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$$$$ ORTH     NOTICE  CHAT      11/09/12    21:17:28     7124           
                                             DATE     11/09/12
                                             
    Operateur ORTHOGONALISER                 Voir aussi : SUIT
    ------------------------                                  
    CHPO1 = ORTH  ('SEMBLABLE') CHPO2 LCHPO1 LREEL1 (LCHPO2) RIG1 ...
                                  ...  ( FLOT1 (N1) ) ;


    Description :
    _____________

    The ORTHOGONALISER operator orthogonalizes a CHPO2 object
 with respect to a series of objects Ui which are orthogonal
 between themselves and are of same type as CHPO2. It is
 essential that the objects Ui be orthogonal between themselves.
 
    Contents :
    __________

   The selected orthogonality is defined by means of a RIG1 
 object such as the following expression:

                CHPO2 * RIG1 * U(i)

 be significant and so that it might be compared to 0.

    'SEMBLABLE': key word, valid if CHPO2 is of CHPOINT type. It
                 means that all the CHPOINTs are undoubtfully lying 
                 on the same points, with the same components. This
                 option speeds up the calculation, but requires 
                 that the user master the supplied operands.

     LCHPO1    : series of aforementioned U(i) (LISTCHPO type)

     LREEL1    : series of products U(i)*RIG1*U(i) (LISTREEL type)

     LCHPO2    : series of products RIG1*U(i) (LISTCHPO type)
                 This series, once provided, makes it possible 
                 to avoid resuming the products RIG1*U(i)

     FLOT1     : requested orthogonality precision (FLOTTANT type).
                 It is automatically adjusted in relation to the
                 difficulty of the problem: truncation errors are
                 more important for a serious problem.

     N1        : maximum number of orthogonalizations (ENTIER type)
                 required for compensating for round-off errors
                 (this does not make sense if a FLOT1 precision has
                 not been supplied)
                 There is not much point in taking N1 greater
                 than 1.

     CHPO2     : object to be orthogonalized (CHPOINT type)

     CHPO1     : generated object (CHPOINT type)