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#include "lizfcm.test.h"
#include <math.h>
Matrix_double *generate_ddm(size_t n) {
Matrix_double *m = InitMatrixWithSize(double, n, n, rand_from(0.0, 1.0));
for (size_t y = 0; y < m->rows; y++) {
m->data[y]->data[y] += sum_v(m->data[y]);
}
return m;
}
UTEST(jacobi, jacobi_solve) {
Matrix_double *m = generate_ddm(2);
Array_double *b_1 = InitArrayWithSize(double, m->rows, 1.0);
Array_double *b = m_dot_v(m, b_1);
double tolerance = 0.001;
size_t max_iter = 400;
Array_double *solution = jacobi_solve(m, b, tolerance, max_iter);
for (size_t y = 0; y < m->rows; y++) {
double dot = v_dot_v(m->data[y], solution);
EXPECT_NEAR(b->data[y], dot, 0.1);
}
free_matrix(m);
free_vector(b_1);
free_vector(b);
free_vector(solution);
}
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