horner            Scilab Group            Scilab Function            horner
NAME
   horner - polynomial/rational evaluation
  
CALLING SEQUENCE
 horner(P,x) 
PARAMETERS
 P    : polynomial or rational matrix
      
 x    : real number or polynomial or rational
      
DESCRIPTION
   evaluates the polynomial or rational  matrix P = P(s) when the variable s
  of the  polynomial is replaced by x:
  
   horner(P,x)=P(x)
  
   Example (Bilinear transform): Assume P = P(s) is  a rational matrix  then
  the rational matrix  P((1+s)/(1-s)) is obtained by horner(P,(1+s)/(1-s)).
  
   To evaluate a rational matrix at given frequencies use  preferably the
  freq primitive.
  
EXAMPLES
 s=poly(0,'s');M=[s,1/s];
 horner(M,1)
 horner(M,%i)
 horner(M,1/s)
SEE ALSO
   freq, repfreq, evstr