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git-svn-id: http://moon:8086/svn/vhdl/trunk@1073 cc03376c-175c-47c8-b038-4cd826a8556b
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jens
2015-02-07 06:35:28 +00:00
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commit e17a1eefb5
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lib/Standard/ieee/new/std_logic_arith_syn.vhdl
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--------------------------------------------------------------------------
-- --
-- Copyright (c) 1990,1991,1992 by Synopsys, Inc. All rights reserved. --
-- --
-- This source file may be used and distributed without restriction --
-- provided that this copyright statement is not removed from the file --
-- and that any derivative work contains this copyright notice. --
-- --
-- Package name: STD_LOGIC_ARITH --
-- --
-- Purpose: --
-- A set of arithemtic, conversion, and comparison functions --
-- for SIGNED, UNSIGNED, SMALL_INT, INTEGER, --
-- STD_ULOGIC, STD_LOGIC, and STD_LOGIC_VECTOR. --
-- --
--------------------------------------------------------------------------
library IEEE;
use IEEE.std_logic_1164.all;
package std_logic_arith is
type UNSIGNED is array (NATURAL range <>) of STD_LOGIC;
type SIGNED is array (NATURAL range <>) of STD_LOGIC;
subtype SMALL_INT is INTEGER range 0 to 1;
function "+"(L: UNSIGNED; R: UNSIGNED) return UNSIGNED;
function "+"(L: SIGNED; R: SIGNED) return SIGNED;
function "+"(L: UNSIGNED; R: SIGNED) return SIGNED;
function "+"(L: SIGNED; R: UNSIGNED) return SIGNED;
function "+"(L: UNSIGNED; R: INTEGER) return UNSIGNED;
function "+"(L: INTEGER; R: UNSIGNED) return UNSIGNED;
function "+"(L: SIGNED; R: INTEGER) return SIGNED;
function "+"(L: INTEGER; R: SIGNED) return SIGNED;
function "+"(L: UNSIGNED; R: STD_ULOGIC) return UNSIGNED;
function "+"(L: STD_ULOGIC; R: UNSIGNED) return UNSIGNED;
function "+"(L: SIGNED; R: STD_ULOGIC) return SIGNED;
function "+"(L: STD_ULOGIC; R: SIGNED) return SIGNED;
function "+"(L: UNSIGNED; R: UNSIGNED) return STD_LOGIC_VECTOR;
function "+"(L: SIGNED; R: SIGNED) return STD_LOGIC_VECTOR;
function "+"(L: UNSIGNED; R: SIGNED) return STD_LOGIC_VECTOR;
function "+"(L: SIGNED; R: UNSIGNED) return STD_LOGIC_VECTOR;
function "+"(L: UNSIGNED; R: INTEGER) return STD_LOGIC_VECTOR;
function "+"(L: INTEGER; R: UNSIGNED) return STD_LOGIC_VECTOR;
function "+"(L: SIGNED; R: INTEGER) return STD_LOGIC_VECTOR;
function "+"(L: INTEGER; R: SIGNED) return STD_LOGIC_VECTOR;
function "+"(L: UNSIGNED; R: STD_ULOGIC) return STD_LOGIC_VECTOR;
function "+"(L: STD_ULOGIC; R: UNSIGNED) return STD_LOGIC_VECTOR;
function "+"(L: SIGNED; R: STD_ULOGIC) return STD_LOGIC_VECTOR;
function "+"(L: STD_ULOGIC; R: SIGNED) return STD_LOGIC_VECTOR;
function "-"(L: UNSIGNED; R: UNSIGNED) return UNSIGNED;
function "-"(L: SIGNED; R: SIGNED) return SIGNED;
function "-"(L: UNSIGNED; R: SIGNED) return SIGNED;
function "-"(L: SIGNED; R: UNSIGNED) return SIGNED;
function "-"(L: UNSIGNED; R: INTEGER) return UNSIGNED;
function "-"(L: INTEGER; R: UNSIGNED) return UNSIGNED;
function "-"(L: SIGNED; R: INTEGER) return SIGNED;
function "-"(L: INTEGER; R: SIGNED) return SIGNED;
function "-"(L: UNSIGNED; R: STD_ULOGIC) return UNSIGNED;
function "-"(L: STD_ULOGIC; R: UNSIGNED) return UNSIGNED;
function "-"(L: SIGNED; R: STD_ULOGIC) return SIGNED;
function "-"(L: STD_ULOGIC; R: SIGNED) return SIGNED;
function "-"(L: UNSIGNED; R: UNSIGNED) return STD_LOGIC_VECTOR;
function "-"(L: SIGNED; R: SIGNED) return STD_LOGIC_VECTOR;
function "-"(L: UNSIGNED; R: SIGNED) return STD_LOGIC_VECTOR;
function "-"(L: SIGNED; R: UNSIGNED) return STD_LOGIC_VECTOR;
function "-"(L: UNSIGNED; R: INTEGER) return STD_LOGIC_VECTOR;
function "-"(L: INTEGER; R: UNSIGNED) return STD_LOGIC_VECTOR;
function "-"(L: SIGNED; R: INTEGER) return STD_LOGIC_VECTOR;
function "-"(L: INTEGER; R: SIGNED) return STD_LOGIC_VECTOR;
function "-"(L: UNSIGNED; R: STD_ULOGIC) return STD_LOGIC_VECTOR;
function "-"(L: STD_ULOGIC; R: UNSIGNED) return STD_LOGIC_VECTOR;
function "-"(L: SIGNED; R: STD_ULOGIC) return STD_LOGIC_VECTOR;
function "-"(L: STD_ULOGIC; R: SIGNED) return STD_LOGIC_VECTOR;
function "+"(L: UNSIGNED) return UNSIGNED;
function "+"(L: SIGNED) return SIGNED;
function "-"(L: SIGNED) return SIGNED;
function "ABS"(L: SIGNED) return SIGNED;
function "+"(L: UNSIGNED) return STD_LOGIC_VECTOR;
function "+"(L: SIGNED) return STD_LOGIC_VECTOR;
function "-"(L: SIGNED) return STD_LOGIC_VECTOR;
function "ABS"(L: SIGNED) return STD_LOGIC_VECTOR;
function "*"(L: UNSIGNED; R: UNSIGNED) return UNSIGNED;
function "*"(L: SIGNED; R: SIGNED) return SIGNED;
function "*"(L: SIGNED; R: UNSIGNED) return SIGNED;
function "*"(L: UNSIGNED; R: SIGNED) return SIGNED;
function "*"(L: UNSIGNED; R: UNSIGNED) return STD_LOGIC_VECTOR;
function "*"(L: SIGNED; R: SIGNED) return STD_LOGIC_VECTOR;
function "*"(L: SIGNED; R: UNSIGNED) return STD_LOGIC_VECTOR;
function "*"(L: UNSIGNED; R: SIGNED) return STD_LOGIC_VECTOR;
function "<"(L: UNSIGNED; R: UNSIGNED) return BOOLEAN;
function "<"(L: SIGNED; R: SIGNED) return BOOLEAN;
function "<"(L: UNSIGNED; R: SIGNED) return BOOLEAN;
function "<"(L: SIGNED; R: UNSIGNED) return BOOLEAN;
function "<"(L: UNSIGNED; R: INTEGER) return BOOLEAN;
function "<"(L: INTEGER; R: UNSIGNED) return BOOLEAN;
function "<"(L: SIGNED; R: INTEGER) return BOOLEAN;
function "<"(L: INTEGER; R: SIGNED) return BOOLEAN;
function "<="(L: UNSIGNED; R: UNSIGNED) return BOOLEAN;
function "<="(L: SIGNED; R: SIGNED) return BOOLEAN;
function "<="(L: UNSIGNED; R: SIGNED) return BOOLEAN;
function "<="(L: SIGNED; R: UNSIGNED) return BOOLEAN;
function "<="(L: UNSIGNED; R: INTEGER) return BOOLEAN;
function "<="(L: INTEGER; R: UNSIGNED) return BOOLEAN;
function "<="(L: SIGNED; R: INTEGER) return BOOLEAN;
function "<="(L: INTEGER; R: SIGNED) return BOOLEAN;
function ">"(L: UNSIGNED; R: UNSIGNED) return BOOLEAN;
function ">"(L: SIGNED; R: SIGNED) return BOOLEAN;
function ">"(L: UNSIGNED; R: SIGNED) return BOOLEAN;
function ">"(L: SIGNED; R: UNSIGNED) return BOOLEAN;
function ">"(L: UNSIGNED; R: INTEGER) return BOOLEAN;
function ">"(L: INTEGER; R: UNSIGNED) return BOOLEAN;
function ">"(L: SIGNED; R: INTEGER) return BOOLEAN;
function ">"(L: INTEGER; R: SIGNED) return BOOLEAN;
function ">="(L: UNSIGNED; R: UNSIGNED) return BOOLEAN;
function ">="(L: SIGNED; R: SIGNED) return BOOLEAN;
function ">="(L: UNSIGNED; R: SIGNED) return BOOLEAN;
function ">="(L: SIGNED; R: UNSIGNED) return BOOLEAN;
function ">="(L: UNSIGNED; R: INTEGER) return BOOLEAN;
function ">="(L: INTEGER; R: UNSIGNED) return BOOLEAN;
function ">="(L: SIGNED; R: INTEGER) return BOOLEAN;
function ">="(L: INTEGER; R: SIGNED) return BOOLEAN;
function "="(L: UNSIGNED; R: UNSIGNED) return BOOLEAN;
function "="(L: SIGNED; R: SIGNED) return BOOLEAN;
function "="(L: UNSIGNED; R: SIGNED) return BOOLEAN;
function "="(L: SIGNED; R: UNSIGNED) return BOOLEAN;
function "="(L: UNSIGNED; R: INTEGER) return BOOLEAN;
function "="(L: INTEGER; R: UNSIGNED) return BOOLEAN;
function "="(L: SIGNED; R: INTEGER) return BOOLEAN;
function "="(L: INTEGER; R: SIGNED) return BOOLEAN;
function "/="(L: UNSIGNED; R: UNSIGNED) return BOOLEAN;
function "/="(L: SIGNED; R: SIGNED) return BOOLEAN;
function "/="(L: UNSIGNED; R: SIGNED) return BOOLEAN;
function "/="(L: SIGNED; R: UNSIGNED) return BOOLEAN;
function "/="(L: UNSIGNED; R: INTEGER) return BOOLEAN;
function "/="(L: INTEGER; R: UNSIGNED) return BOOLEAN;
function "/="(L: SIGNED; R: INTEGER) return BOOLEAN;
function "/="(L: INTEGER; R: SIGNED) return BOOLEAN;
function SHL(ARG: UNSIGNED; COUNT: UNSIGNED) return UNSIGNED;
function SHL(ARG: SIGNED; COUNT: UNSIGNED) return SIGNED;
function SHR(ARG: UNSIGNED; COUNT: UNSIGNED) return UNSIGNED;
function SHR(ARG: SIGNED; COUNT: UNSIGNED) return SIGNED;
function CONV_INTEGER(ARG: INTEGER) return INTEGER;
function CONV_INTEGER(ARG: UNSIGNED) return INTEGER;
function CONV_INTEGER(ARG: SIGNED) return INTEGER;
function CONV_INTEGER(ARG: STD_ULOGIC) return SMALL_INT;
function CONV_UNSIGNED(ARG: INTEGER; SIZE: INTEGER) return UNSIGNED;
function CONV_UNSIGNED(ARG: UNSIGNED; SIZE: INTEGER) return UNSIGNED;
function CONV_UNSIGNED(ARG: SIGNED; SIZE: INTEGER) return UNSIGNED;
function CONV_UNSIGNED(ARG: STD_ULOGIC; SIZE: INTEGER) return UNSIGNED;
function CONV_SIGNED(ARG: INTEGER; SIZE: INTEGER) return SIGNED;
function CONV_SIGNED(ARG: UNSIGNED; SIZE: INTEGER) return SIGNED;
function CONV_SIGNED(ARG: SIGNED; SIZE: INTEGER) return SIGNED;
function CONV_SIGNED(ARG: STD_ULOGIC; SIZE: INTEGER) return SIGNED;
function CONV_STD_LOGIC_VECTOR(ARG: INTEGER; SIZE: INTEGER)
return STD_LOGIC_VECTOR;
function CONV_STD_LOGIC_VECTOR(ARG: UNSIGNED; SIZE: INTEGER)
return STD_LOGIC_VECTOR;
function CONV_STD_LOGIC_VECTOR(ARG: SIGNED; SIZE: INTEGER)
return STD_LOGIC_VECTOR;
function CONV_STD_LOGIC_VECTOR(ARG: STD_ULOGIC; SIZE: INTEGER)
return STD_LOGIC_VECTOR;
-- zero extend STD_LOGIC_VECTOR (ARG) to SIZE,
-- SIZE < 0 is same as SIZE = 0
-- returns STD_LOGIC_VECTOR(SIZE-1 downto 0)
function EXT(ARG: STD_LOGIC_VECTOR; SIZE: INTEGER) return STD_LOGIC_VECTOR;
-- sign extend STD_LOGIC_VECTOR (ARG) to SIZE,
-- SIZE < 0 is same as SIZE = 0
-- return STD_LOGIC_VECTOR(SIZE-1 downto 0)
function SXT(ARG: STD_LOGIC_VECTOR; SIZE: INTEGER) return STD_LOGIC_VECTOR;
end Std_logic_arith;