File: polar.cat

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scilab 2.6-4
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polar            Scilab Group            Scilab Function              polar
NAME
   polar - polar form
  
CALLING SEQUENCE
 [Ro,Theta]=polar(A)
PARAMETERS
 A    : real or complex square matrix
      
 Ro, Theta
       : real matrices
      
DESCRIPTION
   returns the polar form of A i.e.:
  
   A=Ro*expm(%i*Theta) Ro symmetric >=0 and Theta hermitian >=0.
  
EXAMPLE
 A=rand(5,5);
 [Ro,Theta]=polar(A);
 norm(A-Ro*expm(%i*Theta),1)
SEE ALSO
   expm, svd
  
AUTHOR
   F. D.