1593 lines
62 KiB
VHDL
1593 lines
62 KiB
VHDL
-- --------------------------------------------------------------------
|
|
--
|
|
-- Copyright © 2008 by IEEE.
|
|
--
|
|
-- This source file is an essential part of IEEE Std 1076-2008,
|
|
-- IEEE Standard VHDL Language Reference Manual. Verbatim copies of this
|
|
-- source file may be used and distributed without restriction.
|
|
-- Modifications to this source file as permitted in IEEE Std 1076-2008
|
|
-- may also be made and distributed. All other uses require permission
|
|
-- from the IEEE Standards Department(stds-ipr@ieee.org).
|
|
-- All other rights reserved.
|
|
--
|
|
-- This source file is provided on an AS IS basis. The IEEE disclaims ANY
|
|
-- WARRANTY EXPRESS OR IMPLIED INCLUDING ANY WARRANTY OF MERCHANTABILITY
|
|
-- AND FITNESS FOR USE FOR A PARTICULAR PURPOSE. The user of the source file
|
|
-- shall indemnify and hold IEEE harmless from any damages or liability
|
|
-- arising out of the use thereof.
|
|
--
|
|
-- Title : Standard VHDL Synthesis Packages
|
|
-- : (NUMERIC_BIT package declaration)
|
|
-- :
|
|
-- Library : This package shall be compiled into a library
|
|
-- : symbolically named IEEE.
|
|
-- :
|
|
-- Developers: IEEE DASC Synthesis Working Group,
|
|
-- : Accellera VHDL-TC, and IEEE P1076 Working Group
|
|
-- :
|
|
-- Purpose : This package defines numeric types and arithmetic functions
|
|
-- : for use with synthesis tools. Two numeric types are defined:
|
|
-- : -- > UNSIGNED: represents an UNSIGNED number in vector form
|
|
-- : -- > SIGNED: represents a SIGNED number in vector form
|
|
-- : The base element type is type BIT.
|
|
-- : The leftmost bit is treated as the most significant bit.
|
|
-- : Signed vectors are represented in two's complement form.
|
|
-- : This package contains overloaded arithmetic operators on
|
|
-- : the SIGNED and UNSIGNED types. The package also contains
|
|
-- : useful type conversions functions, clock detection
|
|
-- : functions, and other utility functions.
|
|
-- :
|
|
-- : If any argument to a function is a null array, a null array
|
|
-- : is returned (exceptions, if any, are noted individually).
|
|
--
|
|
-- 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) $
|
|
-- --------------------------------------------------------------------
|
|
|
|
use STD.TEXTIO.all;
|
|
|
|
package NUMERIC_BIT is
|
|
constant CopyRightNotice : STRING
|
|
:= "Copyright © 2008 IEEE. All rights reserved.";
|
|
|
|
--============================================================================
|
|
-- Numeric Array Type Definitions
|
|
--============================================================================
|
|
|
|
type UNSIGNED is array (NATURAL range <>) of BIT;
|
|
type SIGNED is array (NATURAL range <>) of BIT;
|
|
|
|
--============================================================================
|
|
-- Arithmetic Operators:
|
|
--============================================================================
|
|
|
|
-- Id: A.1
|
|
function "abs" (ARG : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: Returns the absolute value of a SIGNED vector ARG.
|
|
|
|
-- Id: A.2
|
|
function "-" (ARG : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: Returns the value of the unary minus operation on a
|
|
-- SIGNED vector ARG.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: A.3
|
|
function "+" (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(MAXIMUM(L'LENGTH, R'LENGTH)-1 downto 0)
|
|
-- Result: Adds two UNSIGNED vectors that may be of different lengths.
|
|
|
|
-- Id: A.3R
|
|
function "+"(L : UNSIGNED; R : BIT) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Similar to A.3 where R is a one bit UNSIGNED
|
|
|
|
-- Id: A.3L
|
|
function "+"(L : BIT; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Similar to A.3 where L is a one bit UNSIGNED
|
|
|
|
-- Id: A.4
|
|
function "+" (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(MAXIMUM(L'LENGTH, R'LENGTH)-1 downto 0)
|
|
-- Result: Adds two SIGNED vectors that may be of different lengths.
|
|
|
|
-- Id: A.4R
|
|
function "+"(L : SIGNED; R : BIT) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Similar to A.4 where R is bit 0 of a non-negative.
|
|
|
|
-- Id: A.4L
|
|
function "+"(L : BIT; R : SIGNED) return SIGNED;
|
|
-- Result subtype: UNSIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Similar to A.4 where L is bit 0 of a non-negative.
|
|
|
|
-- Id: A.5
|
|
function "+" (L : UNSIGNED; R : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Adds an UNSIGNED vector, L, with a nonnegative INTEGER, R.
|
|
|
|
-- Id: A.6
|
|
function "+" (L : NATURAL; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Adds a nonnegative INTEGER, L, with an UNSIGNED vector, R.
|
|
|
|
-- Id: A.7
|
|
function "+" (L : INTEGER; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Adds an INTEGER, L(may be positive or negative), to a SIGNED
|
|
-- vector, R.
|
|
|
|
-- Id: A.8
|
|
function "+" (L : SIGNED; R : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Adds a SIGNED vector, L, to an INTEGER, R.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: A.9
|
|
function "-" (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(MAXIMUM(L'LENGTH, R'LENGTH)-1 downto 0)
|
|
-- Result: Subtracts two UNSIGNED vectors that may be of different lengths.
|
|
|
|
-- Id: A.9R
|
|
function "-"(L : UNSIGNED; R : BIT) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Similar to A.9 where R is a one bit UNSIGNED
|
|
|
|
-- Id: A.9L
|
|
function "-"(L : BIT; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Similar to A.9 where L is a one bit UNSIGNED
|
|
|
|
-- Id: A.10
|
|
function "-" (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(MAXIMUM(L'LENGTH, R'LENGTH)-1 downto 0)
|
|
-- Result: Subtracts a SIGNED vector, R, from another SIGNED vector, L,
|
|
-- that may possibly be of different lengths.
|
|
|
|
-- Id: A.10R
|
|
function "-"(L : SIGNED; R : BIT) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Similar to A.10 where R is bit 0 of a non-negative.
|
|
|
|
-- Id: A.10L
|
|
function "-"(L : BIT; R : SIGNED) return SIGNED;
|
|
-- Result subtype: UNSIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Similar to A.10 where R is bit 0 of a non-negative.
|
|
|
|
-- Id: A.11
|
|
function "-" (L : UNSIGNED; R : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Subtracts a nonnegative INTEGER, R, from an UNSIGNED vector, L.
|
|
|
|
-- Id: A.12
|
|
function "-" (L : NATURAL; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Subtracts an UNSIGNED vector, R, from a nonnegative INTEGER, L.
|
|
|
|
-- Id: A.13
|
|
function "-" (L : SIGNED; R : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Subtracts an INTEGER, R, from a SIGNED vector, L.
|
|
|
|
-- Id: A.14
|
|
function "-" (L : INTEGER; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Subtracts a SIGNED vector, R, from an INTEGER, L.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: A.15
|
|
function "*" (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED((L'LENGTH+R'LENGTH-1) downto 0)
|
|
-- Result: Performs the multiplication operation on two UNSIGNED vectors
|
|
-- that may possibly be of different lengths.
|
|
|
|
-- Id: A.16
|
|
function "*" (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED((L'LENGTH+R'LENGTH-1) downto 0)
|
|
-- Result: Multiplies two SIGNED vectors that may possibly be of
|
|
-- different lengths.
|
|
|
|
-- Id: A.17
|
|
function "*" (L : UNSIGNED; R : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED((L'LENGTH+L'LENGTH-1) downto 0)
|
|
-- Result: Multiplies an UNSIGNED vector, L, with a nonnegative
|
|
-- INTEGER, R. R is converted to an UNSIGNED vector of
|
|
-- size L'LENGTH before multiplication.
|
|
|
|
-- Id: A.18
|
|
function "*" (L : NATURAL; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED((R'LENGTH+R'LENGTH-1) downto 0)
|
|
-- Result: Multiplies an UNSIGNED vector, R, with a nonnegative
|
|
-- INTEGER, L. L is converted to an UNSIGNED vector of
|
|
-- size R'LENGTH before multiplication.
|
|
|
|
-- Id: A.19
|
|
function "*" (L : SIGNED; R : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED((L'LENGTH+L'LENGTH-1) downto 0)
|
|
-- Result: Multiplies a SIGNED vector, L, with an INTEGER, R. R is
|
|
-- converted to a SIGNED vector of size L'LENGTH before
|
|
-- multiplication.
|
|
|
|
-- Id: A.20
|
|
function "*" (L : INTEGER; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED((R'LENGTH+R'LENGTH-1) downto 0)
|
|
-- Result: Multiplies a SIGNED vector, R, with an INTEGER, L. L is
|
|
-- converted to a SIGNED vector of size R'LENGTH before
|
|
-- multiplication.
|
|
|
|
--============================================================================
|
|
--
|
|
-- NOTE: If second argument is zero for "/" operator, a severity level
|
|
-- of ERROR is issued.
|
|
|
|
-- Id: A.21
|
|
function "/" (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Divides an UNSIGNED vector, L, by another UNSIGNED vector, R.
|
|
|
|
-- Id: A.22
|
|
function "/" (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Divides an SIGNED vector, L, by another SIGNED vector, R.
|
|
|
|
-- Id: A.23
|
|
function "/" (L : UNSIGNED; R : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Divides an UNSIGNED vector, L, by a nonnegative INTEGER, R.
|
|
-- If NO_OF_BITS(R) > L'LENGTH, result is truncated to L'LENGTH.
|
|
|
|
-- Id: A.24
|
|
function "/" (L : NATURAL; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Divides a nonnegative INTEGER, L, by an UNSIGNED vector, R.
|
|
-- If NO_OF_BITS(L) > R'LENGTH, result is truncated to R'LENGTH.
|
|
|
|
-- Id: A.25
|
|
function "/" (L : SIGNED; R : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Divides a SIGNED vector, L, by an INTEGER, R.
|
|
-- If NO_OF_BITS(R) > L'LENGTH, result is truncated to L'LENGTH.
|
|
|
|
-- Id: A.26
|
|
function "/" (L : INTEGER; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Divides an INTEGER, L, by a SIGNED vector, R.
|
|
-- If NO_OF_BITS(L) > R'LENGTH, result is truncated to R'LENGTH.
|
|
|
|
--============================================================================
|
|
--
|
|
-- NOTE: If second argument is zero for "rem" operator, a severity level
|
|
-- of ERROR is issued.
|
|
|
|
-- Id: A.27
|
|
function "rem" (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Computes "L rem R" where L and R are UNSIGNED vectors.
|
|
|
|
-- Id: A.28
|
|
function "rem" (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Computes "L rem R" where L and R are SIGNED vectors.
|
|
|
|
-- Id: A.29
|
|
function "rem" (L : UNSIGNED; R : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Computes "L rem R" where L is an UNSIGNED vector and R is a
|
|
-- nonnegative INTEGER.
|
|
-- If NO_OF_BITS(R) > L'LENGTH, result is truncated to L'LENGTH.
|
|
|
|
-- Id: A.30
|
|
function "rem" (L : NATURAL; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Computes "L rem R" where R is an UNSIGNED vector and L is a
|
|
-- nonnegative INTEGER.
|
|
-- If NO_OF_BITS(L) > R'LENGTH, result is truncated to R'LENGTH.
|
|
|
|
-- Id: A.31
|
|
function "rem" (L : SIGNED; R : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Computes "L rem R" where L is SIGNED vector and R is an INTEGER.
|
|
-- If NO_OF_BITS(R) > L'LENGTH, result is truncated to L'LENGTH.
|
|
|
|
-- Id: A.32
|
|
function "rem" (L : INTEGER; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Computes "L rem R" where R is SIGNED vector and L is an INTEGER.
|
|
-- If NO_OF_BITS(L) > R'LENGTH, result is truncated to R'LENGTH.
|
|
|
|
--============================================================================
|
|
--
|
|
-- NOTE: If second argument is zero for "mod" operator, a severity level
|
|
-- of ERROR is issued.
|
|
|
|
-- Id: A.33
|
|
function "mod" (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Computes "L mod R" where L and R are UNSIGNED vectors.
|
|
|
|
-- Id: A.34
|
|
function "mod" (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Computes "L mod R" where L and R are SIGNED vectors.
|
|
|
|
-- Id: A.35
|
|
function "mod" (L : UNSIGNED; R : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Computes "L mod R" where L is an UNSIGNED vector and R
|
|
-- is a nonnegative INTEGER.
|
|
-- If NO_OF_BITS(R) > L'LENGTH, result is truncated to L'LENGTH.
|
|
|
|
-- Id: A.36
|
|
function "mod" (L : NATURAL; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Computes "L mod R" where R is an UNSIGNED vector and L
|
|
-- is a nonnegative INTEGER.
|
|
-- If NO_OF_BITS(L) > R'LENGTH, result is truncated to R'LENGTH.
|
|
|
|
-- Id: A.37
|
|
function "mod" (L : SIGNED; R : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Computes "L mod R" where L is a SIGNED vector and
|
|
-- R is an INTEGER.
|
|
-- If NO_OF_BITS(R) > L'LENGTH, result is truncated to L'LENGTH.
|
|
|
|
-- Id: A.38
|
|
function "mod" (L : INTEGER; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Computes "L mod R" where L is an INTEGER and
|
|
-- R is a SIGNED vector.
|
|
-- If NO_OF_BITS(L) > R'LENGTH, result is truncated to R'LENGTH.
|
|
|
|
--============================================================================
|
|
-- Id: A.39
|
|
function find_leftmost (ARG : UNSIGNED; Y : BIT) return INTEGER;
|
|
-- Result subtype: INTEGER
|
|
-- Result: Finds the leftmost occurrence of the value of Y in ARG.
|
|
-- Returns the index of the occurrence if it exists, or -1 otherwise.
|
|
|
|
-- Id: A.40
|
|
function find_leftmost (ARG : SIGNED; Y : BIT) return INTEGER;
|
|
-- Result subtype: INTEGER
|
|
-- Result: Finds the leftmost occurrence of the value of Y in ARG.
|
|
-- Returns the index of the occurrence if it exists, or -1 otherwise.
|
|
|
|
-- Id: A.41
|
|
function find_rightmost (ARG : UNSIGNED; Y : BIT) return INTEGER;
|
|
-- Result subtype: INTEGER
|
|
-- Result: Finds the leftmost occurrence of the value of Y in ARG.
|
|
-- Returns the index of the occurrence if it exists, or -1 otherwise.
|
|
|
|
-- Id: A.42
|
|
function find_rightmost (ARG : SIGNED; Y : BIT) return INTEGER;
|
|
-- Result subtype: INTEGER
|
|
-- Result: Finds the leftmost occurrence of the value of Y in ARG.
|
|
-- Returns the index of the occurrence if it exists, or -1 otherwise.
|
|
|
|
--============================================================================
|
|
-- Comparison Operators
|
|
--============================================================================
|
|
|
|
-- Id: C.1
|
|
function ">" (L, R : UNSIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L > R" where L and R are UNSIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.2
|
|
function ">" (L, R : SIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L > R" where L and R are SIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.3
|
|
function ">" (L : NATURAL; R : UNSIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L > R" where L is a nonnegative INTEGER and
|
|
-- R is an UNSIGNED vector.
|
|
|
|
-- Id: C.4
|
|
function ">" (L : INTEGER; R : SIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L > R" where L is a INTEGER and
|
|
-- R is a SIGNED vector.
|
|
|
|
-- Id: C.5
|
|
function ">" (L : UNSIGNED; R : NATURAL) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L > R" where L is an UNSIGNED vector and
|
|
-- R is a nonnegative INTEGER.
|
|
|
|
-- Id: C.6
|
|
function ">" (L : SIGNED; R : INTEGER) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L > R" where L is a SIGNED vector and
|
|
-- R is a INTEGER.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: C.7
|
|
function "<" (L, R : UNSIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L < R" where L and R are UNSIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.8
|
|
function "<" (L, R : SIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L < R" where L and R are SIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.9
|
|
function "<" (L : NATURAL; R : UNSIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L < R" where L is a nonnegative INTEGER and
|
|
-- R is an UNSIGNED vector.
|
|
|
|
-- Id: C.10
|
|
function "<" (L : INTEGER; R : SIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L < R" where L is an INTEGER and
|
|
-- R is a SIGNED vector.
|
|
|
|
-- Id: C.11
|
|
function "<" (L : UNSIGNED; R : NATURAL) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L < R" where L is an UNSIGNED vector and
|
|
-- R is a nonnegative INTEGER.
|
|
|
|
-- Id: C.12
|
|
function "<" (L : SIGNED; R : INTEGER) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L < R" where L is a SIGNED vector and
|
|
-- R is an INTEGER.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: C.13
|
|
function "<=" (L, R : UNSIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L <= R" where L and R are UNSIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.14
|
|
function "<=" (L, R : SIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L <= R" where L and R are SIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.15
|
|
function "<=" (L : NATURAL; R : UNSIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L <= R" where L is a nonnegative INTEGER and
|
|
-- R is an UNSIGNED vector.
|
|
|
|
-- Id: C.16
|
|
function "<=" (L : INTEGER; R : SIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L <= R" where L is an INTEGER and
|
|
-- R is a SIGNED vector.
|
|
|
|
-- Id: C.17
|
|
function "<=" (L : UNSIGNED; R : NATURAL) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L <= R" where L is an UNSIGNED vector and
|
|
-- R is a nonnegative INTEGER.
|
|
|
|
-- Id: C.18
|
|
function "<=" (L : SIGNED; R : INTEGER) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L <= R" where L is a SIGNED vector and
|
|
-- R is an INTEGER.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: C.19
|
|
function ">=" (L, R : UNSIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L >= R" where L and R are UNSIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.20
|
|
function ">=" (L, R : SIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L >= R" where L and R are SIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.21
|
|
function ">=" (L : NATURAL; R : UNSIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L >= R" where L is a nonnegative INTEGER and
|
|
-- R is an UNSIGNED vector.
|
|
|
|
-- Id: C.22
|
|
function ">=" (L : INTEGER; R : SIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L >= R" where L is an INTEGER and
|
|
-- R is a SIGNED vector.
|
|
|
|
-- Id: C.23
|
|
function ">=" (L : UNSIGNED; R : NATURAL) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L >= R" where L is an UNSIGNED vector and
|
|
-- R is a nonnegative INTEGER.
|
|
|
|
-- Id: C.24
|
|
function ">=" (L : SIGNED; R : INTEGER) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L >= R" where L is a SIGNED vector and
|
|
-- R is an INTEGER.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: C.25
|
|
function "=" (L, R : UNSIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L = R" where L and R are UNSIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.26
|
|
function "=" (L, R : SIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L = R" where L and R are SIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.27
|
|
function "=" (L : NATURAL; R : UNSIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L = R" where L is a nonnegative INTEGER and
|
|
-- R is an UNSIGNED vector.
|
|
|
|
-- Id: C.28
|
|
function "=" (L : INTEGER; R : SIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L = R" where L is an INTEGER and
|
|
-- R is a SIGNED vector.
|
|
|
|
-- Id: C.29
|
|
function "=" (L : UNSIGNED; R : NATURAL) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L = R" where L is an UNSIGNED vector and
|
|
-- R is a nonnegative INTEGER.
|
|
|
|
-- Id: C.30
|
|
function "=" (L : SIGNED; R : INTEGER) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L = R" where L is a SIGNED vector and
|
|
-- R is an INTEGER.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: C.31
|
|
function "/=" (L, R : UNSIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L /= R" where L and R are UNSIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.32
|
|
function "/=" (L, R : SIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L /= R" where L and R are SIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.33
|
|
function "/=" (L : NATURAL; R : UNSIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L /= R" where L is a nonnegative INTEGER and
|
|
-- R is an UNSIGNED vector.
|
|
|
|
-- Id: C.34
|
|
function "/=" (L : INTEGER; R : SIGNED) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L /= R" where L is an INTEGER and
|
|
-- R is a SIGNED vector.
|
|
|
|
-- Id: C.35
|
|
function "/=" (L : UNSIGNED; R : NATURAL) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L /= R" where L is an UNSIGNED vector and
|
|
-- R is a nonnegative INTEGER.
|
|
|
|
-- Id: C.36
|
|
function "/=" (L : SIGNED; R : INTEGER) return BOOLEAN;
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Computes "L /= R" where L is a SIGNED vector and
|
|
-- R is an INTEGER.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: C.37
|
|
function MINIMUM (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED
|
|
-- Result: Returns the lesser of two UNSIGNED vectors that may be
|
|
-- of different lengths.
|
|
|
|
-- Id: C.38
|
|
function MINIMUM (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED
|
|
-- Result: Returns the lesser of two SIGNED vectors that may be
|
|
-- of different lengths.
|
|
|
|
-- Id: C.39
|
|
function MINIMUM (L : NATURAL; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED
|
|
-- Result: Returns the lesser of a nonnegative INTEGER, L, and
|
|
-- an UNSIGNED vector, R.
|
|
|
|
-- Id: C.40
|
|
function MINIMUM (L : INTEGER; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED
|
|
-- Result: Returns the lesser of an INTEGER, L, and a SIGNED
|
|
-- vector, R.
|
|
|
|
-- Id: C.41
|
|
function MINIMUM (L : UNSIGNED; R : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED
|
|
-- Result: Returns the lesser of an UNSIGNED vector, L, and
|
|
-- a nonnegative INTEGER, R.
|
|
|
|
-- Id: C.42
|
|
function MINIMUM (L : SIGNED; R : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED
|
|
-- Result: Returns the lesser of a SIGNED vector, L, and
|
|
-- an INTEGER, R.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: C.43
|
|
function MAXIMUM (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED
|
|
-- Result: Returns the greater of two UNSIGNED vectors that may be
|
|
-- of different lengths.
|
|
|
|
-- Id: C.44
|
|
function MAXIMUM (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED
|
|
-- Result: Returns the greater of two SIGNED vectors that may be
|
|
-- of different lengths.
|
|
|
|
-- Id: C.45
|
|
function MAXIMUM (L : NATURAL; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED
|
|
-- Result: Returns the greater of a nonnegative INTEGER, L, and
|
|
-- an UNSIGNED vector, R.
|
|
|
|
-- Id: C.46
|
|
function MAXIMUM (L : INTEGER; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED
|
|
-- Result: Returns the greater of an INTEGER, L, and a SIGNED
|
|
-- vector, R.
|
|
|
|
-- Id: C.47
|
|
function MAXIMUM (L : UNSIGNED; R : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED
|
|
-- Result: Returns the greater of an UNSIGNED vector, L, and
|
|
-- a nonnegative INTEGER, R.
|
|
|
|
-- Id: C.48
|
|
function MAXIMUM (L : SIGNED; R : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED
|
|
-- Result: Returns the greater of a SIGNED vector, L, and
|
|
-- an INTEGER, R.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: C.49
|
|
function "?>" (L, R : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L > R" where L and R are UNSIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.50
|
|
function "?>" (L, R : SIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L > R" where L and R are SIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.51
|
|
function "?>" (L : NATURAL; R : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L > R" where L is a nonnegative INTEGER and
|
|
-- R is an UNSIGNED vector.
|
|
|
|
-- Id: C.52
|
|
function "?>" (L : INTEGER; R : SIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L > R" where L is a INTEGER and
|
|
-- R is a SIGNED vector.
|
|
|
|
-- Id: C.53
|
|
function "?>" (L : UNSIGNED; R : NATURAL) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L > R" where L is an UNSIGNED vector and
|
|
-- R is a nonnegative INTEGER.
|
|
|
|
-- Id: C.54
|
|
function "?>" (L : SIGNED; R : INTEGER) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L > R" where L is a SIGNED vector and
|
|
-- R is a INTEGER.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: C.55
|
|
function "?<" (L, R : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L < R" where L and R are UNSIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.56
|
|
function "?<" (L, R : SIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L < R" where L and R are SIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.57
|
|
function "?<" (L : NATURAL; R : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L < R" where L is a nonnegative INTEGER and
|
|
-- R is an UNSIGNED vector.
|
|
|
|
-- Id: C.58
|
|
function "?<" (L : INTEGER; R : SIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L < R" where L is an INTEGER and
|
|
-- R is a SIGNED vector.
|
|
|
|
-- Id: C.59
|
|
function "?<" (L : UNSIGNED; R : NATURAL) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L < R" where L is an UNSIGNED vector and
|
|
-- R is a nonnegative INTEGER.
|
|
|
|
-- Id: C.60
|
|
function "?<" (L : SIGNED; R : INTEGER) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L < R" where L is a SIGNED vector and
|
|
-- R is an INTEGER.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: C.61
|
|
function "?<=" (L, R : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L <= R" where L and R are UNSIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.62
|
|
function "?<=" (L, R : SIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L <= R" where L and R are SIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.63
|
|
function "?<=" (L : NATURAL; R : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L <= R" where L is a nonnegative INTEGER and
|
|
-- R is an UNSIGNED vector.
|
|
|
|
-- Id: C.64
|
|
function "?<=" (L : INTEGER; R : SIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L <= R" where L is an INTEGER and
|
|
-- R is a SIGNED vector.
|
|
|
|
-- Id: C.65
|
|
function "?<=" (L : UNSIGNED; R : NATURAL) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L <= R" where L is an UNSIGNED vector and
|
|
-- R is a nonnegative INTEGER.
|
|
|
|
-- Id: C.66
|
|
function "?<=" (L : SIGNED; R : INTEGER) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L <= R" where L is a SIGNED vector and
|
|
-- R is an INTEGER.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: C.67
|
|
function "?>=" (L, R : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L >= R" where L and R are UNSIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.68
|
|
function "?>=" (L, R : SIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L >= R" where L and R are SIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.69
|
|
function "?>=" (L : NATURAL; R : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L >= R" where L is a nonnegative INTEGER and
|
|
-- R is an UNSIGNED vector.
|
|
|
|
-- Id: C.70
|
|
function "?>=" (L : INTEGER; R : SIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L >= R" where L is an INTEGER and
|
|
-- R is a SIGNED vector.
|
|
|
|
-- Id: C.71
|
|
function "?>=" (L : UNSIGNED; R : NATURAL) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L >= R" where L is an UNSIGNED vector and
|
|
-- R is a nonnegative INTEGER.
|
|
|
|
-- Id: C.72
|
|
function "?>=" (L : SIGNED; R : INTEGER) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L >= R" where L is a SIGNED vector and
|
|
-- R is an INTEGER.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: C.73
|
|
function "?=" (L, R : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L = R" where L and R are UNSIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.74
|
|
function "?=" (L, R : SIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L = R" where L and R are SIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.75
|
|
function "?=" (L : NATURAL; R : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L = R" where L is a nonnegative INTEGER and
|
|
-- R is an UNSIGNED vector.
|
|
|
|
-- Id: C.76
|
|
function "?=" (L : INTEGER; R : SIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L = R" where L is an INTEGER and
|
|
-- R is an SIGNED vector.
|
|
|
|
-- Id: C.77
|
|
function "?=" (L : UNSIGNED; R : NATURAL) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L = R" where L is an UNSIGNED vector and
|
|
-- R is a nonnegative INTEGER.
|
|
|
|
-- Id: C.78
|
|
function "?=" (L : SIGNED; R : INTEGER) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L = R" where L is an SIGNED vector and
|
|
-- R is an INTEGER.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: C.79
|
|
function "?/=" (L, R : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L /= R" where L and R are UNSIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.80
|
|
function "?/=" (L, R : SIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L /= R" where L and R are SIGNED vectors possibly
|
|
-- of different lengths.
|
|
|
|
-- Id: C.81
|
|
function "?/=" (L : NATURAL; R : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L /= R" where L is a nonnegative INTEGER and
|
|
-- R is an UNSIGNED vector.
|
|
|
|
-- Id: C.82
|
|
function "?/=" (L : INTEGER; R : SIGNED) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L /= R" where L is an INTEGER and
|
|
-- R is an SIGNED vector.
|
|
|
|
-- Id: C.83
|
|
function "?/=" (L : UNSIGNED; R : NATURAL) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L /= R" where L is an UNSIGNED vector and
|
|
-- R is a nonnegative INTEGER.
|
|
|
|
-- Id: C.84
|
|
function "?/=" (L : SIGNED; R : INTEGER) return BIT;
|
|
-- Result subtype: BIT
|
|
-- Result: Computes "L /= R" where L is an SIGNED vector and
|
|
-- R is an INTEGER.
|
|
|
|
--============================================================================
|
|
-- Shift and Rotate Functions
|
|
--============================================================================
|
|
|
|
-- Id: S.1
|
|
function SHIFT_LEFT (ARG : UNSIGNED; COUNT : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: Performs a shift-left on an UNSIGNED vector COUNT times.
|
|
-- The vacated positions are filled with Bit '0'.
|
|
-- The COUNT leftmost bits are lost.
|
|
|
|
-- Id: S.2
|
|
function SHIFT_RIGHT (ARG : UNSIGNED; COUNT : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: Performs a shift-right on an UNSIGNED vector COUNT times.
|
|
-- The vacated positions are filled with Bit '0'.
|
|
-- The COUNT rightmost bits are lost.
|
|
|
|
-- Id: S.3
|
|
function SHIFT_LEFT (ARG : SIGNED; COUNT : NATURAL) return SIGNED;
|
|
-- Result subtype: SIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: Performs a shift-left on a SIGNED vector COUNT times.
|
|
-- The vacated positions are filled with Bit '0'.
|
|
-- The COUNT leftmost bits are lost.
|
|
|
|
-- Id: S.4
|
|
function SHIFT_RIGHT (ARG : SIGNED; COUNT : NATURAL) return SIGNED;
|
|
-- Result subtype: SIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: Performs a shift-right on a SIGNED vector COUNT times.
|
|
-- The vacated positions are filled with the leftmost bit, ARG'LEFT.
|
|
-- The COUNT rightmost bits are lost.
|
|
|
|
--============================================================================
|
|
|
|
-- Id: S.5
|
|
function ROTATE_LEFT (ARG : UNSIGNED; COUNT : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: Performs a rotate-left of an UNSIGNED vector COUNT times.
|
|
|
|
-- Id: S.6
|
|
function ROTATE_RIGHT (ARG : UNSIGNED; COUNT : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: Performs a rotate-right of an UNSIGNED vector COUNT times.
|
|
|
|
-- Id: S.7
|
|
function ROTATE_LEFT (ARG : SIGNED; COUNT : NATURAL) return SIGNED;
|
|
-- Result subtype: SIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: Performs a logical rotate-left of a SIGNED vector COUNT times.
|
|
|
|
-- Id: S.8
|
|
function ROTATE_RIGHT (ARG : SIGNED; COUNT : NATURAL) return SIGNED;
|
|
-- Result subtype: SIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: Performs a logical rotate-right of a SIGNED vector COUNT times.
|
|
|
|
--============================================================================
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function S.9 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: S.9
|
|
function "sll" (ARG : UNSIGNED; COUNT : INTEGER) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: SHIFT_LEFT(ARG, COUNT)
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function S.10 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: S.10
|
|
function "sll" (ARG : SIGNED; COUNT : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: SHIFT_LEFT(ARG, COUNT)
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function S.11 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: S.11
|
|
function "srl" (ARG : UNSIGNED; COUNT : INTEGER) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: SHIFT_RIGHT(ARG, COUNT)
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function S.12 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: S.12
|
|
function "srl" (ARG : SIGNED; COUNT : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: SIGNED(SHIFT_RIGHT(UNSIGNED(ARG), COUNT))
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function S.13 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: S.13
|
|
function "rol" (ARG : UNSIGNED; COUNT : INTEGER) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: ROTATE_LEFT(ARG, COUNT)
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function S.14 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: S.14
|
|
function "rol" (ARG : SIGNED; COUNT : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: ROTATE_LEFT(ARG, COUNT)
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function S.15 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: S.15
|
|
function "ror" (ARG : UNSIGNED; COUNT : INTEGER) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: ROTATE_RIGHT(ARG, COUNT)
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function S.16 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: S.16
|
|
function "ror" (ARG : SIGNED; COUNT : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: ROTATE_RIGHT(ARG, COUNT)
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function S.17 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: S.17
|
|
function "sla" (ARG : UNSIGNED; COUNT : INTEGER) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: SHIFT_LEFT(ARG, COUNT)
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function S.18 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: S.18
|
|
function "sla" (ARG : SIGNED; COUNT : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: SHIFT_LEFT(ARG, COUNT)
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function S.19 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: S.19
|
|
function "sra" (ARG : UNSIGNED; COUNT : INTEGER) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: SHIFT_RIGHT(ARG, COUNT)
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function S.20 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: S.20
|
|
function "sra" (ARG : SIGNED; COUNT : INTEGER) return SIGNED;
|
|
-- Result subtype: SIGNED(ARG'LENGTH-1 downto 0)
|
|
-- Result: SHIFT_RIGHT(ARG, COUNT)
|
|
|
|
--============================================================================
|
|
-- RESIZE Functions
|
|
--============================================================================
|
|
|
|
-- Id: R.1
|
|
function RESIZE (ARG : SIGNED; NEW_SIZE : NATURAL) return SIGNED;
|
|
-- Result subtype: SIGNED(NEW_SIZE-1 downto 0)
|
|
-- Result: Resizes the SIGNED vector ARG to the specified size.
|
|
-- To create a larger vector, the new [leftmost] bit positions
|
|
-- are filled with the sign bit (ARG'LEFT). When truncating,
|
|
-- the sign bit is retained along with the rightmost part.
|
|
|
|
-- Id: R.2
|
|
function RESIZE (ARG : UNSIGNED; NEW_SIZE : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(NEW_SIZE-1 downto 0)
|
|
-- Result: Resizes the UNSIGNED vector ARG to the specified size.
|
|
-- To create a larger vector, the new [leftmost] bit positions
|
|
-- are filled with '0'. When truncating, the leftmost bits
|
|
-- are dropped.
|
|
|
|
function RESIZE (ARG, SIZE_RES : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNRESOLVED_UNSIGNED (SIZE_RES'length-1 downto 0)
|
|
|
|
function RESIZE (ARG, SIZE_RES : SIGNED) return SIGNED;
|
|
-- Result subtype: UNRESOLVED_SIGNED (SIZE_RES'length-1 downto 0)
|
|
|
|
--============================================================================
|
|
-- Conversion Functions
|
|
--============================================================================
|
|
|
|
-- Id: D.1
|
|
function TO_INTEGER (ARG : UNSIGNED) return NATURAL;
|
|
-- Result subtype: NATURAL. Value cannot be negative since parameter is an
|
|
-- UNSIGNED vector.
|
|
-- Result: Converts the UNSIGNED vector to an INTEGER.
|
|
|
|
-- Id: D.2
|
|
function TO_INTEGER (ARG : SIGNED) return INTEGER;
|
|
-- Result subtype: INTEGER
|
|
-- Result: Converts a SIGNED vector to an INTEGER.
|
|
|
|
-- Id: D.3
|
|
function TO_UNSIGNED (ARG, SIZE : NATURAL) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(SIZE-1 downto 0)
|
|
-- Result: Converts a nonnegative INTEGER to an UNSIGNED vector with
|
|
-- the specified size.
|
|
|
|
-- Id: D.4
|
|
function TO_SIGNED (ARG : INTEGER; SIZE : NATURAL) return SIGNED;
|
|
-- Result subtype: SIGNED(SIZE-1 downto 0)
|
|
-- Result: Converts an INTEGER to a SIGNED vector of the specified size.
|
|
|
|
function TO_UNSIGNED (ARG : NATURAL; SIZE_RES : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNRESOLVED_UNSIGNED(SIZE_RES'length-1 downto 0)
|
|
|
|
function TO_SIGNED (ARG : INTEGER; SIZE_RES : SIGNED) return SIGNED;
|
|
-- Result subtype: UNRESOLVED_SIGNED(SIZE_RES'length-1 downto 0)
|
|
|
|
--============================================================================
|
|
-- Logical Operators
|
|
--============================================================================
|
|
|
|
-- Id: L.1
|
|
function "not" (L : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Termwise inversion
|
|
|
|
-- Id: L.2
|
|
function "and" (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector AND operation
|
|
|
|
-- Id: L.3
|
|
function "or" (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector OR operation
|
|
|
|
-- Id: L.4
|
|
function "nand" (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector NAND operation
|
|
|
|
-- Id: L.5
|
|
function "nor" (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector NOR operation
|
|
|
|
-- Id: L.6
|
|
function "xor" (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector XOR operation
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.7 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.7
|
|
function "xnor" (L, R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: UNSIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector XNOR operation
|
|
|
|
-- Id: L.8
|
|
function "not" (L : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Termwise inversion
|
|
|
|
-- Id: L.9
|
|
function "and" (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector AND operation
|
|
|
|
-- Id: L.10
|
|
function "or" (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector OR operation
|
|
|
|
-- Id: L.11
|
|
function "nand" (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector NAND operation
|
|
|
|
-- Id: L.12
|
|
function "nor" (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector NOR operation
|
|
|
|
-- Id: L.13
|
|
function "xor" (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector XOR operation
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.14 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.14
|
|
function "xnor" (L, R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector XNOR operation
|
|
|
|
-- Id: L.15
|
|
function "and" (L : BIT; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Scalar/Vector AND operation
|
|
|
|
-- Id: L.16
|
|
function "and" (L : UNSIGNED; R : BIT) return UNSIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector/Scalar AND operation
|
|
|
|
-- Id: L.17
|
|
function "or" (L : BIT; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Scalar/Vector OR operation
|
|
|
|
-- Id: L.18
|
|
function "or" (L : UNSIGNED; R : BIT) return UNSIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector/Scalar OR operation
|
|
|
|
-- Id: L.19
|
|
function "nand" (L : BIT; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Scalar/Vector NAND operation
|
|
|
|
-- Id: L.20
|
|
function "nand" (L : UNSIGNED; R : BIT) return UNSIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector/Scalar NAND operation
|
|
|
|
-- Id: L.21
|
|
function "nor" (L : BIT; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Scalar/Vector NOR operation
|
|
|
|
-- Id: L.22
|
|
function "nor" (L : UNSIGNED; R : BIT) return UNSIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector/Scalar NOR operation
|
|
|
|
-- Id: L.23
|
|
function "xor" (L : BIT; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Scalar/Vector XOR operation
|
|
|
|
-- Id: L.24
|
|
function "xor" (L : UNSIGNED; R : BIT) return UNSIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector/Scalar XOR operation
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.25 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.25
|
|
function "xnor" (L : BIT; R : UNSIGNED) return UNSIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Scalar/Vector XNOR operation
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.26 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.26
|
|
function "xnor" (L : UNSIGNED; R : BIT) return UNSIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector/Scalar XNOR operation
|
|
|
|
-- Id: L.27
|
|
function "and" (L : BIT; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Scalar/Vector AND operation
|
|
|
|
-- Id: L.28
|
|
function "and" (L : SIGNED; R : BIT) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector/Scalar AND operation
|
|
|
|
-- Id: L.29
|
|
function "or" (L : BIT; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Scalar/Vector OR operation
|
|
|
|
-- Id: L.30
|
|
function "or" (L : SIGNED; R : BIT) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector/Scalar OR operation
|
|
|
|
-- Id: L.31
|
|
function "nand" (L : BIT; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Scalar/Vector NAND operation
|
|
|
|
-- Id: L.32
|
|
function "nand" (L : SIGNED; R : BIT) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector/Scalar NAND operation
|
|
|
|
-- Id: L.33
|
|
function "nor" (L : BIT; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Scalar/Vector NOR operation
|
|
|
|
-- Id: L.34
|
|
function "nor" (L : SIGNED; R : BIT) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector/Scalar NOR operation
|
|
|
|
-- Id: L.35
|
|
function "xor" (L : BIT; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Scalar/Vector XOR operation
|
|
|
|
-- Id: L.36
|
|
function "xor" (L : SIGNED; R : BIT) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector/Scalar XOR operation
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.37 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.37
|
|
function "xnor" (L : BIT; R : SIGNED) return SIGNED;
|
|
-- Result subtype: SIGNED(R'LENGTH-1 downto 0)
|
|
-- Result: Scalar/Vector XNOR operation
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.38 is not compatible with IEEE Std 1076-1987. Comment
|
|
-- out the function (declaration and body) for IEEE Std 1076-1987 compatibility.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.38
|
|
function "xnor" (L : SIGNED; R : BIT) return SIGNED;
|
|
-- Result subtype: SIGNED(L'LENGTH-1 downto 0)
|
|
-- Result: Vector/Scalar XNOR operation
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.39 is not compatible with editions of IEEE Std 1076 from
|
|
-- 1987 through 2002. Comment out the function (declaration and body) for
|
|
-- compatibility with these editions.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.39
|
|
function "and" (L : SIGNED) return BIT;
|
|
-- Result subtype: BIT.
|
|
-- Result: Result of and'ing all of the bits of the vector.
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.40 is not compatible with editions of IEEE Std 1076 from
|
|
-- 1987 through 2002. Comment out the function (declaration and body) for
|
|
-- compatibility with these editions.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.40
|
|
function "nand" (L : SIGNED) return BIT;
|
|
-- Result subtype: BIT.
|
|
-- Result: Result of nand'ing all of the bits of the vector.
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.41 is not compatible with editions of IEEE Std 1076 from
|
|
-- 1987 through 2002. Comment out the function (declaration and body) for
|
|
-- compatibility with these editions.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.41
|
|
function "or" (L : SIGNED) return BIT;
|
|
-- Result subtype: BIT.
|
|
-- Result: Result of or'ing all of the bits of the vector.
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.42 is not compatible with editions of IEEE Std 1076 from
|
|
-- 1987 through 2002. Comment out the function (declaration and body) for
|
|
-- compatibility with these editions.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.42
|
|
function "nor" (L : SIGNED) return BIT;
|
|
-- Result subtype: BIT.
|
|
-- Result: Result of nor'ing all of the bits of the vector.
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.43 is not compatible with editions of IEEE Std 1076 from
|
|
-- 1987 through 2002. Comment out the function (declaration and body) for
|
|
-- compatibility with these editions.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.43
|
|
function "xor" (L : SIGNED) return BIT;
|
|
-- Result subtype: BIT.
|
|
-- Result: Result of xor'ing all of the bits of the vector.
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.44 is not compatible with editions of IEEE Std 1076 from
|
|
-- 1987 through 2002. Comment out the function (declaration and body) for
|
|
-- compatibility with these editions.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.44
|
|
function "xnor" (L : SIGNED) return BIT;
|
|
-- Result subtype: BIT.
|
|
-- Result: Result of xnor'ing all of the bits of the vector.
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.45 is not compatible with editions of IEEE Std 1076 from
|
|
-- 1987 through 2002. Comment out the function (declaration and body) for
|
|
-- compatibility with these editions.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.45
|
|
function "and" (L : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT.
|
|
-- Result: Result of and'ing all of the bits of the vector.
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.46 is not compatible with editions of IEEE Std 1076 from
|
|
-- 1987 through 2002. Comment out the function (declaration and body) for
|
|
-- compatibility with these editions.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.46
|
|
function "nand" (L : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT.
|
|
-- Result: Result of nand'ing all of the bits of the vector.
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.47 is not compatible with editions of IEEE Std 1076 from
|
|
-- 1987 through 2002. Comment out the function (declaration and body) for
|
|
-- compatibility with these editions.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.47
|
|
function "or" (L : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT.
|
|
-- Result: Result of or'ing all of the bits of the vector.
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.48 is not compatible with editions of IEEE Std 1076 from
|
|
-- 1987 through 2002. Comment out the function (declaration and body) for
|
|
-- compatibility with these editions.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.48
|
|
function "nor" (L : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT.
|
|
-- Result: Result of nor'ing all of the bits of the vector.
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.49 is not compatible with editions of IEEE Std 1076 from
|
|
-- 1987 through 2002. Comment out the function (declaration and body) for
|
|
-- compatibility with these editions.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.49
|
|
function "xor" (L : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT.
|
|
-- Result: Result of xor'ing all of the bits of the vector.
|
|
|
|
------------------------------------------------------------------------------
|
|
-- Note: Function L.50 is not compatible with editions of IEEE Std 1076 from
|
|
-- 1987 through 2002. Comment out the function (declaration and body) for
|
|
-- compatibility with these editions.
|
|
------------------------------------------------------------------------------
|
|
-- Id: L.50
|
|
function "xnor" (L : UNSIGNED) return BIT;
|
|
-- Result subtype: BIT.
|
|
-- Result: Result of xnor'ing all of the bits of the vector.
|
|
|
|
--============================================================================
|
|
-- Edge Detection Functions
|
|
--============================================================================
|
|
|
|
-- Id: E.1
|
|
alias RISING_EDGE is STD.STANDARD.RISING_EDGE
|
|
[STD.STANDARD.BIT return STD.STANDARD.BOOLEAN];
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Returns TRUE if an event is detected on signal S and the
|
|
-- value changed from a '0' to a '1'.
|
|
|
|
-- Id: E.2
|
|
alias FALLING_EDGE is STD.STANDARD.FALLING_EDGE
|
|
[STD.STANDARD.BIT return STD.STANDARD.BOOLEAN];
|
|
-- Result subtype: BOOLEAN
|
|
-- Result: Returns TRUE if an event is detected on signal S and the
|
|
-- value changed from a '1' to a '0'.
|
|
|
|
--============================================================================
|
|
-- string conversion and write operations
|
|
--============================================================================
|
|
-- the following operations are predefined
|
|
|
|
-- FUNCTION to_string ( value : UNSIGNED ) RETURN string;
|
|
-- FUNCTION to_string ( value : SIGNED ) RETURN string;
|
|
|
|
-- explicitly defined operations
|
|
|
|
alias to_bstring is to_string [UNSIGNED return STRING];
|
|
alias to_bstring is to_string [SIGNED return STRING];
|
|
alias to_binary_string is to_string [UNSIGNED return STRING];
|
|
alias to_binary_string is to_string [SIGNED return STRING];
|
|
|
|
function to_ostring (value : UNSIGNED) return STRING;
|
|
function to_ostring (value : SIGNED) return STRING;
|
|
alias to_octal_string is to_ostring [UNSIGNED return STRING];
|
|
alias to_octal_string is to_ostring [SIGNED return STRING];
|
|
|
|
function to_hstring (value : UNSIGNED) return STRING;
|
|
function to_hstring (value : SIGNED) return STRING;
|
|
alias to_hex_string is to_hstring [UNSIGNED return STRING];
|
|
alias to_hex_string is to_hstring [SIGNED return STRING];
|
|
|
|
procedure READ(L : inout LINE; VALUE : out UNSIGNED; GOOD : out BOOLEAN);
|
|
|
|
procedure READ(L : inout LINE; VALUE : out UNSIGNED);
|
|
|
|
procedure READ(L : inout LINE; VALUE : out SIGNED; GOOD : out BOOLEAN);
|
|
|
|
procedure READ(L : inout LINE; VALUE : out SIGNED);
|
|
|
|
procedure WRITE (L : inout LINE; VALUE : in UNSIGNED;
|
|
JUSTIFIED : in SIDE := right; FIELD : in WIDTH := 0);
|
|
|
|
procedure WRITE (L : inout LINE; VALUE : in SIGNED;
|
|
JUSTIFIED : in SIDE := right; FIELD : in WIDTH := 0);
|
|
|
|
alias BREAD is READ [LINE, UNSIGNED, BOOLEAN];
|
|
alias BREAD is READ [LINE, SIGNED, BOOLEAN];
|
|
|
|
alias BREAD is READ [LINE, UNSIGNED];
|
|
alias BREAD is READ [LINE, SIGNED];
|
|
|
|
alias BINARY_READ is READ [LINE, UNSIGNED, BOOLEAN];
|
|
alias BINARY_READ is READ [LINE, SIGNED, BOOLEAN];
|
|
|
|
alias BINARY_READ is READ [LINE, UNSIGNED];
|
|
alias BINARY_READ is READ [LINE, SIGNED];
|
|
|
|
procedure OREAD (L : inout LINE; VALUE : out UNSIGNED; GOOD : out BOOLEAN);
|
|
procedure OREAD (L : inout LINE; VALUE : out SIGNED; GOOD : out BOOLEAN);
|
|
|
|
procedure OREAD (L : inout LINE; VALUE : out UNSIGNED);
|
|
procedure OREAD (L : inout LINE; VALUE : out SIGNED);
|
|
|
|
alias OCTAL_READ is OREAD [LINE, UNSIGNED, BOOLEAN];
|
|
alias OCTAL_READ is OREAD [LINE, SIGNED, BOOLEAN];
|
|
|
|
alias OCTAL_READ is OREAD [LINE, UNSIGNED];
|
|
alias OCTAL_READ is OREAD [LINE, SIGNED];
|
|
|
|
procedure HREAD (L : inout LINE; VALUE : out UNSIGNED; GOOD : out BOOLEAN);
|
|
procedure HREAD (L : inout LINE; VALUE : out SIGNED; GOOD : out BOOLEAN);
|
|
|
|
procedure HREAD (L : inout LINE; VALUE : out UNSIGNED);
|
|
procedure HREAD (L : inout LINE; VALUE : out SIGNED);
|
|
|
|
alias HEX_READ is HREAD [LINE, UNSIGNED, BOOLEAN];
|
|
alias HEX_READ is HREAD [LINE, SIGNED, BOOLEAN];
|
|
|
|
alias HEX_READ is HREAD [LINE, UNSIGNED];
|
|
alias HEX_READ is HREAD [LINE, SIGNED];
|
|
|
|
alias BWRITE is WRITE [LINE, UNSIGNED, SIDE, WIDTH];
|
|
alias BWRITE is WRITE [LINE, SIGNED, SIDE, WIDTH];
|
|
|
|
alias BINARY_WRITE is WRITE [LINE, UNSIGNED, SIDE, WIDTH];
|
|
alias BINARY_WRITE is WRITE [LINE, SIGNED, SIDE, WIDTH];
|
|
|
|
procedure OWRITE (L : inout LINE; VALUE : in UNSIGNED;
|
|
JUSTIFIED : in SIDE := right; FIELD : in WIDTH := 0);
|
|
|
|
procedure OWRITE (L : inout LINE; VALUE : in SIGNED;
|
|
JUSTIFIED : in SIDE := right; FIELD : in WIDTH := 0);
|
|
|
|
alias OCTAL_WRITE is OWRITE [LINE, UNSIGNED, SIDE, WIDTH];
|
|
alias OCTAL_WRITE is OWRITE [LINE, SIGNED, SIDE, WIDTH];
|
|
|
|
procedure HWRITE (L : inout LINE; VALUE : in UNSIGNED;
|
|
JUSTIFIED : in SIDE := right; FIELD : in WIDTH := 0);
|
|
|
|
procedure HWRITE (L : inout LINE; VALUE : in SIGNED;
|
|
JUSTIFIED : in SIDE := right; FIELD : in WIDTH := 0);
|
|
|
|
alias HEX_WRITE is HWRITE [LINE, UNSIGNED, SIDE, WIDTH];
|
|
alias HEX_WRITE is HWRITE [LINE, SIGNED, SIDE, WIDTH];
|
|
|
|
end package NUMERIC_BIT;
|