math_utility_pkg.vhdl

-- --------------------------------------------------------------------
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--
--   Title      :  Math utility package
--
--   Library   :  This package shall be compiled into a library 
--                symbolically named IEEE. 
--
--   Developers:  IEEE DASC P1076
--
--   Purpose   :  Definitions for ue in fixed point and floating point
--                arithmetic packages
--
--   Limitation:  
--
-- --------------------------------------------------------------------
-- Version    : $Revision: 1.2 $
-- Date       : $Date: 2006-06-16 09:53:44-04 $
-- --------------------------------------------------------------------

package math_utility_pkg is

  -- Types used for generics of fixed_generic_pkg
  
  type fixed_round_style_type is (fixed_round, fixed_truncate);
  
  type fixed_overflow_style_type is (fixed_saturate, fixed_wrap);

  -- Type used for generics of float_generic_pkg

  -- These are the same as the C FE_TONEAREST, FE_UPWARD, FE_DOWNWARD,
  -- and FE_TOWARDZERO floating point rounding macros.

  type round_type is (round_nearest,    -- Default, nearest LSB '0'
                      round_inf,        -- Round toward positive infinity
                      round_neginf,     -- Round toward negative infinity
                      round_zero);      -- Round toward zero (truncate)

end package math_utility_pkg;