jens
e17a1eefb5
git-svn-id: http://moon:8086/svn/vhdl/trunk@1073 cc03376c-175c-47c8-b038-4cd826a8556b
84 lines
4.2 KiB
VHDL
84 lines
4.2 KiB
VHDL
--------------------------------------------------------------------------
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-- --
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-- Copyright (c) 1990, 1991, 1992 by Synopsys, Inc. --
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-- All rights reserved. --
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-- --
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-- This source file may be used and distributed without restriction --
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-- provided that this copyright statement is not removed from the file --
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-- and that any derivative work contains this copyright notice. --
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-- --
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-- Package name: STD_LOGIC_SIGNED --
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-- --
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-- --
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-- Date: 09/11/91 KN --
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-- 10/08/92 AMT change std_ulogic to signed std_logic --
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-- 10/28/92 AMT added signed functions, -, ABS --
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-- --
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-- Purpose: --
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-- A set of signed arithemtic, conversion, --
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-- and comparision functions for STD_LOGIC_VECTOR. --
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-- --
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-- Note: Comparision of same length std_logic_vector is defined --
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-- in the LRM. The interpretation is for unsigned vectors --
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-- This package will "overload" that definition. --
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-- --
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--------------------------------------------------------------------------
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library IEEE;
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use IEEE.std_logic_1164.all;
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use IEEE.std_logic_arith.all;
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package STD_LOGIC_SIGNED is
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function "+"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
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function "+"(L: STD_LOGIC_VECTOR; R: INTEGER) return STD_LOGIC_VECTOR;
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function "+"(L: INTEGER; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
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function "+"(L: STD_LOGIC_VECTOR; R: STD_LOGIC) return STD_LOGIC_VECTOR;
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function "+"(L: STD_LOGIC; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
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function "-"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
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function "-"(L: STD_LOGIC_VECTOR; R: INTEGER) return STD_LOGIC_VECTOR;
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function "-"(L: INTEGER; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
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function "-"(L: STD_LOGIC_VECTOR; R: STD_LOGIC) return STD_LOGIC_VECTOR;
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function "-"(L: STD_LOGIC; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
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function "+"(L: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
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function "-"(L: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
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function "ABS"(L: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
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function "*"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
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function "<"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN;
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function "<"(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN;
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function "<"(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN;
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function "<="(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN;
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function "<="(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN;
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function "<="(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN;
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function ">"(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN;
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function ">"(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN;
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function ">"(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN;
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function ">="(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN;
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function ">="(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN;
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function ">="(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN;
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function "="(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN;
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function "="(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN;
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function "="(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN;
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function "/="(L: STD_LOGIC_VECTOR; R: STD_LOGIC_VECTOR) return BOOLEAN;
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function "/="(L: STD_LOGIC_VECTOR; R: INTEGER) return BOOLEAN;
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function "/="(L: INTEGER; R: STD_LOGIC_VECTOR) return BOOLEAN;
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function SHL(ARG:STD_LOGIC_VECTOR;COUNT: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
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function SHR(ARG:STD_LOGIC_VECTOR;COUNT: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
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function CONV_INTEGER(ARG: STD_LOGIC_VECTOR) return INTEGER;
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-- remove this since it is already in std_logic_arith
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-- function CONV_STD_LOGIC_VECTOR(ARG: INTEGER; SIZE: INTEGER) return STD_LOGIC_VECTOR;
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end STD_LOGIC_SIGNED;
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