`size'
------

size(VECT|MAT)
     :: A list containing the number of elements of the given vector,
     `[size of VECT]', or a list containing row size and column size of
     the given matrix, `[row size of MAT, column size of MAT]'.

RETURN
     list

VECT
     vector

MAT
     matrix

   * Return a list consisting of the dimension of the vector VECT, or a
     list consisting of the row size and column size of the matrix
     MATRIX.

   * Use `length()' for the size of LIST, and `nmono()' for the number
     of monomials with non-zero coefficients in a rational expression.

     [0] A = newvect(4);
     [ 0 0 0 0 ]
     [1] size(A);
     [4]
     [2] B = newmat(2,3,[[1,2,3],[4,5,6]]);
     [ 1 2 3 ]
     [ 4 5 6 ]
     [3] size(B);
     [2,3]

References
     *Note `car cdr cons append reverse length': car cdr cons append
     reverse length, *Note `nmono': nmono.

