linf

linf — infinity norm

Calling sequence

linf(g [,eps],[tol])

`g`	: is a `syslin` linear system.
`eps`	: is error tolerance on n.
`tol`	: threshold for imaginary axis poles.

returns the L_infinity norm of g.



    n=sup [sigmax(g(jw)] 
       w

(sigmax largest singular value).