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

library maths;

package matrix_class is  
  use maths.maths_class.all;

-- ***   TYPES   ***

  type vfp_ulogic is ('0', '1', 'Z', 'X');
  
  type vfp_ulogic_2D_array is array (INTEGER range <>, INTEGER range <>) of vfp_ulogic;
  
  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 to_std_ulogic_vector (a: word) return std_ulogic_vector;                
  
  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;
  
  procedure split (
    input_string : STRING; 
    output_array : out integer_vector; 
    separator    : STRING;
    num_fields   : out INTEGER
  );

end matrix_class;




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