% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/acs.R
\name{ACSfunctions}
\alias{ACSfunctions}
\alias{acfburrXII}
\alias{acfparetoII}
\alias{acffgn}
\alias{acfweibull}
\title{Parametric autocorrelation structure functions}
\usage{
acfburrXII(t, scale, shape1, shape2)

acfparetoII(t, scale, shape)

acffgn(t, H)

acfweibull(t, scale, shape)
}
\arguments{
\item{t}{lag value (non-negative numeric).}

\item{scale}{scale parameter (must be > 0).}

\item{shape, shape1, shape2}{shape parameters (must be > 0).}

\item{H}{Hurst exponent for the FGN model (0.5 < H < 1).}
}
\value{
A numeric value (or \code{NaN} if parameters are invalid).
}
\description{
Parametric functions used internally by \code{\link{acs}} to evaluate
autocorrelation at lag \code{t}.  These are internal helpers and are not
part of the public API; call them via \code{acs(id, ...)}.
}
\keyword{internal}
