Internal function that calculates the log prior, used in MCMC estimation of the BBM+V model.
log_prior_nclades_plus_3_pars(type = NULL, shape = NULL, pars, n_clades)
A vector giving the type of prior for each parameter.
A list giving the shape of the prior for each parameter.
The parameter values at which the prior should be evaluated.
The number of clades included in the multiclade analysis.