ar1_cov_chol_irregular
                        Upper triangular Cholesky decomposition for a
                        stationary Gaussian AR(1) process covariance
                        matrix, observed at irregularly spaced time
                        points.
ar1_cov_consecutive     Covariance matrix for a stationary Gaussian
                        AR(1) process, observed at consecutive
                        timepoints.
ar1_cov_irregular       Covariance matrix for a stationary Gaussian
                        AR(1) process, observed at irregularly spaced
                        time points.
ar1_cross_cov           Cross-covariance matrix of a stationary
                        Gaussian AR(1) process.
ar1_lpdf                Evaluate the log-density of a stationary
                        Gaussian AR(1) process.
ar1_prec_chol_irregular
                        Upper Cholesky triangle of the precision matrix
                        of a stationary Gaussian AR(1) process,
                        observed at irregularly spaced time points.
ar1_prec_consecutive    Sparse precision matrix for a stationary
                        Gaussian AR(1) process, observed at consecutive
                        timepoints.
ar1_prec_irregular      Precision matrix for a stationary Gaussian
                        AR(1) process, observed at irregularly spaced
                        time points.
ar1_sim_conditional     Simulate from a stationary Gaussian AR(1)
                        process.
ar1_sim_consecutive     Simulate from a stationary Gaussian AR(1)
                        process.
ar1_sim_irregular       Simulate from a stationary Gaussian AR(1)
                        process at irregular times.
band1_backsolve         Backsolve with band 1 upper Cholesky.
chol_tridiag_upper      Upper Cholesky decomposition of a tridiagonal
                        matrix.
dprec_drho              Derivative of the precision matrix for a
                        stationary Gaussian AR(1) process.
dprecchol_drho          Derivative of the upper Cholesky triangle of
                        the precision matrix of a stationary Gaussian
                        AR(1) process.
mult_U_band1U           Multiply an upper triangular matrix with a band
                        1 upper triangular matrix.
