anchor.diff:          double base);
   ----
   Compute the relative entropy between two distributions with equal support size.
  +
  +[horizontal]
  +Header::
  +    `inform/shannon.h`
   ****
   
   ****
  
positive.code:         inform_dist const **marginals, size_t n, double base);
  ----
  Compute the multivariate mutual information between a collection of distributions.
  ****
  
negative.code:         size_t const *marginal_events, double base);
  ----
  Compute the multivariate point-wise mutual information between a collection of distributions.
  
  [horizontal]
  Header::
      `inform/shannon.h`
  ****
  
  ****
  