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$$$$ XTMX     NOTICE  CHAT      11/09/12    21:18:35     7124           
                                             DATE     11/09/12

    Operateur XTMX                           Voir aussi : YTMX, XTX, XTY
    --------------   
    FLOT1 = XTMX  CHPO1 RIG1 ;


    Description :
    _____________

    The XTMX operator calculates the quadratic form application 
 associated with a stiffness and a field by points.

    Contents :
    _________

    CHPO1 : field by points (CHPOINT type)

    RIG1  : stiffness matrix (RIGIDITE type)

    FLOT1 : generated object (FLOTTANT type)


    Remark : 
    The transposition rule which associates the primal unknown X
    to the dual unknown MX uses the names defined in bdata (CCHAMP)
    (leading to the calculation of : UX*FX + UY*FY + ...). 
    The use of another rule is possible by using the following syntax :
    flot1 = XTY chpo1 (Rig1 * chpo1) lmot1 lmot2;
    where lmot1 and lmot2 are LISTMOTS defined by user.