bool Matrix::isnull() const noexcept { return igraph_matrix_isnull(ptr()); }
int main() {
igraph_matrix_t m, m2;
igraph_vector_t v;
long int i, j, i2, j2;
igraph_real_t r1, r2;
igraph_matrix_init(&m, 4, 3);
byrow(&m);
/* igraph_matrix_e */
printf("igraph_matrix_e\n");
apply(m, printf("%i ", (int)igraph_matrix_e(&m, i, j)), printf("\n"));
/* igraph_matrix_e_ptr */
printf("igraph_matrix_e_ptr\n");
apply(m, printf("%i ", (int)igraph_matrix_e_ptr(&m, i, j)[0]), printf("\n"));
/* igraph_matrix_set */
printf("igraph_matrix_set\n");
apply(m, igraph_matrix_set(&m, i, j, i), (void) 0 );
print_matrix(&m);
apply(m, igraph_matrix_set(&m, i, j, j), (void) 0 );
print_matrix(&m);
/* igraph_matrix_fill */
printf("igraph_matrix_fill\n");
igraph_matrix_fill(&m, 42);
print_matrix(&m);
igraph_matrix_fill(&m, -42.1);
print_matrix(&m);
/* igraph_matrix_update */
printf("igraph_matrix_update\n");
igraph_matrix_init(&m2, 0, 0);
byrow(&m);
igraph_matrix_update(&m2, &m);
print_matrix(&m2);
/* igraph_matrix_rbind */
printf("igraph_matrix_rbind\n");
igraph_matrix_rbind(&m2, &m);
print_matrix(&m2);
printf("\n");
igraph_matrix_resize(&m, 0, igraph_matrix_ncol(&m2));
igraph_matrix_rbind(&m2, &m);
print_matrix(&m2);
printf("\n");
igraph_matrix_rbind(&m, &m2);
print_matrix(&m);
/* igraph_matrix_cbind */
printf("igraph_matrix_cbind\n");
igraph_matrix_resize(&m, 4, 3);
igraph_matrix_resize(&m2, 4, 2);
byrow(&m);
byrow(&m2);
igraph_matrix_cbind(&m, &m2);
print_matrix(&m);
/* igraph_matrix_swap */
printf("igraph_matrix_swap\n");
igraph_matrix_update(&m, &m2);
igraph_matrix_null(&m);
igraph_matrix_swap(&m, &m2);
print_matrix(&m);
print_matrix(&m2);
/* igraph_matrix_get_row */
/* igraph_matrix_set_row */
printf("igraph_matrix_get_row\n");
printf("igraph_matrix_set_row\n");
igraph_vector_init(&v, 0);
for (i=0; i<igraph_matrix_nrow(&m); i++) {
igraph_matrix_get_row(&m, &v, i);
igraph_matrix_set_row(&m2, &v, i);
}
print_matrix(&m2);
/* igraph_matrix_set_col */
printf("igraph_matrix_set_col\n");
igraph_matrix_null(&m2);
for (i=0; i<igraph_matrix_ncol(&m); i++) {
igraph_matrix_get_col(&m, &v, i);
igraph_matrix_set_col(&m2, &v, i);
}
print_matrix(&m2);
/* igraph_matrix_swap_rows */
printf("igraph_matrix_swap_rows\n");
igraph_matrix_swap_rows(&m2, 0, 0);
igraph_matrix_swap_rows(&m2, 0, 2);
print_matrix(&m2);
/* igraph_matrix_swap_cols */
printf("igraph_matrix_swap_cols\n");
igraph_matrix_swap_cols(&m2, 0, 0);
igraph_matrix_swap_cols(&m2, 0, 1);
print_matrix(&m2);
/* igraph_matrix_add_constant */
printf("igraph_matrix_add_constant\n");
igraph_matrix_add_constant(&m2, 0);
print_matrix(&m2);
igraph_matrix_add_constant(&m2, -1);
print_matrix(&m2);
/* igraph_matrix_add */
printf("igraph_matrix_add\n");
byrow(&m2);
byrow(&m);
igraph_matrix_add(&m2, &m);
print_matrix(&m2);
/* igraph_matrix_sub */
printf("igraph_matrix_sub\n");
igraph_matrix_sub(&m2, &m);
print_matrix(&m2);
/* igraph_matrix_mul_elements */
printf("igraph_matrix_mul_elements\n");
igraph_matrix_mul_elements(&m2, &m);
print_matrix(&m2);
/* igraph_matrix_div_elements */
printf("igraph_matrix_div_elements\n");
igraph_matrix_fill(&m, 2);
igraph_matrix_div_elements(&m2, &m);
print_matrix(&m2);
/* igraph_matrix_min */
printf("igraph_matrix_min\n");
if (igraph_matrix_min(&m2) != 0) {
return 1;
}
if (igraph_matrix_min(&m) != 2) {
return 1;
}
/* igraph_matrix_which_min */
printf("igraph_matrix_which_min\n");
igraph_matrix_which_min(&m2, &i, &j);
if (i != 0 || j != 0) { return 2; }
MATRIX(m2,0,1) = -1;
igraph_matrix_which_min(&m2, &i, &j);
if (i != 0 || j != 1) { return 2; }
MATRIX(m2,3,1) = -2;
igraph_matrix_which_min(&m2, &i, &j);
if (i != 3 || j != 1) { return 2; }
/* igraph_matrix_which_max */
printf("igraph_matrix_which_max\n");
MATRIX(m2,3,0) = 100;
igraph_matrix_which_max(&m2, &i, &j);
if (i != 3 || j != 0) { return 3; }
/* igraph_matrix_minmax */
printf("igraph_matrix_minmax\n");
igraph_matrix_minmax(&m2, &r1, &r2);
printf("%g %g\n", r1, r2);
/* igraph_matrix_which_minmax */
printf("igraph_matrix_which_minmax\n");
igraph_matrix_which_minmax(&m2, &i, &j, &i2, &j2);
if (i != 3 || j != 1 || i2 != 3 || j2 != 0) { return 4; }
/* igraph_matrix_isnull */
printf("igraph_matrix_isnull\n");
if (igraph_matrix_isnull(&m2)) { return 5; }
igraph_matrix_null(&m);
if (!igraph_matrix_isnull(&m)) { return 5; }
igraph_matrix_resize(&m2, 5, 0);
if (!igraph_matrix_isnull(&m2)) { return 5; }
/* igraph_matrix_empty */
printf("igraph_matrix_empty\n");
if (!igraph_matrix_empty(&m2)) { return 6; }
igraph_matrix_resize(&m2, 5, 5);
if (igraph_matrix_empty(&m2)) { return 6; }
/* igraph_matrix_is_symmetric */
printf("igraph_matrix_is_symmetric\n");
byrow(&m2);
if (igraph_matrix_is_symmetric(&m2)) { return 7; }
igraph_matrix_update(&m, &m2);
igraph_matrix_transpose(&m);
igraph_matrix_add(&m, &m2);
if (!igraph_matrix_is_symmetric(&m)) { return 7; }
/* igraph_matrix_prod */
printf("igraph_matrix_prod\n");
igraph_matrix_resize(&m, 3,2);
byrow(&m);
igraph_matrix_add_constant(&m, 1);
print_matrix(&m);
printf("product: %g\n", igraph_matrix_prod(&m));
/* igraph_matrix_rowsum */
printf("igraph_matrix_rowsum\n");
igraph_matrix_rowsum(&m, &v);
print_vector(&v);
/* igraph_matrix_colsum */
printf("igraph_matrix_colsum\n");
igraph_matrix_colsum(&m, &v);
print_vector(&v);
/* igraph_matrix_contains */
printf("igraph_matrix_contains\n");
if (igraph_matrix_contains(&m, 0)) { return 8; }
if (igraph_matrix_contains(&m, 6.0001)) { return 8; }
if (igraph_matrix_contains(&m, 7)) { return 8; }
if (!igraph_matrix_contains(&m, 1)) { return 8; }
if (!igraph_matrix_contains(&m, 6)) { return 8; }
/* igraph_matrix_search */
printf("igraph_matrix_search\n");
if (!igraph_matrix_search(&m, 0, 6.0, &i2, &i, &j)) { return 9; }
if (i2 != 5 || i != 2 || j != 1) { return 9; }
/* igraph_matrix_remove_row */
printf("igraph_matrix_remove_row\n");
igraph_matrix_remove_row(&m, 1);
print_matrix(&m);
igraph_matrix_resize(&m,5,4);
byrow(&m);
igraph_matrix_remove_row(&m, 4);
print_matrix(&m);
igraph_matrix_remove_row(&m, 0);
print_matrix(&m);
/* igraph_matrix_select_cols */
printf("igraph_matrix_select_cols\n");
igraph_matrix_resize(&m, 6, 5);
apply(m, igraph_matrix_set(&m, i, j, j), (void) 0 );
igraph_vector_resize(&v, 3);
VECTOR(v)[0]=0; VECTOR(v)[1]=4; VECTOR(v)[2]=2;
igraph_matrix_select_cols(&m, &m2, &v);
print_matrix(&m2);
igraph_vector_resize(&v, 1);
igraph_matrix_select_cols(&m, &m2, &v);
print_matrix(&m2);
igraph_vector_clear(&v);
igraph_matrix_select_cols(&m, &m2, &v);
if (!igraph_matrix_empty(&m2)) { return 9; }
igraph_vector_destroy(&v);
igraph_matrix_destroy(&m2);
igraph_matrix_destroy(&m);
if (IGRAPH_FINALLY_STACK_SIZE() != 0) return 10;
return 0;
}