Function builtin_qnorm 

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

Normal quantile function (inverse CDF).

@param p probability vector @param mean mean of the distribution (default 0) @param sd standard deviation (default 1) @param lower.tail logical; if TRUE (default), p is P(X <= q), else P(X > q) @param log.p logical; if TRUE, p is given as log(p) (default FALSE) @return numeric vector of quantiles