProj5p(hsm,rv);
|
|
||||||
spRecon5p(recon,hsm);
|
|
||||||
full = rv + Gamma(Gamma::Algebra::Gamma5) *rv;
|
|
||||||
mag = TensorRemove(norm2(full-recon));
|
|
||||||
std::cout << "5p "<< mag<<std::endl;
|
|
||||||
|
|
||||||
// 5m
|
|
||||||
spProj5m(hsm,rv);
|
|
||||||
spRecon5m(recon,hsm);
|
|
||||||
full = rv - Gamma(Gamma::Algebra::Gamma5) *rv;
|
|
||||||
mag = TensorRemove(norm2(full-recon));
|
|
||||||
std::cout << "5m "<< mag<<std::endl;
|
|
||||||
|
|
||||||
Grid_finalize();
|
Grid_finalize();
|
||||||
|
|
||||||
|
return EXIT_SUCCESS;
|
||||||
}
|
}
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user