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assemble.h
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assemble.h
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// assemble matrix and vector
#ifndef ASSEMBLE_H
#define ASSEMBLE_H
#include "utils.h"
using namespace std;
void fd_matrix( double** M,
cuint I, cuint J, cuint K,
const double dx2i,
const double dy2i,
const double dz2i,
cuint n_dof
);
// 2nd order stencil
void fd_matrix_sparse( vector<tuple <uint, uint, double> >& M_sp,
vector<double>& val,
vector<uint>& col_ind,
vector<uint>& row_ptr,
cuint I, cuint J, cuint K,
const double dx2i,
const double dy2i,
const double dz2i,
cuint n_dof
);
void load_vector( double* F,
cuint n_dof,
cuint I,
cuint J,
cuint K
);
int boundary_conditins( cuint n_dof,
cuint I,
cuint J,
cuint K,
double** M,
double* F
);
// add index and value into a sparse matrix
void sparse_add( vector<tuple<uint, uint, double > >& M,
cuint i, cuint j, cdouble v);
// merge two sorted arrays
void merge(vector<tuple <uint, uint, double> >& left,
vector<tuple <uint, uint, double> >& right,
cuint n_left, cuint n_right,
vector<tuple <uint, uint, double> >& result,
vector<tuple <uint, uint, double> >& tmp
);
#endif //ASSEMBLE_H