 Usage:  y = svd(x)  
 
 Input:

  x                      n x p matrix 
                         
 Output:

  y.u                    n x p matrix, the left matrix u 
                         
  y.l                    p vector, elements of the diagonale of matrix l 
                         
  y.v                    p x p matrix, the right matrix v 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
