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authorTristan Gingold <tgingold@free.fr>2019-06-20 19:02:39 +0200
committerTristan Gingold <tgingold@free.fr>2019-06-20 19:02:39 +0200
commitf7aaec6245aea5a59e33b8e4f3aeb11375ef23b0 (patch)
treeb7d094a130abb421008474bd95d1de270d5131e4 /libraries/openieee/numeric_std.v93
parent34359272ed21fd699a9e277f8282678413904265 (diff)
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openieee: use .vhdl extension
Diffstat (limited to 'libraries/openieee/numeric_std.v93')
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diff --git a/libraries/openieee/numeric_std.v93 b/libraries/openieee/numeric_std.v93
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--- This -*- vhdl -*- file is part of GHDL.
--- IEEE 1076.3 compliant numeric std package.
--- Copyright (C) 2015 Tristan Gingold
---
--- GHDL is free software; you can redistribute it and/or modify it under
--- the terms of the GNU General Public License as published by the Free
--- Software Foundation; either version 2, or (at your option) any later
--- version.
---
--- GHDL is distributed in the hope that it will be useful, but WITHOUT ANY
--- WARRANTY; without even the implied warranty of MERCHANTABILITY or
--- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
--- for more details.
---
--- You should have received a copy of the GNU General Public License
--- along with GCC; see the file COPYING2. If not see
--- <http://www.gnu.org/licenses/>.
-
-library IEEE;
-use IEEE.STD_LOGIC_1164.all;
-
-package NUMERIC_STD is
- type UNSIGNED is array (natural range <>) of STD_LOGIC;
- type SIGNED is array (natural range <>) of STD_LOGIC;
-
- function TO_01 (S : SIGNED; XMAP : STD_LOGIC := '0') return SIGNED;
- function TO_01 (S : UNSIGNED; XMAP : STD_LOGIC := '0') return UNSIGNED;
- -- Convert 'H' and '1' to '1', 'L' and '0' to '0'.
- -- If any other value is present, return (others => XMAP)
- -- Issue a warning in that case, and if S is a null array.
- -- Result index range is S'Length - 1 downto 0.
-
- function std_match (l, r : std_ulogic) return boolean;
- function std_match (l, r : std_ulogic_vector) return boolean;
- function std_match (l, r : std_logic_vector) return boolean;
- function std_match (l, r : UNSIGNED) return boolean;
- function std_match (l, r : SIGNED) return boolean;
- -- Return True iff L and R matches.
-
-
- function TO_INTEGER (ARG : UNSIGNED) return NATURAL;
- function TO_INTEGER (ARG : SIGNED) return INTEGER;
- -- Convert ARG to an integer.
- -- Simulation is aborted in case of overflow.
- -- Issue a warning in case of non-logical value.
-
- function TO_UNSIGNED (ARG, SIZE : NATURAL) return UNSIGNED;
- -- Convert ARG to unsigned.
- -- Result index range is SIZE - 1 downto 0.
- -- Issue a warning if value is truncated.
-
- function TO_SIGNED (ARG : INTEGER; SIZE : NATURAL) return SIGNED;
- -- Convert ARG to signed.
- -- Result index range is SIZE - 1 downto 0.
- -- Issue a warning if value is truncated.
-
- function resize (ARG : UNSIGNED; NEW_SIZE: natural) return UNSIGNED;
- function resize (ARG : SIGNED; NEW_SIZE: natural) return SIGNED;
- -- Result index range is NEW_SIZE - 1 downto 0 (unless null array).
- -- For SIGNED, the sign of the result is the sign of ARG.
-
- function "=" (L, R : UNSIGNED) return BOOLEAN;
- function "=" (L : UNSIGNED; R : NATURAL) return BOOLEAN;
- function "=" (L : NATURAL; R : UNSIGNED) return BOOLEAN;
- function "/=" (L, R : UNSIGNED) return BOOLEAN;
- function "/=" (L : UNSIGNED; R : NATURAL) return BOOLEAN;
- function "/=" (L : NATURAL; R : UNSIGNED) return BOOLEAN;
- function "<" (L, R : UNSIGNED) return BOOLEAN;
- function "<" (L : UNSIGNED; R : NATURAL) return BOOLEAN;
- function "<" (L : NATURAL; R : UNSIGNED) return BOOLEAN;
- function "<=" (L, R : UNSIGNED) return BOOLEAN;
- function "<=" (L : UNSIGNED; R : NATURAL) return BOOLEAN;
- function "<=" (L : NATURAL; R : UNSIGNED) return BOOLEAN;
- function ">" (L, R : UNSIGNED) return BOOLEAN;
- function ">" (L : UNSIGNED; R : NATURAL) return BOOLEAN;
- function ">" (L : NATURAL; R : UNSIGNED) return BOOLEAN;
- function ">=" (L, R : UNSIGNED) return BOOLEAN;
- function ">=" (L : UNSIGNED; R : NATURAL) return BOOLEAN;
- function ">=" (L : NATURAL; R : UNSIGNED) return BOOLEAN;
-
- function "=" (L, R : SIGNED) return BOOLEAN;
- function "=" (L : SIGNED; R : INTEGER) return BOOLEAN;
- function "=" (L : INTEGER; R : SIGNED) return BOOLEAN;
- function "/=" (L, R : SIGNED) return BOOLEAN;
- function "/=" (L : SIGNED; R : INTEGER) return BOOLEAN;
- function "/=" (L : INTEGER; R : SIGNED) return BOOLEAN;
- function "<" (L, R : SIGNED) return BOOLEAN;
- function "<" (L : SIGNED; R : INTEGER) return BOOLEAN;
- function "<" (L : INTEGER; R : SIGNED) return BOOLEAN;
- function "<=" (L, R : SIGNED) return BOOLEAN;
- function "<=" (L : SIGNED; R : INTEGER) return BOOLEAN;
- function "<=" (L : INTEGER; R : SIGNED) return BOOLEAN;
- function ">" (L, R : SIGNED) return BOOLEAN;
- function ">" (L : SIGNED; R : INTEGER) return BOOLEAN;
- function ">" (L : INTEGER; R : SIGNED) return BOOLEAN;
- function ">=" (L, R : SIGNED) return BOOLEAN;
- function ">=" (L : SIGNED; R : INTEGER) return BOOLEAN;
- function ">=" (L : INTEGER; R : SIGNED) return BOOLEAN;
- -- Issue a warning in case of non-logical value.
-
- function "-" (ARG : SIGNED) return SIGNED;
- -- Compute -ARG.
- -- Result index range is Arg'length - 1 downto 0.
-
- function "abs" (ARG : SIGNED) return SIGNED;
- -- Compute abs ARG.
- -- Result index range is Arg'length - 1 downto 0.
-
- function "+" (L, R : UNSIGNED) return UNSIGNED;
- function "+" (L, R : SIGNED) return SIGNED;
- function "-" (L, R : UNSIGNED) return UNSIGNED;
- function "-" (L, R : SIGNED) return SIGNED;
- -- Compute L +/- R.
- -- Result index range is max (L'Length, R'Length) - 1 downto 0.
- -- Issue a warning in case of non-logical value.
-
- function "+" (L : UNSIGNED; R : NATURAL) return UNSIGNED;
- function "+" (L : NATURAL; R : UNSIGNED) return UNSIGNED;
- function "+" (L : SIGNED; R : INTEGER) return SIGNED;
- function "+" (L : INTEGER; R : SIGNED) return SIGNED;
- function "-" (L : UNSIGNED; R : NATURAL) return UNSIGNED;
- function "-" (L : NATURAL; R : UNSIGNED) return UNSIGNED;
- function "-" (L : SIGNED; R : INTEGER) return SIGNED;
- function "-" (L : INTEGER; R : SIGNED) return SIGNED;
- -- Compute L +/- R.
- -- Result index range is V'Length - 1 downto 0, where V is the vector
- -- parameter.
- -- Issue a warning in case of non-logical value.
- -- Issue a warning if value is truncated.
-
- function "*" (L, R : UNSIGNED) return UNSIGNED;
- function "*" (L, R : SIGNED) return SIGNED;
- -- Compute L * R
- -- Result index range is L'Length + R'Length - 1 downto 0.
-
- function "*" (L : UNSIGNED; R : NATURAL) return UNSIGNED;
- function "*" (L : SIGNED; R : INTEGER) return SIGNED;
- -- Compute L * R
- -- R is converted to a vector of length L'length
-
- function "*" (L : NATURAL; R : UNSIGNED) return UNSIGNED;
- function "*" (L : INTEGER; R : SIGNED) return SIGNED;
- -- Compute L * R
- -- L is converted to a vector of length R'length
-
- function "/" (L, R : UNSIGNED) return UNSIGNED;
- function "/" (L, R : SIGNED) return SIGNED;
- function "rem" (L, R : UNSIGNED) return UNSIGNED;
- function "rem" (L, R : SIGNED) return SIGNED;
- function "mod" (L, R : UNSIGNED) return UNSIGNED;
- function "mod" (L, R : SIGNED) return SIGNED;
- -- Compute L op R
- -- Result index range is L'Length - 1 downto 0.
- -- Issue a warning in case of non-logical value.
- -- Issue an error if R is 0.
-
- function "/" (L : UNSIGNED; R : NATURAL) return UNSIGNED;
- function "/" (L : SIGNED; R : INTEGER) return SIGNED;
- function "rem" (L : UNSIGNED; R : NATURAL) return UNSIGNED;
- function "rem" (L : SIGNED; R : INTEGER) return SIGNED;
- function "mod" (L : UNSIGNED; R : NATURAL) return UNSIGNED;
- function "mod" (L : SIGNED; R : INTEGER) return SIGNED;
- -- Compute L op R.
- -- Result index range is L'Length - 1 downto 0.
- -- Issue a warning in case of non-logical value.
- -- Issue an error if R is 0.
-
- function "/" (L : NATURAL; R : UNSIGNED) return UNSIGNED;
- function "/" (L : INTEGER; R : SIGNED) return SIGNED;
- function "rem" (L : NATURAL; R : UNSIGNED) return UNSIGNED;
- function "rem" (L : INTEGER; R : SIGNED) return SIGNED;
- function "mod" (L : NATURAL; R : UNSIGNED) return UNSIGNED;
- function "mod" (L : INTEGER; R : SIGNED) return SIGNED;
- -- Compute L op R.
- -- Result index range is R'Length - 1 downto 0.
- -- Issue a warning in case of non-logical value.
- -- Issue an error if R is 0.
- -- Result may be truncated.
-
- function "not" (l : UNSIGNED) return UNSIGNED;
- function "not" (l : SIGNED) return SIGNED;
- function "and" (l, r : UNSIGNED) return UNSIGNED;
- function "and" (l, r : SIGNED) return SIGNED;
- function "nand" (l, r : UNSIGNED) return UNSIGNED;
- function "nand" (l, r : SIGNED) return SIGNED;
- function "or" (l, r : UNSIGNED) return UNSIGNED;
- function "or" (l, r : SIGNED) return SIGNED;
- function "nor" (l, r : UNSIGNED) return UNSIGNED;
- function "nor" (l, r : SIGNED) return SIGNED;
- function "xor" (l, r : UNSIGNED) return UNSIGNED;
- function "xor" (l, r : SIGNED) return SIGNED;
- function "xnor" (l, r : UNSIGNED) return UNSIGNED;
- function "xnor" (l, r : SIGNED) return SIGNED;
- -- Compute L OP R.
- -- Result index range is L'Length - 1 downto 0.
- -- No specific handling of null array: the index range of the result
- -- would be -1 downto 0 (without warning). This it not what is specified
- -- in 1076.3, but corresponds to the standard implementation.
- -- No specific handling of non-logical values. Behaviour is compatible
- -- with std_logic_1164.
-
- function shift_left (ARG : UNSIGNED; COUNT: NATURAL) return UNSIGNED;
- function shift_left (ARG : SIGNED; COUNT: NATURAL) return SIGNED;
- function shift_right (ARG : UNSIGNED; COUNT: NATURAL) return UNSIGNED;
- function shift_right (ARG : SIGNED; COUNT: NATURAL) return SIGNED;
- -- Result index range is ARG'Length - 1 downto 0.
-
- function rotate_left (ARG : UNSIGNED; COUNT: NATURAL) return UNSIGNED;
- function rotate_left (ARG : SIGNED; COUNT: NATURAL) return SIGNED;
- function rotate_right (ARG : UNSIGNED; COUNT: NATURAL) return UNSIGNED;
- function rotate_right (ARG : SIGNED; COUNT: NATURAL) return SIGNED;
- -- Result index range is ARG'Length - 1 downto 0.
-
- function "sll" (ARG : UNSIGNED; COUNT: INTEGER) return UNSIGNED;
- function "sll" (ARG : SIGNED; COUNT: INTEGER) return SIGNED;
- function "srl" (ARG : UNSIGNED; COUNT: INTEGER) return UNSIGNED;
- function "srl" (ARG : SIGNED; COUNT: INTEGER) return SIGNED;
- -- Result index range is ARG'Length - 1 downto 0.
-
- function "rol" (ARG : UNSIGNED; COUNT: INTEGER) return UNSIGNED;
- function "rol" (ARG : SIGNED; COUNT: INTEGER) return SIGNED;
- function "ror" (ARG : UNSIGNED; COUNT: INTEGER) return UNSIGNED;
- function "ror" (ARG : SIGNED; COUNT: INTEGER) return SIGNED;
- -- Result index range is ARG'Length - 1 downto 0.
-end NUMERIC_STD;