of the algorithms are collected in the tar file
                -rob_sc.tar
and in the zip file
                -rob_sc.zip
In Windows both of the files can be extracted by winzip. In Linux, Unix and Mac-OS the tar file can be extracted by typing
                    > tar -xvf rob_sc.tar
while the zip file can be uncompressed by typing
                    >unzip rob_sc.zip



Routines included:
The package includes the routines listed below. For details please see the comments at the beginning of each routine and Chapter 6 of the thesis.


Visualization routines:

-- plot_cdi	:	Plots the function that is minimized in the computation of the continuous distance to instability of a matrix.
-- plot_ddi	:	Plots the function that is minimized in the computation of the discrete distance to instability of a matrix.
-- plot_kreiss_constant_cont	:	Plots the ratio (epsln-pseudospectral abscissa)/epsln as a function of epsln.
-- plot_kreiss_constant_disc	:	Plots the ratio (epsln-pseudospectral radius-1)/epsln as a function of epsln.
-- plot_num_rad	:	Plots the function that is maximized in the computation of the numerical radius.
-- plot_poly_cdi	:	Plots the function that is minimized in the computation of the continuous distance to instability of a matrix polynomial.
-- plot_poly_ddi	:	Plots the function that is minimized in the computation of the discrete distance to instability of a matrix polynomial.
-- poly_ps	:	Plots the epsln-pseudospectra of a matrix polynomial.
-- rect_poly_ps	:	Plots the epsln-level set of the function that is minimized in the computation of the higher order distance to uncontrollability.

First order robust stability routines:

-- pspa	:	Computes the epsln-pseudospectral abscissa of a matrix.
-- pspr	:	Computes the epsln-pseudospectral radius of a matrix.
-- cdi	:	Computes the continuous distance to instability of a matrix.
-- ddi	:	Computes the discrete distance to instability of a matrix.
-- numr	:	Computes the numerical radius of a matrix.

Higher order robust stability routines:

-- poly_pspa	:	Computes the epsln-pseudospectral abscissa of a matrix polynomial.
-- poly_pspr	:	Computes the epsln-pseudospectral radius of a matrix polynomial.
-- poly_cdi	:	Computes the continuous distance to instability of a matrix polynomial.
-- poly_ddi	:	Computes the discrete distance to instability of a matrix polynomial.

First order distance to uncontrollability routine:
-- dist_uncont_hybrid: Computes the distance to uncontrollability of a first order system.


Higher order distance to unconrollability routine:
-- poly_dist_uncont: Computes the distance to uncontrollability of a higher order system.


Copyright:
Copyright for each routine is held by the authors mentioned at the start of the routine.

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