gtild(1)

NAME
gtild - tilde operation

CALLING SEQUENCE
[gt]=gtild(g)
[at,bt,ct,dt]=gtild(a,b,c,[d])

PARAMETERS

g   : linear system (syslin list) or g=g(s) (rational or polynomial)

gt  : linear system (syslin list) (same as g)

DESCRIPTION
gtild returns gtild(s) = g(-s)' (in transfer form or in state-space).

g is any matrix (constant, polynomial, transfer matrix, or state-space representaion with possibly a polynomial D matrix).

EXAMPLE
s=poly(0,'s');w=[1/s,s;2/(s+1),1];gtild(w) ss2tf(gtild(tf2ss(w)))

SEE ALSO
syslin, horner