igraph_matrix_e
0 1 2 
3 4 5 
6 7 8 
9 10 11 
igraph_matrix_e_ptr
0 1 2 
3 4 5 
6 7 8 
9 10 11 
igraph_matrix_set
[        0        0        0
         1        1        1
         2        2        2
         3        3        3 ]
[        0        1        2
         0        1        2
         0        1        2
         0        1        2 ]
igraph_matrix_fill
[       42       42       42
        42       42       42
        42       42       42
        42       42       42 ]
[    -42.1    -42.1    -42.1
     -42.1    -42.1    -42.1
     -42.1    -42.1    -42.1
     -42.1    -42.1    -42.1 ]
igraph_matrix_update
[        0        1        2
         3        4        5
         6        7        8
         9       10       11 ]
igraph_matrix_rbind
[        0        1        2
         3        4        5
         6        7        8
         9       10       11
         0        1        2
         3        4        5
         6        7        8
         9       10       11 ]

[        0        1        2
         3        4        5
         6        7        8
         9       10       11
         0        1        2
         3        4        5
         6        7        8
         9       10       11 ]

[        0        1        2
         3        4        5
         6        7        8
         9       10       11
         0        1        2
         3        4        5
         6        7        8
         9       10       11 ]
igraph_matrix_cbind
[        0        1        2        0        1
         3        4        5        2        3
         6        7        8        4        5
         9       10       11        6        7 ]
igraph_matrix_swap
[        0        1
         2        3
         4        5
         6        7 ]
[        0        0
         0        0
         0        0
         0        0 ]
igraph_matrix_get_row
igraph_matrix_set_row
[        0        1
         2        3
         4        5
         6        7 ]
igraph_matrix_set_col
[        0        1
         2        3
         4        5
         6        7 ]
igraph_matrix_swap_rows
[        4        5
         2        3
         0        1
         6        7 ]
igraph_matrix_swap_cols
[        5        4
         3        2
         1        0
         7        6 ]
igraph_matrix_add_constant
[        5        4
         3        2
         1        0
         7        6 ]
[        4        3
         2        1
         0       -1
         6        5 ]
igraph_matrix_add
[        0        2
         4        6
         8       10
        12       14 ]
igraph_matrix_sub
[        0        1
         2        3
         4        5
         6        7 ]
igraph_matrix_mul_elements
[        0        1
         4        9
        16       25
        36       49 ]
igraph_matrix_div_elements
[        0      0.5
         2      4.5
         8     12.5
        18     24.5 ]
igraph_matrix_min
igraph_matrix_which_min
igraph_matrix_which_max
igraph_matrix_minmax
-2 100
igraph_matrix_which_minmax
igraph_matrix_isnull
igraph_matrix_empty
igraph_matrix_is_symmetric
igraph_matrix_prod
[        1        2
         3        4
         5        6 ]
product: 720
igraph_matrix_rowsum
( 3 7 11 )
igraph_matrix_colsum
( 9 12 )
igraph_matrix_contains
igraph_matrix_search
igraph_matrix_remove_row
[        1        2
         5        6 ]
[        0        1        2        3
         4        5        6        7
         8        9       10       11
        12       13       14       15 ]
[        4        5        6        7
         8        9       10       11
        12       13       14       15 ]
igraph_matrix_select_cols
[        0        4        2
         0        4        2
         0        4        2
         0        4        2
         0        4        2
         0        4        2 ]
[        0
         0
         0
         0
         0
         0 ]