diff options
Diffstat (limited to 'ieee_proposed/rtl/numeric_std_unsigned_c.vhd')
| -rw-r--r-- | ieee_proposed/rtl/numeric_std_unsigned_c.vhd | 2207 |
1 files changed, 0 insertions, 2207 deletions
diff --git a/ieee_proposed/rtl/numeric_std_unsigned_c.vhd b/ieee_proposed/rtl/numeric_std_unsigned_c.vhd deleted file mode 100644 index 30e65ee..0000000 --- a/ieee_proposed/rtl/numeric_std_unsigned_c.vhd +++ /dev/null @@ -1,2207 +0,0 @@ --- --------------------------------------------------------------------
--- Title : Standard VHDL Synthesis Packages (1076.3, NUMERIC_STD_UNSIGNED)
---
--- This package overloaded the arithmetic operaters for
--- "STD_ULOGIC_VECTOR", and treats this vector like an
--- "UNSIGNED" from "numeric_std".
---
--- This is the updated (proposed) new package to be
--- balloted in January.
---
--- New subprograms are at the end of the package header
--- and the package body. These are to be revised, ID's
--- assigned, and voted into the ballot version.
---
--- Other changes will be noted here.
---
--- Created for VHDL-200X par, David Bishop (dbishop@vhdl.org)
-------------------------------------------------------------------------------
-
-library IEEE;
-use IEEE.STD_LOGIC_1164.all;
-package NUMERIC_STD_UNSIGNED is
-
--- begin LCS-2006-141
- -- Replace all subsequent occurrences of STD_LOGIC_VECTOR
- -- with STD_ULOGIC_ECTOR.
--- end LCS-2006-141
- -- Id: A.3
- function "+" (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(MAXIMUM(L'LENGTH, R'LENGTH)-1 downto 0).
- -- Result: Adds two UNSIGNED vectors that may be of different lengths.
-
- -- Id: A.3R
- function "+"(L : STD_ULOGIC_VECTOR; R : STD_ULOGIC) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(L'LENGTH-1 downto 0)
- -- Result: Similar to A.3 where R is a one bit STD_ULOGIC_VECTOR
-
- -- Id: A.3L
- function "+"(L : STD_ULOGIC; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Similar to A.3 where L is a one bit UNSIGNED
-
- -- Id: A.5
- function "+" (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(L'LENGTH-1 downto 0).
- -- Result: Adds an UNSIGNED vector, L, with a non-negative INTEGER, R.
-
- -- Id: A.6
- function "+" (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(R'LENGTH-1 downto 0).
- -- Result: Adds a non-negative INTEGER, L, with an UNSIGNED vector, R.
-
- --============================================================================
-
- -- Id: A.9
- function "-" (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- 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 : STD_ULOGIC_VECTOR; R : STD_ULOGIC) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(L'LENGTH-1 downto 0)
- -- Result: Similar to A.9 where R is a one bit UNSIGNED
-
- -- Id: A.9L
- function "-"(L : STD_ULOGIC; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Similar to A.9 where L is a one bit UNSIGNED
-
- -- Id: A.11
- function "-" (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(L'LENGTH-1 downto 0).
- -- Result: Subtracts a non-negative INTEGER, R, from an UNSIGNED vector, L.
-
- -- Id: A.12
- function "-" (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(R'LENGTH-1 downto 0).
- -- Result: Subtracts an UNSIGNED vector, R, from a non-negative INTEGER, L.
-
- --============================================================================
-
- -- Id: A.15
- function "*" (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR((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.17
- function "*" (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR((L'LENGTH+L'LENGTH-1) downto 0).
- -- Result: Multiplies an UNSIGNED vector, L, with a non-negative
- -- INTEGER, R. R is converted to an UNSIGNED vector of
- -- SIZE L'LENGTH before multiplication.
-
- -- Id: A.18
- function "*" (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR((R'LENGTH+R'LENGTH-1) downto 0).
- -- Result: Multiplies an UNSIGNED vector, R, with a non-negative
- -- INTEGER, L. L is converted to an UNSIGNED 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 : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(L'LENGTH-1 downto 0)
- -- Result: Divides an UNSIGNED vector, L, by another UNSIGNED vector, R.
-
- -- Id: A.23
- function "/" (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(L'LENGTH-1 downto 0)
- -- Result: Divides an UNSIGNED vector, L, by a non-negative INTEGER, R.
- -- If NO_OF_BITS(R) > L'LENGTH, result is truncated to L'LENGTH.
-
- -- Id: A.24
- function "/" (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Divides a non-negative INTEGER, L, by an UNSIGNED 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 : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Computes "L rem R" where L and R are UNSIGNED vectors.
-
- -- Id: A.29
- function "rem" (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(L'LENGTH-1 downto 0)
- -- Result: Computes "L rem R" where L is an UNSIGNED vector and R is a
- -- non-negative INTEGER.
- -- If NO_OF_BITS(R) > L'LENGTH, result is truncated to L'LENGTH.
-
- -- Id: A.30
- function "rem" (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Computes "L rem R" where R is an UNSIGNED vector and L is a
- -- non-negative 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 : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Computes "L mod R" where L and R are UNSIGNED vectors.
-
- -- Id: A.35
- function "mod" (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(L'LENGTH-1 downto 0)
- -- Result: Computes "L mod R" where L is an UNSIGNED vector and R
- -- is a non-negative INTEGER.
- -- If NO_OF_BITS(R) > L'LENGTH, result is truncated to L'LENGTH.
-
- -- Id: A.36
- function "mod" (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Computes "L mod R" where R is an UNSIGNED vector and L
- -- is a non-negative INTEGER.
- -- If NO_OF_BITS(L) > R'LENGTH, result is truncated to R'LENGTH.
-
--- begin LCS-2006-129
- --============================================================================
- -- Id: A.39
- function find_leftmost (ARG : STD_ULOGIC_VECTOR; Y : STD_ULOGIC) 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 : STD_ULOGIC_VECTOR; Y : STD_ULOGIC) 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.
-
--- end LCS-2006-129
- --============================================================================
- -- Comparison Operators
- --============================================================================
-
- -- Id: C.1
- function ">" (L, R : STD_ULOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L > R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.3
- function ">" (L : NATURAL; R : STD_ULOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L > R" where L is a non-negative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.5
- function ">" (L : STD_ULOGIC_VECTOR; R : NATURAL) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L > R" where L is an UNSIGNED vector and
- -- R is a non-negative INTEGER.
-
- --============================================================================
-
- -- Id: C.7
- function "<" (L, R : STD_ULOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L < R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.9
- function "<" (L : NATURAL; R : STD_ULOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L < R" where L is a non-negative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.11
- function "<" (L : STD_ULOGIC_VECTOR; R : NATURAL) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L < R" where L is an UNSIGNED vector and
- -- R is a non-negative INTEGER.
-
- --============================================================================
-
- -- Id: C.13
- function "<=" (L, R : STD_ULOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L <= R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.15
- function "<=" (L : NATURAL; R : STD_ULOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L <= R" where L is a non-negative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.17
- function "<=" (L : STD_ULOGIC_VECTOR; R : NATURAL) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L <= R" where L is an UNSIGNED vector and
- -- R is a non-negative INTEGER.
-
- --============================================================================
-
- -- Id: C.19
- function ">=" (L, R : STD_ULOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L >= R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.21
- function ">=" (L : NATURAL; R : STD_ULOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L >= R" where L is a non-negative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.23
- function ">=" (L : STD_ULOGIC_VECTOR; R : NATURAL) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L >= R" where L is an UNSIGNED vector and
- -- R is a non-negative INTEGER.
-
- --============================================================================
-
- -- Id: C.25
- function "=" (L, R : STD_ULOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L = R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.27
- function "=" (L : NATURAL; R : STD_ULOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L = R" where L is a non-negative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.29
- function "=" (L : STD_ULOGIC_VECTOR; R : NATURAL) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L = R" where L is an UNSIGNED vector and
- -- R is a non-negative INTEGER.
-
- --============================================================================
-
- -- Id: C.31
- function "/=" (L, R : STD_ULOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L /= R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.33
- function "/=" (L : NATURAL; R : STD_ULOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L /= R" where L is a non-negative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.35
- function "/=" (L : STD_ULOGIC_VECTOR; R : NATURAL) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L /= R" where L is an UNSIGNED vector and
- -- R is a non-negative INTEGER.
-
- --============================================================================
-
- -- Id: C.37
- function MINIMUM (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR
- -- Result: Returns the lesser of two UNSIGNED vectors that may be
- -- of different lengths.
-
- -- Id: C.39
- function MINIMUM (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR
- -- Result: Returns the lesser of a nonnegative INTEGER, L, and
- -- an UNSIGNED vector, R.
-
- -- Id: C.41
- function MINIMUM (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR
- -- Result: Returns the lesser of an UNSIGNED vector, L, and
- -- a nonnegative INTEGER, R.
-
- --============================================================================
-
- -- Id: C.43
- function MAXIMUM (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR
- -- Result: Returns the greater of two UNSIGNED vectors that may be
- -- of different lengths.
-
- -- Id: C.45
- function MAXIMUM (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR
- -- Result: Returns the greater of a nonnegative INTEGER, L, and
- -- an UNSIGNED vector, R.
-
- -- Id: C.47
- function MAXIMUM (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR
- -- Result: Returns the greater of an UNSIGNED vector, L, and
- -- a nonnegative INTEGER, R.
-
- --============================================================================
- -- Id: C.49
- function \?>\ (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L > R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.51
- function \?>\ (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L > R" where L is a nonnegative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.53
- function \?>\ (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L > R" where L is an UNSIGNED vector and
- -- R is a nonnegative INTEGER.
-
- --============================================================================
-
- -- Id: C.55
- function \?<\ (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L < R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.57
- function \?<\ (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L < R" where L is a nonnegative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.59
- function \?<\ (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L < R" where L is an UNSIGNED vector and
- -- R is a nonnegative INTEGER.
-
- --============================================================================
-
- -- Id: C.61
- function \?<=\ (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L <= R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.63
- function \?<=\ (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L <= R" where L is a nonnegative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.65
- function \?<=\ (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L <= R" where L is an UNSIGNED vector and
- -- R is a nonnegative INTEGER.
-
- --============================================================================
-
- -- Id: C.67
- function \?>=\ (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L >= R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.69
- function \?>=\ (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L >= R" where L is a nonnegative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.71
- function \?>=\ (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L >= R" where L is an UNSIGNED vector and
- -- R is a nonnegative INTEGER.
-
- --============================================================================
-
- -- Id: C.73
--- function \?=\ (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L = R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.75
--- function \?=\ (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L = R" where L is a nonnegative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.77
--- function \?=\ (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L = R" where L is an UNSIGNED vector and
- -- R is a nonnegative INTEGER.
-
- --============================================================================
-
- -- Id: C.79
--- function \?/=\ (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L /= R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.81
--- function \?/=\ (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L /= R" where L is a nonnegative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.83
--- function \?/=\ (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L /= R" where L is an UNSIGNED vector and
- -- R is a nonnegative INTEGER.
-
- --============================================================================
- -- Shift and Rotate Functions
- --============================================================================
-
- -- Id: S.1
- function SHIFT_LEFT (ARG : STD_ULOGIC_VECTOR; COUNT : NATURAL)
- return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(ARG'LENGTH-1 downto 0)
- -- Result: Performs a shift-left on an UNSIGNED vector COUNT times.
- -- The vacated positions are filled with '0'.
- -- The COUNT leftmost elements are lost.
-
- -- Id: S.2
- function SHIFT_RIGHT (ARG : STD_ULOGIC_VECTOR; COUNT : NATURAL)
- return STD_ULOGIC_VECTOR;
- -- 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 '0'.
- -- The COUNT rightmost elements are lost.
- --============================================================================
-
- -- Id: S.5
- function ROTATE_LEFT (ARG : STD_ULOGIC_VECTOR; COUNT : NATURAL)
- return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(ARG'LENGTH-1 downto 0)
- -- Result: Performs a rotate-left of an UNSIGNED vector COUNT times.
-
- -- Id: S.6
- function ROTATE_RIGHT (ARG : STD_ULOGIC_VECTOR; COUNT : NATURAL)
- return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(ARG'LENGTH-1 downto 0)
- -- Result: Performs a rotate-right of an UNSIGNED vector COUNT times.
-
- ------------------------------------------------------------------------------
- -- 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 : STD_ULOGIC_VECTOR; COUNT : INTEGER) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(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 : STD_ULOGIC_VECTOR; COUNT : INTEGER) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(ARG'LENGTH-1 downto 0)
- -- Result: SHIFT_RIGHT(ARG, COUNT)
-
-
- --============================================================================
- -- RESIZE Functions
- --============================================================================
-
- -- Id: R.2
- function RESIZE (ARG : STD_ULOGIC_VECTOR; NEW_SIZE : NATURAL)
- return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(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.
-
- -- size_res versions of these functions (Bugzilla 165)
- function RESIZE (ARG, SIZE_RES : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR (SIZE_RES'length-1 downto 0)
- --============================================================================
- -- Conversion Functions
- --============================================================================
-
- -- Id: D.1
- function TO_INTEGER (ARG : STD_ULOGIC_VECTOR) 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.3
- function To_StdLogicVector (ARG, SIZE : NATURAL) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(SIZE-1 downto 0)
- -- Result: Converts a non-negative INTEGER to an UNSIGNED vector with
- -- the specified SIZE.
-
--- begin LCS-2006-130
- alias To_Std_Logic_Vector is
- To_StdLogicVector[NATURAL, NATURAL return STD_LOGIC_VECTOR];
- alias To_SLV is
- To_StdLogicVector[NATURAL, NATURAL return STD_LOGIC_VECTOR];
- -- size_res versions of these functions (Bugzilla 165)
- function To_StdLogicVector (ARG : NATURAL; SIZE_RES : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(SIZE_RES'length-1 downto 0)
--- end LCS-2006-130
- -- Id: D.5
- function To_StdULogicVector (ARG, SIZE : NATURAL) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(SIZE-1 downto 0)
- -- Result: Converts a non-negative INTEGER to an UNSIGNED vector with
- -- the specified SIZE.
- -- size_res versions of these functions (Bugzilla 165)
- function To_StdULogicVector (ARG : NATURAL; SIZE_RES : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(SIZE_RES'length-1 downto 0)
--- begin LCS-2006-130
- alias To_Std_ULogic_Vector is
- To_StdULogicVector[NATURAL, NATURAL return STD_ULOGIC_VECTOR];
- alias To_SULV is
- To_StdULogicVector[NATURAL, NATURAL return STD_ULOGIC_VECTOR];
- alias To_Std_ULogic_Vector is
- To_StdULogicVector[NATURAL, STD_ULOGIC_VECTOR return STD_ULOGIC_VECTOR];
- alias To_SULV is
- To_StdULogicVector[NATURAL, STD_ULOGIC_VECTOR return STD_ULOGIC_VECTOR];
-
--- end LCS-2006-130
- --============================================================================
- -- Translation Functions
- --============================================================================
-
- -- Id: T.1
- function TO_01 (S : STD_ULOGIC_VECTOR; XMAP : STD_ULOGIC := '0')
- return STD_ULOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR(S'RANGE)
- -- Result: Termwise, 'H' is translated to '1', and 'L' is translated
- -- to '0'. If a value other than '0'|'1'|'H'|'L' is found,
- -- the array is set to (others => XMAP), and a warning is
- -- issued.
--- begin LCS-2006-141
- -- Replace all subsequent occurrences of STD_LOGIC_VECTOR
- -- with STD_ULOGIC_ECTOR.
--- end LCS-2006-141
- -- Id: A.3
- function "+" (L, R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(MAXIMUM(L'LENGTH, R'LENGTH)-1 downto 0).
- -- Result: Adds two UNSIGNED vectors that may be of different lengths.
-
- -- Id: A.3R
- function "+"(L : STD_LOGIC_VECTOR; R : STD_ULOGIC) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(L'LENGTH-1 downto 0)
- -- Result: Similar to A.3 where R is a one bit STD_LOGIC_VECTOR
-
- -- Id: A.3L
- function "+"(L : STD_ULOGIC; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Similar to A.3 where L is a one bit UNSIGNED
-
- -- Id: A.5
- function "+" (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(L'LENGTH-1 downto 0).
- -- Result: Adds an UNSIGNED vector, L, with a non-negative INTEGER, R.
-
- -- Id: A.6
- function "+" (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(R'LENGTH-1 downto 0).
- -- Result: Adds a non-negative INTEGER, L, with an UNSIGNED vector, R.
-
- --============================================================================
-
- -- Id: A.9
- function "-" (L, R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- 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 : STD_LOGIC_VECTOR; R : STD_ULOGIC) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(L'LENGTH-1 downto 0)
- -- Result: Similar to A.9 where R is a one bit UNSIGNED
-
- -- Id: A.9L
- function "-"(L : STD_ULOGIC; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Similar to A.9 where L is a one bit UNSIGNED
-
- -- Id: A.11
- function "-" (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(L'LENGTH-1 downto 0).
- -- Result: Subtracts a non-negative INTEGER, R, from an UNSIGNED vector, L.
-
- -- Id: A.12
- function "-" (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(R'LENGTH-1 downto 0).
- -- Result: Subtracts an UNSIGNED vector, R, from a non-negative INTEGER, L.
-
- --============================================================================
-
- -- Id: A.15
- function "*" (L, R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR((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.17
- function "*" (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR((L'LENGTH+L'LENGTH-1) downto 0).
- -- Result: Multiplies an UNSIGNED vector, L, with a non-negative
- -- INTEGER, R. R is converted to an UNSIGNED vector of
- -- SIZE L'LENGTH before multiplication.
-
- -- Id: A.18
- function "*" (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR((R'LENGTH+R'LENGTH-1) downto 0).
- -- Result: Multiplies an UNSIGNED vector, R, with a non-negative
- -- INTEGER, L. L is converted to an UNSIGNED 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 : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(L'LENGTH-1 downto 0)
- -- Result: Divides an UNSIGNED vector, L, by another UNSIGNED vector, R.
-
- -- Id: A.23
- function "/" (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(L'LENGTH-1 downto 0)
- -- Result: Divides an UNSIGNED vector, L, by a non-negative INTEGER, R.
- -- If NO_OF_BITS(R) > L'LENGTH, result is truncated to L'LENGTH.
-
- -- Id: A.24
- function "/" (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Divides a non-negative INTEGER, L, by an UNSIGNED 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 : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Computes "L rem R" where L and R are UNSIGNED vectors.
-
- -- Id: A.29
- function "rem" (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(L'LENGTH-1 downto 0)
- -- Result: Computes "L rem R" where L is an UNSIGNED vector and R is a
- -- non-negative INTEGER.
- -- If NO_OF_BITS(R) > L'LENGTH, result is truncated to L'LENGTH.
-
- -- Id: A.30
- function "rem" (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Computes "L rem R" where R is an UNSIGNED vector and L is a
- -- non-negative 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 : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Computes "L mod R" where L and R are UNSIGNED vectors.
-
- -- Id: A.35
- function "mod" (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(L'LENGTH-1 downto 0)
- -- Result: Computes "L mod R" where L is an UNSIGNED vector and R
- -- is a non-negative INTEGER.
- -- If NO_OF_BITS(R) > L'LENGTH, result is truncated to L'LENGTH.
-
- -- Id: A.36
- function "mod" (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(R'LENGTH-1 downto 0)
- -- Result: Computes "L mod R" where R is an UNSIGNED vector and L
- -- is a non-negative INTEGER.
- -- If NO_OF_BITS(L) > R'LENGTH, result is truncated to R'LENGTH.
-
--- begin LCS-2006-129
- --============================================================================
- -- Id: A.39
- function find_leftmost (ARG : STD_LOGIC_VECTOR; Y : STD_ULOGIC) 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 : STD_LOGIC_VECTOR; Y : STD_ULOGIC) 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.
-
--- end LCS-2006-129
- --============================================================================
- -- Comparison Operators
- --============================================================================
-
- -- Id: C.1
- function ">" (L, R : STD_LOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L > R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.3
- function ">" (L : NATURAL; R : STD_LOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L > R" where L is a non-negative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.5
- function ">" (L : STD_LOGIC_VECTOR; R : NATURAL) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L > R" where L is an UNSIGNED vector and
- -- R is a non-negative INTEGER.
-
- --============================================================================
-
- -- Id: C.7
- function "<" (L, R : STD_LOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L < R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.9
- function "<" (L : NATURAL; R : STD_LOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L < R" where L is a non-negative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.11
- function "<" (L : STD_LOGIC_VECTOR; R : NATURAL) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L < R" where L is an UNSIGNED vector and
- -- R is a non-negative INTEGER.
-
- --============================================================================
-
- -- Id: C.13
- function "<=" (L, R : STD_LOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L <= R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.15
- function "<=" (L : NATURAL; R : STD_LOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L <= R" where L is a non-negative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.17
- function "<=" (L : STD_LOGIC_VECTOR; R : NATURAL) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L <= R" where L is an UNSIGNED vector and
- -- R is a non-negative INTEGER.
-
- --============================================================================
-
- -- Id: C.19
- function ">=" (L, R : STD_LOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L >= R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.21
- function ">=" (L : NATURAL; R : STD_LOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L >= R" where L is a non-negative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.23
- function ">=" (L : STD_LOGIC_VECTOR; R : NATURAL) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L >= R" where L is an UNSIGNED vector and
- -- R is a non-negative INTEGER.
-
- --============================================================================
-
- -- Id: C.25
- function "=" (L, R : STD_LOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L = R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.27
- function "=" (L : NATURAL; R : STD_LOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L = R" where L is a non-negative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.29
- function "=" (L : STD_LOGIC_VECTOR; R : NATURAL) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L = R" where L is an UNSIGNED vector and
- -- R is a non-negative INTEGER.
-
- --============================================================================
-
- -- Id: C.31
- function "/=" (L, R : STD_LOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L /= R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.33
- function "/=" (L : NATURAL; R : STD_LOGIC_VECTOR) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L /= R" where L is a non-negative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.35
- function "/=" (L : STD_LOGIC_VECTOR; R : NATURAL) return BOOLEAN;
- -- Result subtype: BOOLEAN
- -- Result: Computes "L /= R" where L is an UNSIGNED vector and
- -- R is a non-negative INTEGER.
-
- --============================================================================
-
- -- Id: C.37
- function MINIMUM (L, R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR
- -- Result: Returns the lesser of two UNSIGNED vectors that may be
- -- of different lengths.
-
- -- Id: C.39
- function MINIMUM (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR
- -- Result: Returns the lesser of a nonnegative INTEGER, L, and
- -- an UNSIGNED vector, R.
-
- -- Id: C.41
- function MINIMUM (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR
- -- Result: Returns the lesser of an UNSIGNED vector, L, and
- -- a nonnegative INTEGER, R.
-
- --============================================================================
-
- -- Id: C.43
- function MAXIMUM (L, R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR
- -- Result: Returns the greater of two UNSIGNED vectors that may be
- -- of different lengths.
-
- -- Id: C.45
- function MAXIMUM (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR
- -- Result: Returns the greater of a nonnegative INTEGER, L, and
- -- an UNSIGNED vector, R.
-
- -- Id: C.47
- function MAXIMUM (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR
- -- Result: Returns the greater of an UNSIGNED vector, L, and
- -- a nonnegative INTEGER, R.
-
- --============================================================================
- -- Id: C.49
- function \?>\ (L, R : STD_LOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L > R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.51
- function \?>\ (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L > R" where L is a nonnegative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.53
- function \?>\ (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L > R" where L is an UNSIGNED vector and
- -- R is a nonnegative INTEGER.
-
- --============================================================================
-
- -- Id: C.55
- function \?<\ (L, R : STD_LOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L < R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.57
- function \?<\ (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L < R" where L is a nonnegative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.59
- function \?<\ (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L < R" where L is an UNSIGNED vector and
- -- R is a nonnegative INTEGER.
-
- --============================================================================
-
- -- Id: C.61
- function \?<=\ (L, R : STD_LOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L <= R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.63
- function \?<=\ (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L <= R" where L is a nonnegative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.65
- function \?<=\ (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L <= R" where L is an UNSIGNED vector and
- -- R is a nonnegative INTEGER.
-
- --============================================================================
-
- -- Id: C.67
- function \?>=\ (L, R : STD_LOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L >= R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.69
- function \?>=\ (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L >= R" where L is a nonnegative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.71
- function \?>=\ (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L >= R" where L is an UNSIGNED vector and
- -- R is a nonnegative INTEGER.
-
- --============================================================================
-
- -- Id: C.73
--- function \?=\ (L, R : STD_LOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L = R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.75
--- function \?=\ (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L = R" where L is a nonnegative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.77
--- function \?=\ (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L = R" where L is an UNSIGNED vector and
- -- R is a nonnegative INTEGER.
-
- --============================================================================
-
- -- Id: C.79
--- function \?/=\ (L, R : STD_LOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L /= R" where L and R are UNSIGNED vectors possibly
- -- of different lengths.
-
- -- Id: C.81
--- function \?/=\ (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L /= R" where L is a nonnegative INTEGER and
- -- R is an UNSIGNED vector.
-
- -- Id: C.83
--- function \?/=\ (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_ULOGIC;
- -- Result subtype: STD_ULOGIC
- -- Result: Computes "L /= R" where L is an UNSIGNED vector and
- -- R is a nonnegative INTEGER.
-
- --============================================================================
- -- Shift and Rotate Functions
- --============================================================================
-
- -- Id: S.1
- function SHIFT_LEFT (ARG : STD_LOGIC_VECTOR; COUNT : NATURAL)
- return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(ARG'LENGTH-1 downto 0)
- -- Result: Performs a shift-left on an UNSIGNED vector COUNT times.
- -- The vacated positions are filled with '0'.
- -- The COUNT leftmost elements are lost.
-
- -- Id: S.2
- function SHIFT_RIGHT (ARG : STD_LOGIC_VECTOR; COUNT : NATURAL)
- return STD_LOGIC_VECTOR;
- -- 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 '0'.
- -- The COUNT rightmost elements are lost.
- --============================================================================
-
- -- Id: S.5
- function ROTATE_LEFT (ARG : STD_LOGIC_VECTOR; COUNT : NATURAL)
- return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(ARG'LENGTH-1 downto 0)
- -- Result: Performs a rotate-left of an UNSIGNED vector COUNT times.
-
- -- Id: S.6
- function ROTATE_RIGHT (ARG : STD_LOGIC_VECTOR; COUNT : NATURAL)
- return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(ARG'LENGTH-1 downto 0)
- -- Result: Performs a rotate-right of an UNSIGNED vector COUNT times.
-
- ------------------------------------------------------------------------------
- -- 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 : STD_LOGIC_VECTOR; COUNT : INTEGER) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(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 : STD_LOGIC_VECTOR; COUNT : INTEGER) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(ARG'LENGTH-1 downto 0)
- -- Result: SHIFT_RIGHT(ARG, COUNT)
-
-
- --============================================================================
- -- RESIZE Functions
- --============================================================================
-
- -- Id: R.2
- function RESIZE (ARG : STD_LOGIC_VECTOR; NEW_SIZE : NATURAL)
- return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(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.
-
- -- size_res versions of these functions (Bugzilla 165)
- function RESIZE (ARG, SIZE_RES : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR;
- -- Result subtype: STD_ULOGIC_VECTOR (SIZE_RES'length-1 downto 0)
- --============================================================================
- -- Conversion Functions
- --============================================================================
-
- -- Id: D.1
- function TO_INTEGER (ARG : STD_LOGIC_VECTOR) return NATURAL;
- -- Result subtype: NATURAL. Value cannot be negative since parameter is an
- -- UNSIGNED vector.
- -- Result: Converts the UNSIGNED vector to an INTEGER.
-
--- end LCS-2006-130
-
- --============================================================================
- -- Translation Functions
- --============================================================================
-
- -- Id: T.1
- function TO_01 (S : STD_LOGIC_VECTOR; XMAP : STD_ULOGIC := '0')
- return STD_LOGIC_VECTOR;
- -- Result subtype: STD_LOGIC_VECTOR(S'RANGE)
- -- Result: Termwise, 'H' is translated to '1', and 'L' is translated
- -- to '0'. If a value other than '0'|'1'|'H'|'L' is found,
- -- the array is set to (others => XMAP), and a warning is
- -- issued.
-end package NUMERIC_STD_UNSIGNED;
--------------------------------------------------------------------------------
--- Proposed package body for the VHDL-200x-FT NUMERIC_STD_UNSIGNED package
--- This package body supplies a recommended implementation of these functions
--- Version: $Revision: 1.4 $
--- Date: $Date: 2009/08/26 19:56:30 $
---
--- Created for VHDL-200X par, David Bishop (dbishop@vhdl.org)
--------------------------------------------------------------------------------
-library ieee;
-use ieee.numeric_std.all;
-use work.numeric_std_additions.all;
-
-package body NUMERIC_STD_UNSIGNED is
-
- -- Id: A.3
- function "+" (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) + UNSIGNED(R));
- end function "+";
-
- -- Id: A.3R
- function "+"(L : STD_ULOGIC_VECTOR; R : STD_ULOGIC) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) + R);
- end function "+";
-
- -- Id: A.3L
- function "+"(L : STD_ULOGIC; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (L + UNSIGNED(R));
- end function "+";
-
- -- Id: A.5
- function "+" (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) + R);
- end function "+";
-
- -- Id: A.6
- function "+" (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (L + UNSIGNED(R));
- end function "+";
-
- --============================================================================
-
- -- Id: A.9
- function "-" (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) - UNSIGNED(R));
- end function "-";
-
- -- Id: A.9R
- function "-"(L : STD_ULOGIC_VECTOR; R : STD_ULOGIC) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) - R);
- end function "-";
-
- -- Id: A.9L
- function "-"(L : STD_ULOGIC; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (L - UNSIGNED(R));
- end function "-";
-
- -- Id: A.11
- function "-" (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) - R);
- end function "-";
-
- -- Id: A.12
- function "-" (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (L - UNSIGNED(R));
- end function "-";
-
- --============================================================================
-
- -- Id: A.15
- function "*" (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) * UNSIGNED(R));
- end function "*";
-
- -- Id: A.17
- function "*" (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) * R);
- end function "*";
-
- -- Id: A.18
- function "*" (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (L * UNSIGNED(R));
- end function "*";
-
- --============================================================================
-
- -- Id: A.21
- function "/" (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) / UNSIGNED(R));
- end function "/";
-
- -- Id: A.23
- function "/" (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) / R);
- end function "/";
-
- -- Id: A.24
- function "/" (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (L / UNSIGNED(R));
- end function "/";
-
- --============================================================================
-
- -- Id: A.27
- function "rem" (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) rem UNSIGNED(R));
- end function "rem";
-
- -- Id: A.29
- function "rem" (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) rem R);
- end function "rem";
-
- -- Id: A.30
- function "rem" (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (L rem UNSIGNED(R));
- end function "rem";
-
- --============================================================================
-
- -- Id: A.33
- function "mod" (L, R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) mod UNSIGNED(R));
- end function "mod";
-
- -- Id: A.35
- function "mod" (L : STD_ULOGIC_VECTOR; R : NATURAL) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(L) mod R);
- end function "mod";
-
- -- Id: A.36
- function "mod" (L : NATURAL; R : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (L mod UNSIGNED(R));
- end function "mod";
-
--- begin LCS-2006-129
- --============================================================================
- -- Id: A.39
- function find_leftmost (ARG: STD_ULOGIC_VECTOR; Y: STD_ULOGIC) return INTEGER is
- begin
- return find_leftmost(UNSIGNED(ARG), Y);
- end function find_leftmost;
-
- -- Id: A.41
- function find_rightmost (ARG: STD_ULOGIC_VECTOR; Y: STD_ULOGIC) return INTEGER is
- begin
- return find_rightmost(UNSIGNED(ARG), Y);
- end function find_rightmost;
-
--- end LCS-2006-129
- --============================================================================
-
- -- Id: C.1
- function ">" (L, R : STD_ULOGIC_VECTOR) return BOOLEAN is
- begin
- return UNSIGNED(L) > UNSIGNED(R);
- end function ">";
-
- -- Id: C.3
- function ">" (L : NATURAL; R : STD_ULOGIC_VECTOR) return BOOLEAN is
- begin
- return L > UNSIGNED(R);
- end function ">";
-
- -- Id: C.5
- function ">" (L : STD_ULOGIC_VECTOR; R : NATURAL) return BOOLEAN is
- begin
- return UNSIGNED(L) > R;
- end function ">";
-
- --============================================================================
-
- -- Id: C.7
- function "<" (L, R : STD_ULOGIC_VECTOR) return BOOLEAN is
- begin
- return UNSIGNED(L) < UNSIGNED(R);
- end function "<";
-
- -- Id: C.9
- function "<" (L : NATURAL; R : STD_ULOGIC_VECTOR) return BOOLEAN is
- begin
- return L < UNSIGNED(R);
- end function "<";
-
- -- Id: C.11
- function "<" (L : STD_ULOGIC_VECTOR; R : NATURAL) return BOOLEAN is
- begin
- return UNSIGNED(L) < R;
- end function "<";
-
- --============================================================================
-
- -- Id: C.13
- function "<=" (L, R : STD_ULOGIC_VECTOR) return BOOLEAN is
- begin
- return UNSIGNED(L) <= UNSIGNED(R);
- end function "<=";
-
- -- Id: C.15
- function "<=" (L : NATURAL; R : STD_ULOGIC_VECTOR) return BOOLEAN is
- begin
- return L <= UNSIGNED(R);
- end function "<=";
-
- -- Id: C.17
- function "<=" (L : STD_ULOGIC_VECTOR; R : NATURAL) return BOOLEAN is
- begin
- return UNSIGNED(L) <= R;
- end function "<=";
-
- --============================================================================
-
- -- Id: C.19
- function ">=" (L, R : STD_ULOGIC_VECTOR) return BOOLEAN is
- begin
- return UNSIGNED(L) >= UNSIGNED(R);
- end function ">=";
-
- -- Id: C.21
- function ">=" (L : NATURAL; R : STD_ULOGIC_VECTOR) return BOOLEAN is
- begin
- return L >= UNSIGNED(R);
- end function ">=";
-
- -- Id: C.23
- function ">=" (L : STD_ULOGIC_VECTOR; R : NATURAL) return BOOLEAN is
- begin
- return UNSIGNED(L) >= R;
- end function ">=";
-
- --============================================================================
-
- -- Id: C.25
- function "=" (L, R : STD_ULOGIC_VECTOR) return BOOLEAN is
- begin
- return UNSIGNED(L) = UNSIGNED(R);
- end function "=";
-
- -- Id: C.27
- function "=" (L : NATURAL; R : STD_ULOGIC_VECTOR) return BOOLEAN is
- begin
- return L = UNSIGNED(R);
- end function "=";
-
- -- Id: C.29
- function "=" (L : STD_ULOGIC_VECTOR; R : NATURAL) return BOOLEAN is
- begin
- return UNSIGNED(L) = R;
- end function "=";
-
- --============================================================================
-
- -- Id: C.31
- function "/=" (L, R : STD_ULOGIC_VECTOR) return BOOLEAN is
- begin
- return UNSIGNED(L) /= UNSIGNED(R);
- end function "/=";
-
- -- Id: C.33
- function "/=" (L : NATURAL; R : STD_ULOGIC_VECTOR) return BOOLEAN is
- begin
- return L /= UNSIGNED(R);
- end function "/=";
-
- -- Id: C.35
- function "/=" (L : STD_ULOGIC_VECTOR; R : NATURAL) return BOOLEAN is
- begin
- return UNSIGNED(L) /= R;
- end function "/=";
-
- --============================================================================
-
- -- Id: C.37
- function MINIMUM (L, R: STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (MINIMUM(UNSIGNED(L), UNSIGNED(R)));
- end function MINIMUM;
-
- -- Id: C.39
- function MINIMUM (L: NATURAL; R: STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (MINIMUM(L, UNSIGNED(R)));
- end function MINIMUM;
-
- -- Id: C.41
- function MINIMUM (L: STD_ULOGIC_VECTOR; R: NATURAL) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (MINIMUM(UNSIGNED(L), R));
- end function MINIMUM;
-
- --============================================================================
- -- Id: C.43
- function MAXIMUM (L, R: STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (MAXIMUM(UNSIGNED(L), UNSIGNED(R)));
- end function MAXIMUM;
-
- -- Id: C.45
- function MAXIMUM (L: NATURAL; R: STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (MAXIMUM(L, UNSIGNED(R)));
- end function MAXIMUM;
-
- -- Id: C.47
- function MAXIMUM (L: STD_ULOGIC_VECTOR; R: NATURAL) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (MAXIMUM(UNSIGNED(L), R));
- end function MAXIMUM;
-
- --============================================================================
-
- -- Id: C.49
- function \?>\ (L, R: STD_ULOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?>\ (UNSIGNED(L), UNSIGNED(R));
- end function \?>\;
-
- -- Id: C.51
- function \?>\ (L: NATURAL; R: STD_ULOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?>\ (L, UNSIGNED(R));
- end function \?>\;
-
- -- Id: C.53
- function \?>\ (L: STD_ULOGIC_VECTOR; R: NATURAL) return STD_ULOGIC is
- begin
- return \?>\ (UNSIGNED(L), R);
- end function \?>\;
-
- --============================================================================
-
- -- Id: C.55
- function \?<\ (L, R: STD_ULOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?<\ (UNSIGNED(L), UNSIGNED(R));
- end function \?<\;
-
- -- Id: C.57
- function \?<\ (L: NATURAL; R: STD_ULOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?<\ (L, UNSIGNED(R));
- end function \?<\;
-
- -- Id: C.59
- function \?<\ (L: STD_ULOGIC_VECTOR; R: NATURAL) return STD_ULOGIC is
- begin
- return \?<\ (UNSIGNED(L), R);
- end function \?<\;
-
- --============================================================================
-
- -- Id: C.61
- function \?<=\ (L, R: STD_ULOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?<=\ (UNSIGNED(L), UNSIGNED(R));
- end function \?<=\;
-
- -- Id: C.63
- function \?<=\ (L: NATURAL; R: STD_ULOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?<=\ (L, UNSIGNED(R));
- end function \?<=\;
-
- -- Id: C.65
- function \?<=\ (L: STD_ULOGIC_VECTOR; R: NATURAL) return STD_ULOGIC is
- begin
- return \?<=\ (UNSIGNED(L), R);
- end function \?<=\;
-
- --============================================================================
-
- -- Id: C.67
- function \?>=\ (L, R: STD_ULOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?>=\ (UNSIGNED(L), UNSIGNED(R));
- end function \?>=\;
-
- -- Id: C.69
- function \?>=\ (L: NATURAL; R: STD_ULOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?>=\ (L, UNSIGNED(R));
- end function \?>=\;
-
- -- Id: C.71
- function \?>=\ (L: STD_ULOGIC_VECTOR; R: NATURAL) return STD_ULOGIC is
- begin
- return \?>=\ (UNSIGNED(L), R);
- end function \?>=\;
-
- --============================================================================
-
- -- Id: C.73
--- function \?=\ (L, R: STD_ULOGIC_VECTOR) return STD_ULOGIC is
--- begin
--- return \?=\ (UNSIGNED(L), UNSIGNED(R));
--- end function \?=\;
-
--- -- Id: C.75
--- function \?=\ (L: NATURAL; R: STD_ULOGIC_VECTOR) return STD_ULOGIC is
--- begin
--- return \?=\ (L, UNSIGNED(R));
--- end function \?=\;
-
--- -- Id: C.77
--- function \?=\ (L: STD_ULOGIC_VECTOR; R: NATURAL) return STD_ULOGIC is
--- begin
--- return \?=\ (UNSIGNED(L), R);
--- end function \?=\;
-
--- --============================================================================
-
--- -- Id: C.79
--- function \?/=\ (L, R: STD_ULOGIC_VECTOR) return STD_ULOGIC is
--- begin
--- return \?/=\ (UNSIGNED(L), UNSIGNED(R));
--- end function \?/=\;
-
--- -- Id: C.81
--- function \?/=\ (L: NATURAL; R: STD_ULOGIC_VECTOR) return STD_ULOGIC is
--- begin
--- return \?/=\ (L, UNSIGNED(R));
--- end function \?/=\;
-
--- -- Id: C.83
--- function \?/=\ (L: STD_ULOGIC_VECTOR; R: NATURAL) return STD_ULOGIC is
--- begin
--- return \?/=\ (UNSIGNED(L), R);
--- end function \?/=\;
-
- --============================================================================
-
- -- Id: S.1
- function SHIFT_LEFT (ARG : STD_ULOGIC_VECTOR; COUNT : NATURAL) return STD_ULOGIC_VECTOR is
- begin
- return std_ulogic_vector (SHIFT_LEFT(unsigned(ARG), COUNT));
- end function SHIFT_LEFT;
-
- -- Id: S.2
- function SHIFT_RIGHT (ARG : STD_ULOGIC_VECTOR; COUNT : NATURAL) return STD_ULOGIC_VECTOR is
- begin
- return std_ulogic_vector (SHIFT_RIGHT(unsigned(ARG), COUNT));
- end function SHIFT_RIGHT;
-
- --============================================================================
-
- -- Id: S.5
- function ROTATE_LEFT (ARG : STD_ULOGIC_VECTOR; COUNT : NATURAL) return STD_ULOGIC_VECTOR is
- begin
- return std_ulogic_vector (ROTATE_LEFT(unsigned(ARG), COUNT));
- end function ROTATE_LEFT;
-
- -- Id: S.6
- function ROTATE_RIGHT (ARG : STD_ULOGIC_VECTOR; COUNT : NATURAL) return STD_ULOGIC_VECTOR is
- begin
- return std_ulogic_vector (ROTATE_RIGHT(unsigned(ARG), COUNT));
- end function ROTATE_RIGHT;
-
- --============================================================================
-
- -- Id: S.17
- function "sla" (ARG: STD_ULOGIC_VECTOR; COUNT: INTEGER) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(ARG) sla COUNT);
- end function "sla";
-
- -- Id: S.19
- function "sra" (ARG: STD_ULOGIC_VECTOR; COUNT: INTEGER) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (UNSIGNED(ARG) sra COUNT);
- end function "sra";
-
- --============================================================================
-
- -- Id: R.2
- function RESIZE (ARG : STD_ULOGIC_VECTOR; NEW_SIZE : NATURAL)
- return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (
- RESIZE (ARG => UNSIGNED(ARG),
- NEW_SIZE => NEW_SIZE));
- end function RESIZE;
-
- function RESIZE (ARG, SIZE_RES : STD_ULOGIC_VECTOR)
- return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (
- RESIZE (ARG => UNSIGNED(ARG),
- NEW_SIZE => SIZE_RES'length));
- end function RESIZE;
- --============================================================================
-
- -- Id: D.1
- function TO_INTEGER (ARG : STD_ULOGIC_VECTOR) return NATURAL is
- begin
- return TO_INTEGER(UNSIGNED(ARG));
- end function TO_INTEGER;
-
- -- Id: D.3
- function To_StdLogicVector (ARG, SIZE : NATURAL) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (TO_UNSIGNED(ARG => ARG,
- SIZE => SIZE));
- end function To_StdLogicVector;
-
- function To_StdLogicVector (ARG : NATURAL; SIZE_RES : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (TO_UNSIGNED(ARG => ARG,
- SIZE => SIZE_RES'length));
- end function To_StdLogicVector;
- -- Id: D.5
- function To_StdULogicVector (ARG, SIZE : NATURAL) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (TO_UNSIGNED(ARG => ARG,
- SIZE => SIZE));
- end function To_StdULogicVector;
-
- function To_StdULogicVector (ARG : NATURAL; SIZE_RES : STD_ULOGIC_VECTOR) return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (TO_UNSIGNED(ARG => ARG,
- SIZE => SIZE_RES'length));
- end function To_StdULogicVector;
- --============================================================================
-
- -- function TO_01 is used to convert vectors to the
- -- correct form for exported functions,
- -- and to report if there is an element which
- -- is not in (0, 1, H, L).
-
- -- Id: T.1
- function TO_01 (S : STD_ULOGIC_VECTOR; XMAP : STD_ULOGIC := '0')
- return STD_ULOGIC_VECTOR is
- begin
- return STD_ULOGIC_VECTOR (
- TO_01 (S => UNSIGNED(S),
- XMAP => XMAP));
- end function TO_01;
-
- -- Id: A.3
- function "+" (L, R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) + UNSIGNED(R));
- end function "+";
-
- -- Id: A.3R
- function "+"(L : STD_LOGIC_VECTOR; R : STD_ULOGIC) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) + R);
- end function "+";
-
- -- Id: A.3L
- function "+"(L : STD_ULOGIC; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (L + UNSIGNED(R));
- end function "+";
-
- -- Id: A.5
- function "+" (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) + R);
- end function "+";
-
- -- Id: A.6
- function "+" (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (L + UNSIGNED(R));
- end function "+";
-
- --============================================================================
-
- -- Id: A.9
- function "-" (L, R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) - UNSIGNED(R));
- end function "-";
-
- -- Id: A.9R
- function "-"(L : STD_LOGIC_VECTOR; R : STD_ULOGIC) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) - R);
- end function "-";
-
- -- Id: A.9L
- function "-"(L : STD_ULOGIC; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (L - UNSIGNED(R));
- end function "-";
-
- -- Id: A.11
- function "-" (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) - R);
- end function "-";
-
- -- Id: A.12
- function "-" (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (L - UNSIGNED(R));
- end function "-";
-
- --============================================================================
-
- -- Id: A.15
- function "*" (L, R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) * UNSIGNED(R));
- end function "*";
-
- -- Id: A.17
- function "*" (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) * R);
- end function "*";
-
- -- Id: A.18
- function "*" (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (L * UNSIGNED(R));
- end function "*";
-
- --============================================================================
-
- -- Id: A.21
- function "/" (L, R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) / UNSIGNED(R));
- end function "/";
-
- -- Id: A.23
- function "/" (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) / R);
- end function "/";
-
- -- Id: A.24
- function "/" (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (L / UNSIGNED(R));
- end function "/";
-
- --============================================================================
-
- -- Id: A.27
- function "rem" (L, R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) rem UNSIGNED(R));
- end function "rem";
-
- -- Id: A.29
- function "rem" (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) rem R);
- end function "rem";
-
- -- Id: A.30
- function "rem" (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (L rem UNSIGNED(R));
- end function "rem";
-
- --============================================================================
-
- -- Id: A.33
- function "mod" (L, R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) mod UNSIGNED(R));
- end function "mod";
-
- -- Id: A.35
- function "mod" (L : STD_LOGIC_VECTOR; R : NATURAL) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(L) mod R);
- end function "mod";
-
- -- Id: A.36
- function "mod" (L : NATURAL; R : STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (L mod UNSIGNED(R));
- end function "mod";
-
--- begin LCS-2006-129
- --============================================================================
- -- Id: A.39
- function find_leftmost (ARG: STD_LOGIC_VECTOR; Y: STD_ULOGIC) return INTEGER is
- begin
- return find_leftmost(UNSIGNED(ARG), Y);
- end function find_leftmost;
-
- -- Id: A.41
- function find_rightmost (ARG: STD_LOGIC_VECTOR; Y: STD_ULOGIC) return INTEGER is
- begin
- return find_rightmost(UNSIGNED(ARG), Y);
- end function find_rightmost;
-
--- end LCS-2006-129
- --============================================================================
-
- -- Id: C.1
- function ">" (L, R : STD_LOGIC_VECTOR) return BOOLEAN is
- begin
- return UNSIGNED(L) > UNSIGNED(R);
- end function ">";
-
- -- Id: C.3
- function ">" (L : NATURAL; R : STD_LOGIC_VECTOR) return BOOLEAN is
- begin
- return L > UNSIGNED(R);
- end function ">";
-
- -- Id: C.5
- function ">" (L : STD_LOGIC_VECTOR; R : NATURAL) return BOOLEAN is
- begin
- return UNSIGNED(L) > R;
- end function ">";
-
- --============================================================================
-
- -- Id: C.7
- function "<" (L, R : STD_LOGIC_VECTOR) return BOOLEAN is
- begin
- return UNSIGNED(L) < UNSIGNED(R);
- end function "<";
-
- -- Id: C.9
- function "<" (L : NATURAL; R : STD_LOGIC_VECTOR) return BOOLEAN is
- begin
- return L < UNSIGNED(R);
- end function "<";
-
- -- Id: C.11
- function "<" (L : STD_LOGIC_VECTOR; R : NATURAL) return BOOLEAN is
- begin
- return UNSIGNED(L) < R;
- end function "<";
-
- --============================================================================
-
- -- Id: C.13
- function "<=" (L, R : STD_LOGIC_VECTOR) return BOOLEAN is
- begin
- return UNSIGNED(L) <= UNSIGNED(R);
- end function "<=";
-
- -- Id: C.15
- function "<=" (L : NATURAL; R : STD_LOGIC_VECTOR) return BOOLEAN is
- begin
- return L <= UNSIGNED(R);
- end function "<=";
-
- -- Id: C.17
- function "<=" (L : STD_LOGIC_VECTOR; R : NATURAL) return BOOLEAN is
- begin
- return UNSIGNED(L) <= R;
- end function "<=";
-
- --============================================================================
-
- -- Id: C.19
- function ">=" (L, R : STD_LOGIC_VECTOR) return BOOLEAN is
- begin
- return UNSIGNED(L) >= UNSIGNED(R);
- end function ">=";
-
- -- Id: C.21
- function ">=" (L : NATURAL; R : STD_LOGIC_VECTOR) return BOOLEAN is
- begin
- return L >= UNSIGNED(R);
- end function ">=";
-
- -- Id: C.23
- function ">=" (L : STD_LOGIC_VECTOR; R : NATURAL) return BOOLEAN is
- begin
- return UNSIGNED(L) >= R;
- end function ">=";
-
- --============================================================================
-
- -- Id: C.25
- function "=" (L, R : STD_LOGIC_VECTOR) return BOOLEAN is
- begin
- return UNSIGNED(L) = UNSIGNED(R);
- end function "=";
-
- -- Id: C.27
- function "=" (L : NATURAL; R : STD_LOGIC_VECTOR) return BOOLEAN is
- begin
- return L = UNSIGNED(R);
- end function "=";
-
- -- Id: C.29
- function "=" (L : STD_LOGIC_VECTOR; R : NATURAL) return BOOLEAN is
- begin
- return UNSIGNED(L) = R;
- end function "=";
-
- --============================================================================
-
- -- Id: C.31
- function "/=" (L, R : STD_LOGIC_VECTOR) return BOOLEAN is
- begin
- return UNSIGNED(L) /= UNSIGNED(R);
- end function "/=";
-
- -- Id: C.33
- function "/=" (L : NATURAL; R : STD_LOGIC_VECTOR) return BOOLEAN is
- begin
- return L /= UNSIGNED(R);
- end function "/=";
-
- -- Id: C.35
- function "/=" (L : STD_LOGIC_VECTOR; R : NATURAL) return BOOLEAN is
- begin
- return UNSIGNED(L) /= R;
- end function "/=";
-
- --============================================================================
-
- -- Id: C.37
- function MINIMUM (L, R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (MINIMUM(UNSIGNED(L), UNSIGNED(R)));
- end function MINIMUM;
-
- -- Id: C.39
- function MINIMUM (L: NATURAL; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (MINIMUM(L, UNSIGNED(R)));
- end function MINIMUM;
-
- -- Id: C.41
- function MINIMUM (L: STD_LOGIC_VECTOR; R: NATURAL) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (MINIMUM(UNSIGNED(L), R));
- end function MINIMUM;
-
- --============================================================================
- -- Id: C.43
- function MAXIMUM (L, R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (MAXIMUM(UNSIGNED(L), UNSIGNED(R)));
- end function MAXIMUM;
-
- -- Id: C.45
- function MAXIMUM (L: NATURAL; R: STD_LOGIC_VECTOR) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (MAXIMUM(L, UNSIGNED(R)));
- end function MAXIMUM;
-
- -- Id: C.47
- function MAXIMUM (L: STD_LOGIC_VECTOR; R: NATURAL) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (MAXIMUM(UNSIGNED(L), R));
- end function MAXIMUM;
-
- --============================================================================
-
- -- Id: C.49
- function \?>\ (L, R: STD_LOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?>\ (UNSIGNED(L), UNSIGNED(R));
- end function \?>\;
-
- -- Id: C.51
- function \?>\ (L: NATURAL; R: STD_LOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?>\ (L, UNSIGNED(R));
- end function \?>\;
-
- -- Id: C.53
- function \?>\ (L: STD_LOGIC_VECTOR; R: NATURAL) return STD_ULOGIC is
- begin
- return \?>\ (UNSIGNED(L), R);
- end function \?>\;
-
- --============================================================================
-
- -- Id: C.55
- function \?<\ (L, R: STD_LOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?<\ (UNSIGNED(L), UNSIGNED(R));
- end function \?<\;
-
- -- Id: C.57
- function \?<\ (L: NATURAL; R: STD_LOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?<\ (L, UNSIGNED(R));
- end function \?<\;
-
- -- Id: C.59
- function \?<\ (L: STD_LOGIC_VECTOR; R: NATURAL) return STD_ULOGIC is
- begin
- return \?<\ (UNSIGNED(L), R);
- end function \?<\;
-
- --============================================================================
-
- -- Id: C.61
- function \?<=\ (L, R: STD_LOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?<=\ (UNSIGNED(L), UNSIGNED(R));
- end function \?<=\;
-
- -- Id: C.63
- function \?<=\ (L: NATURAL; R: STD_LOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?<=\ (L, UNSIGNED(R));
- end function \?<=\;
-
- -- Id: C.65
- function \?<=\ (L: STD_LOGIC_VECTOR; R: NATURAL) return STD_ULOGIC is
- begin
- return \?<=\ (UNSIGNED(L), R);
- end function \?<=\;
-
- --============================================================================
-
- -- Id: C.67
- function \?>=\ (L, R: STD_LOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?>=\ (UNSIGNED(L), UNSIGNED(R));
- end function \?>=\;
-
- -- Id: C.69
- function \?>=\ (L: NATURAL; R: STD_LOGIC_VECTOR) return STD_ULOGIC is
- begin
- return \?>=\ (L, UNSIGNED(R));
- end function \?>=\;
-
- -- Id: C.71
- function \?>=\ (L: STD_LOGIC_VECTOR; R: NATURAL) return STD_ULOGIC is
- begin
- return \?>=\ (UNSIGNED(L), R);
- end function \?>=\;
-
- --============================================================================
-
- -- Id: C.73
--- function \?=\ (L, R: STD_LOGIC_VECTOR) return STD_ULOGIC is
--- begin
--- return \?=\ (UNSIGNED(L), UNSIGNED(R));
--- end function \?=\;
-
--- -- Id: C.75
--- function \?=\ (L: NATURAL; R: STD_LOGIC_VECTOR) return STD_ULOGIC is
--- begin
--- return \?=\ (L, UNSIGNED(R));
--- end function \?=\;
-
--- -- Id: C.77
--- function \?=\ (L: STD_LOGIC_VECTOR; R: NATURAL) return STD_ULOGIC is
--- begin
--- return \?=\ (UNSIGNED(L), R);
--- end function \?=\;
-
--- --============================================================================
-
--- -- Id: C.79
--- function \?/=\ (L, R: STD_LOGIC_VECTOR) return STD_ULOGIC is
--- begin
--- return \?/=\ (UNSIGNED(L), UNSIGNED(R));
--- end function \?/=\;
-
--- -- Id: C.81
--- function \?/=\ (L: NATURAL; R: STD_LOGIC_VECTOR) return STD_ULOGIC is
--- begin
--- return \?/=\ (L, UNSIGNED(R));
--- end function \?/=\;
-
--- -- Id: C.83
--- function \?/=\ (L: STD_LOGIC_VECTOR; R: NATURAL) return STD_ULOGIC is
--- begin
--- return \?/=\ (UNSIGNED(L), R);
--- end function \?/=\;
-
- --============================================================================
-
- -- Id: S.1
- function SHIFT_LEFT (ARG : STD_LOGIC_VECTOR; COUNT : NATURAL) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (SHIFT_LEFT(unsigned(ARG), COUNT));
- end function SHIFT_LEFT;
-
- -- Id: S.2
- function SHIFT_RIGHT (ARG : STD_LOGIC_VECTOR; COUNT : NATURAL) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (SHIFT_RIGHT(unsigned(ARG), COUNT));
- end function SHIFT_RIGHT;
-
- --============================================================================
-
- -- Id: S.5
- function ROTATE_LEFT (ARG : STD_LOGIC_VECTOR; COUNT : NATURAL) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (ROTATE_LEFT(unsigned(ARG), COUNT));
- end function ROTATE_LEFT;
-
- -- Id: S.6
- function ROTATE_RIGHT (ARG : STD_LOGIC_VECTOR; COUNT : NATURAL) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (ROTATE_RIGHT(unsigned(ARG), COUNT));
- end function ROTATE_RIGHT;
-
- --============================================================================
-
- -- Id: S.17
- function "sla" (ARG: STD_LOGIC_VECTOR; COUNT: INTEGER) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(ARG) sla COUNT);
- end function "sla";
-
- -- Id: S.19
- function "sra" (ARG: STD_LOGIC_VECTOR; COUNT: INTEGER) return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (UNSIGNED(ARG) sra COUNT);
- end function "sra";
-
- --============================================================================
-
- -- Id: R.2
- function RESIZE (ARG : STD_LOGIC_VECTOR; NEW_SIZE : NATURAL)
- return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (
- RESIZE (ARG => UNSIGNED(ARG),
- NEW_SIZE => NEW_SIZE));
- end function RESIZE;
-
- function RESIZE (ARG, SIZE_RES : STD_LOGIC_VECTOR)
- return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (
- RESIZE (ARG => UNSIGNED(ARG),
- NEW_SIZE => SIZE_RES'length));
- end function RESIZE;
- --============================================================================
-
- -- Id: D.1
- function TO_INTEGER (ARG : STD_LOGIC_VECTOR) return NATURAL is
- begin
- return TO_INTEGER(UNSIGNED(ARG));
- end function TO_INTEGER;
-
- --============================================================================
-
- -- function TO_01 is used to convert vectors to the
- -- correct form for exported functions,
- -- and to report if there is an element which
- -- is not in (0, 1, H, L).
-
- -- Id: T.1
- function TO_01 (S : STD_LOGIC_VECTOR; XMAP : STD_ULOGIC := '0')
- return STD_LOGIC_VECTOR is
- begin
- return STD_LOGIC_VECTOR (
- TO_01 (S => UNSIGNED(S),
- XMAP => XMAP));
- end function TO_01;
-
-end package body NUMERIC_STD_UNSIGNED;
|
