 Usage:  {A,b,ctrl}=absepnewton(e,S1,S2,itmax,eps,A0,b0,aus)  
 
 Input:

  e                      numeric; efficiency loss to attain; 
                         
  S1                     numeric; Variance of X1 (the clipped part of X); 
                         
  S2                     numeric; Variance of X2 (the unmodified part of X); 
                         
  itmax                  integer; maximal number of iterations 
                         
  eps                    numeric; exactitude 
                         
  A0                     numeric; starting value for a 
                         
  b0                     numeric; starting value for b 
                         
  aus                    integer; decides whether to write results on output [1] or not (else) 
                         
 Output:

  A                      numeric; Lagrange-Multiplyer to achieve Fisher-Consistency 
                         
  b                      numeric; clipping height achieving e as rel. effiency loss 
                         
  ctrl                   numeric; decides whether convergence "happened" 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
