std

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;

转载于:https://www.cnblogs.com/lteacher/archive/2013/04/11/3015503.html

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