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58 lines
2.4 KiB
58 lines
2.4 KiB
#include "gtest/gtest.h"
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#include "storm-config.h"
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#include "src/solver/EliminationLinearEquationSolver.h"
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#include "src/settings/SettingsManager.h"
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#include "src/settings/modules/GmmxxEquationSolverSettings.h"
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TEST(EliminationLinearEquationSolver, Solve) {
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ASSERT_NO_THROW(storm::storage::SparseMatrixBuilder<double> builder);
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storm::storage::SparseMatrixBuilder<double> builder;
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ASSERT_NO_THROW(builder.addNextValue(0, 0, 2));
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ASSERT_NO_THROW(builder.addNextValue(0, 1, 4));
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ASSERT_NO_THROW(builder.addNextValue(0, 2, -2));
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ASSERT_NO_THROW(builder.addNextValue(1, 0, 4));
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ASSERT_NO_THROW(builder.addNextValue(1, 1, -1));
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ASSERT_NO_THROW(builder.addNextValue(1, 2, 5));
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ASSERT_NO_THROW(builder.addNextValue(2, 0, -1));
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ASSERT_NO_THROW(builder.addNextValue(2, 1, -1));
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ASSERT_NO_THROW(builder.addNextValue(2, 2, 3));
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storm::storage::SparseMatrix<double> A;
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ASSERT_NO_THROW(A = builder.build());
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std::vector<double> x(3);
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std::vector<double> b = {16, -4, -7};
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ASSERT_NO_THROW(storm::solver::EliminationLinearEquationSolver<double> solver(A));
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storm::solver::EliminationLinearEquationSolver<double> solver(A);
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ASSERT_NO_THROW(solver.solveEquations(x, b));
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ASSERT_LT(std::abs(x[0] - 1), 1e-15);
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ASSERT_LT(std::abs(x[1] - 3), 1e-15);
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ASSERT_LT(std::abs(x[2] - (-1)), 1e-15);
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}
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TEST(EliminationLinearEquationSolver, MatrixVectorMultiplication) {
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ASSERT_NO_THROW(storm::storage::SparseMatrixBuilder<double> builder);
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storm::storage::SparseMatrixBuilder<double> builder;
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ASSERT_NO_THROW(builder.addNextValue(0, 1, 0.5));
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ASSERT_NO_THROW(builder.addNextValue(0, 4, 0.5));
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ASSERT_NO_THROW(builder.addNextValue(1, 2, 0.5));
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ASSERT_NO_THROW(builder.addNextValue(1, 4, 0.5));
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ASSERT_NO_THROW(builder.addNextValue(2, 3, 0.5));
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ASSERT_NO_THROW(builder.addNextValue(2, 4, 0.5));
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ASSERT_NO_THROW(builder.addNextValue(3, 4, 1));
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ASSERT_NO_THROW(builder.addNextValue(4, 4, 1));
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storm::storage::SparseMatrix<double> A;
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ASSERT_NO_THROW(A = builder.build());
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std::vector<double> x(5);
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x[4] = 1;
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storm::solver::EliminationLinearEquationSolver<double> solver(A);
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ASSERT_NO_THROW(solver.repeatedMultiply(x, nullptr, 4));
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ASSERT_LT(std::abs(x[0] - 1), storm::settings::getModule<storm::settings::modules::GmmxxEquationSolverSettings>().getPrecision());
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}
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