/* Return the number of items in the list */
int
-subc_list_double_count(subc_list_double *l)
+subc_list_double_count(const subc_list_double *l)
{
return l->n_data;
}
/* Index into the list (array) */
double
-subc_list_double_at(subc_list_double *l, int idx)
+subc_list_double_at(const subc_list_double *l, int idx)
{
return l->data[idx];
}