Function builtin_dnorm 

fn builtin_dnorm(
    args: &[RValue],
    named: &[(String, RValue)],
) -> Result<RValue, RError>

Normal density function.

@param x quantile vector @param mean mean of the distribution (default 0) @param sd standard deviation (default 1) @param log logical; if TRUE, return log-density (default FALSE) @return numeric vector of densities