% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/likelihood-multiphase.R
\name{.hzr_g3_phase_derivatives}
\alias{.hzr_g3_phase_derivatives}
\title{Finite-difference derivatives of G3 phase Phi and phi w.r.t. shape params}
\usage{
.hzr_g3_phase_derivatives(time, tau, gamma, alpha, eta, h = 1e-05)
}
\arguments{
\item{time}{Numeric vector of positive times.}

\item{tau}{Positive scalar scale parameter.}

\item{gamma}{Positive scalar time exponent.}

\item{alpha}{Non-negative scalar shape parameter.}

\item{eta}{Positive scalar outer exponent.}

\item{h}{Relative step size for finite differences (default 1e-5).}
}
\value{
Named list with Phi, phi, and 8 derivative vectors.
}
\description{
Computes the G3 cumulative intensity, its time derivative, and their
partial derivatives with respect to log_tau, gamma, alpha, and eta using
central finite differences.
}
\keyword{internal}
