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e5ed6001f8
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| b66a923d26 |
1
.gitignore
vendored
1
.gitignore
vendored
@@ -636,3 +636,4 @@ FodyWeavers.xsd
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*.msix
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*.msm
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*.msp
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*.txt
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@@ -2,9 +2,8 @@
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#include "Solver.h"
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int main() {
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std::ifstream file("matrix.txt");
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Solver slv(1., 0., 1., 3, 0, 1);
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slv.Execute();
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Solver slv(1., 0., 1., 20, 0, 1);
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slv.Execute_Linear();
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return 0;
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}
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22
Solver.cpp
22
Solver.cpp
@@ -9,7 +9,7 @@ Solver::Solver(double _A, double _B, double _C, int _N, int _l, int _u) {
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dx = L / N;
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}
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void Solver::Execute() {
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void Solver::Execute_Linear() {
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MatrixXd local = MatrixXd::Zero(2, 2);
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local(0, 0) = A / dx - B / 2;
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local(0, 1) = -A / dx + B / 2;
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@@ -76,4 +76,24 @@ void Solver::Execute() {
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VectorXd solution = ansamb.fullPivLu().solve(global_load);
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std::cout << "\nSolution:" << std::endl;
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std::cout << solution << std::endl;
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std::ofstream file("matrix_2.txt");
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for (int i = 0; i < N + 1; i++) {
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file << solution(i) << ' ';
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}
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file << std::endl;
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}
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void Solver::Execute_Cubic() {
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MatrixXd local = MatrixXd::Zero(2, 2);
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local(0, 0) = A * 37/(10 * dx) + B / 2;
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local(0, 1) = -A / dx + B / 2;
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local(0, 1) = A;
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local(1, 0) = -A / dx - B / 2;
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local(1, 1) = A / dx + B / 2;
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std::cout << "Local matrix:\n" << local << std::endl;
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VectorXd local_load(2);
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local_load(0) = C * dx / 2;
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local_load(1) = C * dx / 2;
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}
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3
Solver.h
3
Solver.h
@@ -5,5 +5,6 @@ private:
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int N, upper, lower;
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public:
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Solver(double _A, double _B, double _C, int _N, int _l, int _u);
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void Execute();
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void Execute_Linear();
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void Execute_Cubic();
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};
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@@ -1,3 +0,0 @@
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1 2 4
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4 5 6
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7 8 9
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