File: parrot.cat

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scilab 2.6-4
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parrot            Scilab Group            Scilab Function            parrot
NAME
   parrot - Parrot's problem
  
CALLING SEQUENCE
 K=parrot(D,r)
PARAMETERS
 D,K        : matrices
            
 r          : 1X2 vector (dimension of the 2,2 part of D)
            
DESCRIPTION
   Given a matrix D partionned as [D11 D12; D21 D22] where
  size(D22)=r=[r1,r2] compute a matrix K such that largest singular value
  of [D11 D12; D21 D22+K] is minimal (Parrot's problem)
  
SEE ALSO
   h_inf_st