-- +---------------------------+
-- |   designer : Tim Pagden   |
-- |    opened: 30 Sep 1993    |
-- +---------------------------+

library maths;

package matrix_class is
  use maths.maths_class.all;

-- ***   TYPES   ***

  type integer_vector is array (INTEGER range <>) of INTEGER;
  type single_vector is array (INTEGER range <>) of single;
  type double_vector is array (INTEGER range <>) of double;

  type integer_matrix is array (INTEGER range <>, INTEGER range <>) of INTEGER;
  type single_matrix is array (INTEGER range <>, INTEGER range <>) of single;
  type double_matrix is array (INTEGER range <>, INTEGER range <>) of double;

-- ***   SUBPROGRAMS   ***


  function sum_of_products (  -- 19.11.94
    lower_limit : INTEGER;
    upper_limit : INTEGER;
    a_in : single_vector;
    b_in : single_vector
  ) return single;

  function shift_fifo (
    fifo : single_vector;
    -- signal fifo : single_vector;
    data_in : single
  ) return single_vector;

  function reverse_order (table : single_vector) return single_vector;

  function "*" (
    multiplicand : single_matrix;
    multiplier   : single_matrix
  ) return single_matrix;

end matrix_class;