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$$$$ CUBP     NOTICE  CHAT      11/09/12    21:15:41     7124           
                                             DATE     11/09/12

    Operateur CUBP                           Voir aussi : CUBT
    --------------                                        COUR   
    LIG1 = CUBP  (N1) POIN1 POIN2 POIN3 POIN4 ('UNIF') ('DINI' DENS1);
                                                       ('DFIN' DENS2);


    Description :
    _____________

    The CUBP operator constructs an arc of a cubic passing 
 through the points POIN1, POIN2, POIN3 and POIN4.

    Contents :
    __________

    POINi : points through which the arc of the cubic passes
            (POINT type)

    DENS1 : density associated with the POIN1 point (FLOTTANT
            type)

    DENS2 : density associated with the POIN4 point (FLOTTANT
            type)

    N1    : number of generated elements (ENTIER type)

    LIG1  : arc of a cubic (MAILLAGE type)


    Note 1 :
    _________

    
    If N1 is not specified, the number of generated elements as 
 well as their size will be computed according to the extreme point
 densities.
    If N1 is specified and positive, N1 elements of equal length
 will be generated.
    If N1 is negative, N1 elements will be generated and their  
 size will be computed according to the extreme point densities. 


    Note 2 :
    _________

    If the densities associated with the POIN1 and POIN4 points are 
 inaccurate, they may be increased. The accurate value of the initial
 point will be mentioned after the 'DINI' key word, that of the 
 third point will be mentioned after the 'DFIN' key word.


    Note 3 :
    __________

    If the 'UNIF' key word is supplied, the points will be 
 distributed along the arc of the cubic in relation to the
 curvilinear abscissa. Otherwise, the distribution will be 
 connected with the parameterization stemming from the position
 of intermediate points.