DATE     94/01/10

    Opérateur +                                See also :- 
    -----------                                          * 
                                                         / 
    RESU1 = OBJET1 + OBJET2 ;                            ** 

    Description :
    _____________

    The + operator does the sum of the objects OBJET1 and
  OBJET2.

    Possible operations :
    ______________________

-----------------------------------------------------------------
|      OBJET1       |       OBJET2         |     RESU1          |
-----------------------------------------------------------------
|      ENTIER       |       ENTIER         |      ENTIER        |
|      ENTIER       |      FLOTTANT        |     FLOTTANT       |
|     FLOTTANT      |      FLOTTANT        |     FLOTTANT       |
|     CHPOINT       |      CHPOINT         |     CHPOINT        |
|     CHPOINT       |      FLOTTANT        |     CHPOINT        |
|     MCHAML        |      MCHAML          |     MCHAML         |
|     EVOLUTION     |      EVOLUTION       |     EVOLUTION      |
|     LISTENTI      |      LISTENTI        |     LISTENTI       |
|     LISTREEL      |      LISTREEL        |     LISTREEL       |
|  TABLE 'VECTEUR'  |    TABLE 'VECTEUR'   |   TABLE 'VECTEUR'  |
-----------------------------------------------------------------


    Note 1 :
    _________

    The + operator calculates the sum of two TABLE type objects of
 'VECTEUR' subtype. The tables must be likely to be added, i.e. the
 elements that have an index in common must be of ENTIER or FLOTTANT
 type.

    Note 2 :
    _________

    When the + operator calculates the sum of two EVOLUTION type objects,
 both objects must have the same type, i.e. they must be either real
 or complex :

    a) Real EVOLUTION objects :

    The sum is done for : - OBJET1=f(x) defined on the D1 domain
                          - OBJET2=g(x) defined on the D2 domain
 then the sum is calculated on the common domain (D1 and D2).

    b) Complex EVOLUTION objects :

    Both objects must have the same abscissae.
 Each of the two objects must be either "PREE PIMA" or "MODU PHAS".
 The RESULTAT (result) object will have the same type as OBJET1.

    Note 3 :
    _________

    When the + operator calculates the sum of two lists of integers
 or real numbers, they must have the same number of elements.

    Note 4 :
    _________

    When the + operator calculates the sum of two MCHAML, it does
 the sum component by component and subarea by subarea for identical
 elementary subareas and for idential names of components; otherwise
 it performs an adjunct of the two fields.

    If the MCHAML point to non FLOTTANT (floating) objects, the object
 with a non-zero pointer is kept. If both the pointers are different
 from zero, an addition is performed in the cases of 'POINT' and
 'LISTREEL'. In all other cases, an error message is displayed.