-- ----------------------------------------------------------------- -- -- Copyright 2019 IEEE P1076 WG Authors -- -- See the LICENSE file distributed with this work for copyright and -- licensing information and the AUTHORS file. -- -- This file to you under the Apache License, Version 2.0 (the "License"). -- You may obtain a copy of the License at -- -- http://www.apache.org/licenses/LICENSE-2.0 -- -- Unless required by applicable law or agreed to in writing, software -- distributed under the License is distributed on an "AS IS" BASIS, -- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or -- implied. See the License for the specific language governing -- permissions and limitations under the License. -- -- Title : Fixed Point and Floating Point types package -- -- Library : This package shall be compiled into a library -- symbolically named IEEE. -- -- Developers: Accellera VHDL-TC and IEEE P1076 Working Group -- -- Purpose : Definitions for use in fixed point and floating point -- arithmetic packages -- -- Note : This package may be modified to include additional data -- : required by tools, but it must in no way change the -- : external interfaces or simulation behavior of the -- : description. It is permissible to add comments and/or -- : attributes to the package declarations, but not to change -- : or delete any original lines of the package declaration. -- : The package body may be changed only in accordance with -- : the terms of Clause 16 of this standard. -- : -- -------------------------------------------------------------------- -- $Revision: 1220 $ -- $Date: 2008-04-10 17:16:09 +0930 (Thu, 10 Apr 2008) $ -- -------------------------------------------------------------------- package fixed_float_types 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 fixed_float_types;