dbinorm: Internal: Bivariate standard normal density
Description
Evaluate the density of the bivariate standard normal distribution with
correlation rho at (u, v). Used internally by polychor() to
compute the gradient of the polychoric log-likelihood. Implemented by Kjell S. Slupphaug.
Usage
dbinorm(u, v, rho, force.zero = FALSE, rho.lim = 0.9999)