>> [K,Tzw, gsubopt]=hinfsyn(G,ny,nu, gmin, gmax,tol)
where ny = dimensions of y, nu = dimensions of u, gmin = a
lower bound, gmax= an upper bound for gopt and tol is a
tolerance to the optimal value. Set ny =
1, nu = 1, gmin = 0,
gmax= 10, tol = 0.0001; we get gsubopt=0.7849 and a
suboptimal controller
If we set tol = 0.01, we would get gsubopt=0.7875
and a suboptimal controller