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vhdl/Common/sim/ieee_proposed/modelsim/standard_additions_c.vhdl
T
jens c229af0f71 - added ieee_proposed 
git-svn-id: http://moon:8086/svn/vhdl/trunk@1304 cc03376c-175c-47c8-b038-4cd826a8556b
2015-10-23 04:43:48 +00:00

2074 lines
60 KiB
VHDL
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------------------------------------------------------------------------------
-- "standard_additions" package contains the additions to the built in
-- "standard.std" package. In the final version this package will be implicit.
-- Created for VHDL-200X par, David Bishop (dbishop@vhdl.org)
------------------------------------------------------------------------------
package standard_additions is
function \?=\ (L, R : BOOLEAN) return BOOLEAN;
function \?/=\ (L, R : BOOLEAN) return BOOLEAN;
function \?<\ (L, R : BOOLEAN) return BOOLEAN;
function \?<=\ (L, R : BOOLEAN) return BOOLEAN;
function \?>\ (L, R : BOOLEAN) return BOOLEAN;
function \?>=\ (L, R : BOOLEAN) return BOOLEAN;
function MINIMUM (L, R : BOOLEAN) return BOOLEAN;
function MAXIMUM (L, R : BOOLEAN) return BOOLEAN;
function RISING_EDGE (signal S : BOOLEAN) return BOOLEAN;
function FALLING_EDGE (signal S : BOOLEAN) return BOOLEAN;
function \?=\ (L, R : BIT) return BIT;
function \?/=\ (L, R : BIT) return BIT;
function \?<\ (L, R : BIT) return BIT;
function \?<=\ (L, R : BIT) return BIT;
function \?>\ (L, R : BIT) return BIT;
function \?>=\ (L, R : BIT) return BIT;
function MINIMUM (L, R : BIT) return BIT;
function MAXIMUM (L, R : BIT) return BIT;
function \??\ (L : BIT) return BOOLEAN;
function RISING_EDGE (signal S : BIT) return BOOLEAN;
function FALLING_EDGE (signal S : BIT) return BOOLEAN;
function MINIMUM (L, R : CHARACTER) return CHARACTER;
function MAXIMUM (L, R : CHARACTER) return CHARACTER;
function MINIMUM (L, R : SEVERITY_LEVEL) return SEVERITY_LEVEL;
function MAXIMUM (L, R : SEVERITY_LEVEL) return SEVERITY_LEVEL;
function MINIMUM (L, R : INTEGER) return INTEGER;
function MAXIMUM (L, R : INTEGER) return INTEGER;
function MINIMUM (L, R : REAL) return REAL;
function MAXIMUM (L, R : REAL) return REAL;
function "mod" (L, R : TIME) return TIME;
function "rem" (L, R : TIME) return TIME;
function MINIMUM (L, R : TIME) return TIME;
function MAXIMUM (L, R : TIME) return TIME;
function MINIMUM (L, R : STRING) return STRING;
function MAXIMUM (L, R : STRING) return STRING;
function MINIMUM (L : STRING) return CHARACTER;
function MAXIMUM (L : STRING) return CHARACTER;
type BOOLEAN_VECTOR is array (NATURAL range <>) of BOOLEAN;
-- The predefined operations for this type are as follows:
function "and" (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR;
function "or" (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR;
function "nand" (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR;
function "nor" (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR;
function "xor" (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR;
function "xnor" (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR;
function "not" (L : BOOLEAN_VECTOR) return BOOLEAN_VECTOR;
function "and" (L : BOOLEAN_VECTOR; R : BOOLEAN)
return BOOLEAN_VECTOR;
function "and" (L : BOOLEAN; R : BOOLEAN_VECTOR)
return BOOLEAN_VECTOR;
function "or" (L : BOOLEAN_VECTOR; R : BOOLEAN)
return BOOLEAN_VECTOR;
function "or" (L : BOOLEAN; R : BOOLEAN_VECTOR)
return BOOLEAN_VECTOR;
function "nand" (L : BOOLEAN_VECTOR; R : BOOLEAN)
return BOOLEAN_VECTOR;
function "nand" (L : BOOLEAN; R : BOOLEAN_VECTOR)
return BOOLEAN_VECTOR;
function "nor" (L : BOOLEAN_VECTOR; R : BOOLEAN)
return BOOLEAN_VECTOR;
function "nor" (L : BOOLEAN; R : BOOLEAN_VECTOR)
return BOOLEAN_VECTOR;
function "xor" (L : BOOLEAN_VECTOR; R : BOOLEAN)
return BOOLEAN_VECTOR;
function "xor" (L : BOOLEAN; R : BOOLEAN_VECTOR)
return BOOLEAN_VECTOR;
function "xnor" (L : BOOLEAN_VECTOR; R : BOOLEAN)
return BOOLEAN_VECTOR;
function "xnor" (L : BOOLEAN; R : BOOLEAN_VECTOR)
return BOOLEAN_VECTOR;
function and_reduce (L : BOOLEAN_VECTOR) return BOOLEAN;
function or_reduce (L : BOOLEAN_VECTOR) return BOOLEAN;
function nand_reduce (L : BOOLEAN_VECTOR) return BOOLEAN;
function nor_reduce (L : BOOLEAN_VECTOR) return BOOLEAN;
function xor_reduce (L : BOOLEAN_VECTOR) return BOOLEAN;
function xnor_reduce (L : BOOLEAN_VECTOR) return BOOLEAN;
function "sll" (L : BOOLEAN_VECTOR; R : INTEGER)
return BOOLEAN_VECTOR;
function "srl" (L : BOOLEAN_VECTOR; R : INTEGER)
return BOOLEAN_VECTOR;
function "sla" (L : BOOLEAN_VECTOR; R : INTEGER)
return BOOLEAN_VECTOR;
function "sra" (L : BOOLEAN_VECTOR; R : INTEGER)
return BOOLEAN_VECTOR;
function "rol" (L : BOOLEAN_VECTOR; R : INTEGER)
return BOOLEAN_VECTOR;
function "ror" (L : BOOLEAN_VECTOR; R : INTEGER)
return BOOLEAN_VECTOR;
-- function "=" (L, R : BOOLEAN_VECTOR) return BOOLEAN;
-- function "/=" (L, R : BOOLEAN_VECTOR) return BOOLEAN;
-- function "<" (L, R : BOOLEAN_VECTOR) return BOOLEAN;
-- function "<=" (L, R : BOOLEAN_VECTOR) return BOOLEAN;
-- function ">" (L, R : BOOLEAN_VECTOR) return BOOLEAN;
-- function ">=" (L, R : BOOLEAN_VECTOR) return BOOLEAN;
function \?=\ (L, R : BOOLEAN_VECTOR) return BOOLEAN;
function \?/=\ (L, R : BOOLEAN_VECTOR) return BOOLEAN;
-- function "&" (L : BOOLEAN_VECTOR; R : BOOLEAN_VECTOR)
-- return BOOLEAN_VECTOR;
-- function "&" (L : BOOLEAN_VECTOR; R : BOOLEAN) -- return BOOLEAN_VECTOR;
-- function "&" (L : BOOLEAN; R : BOOLEAN_VECTOR) -- return BOOLEAN_VECTOR;
-- function "&" (L : BOOLEAN; R : BOOLEAN) -- return BOOLEAN_VECTOR;
function MINIMUM (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR;
function MAXIMUM (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR;
function MINIMUM (L : BOOLEAN_VECTOR) return BOOLEAN;
function MAXIMUM (L : BOOLEAN_VECTOR) return BOOLEAN;
function "and" (L : BIT_VECTOR; R : BIT) return BIT_VECTOR;
function "and" (L : BIT; R : BIT_VECTOR) return BIT_VECTOR;
function "or" (L : BIT_VECTOR; R : BIT) return BIT_VECTOR;
function "or" (L : BIT; R : BIT_VECTOR) return BIT_VECTOR;
function "nand" (L : BIT_VECTOR; R : BIT) return BIT_VECTOR;
function "nand" (L : BIT; R : BIT_VECTOR) return BIT_VECTOR;
function "nor" (L : BIT_VECTOR; R : BIT) return BIT_VECTOR;
function "nor" (L : BIT; R : BIT_VECTOR) return BIT_VECTOR;
function "xor" (L : BIT_VECTOR; R : BIT) return BIT_VECTOR;
function "xor" (L : BIT; R : BIT_VECTOR) return BIT_VECTOR;
function "xnor" (L : BIT_VECTOR; R : BIT) return BIT_VECTOR;
function "xnor" (L : BIT; R : BIT_VECTOR) return BIT_VECTOR;
function and_reduce (L : BIT_VECTOR) return BIT;
function or_reduce (L : BIT_VECTOR) return BIT;
function nand_reduce (L : BIT_VECTOR) return BIT;
function nor_reduce (L : BIT_VECTOR) return BIT;
function xor_reduce (L : BIT_VECTOR) return BIT;
function xnor_reduce (L : BIT_VECTOR) return BIT;
function \?=\ (L, R : BIT_VECTOR) return BIT;
function \?/=\ (L, R : BIT_VECTOR) return BIT;
function MINIMUM (L, R : BIT_VECTOR) return BIT_VECTOR;
function MAXIMUM (L, R : BIT_VECTOR) return BIT_VECTOR;
function MINIMUM (L : BIT_VECTOR) return BIT;
function MAXIMUM (L : BIT_VECTOR) return BIT;
function TO_STRING (VALUE : BIT_VECTOR) return STRING;
alias TO_BSTRING is TO_STRING [BIT_VECTOR return STRING];
alias TO_BINARY_STRING is TO_STRING [BIT_VECTOR return STRING];
function TO_OSTRING (VALUE : BIT_VECTOR) return STRING;
alias TO_OCTAL_STRING is TO_OSTRING [BIT_VECTOR return STRING];
function TO_HSTRING (VALUE : BIT_VECTOR) return STRING;
alias TO_HEX_STRING is TO_HSTRING [BIT_VECTOR return STRING];
type INTEGER_VECTOR is array (NATURAL range <>) of INTEGER;
-- The predefined operations for this type are as follows:
function "=" (L, R : INTEGER_VECTOR) return BOOLEAN;
function "/=" (L, R : INTEGER_VECTOR) return BOOLEAN;
function "<" (L, R : INTEGER_VECTOR) return BOOLEAN;
function "<=" (L, R : INTEGER_VECTOR) return BOOLEAN;
function ">" (L, R : INTEGER_VECTOR) return BOOLEAN;
function ">=" (L, R : INTEGER_VECTOR) return BOOLEAN;
-- function "&" (L : INTEGER_VECTOR; R : INTEGER_VECTOR)
-- return INTEGER_VECTOR;
-- function "&" (L : INTEGER_VECTOR; R : INTEGER) return INTEGER_VECTOR;
-- function "&" (L : INTEGER; R : INTEGER_VECTOR) return INTEGER_VECTOR;
-- function "&" (L : INTEGER; R : INTEGER) return INTEGER_VECTOR;
function MINIMUM (L, R : INTEGER_VECTOR) return INTEGER_VECTOR;
function MAXIMUM (L, R : INTEGER_VECTOR) return INTEGER_VECTOR;
function MINIMUM (L : INTEGER_VECTOR) return INTEGER;
function MAXIMUM (L : INTEGER_VECTOR) return INTEGER;
type REAL_VECTOR is array (NATURAL range <>) of REAL;
-- The predefined operations for this type are as follows:
function "=" (L, R : REAL_VECTOR) return BOOLEAN;
function "/=" (L, R : REAL_VECTOR) return BOOLEAN;
function "<" (L, R : REAL_VECTOR) return BOOLEAN;
function "<=" (L, R : REAL_VECTOR) return BOOLEAN;
function ">" (L, R : REAL_VECTOR) return BOOLEAN;
function ">=" (L, R : REAL_VECTOR) return BOOLEAN;
-- function "&" (L : REAL_VECTOR; R : REAL_VECTOR)
-- return REAL_VECTOR;
-- function "&" (L : REAL_VECTOR; R : REAL) return REAL_VECTOR;
-- function "&" (L : REAL; R : REAL_VECTOR) return REAL_VECTOR;
-- function "&" (L : REAL; R : REAL) return REAL_VECTOR;
function MINIMUM (L, R : REAL_VECTOR) return REAL_VECTOR;
function MAXIMUM (L, R : REAL_VECTOR) return REAL_VECTOR;
function MINIMUM (L : REAL_VECTOR) return REAL;
function MAXIMUM (L : REAL_VECTOR) return REAL;
type TIME_VECTOR is array (NATURAL range <>) of TIME;
-- The predefined operations for this type are as follows:
function "=" (L, R : TIME_VECTOR) return BOOLEAN;
function "/=" (L, R : TIME_VECTOR) return BOOLEAN;
function "<" (L, R : TIME_VECTOR) return BOOLEAN;
function "<=" (L, R : TIME_VECTOR) return BOOLEAN;
function ">" (L, R : TIME_VECTOR) return BOOLEAN;
function ">=" (L, R : TIME_VECTOR) return BOOLEAN;
-- function "&" (L : TIME_VECTOR; R : TIME_VECTOR)
-- return TIME_VECTOR;
-- function "&" (L : TIME_VECTOR; R : TIME) return TIME_VECTOR;
-- function "&" (L : TIME; R : TIME_VECTOR) return TIME_VECTOR;
-- function "&" (L : TIME; R : TIME) return TIME_VECTOR;
function MINIMUM (L, R : TIME_VECTOR) return TIME_VECTOR;
function MAXIMUM (L, R : TIME_VECTOR) return TIME_VECTOR;
function MINIMUM (L : TIME_VECTOR) return TIME;
function MAXIMUM (L : TIME_VECTOR) return TIME;
function MINIMUM (L, R : FILE_OPEN_KIND) return FILE_OPEN_KIND;
function MAXIMUM (L, R : FILE_OPEN_KIND) return FILE_OPEN_KIND;
function MINIMUM (L, R : FILE_OPEN_STATUS) return FILE_OPEN_STATUS;
function MAXIMUM (L, R : FILE_OPEN_STATUS) return FILE_OPEN_STATUS;
-- predefined TO_STRING operations on scalar types
function TO_STRING (VALUE : BOOLEAN) return STRING;
function TO_STRING (VALUE : BIT) return STRING;
function TO_STRING (VALUE : CHARACTER) return STRING;
function TO_STRING (VALUE : SEVERITY_LEVEL) return STRING;
function TO_STRING (VALUE : INTEGER) return STRING;
function TO_STRING (VALUE : REAL) return STRING;
function TO_STRING (VALUE : TIME) return STRING;
function TO_STRING (VALUE : FILE_OPEN_KIND) return STRING;
function TO_STRING (VALUE : FILE_OPEN_STATUS) return STRING;
-- predefined overloaded TO_STRING operations
function TO_STRING (VALUE : REAL; DIGITS : NATURAL) return STRING;
function TO_STRING (VALUE : REAL; FORMAT : STRING) return STRING;
function TO_STRING (VALUE : TIME; UNIT : TIME) return STRING;
end package standard_additions;
------------------------------------------------------------------------------
-- "standard_additions" package contains the additions to the built in
-- "standard.std" package. In the final version this package will be implicit.
-- Created for VHDL-200X par, David Bishop (dbishop@vhdl.org)
------------------------------------------------------------------------------
use std.textio.all;
package body standard_additions is
function \?=\ (L, R : BOOLEAN) return BOOLEAN is
begin
return L = R;
end function \?=\;
function \?/=\ (L, R : BOOLEAN) return BOOLEAN is
begin
return L /= R;
end function \?/=\;
function \?<\ (L, R : BOOLEAN) return BOOLEAN is
begin
return L < R;
end function \?<\;
function \?<=\ (L, R : BOOLEAN) return BOOLEAN is
begin
return L <= R;
end function \?<=\;
function \?>\ (L, R : BOOLEAN) return BOOLEAN is
begin
return L > R;
end function \?>\;
function \?>=\ (L, R : BOOLEAN) return BOOLEAN is
begin
return L >= R;
end function \?>=\;
function MINIMUM (L, R : BOOLEAN) return BOOLEAN is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : BOOLEAN) return BOOLEAN is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function TO_STRING (VALUE : BOOLEAN) return STRING is
begin
return BOOLEAN'image(VALUE);
end function TO_STRING;
function RISING_EDGE (signal S : BOOLEAN) return BOOLEAN is
begin
return (s'event and (s = true) and (s'last_value = false));
end function rising_edge;
function FALLING_EDGE (signal S : BOOLEAN) return BOOLEAN is
begin
return (s'event and (s = false) and (s'last_value = true));
end function falling_edge;
function \?=\ (L, R : BIT) return BIT is
begin
if L = R then
return '1';
else
return '0';
end if;
end function \?=\;
function \?/=\ (L, R : BIT) return BIT is
begin
if L /= R then
return '1';
else
return '0';
end if;
end function \?/=\;
function \?<\ (L, R : BIT) return BIT is
begin
if L < R then
return '1';
else
return '0';
end if;
end function \?<\;
function \?<=\ (L, R : BIT) return BIT is
begin
if L <= R then
return '1';
else
return '0';
end if;
end function \?<=\;
function \?>\ (L, R : BIT) return BIT is
begin
if L > R then
return '1';
else
return '0';
end if;
end function \?>\;
function \?>=\ (L, R : BIT) return BIT is
begin
if L >= R then
return '1';
else
return '0';
end if;
end function \?>=\;
function MINIMUM (L, R : BIT) return BIT is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : BIT) return BIT is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function TO_STRING (VALUE : BIT) return STRING is
begin
if VALUE = '1' then
return "1";
else
return "0";
end if;
end function TO_STRING;
function \??\ (L : BIT) return BOOLEAN is
begin
return L = '1';
end function \??\;
function RISING_EDGE (signal S : BIT) return BOOLEAN is
begin
return (s'event and (s = '1') and (s'last_value = '0'));
end function rising_edge;
function FALLING_EDGE (signal S : BIT) return BOOLEAN is
begin
return (s'event and (s = '0') and (s'last_value = '1'));
end function falling_edge;
function MINIMUM (L, R : CHARACTER) return CHARACTER is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : CHARACTER) return CHARACTER is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function TO_STRING (VALUE : CHARACTER) return STRING is
variable result : STRING (1 to 1);
begin
result (1) := VALUE;
return result;
end function TO_STRING;
function MINIMUM (L, R : SEVERITY_LEVEL) return SEVERITY_LEVEL is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : SEVERITY_LEVEL) return SEVERITY_LEVEL is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function TO_STRING (VALUE : SEVERITY_LEVEL) return STRING is
begin
return SEVERITY_LEVEL'image(VALUE);
end function TO_STRING;
function MINIMUM (L, R : INTEGER) return INTEGER is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : INTEGER) return INTEGER is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function TO_STRING (VALUE : INTEGER) return STRING is
begin
return INTEGER'image(VALUE);
end function TO_STRING;
function MINIMUM (L, R : REAL) return REAL is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : REAL) return REAL is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function TO_STRING (VALUE : REAL) return STRING is
begin
return REAL'image (VALUE);
end function TO_STRING;
function TO_STRING (VALUE : REAL; DIGITS : NATURAL) return STRING is
begin
return to_string (VALUE, "%1." & INTEGER'image(DIGITS) & "f");
end function TO_STRING;
function "mod" (L, R : TIME) return TIME is
variable lint, rint : INTEGER;
begin
lint := L / 1.0 ns;
rint := R / 1.0 ns;
return (lint mod rint) * 1.0 ns;
end function "mod";
function "rem" (L, R : TIME) return TIME is
variable lint, rint : INTEGER;
begin
lint := L / 1.0 ns;
rint := R / 1.0 ns;
return (lint rem rint) * 1.0 ns;
end function "rem";
function MINIMUM (L, R : TIME) return TIME is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : TIME) return TIME is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function TO_STRING (VALUE : TIME) return STRING is
begin
return TIME'image (VALUE);
end function TO_STRING;
function MINIMUM (L, R : STRING) return STRING is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : STRING) return STRING is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function MINIMUM (L : STRING) return CHARACTER is
variable result : CHARACTER := CHARACTER'high;
begin
for i in l'range loop
result := minimum (l(i), result);
end loop;
return result;
end function MINIMUM;
function MAXIMUM (L : STRING) return CHARACTER is
variable result : CHARACTER := CHARACTER'low;
begin
for i in l'range loop
result := maximum (l(i), result);
end loop;
return result;
end function MAXIMUM;
-- type BOOLEAN_VECTOR is array (NATURAL range <>) of BOOLEAN;
-- The predefined operations for this type are as follows:
function "and" (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
alias rv : BOOLEAN_VECTOR (1 to r'length) is r;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
if (l'length /= r'length) then
assert false
report "STD.""and"": "
& "arguments of overloaded 'and' operator are not of the same length"
severity failure;
else
for i in result'range loop
result(i) := (lv(i) and rv(i));
end loop;
end if;
return result;
end function "and";
function "or" (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
alias rv : BOOLEAN_VECTOR (1 to r'length) is r;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
if (l'length /= r'length) then
assert false
report "STD.""or"": "
& "arguments of overloaded 'or' operator are not of the same length"
severity failure;
else
for i in result'range loop
result(i) := (lv(i) or rv(i));
end loop;
end if;
return result;
end function "or";
function "nand" (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
alias rv : BOOLEAN_VECTOR (1 to r'length) is r;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
if (l'length /= r'length) then
assert false
report "STD.""nand"": "
& "arguments of overloaded 'nand' operator are not of the same length"
severity failure;
else
for i in result'range loop
result(i) := (lv(i) nand rv(i));
end loop;
end if;
return result;
end function "nand";
function "nor" (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
alias rv : BOOLEAN_VECTOR (1 to r'length) is r;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
if (l'length /= r'length) then
assert false
report "STD.""nor"": "
& "arguments of overloaded 'nor' operator are not of the same length"
severity failure;
else
for i in result'range loop
result(i) := (lv(i) nor rv(i));
end loop;
end if;
return result;
end function "nor";
function "xor" (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
alias rv : BOOLEAN_VECTOR (1 to r'length) is r;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
if (l'length /= r'length) then
assert false
report "STD.""xor"": "
& "arguments of overloaded 'xor' operator are not of the same length"
severity failure;
else
for i in result'range loop
result(i) := (lv(i) xor rv(i));
end loop;
end if;
return result;
end function "xor";
function "xnor" (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
alias rv : BOOLEAN_VECTOR (1 to r'length) is r;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
if (l'length /= r'length) then
assert false
report "STD.""xnor"": "
& "arguments of overloaded 'xnor' operator are not of the same length"
severity failure;
else
for i in result'range loop
result(i) := (lv(i) xnor rv(i));
end loop;
end if;
return result;
end function "xnor";
function "not" (L : BOOLEAN_VECTOR) return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
for i in result'range loop
result(i) := not (lv(i));
end loop;
return result;
end function "not";
function "and" (L : BOOLEAN_VECTOR; R : BOOLEAN)
return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
for i in result'range loop
result(i) := lv(i) and r;
end loop;
return result;
end function "and";
function "and" (L : BOOLEAN; R : BOOLEAN_VECTOR)
return BOOLEAN_VECTOR is
alias rv : BOOLEAN_VECTOR (1 to r'length) is r;
variable result : BOOLEAN_VECTOR (1 to r'length);
begin
for i in result'range loop
result(i) := l and rv(i);
end loop;
return result;
end function "and";
function "or" (L : BOOLEAN_VECTOR; R : BOOLEAN)
return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
for i in result'range loop
result(i) := lv(i) or r;
end loop;
return result;
end function "or";
function "or" (L : BOOLEAN; R : BOOLEAN_VECTOR)
return BOOLEAN_VECTOR is
alias rv : BOOLEAN_VECTOR (1 to r'length) is r;
variable result : BOOLEAN_VECTOR (1 to r'length);
begin
for i in result'range loop
result(i) := l or rv(i);
end loop;
return result;
end function "or";
function "nand" (L : BOOLEAN_VECTOR; R : BOOLEAN)
return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
for i in result'range loop
result(i) := lv(i) nand r;
end loop;
return result;
end function "nand";
function "nand" (L : BOOLEAN; R : BOOLEAN_VECTOR)
return BOOLEAN_VECTOR is
alias rv : BOOLEAN_VECTOR (1 to r'length) is r;
variable result : BOOLEAN_VECTOR (1 to r'length);
begin
for i in result'range loop
result(i) := l nand rv(i);
end loop;
return result;
end function "nand";
function "nor" (L : BOOLEAN_VECTOR; R : BOOLEAN)
return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
for i in result'range loop
result(i) := lv(i) nor r;
end loop;
return result;
end function "nor";
function "nor" (L : BOOLEAN; R : BOOLEAN_VECTOR)
return BOOLEAN_VECTOR is
alias rv : BOOLEAN_VECTOR (1 to r'length) is r;
variable result : BOOLEAN_VECTOR (1 to r'length);
begin
for i in result'range loop
result(i) := l nor rv(i);
end loop;
return result;
end function "nor";
function "xor" (L : BOOLEAN_VECTOR; R : BOOLEAN)
return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
for i in result'range loop
result(i) := lv(i) xor r;
end loop;
return result;
end function "xor";
function "xor" (L : BOOLEAN; R : BOOLEAN_VECTOR)
return BOOLEAN_VECTOR is
alias rv : BOOLEAN_VECTOR (1 to r'length) is r;
variable result : BOOLEAN_VECTOR (1 to r'length);
begin
for i in result'range loop
result(i) := l xor rv(i);
end loop;
return result;
end function "xor";
function "xnor" (L : BOOLEAN_VECTOR; R : BOOLEAN)
return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
for i in result'range loop
result(i) := lv(i) xnor r;
end loop;
return result;
end function "xnor";
function "xnor" (L : BOOLEAN; R : BOOLEAN_VECTOR)
return BOOLEAN_VECTOR is
alias rv : BOOLEAN_VECTOR (1 to r'length) is r;
variable result : BOOLEAN_VECTOR (1 to r'length);
begin
for i in result'range loop
result(i) := l xnor rv(i);
end loop;
return result;
end function "xnor";
function and_reduce (L : BOOLEAN_VECTOR) return BOOLEAN is
variable result : BOOLEAN := true;
begin
for i in l'reverse_range loop
result := l(i) and result;
end loop;
return result;
end function and_reduce;
function or_reduce (L : BOOLEAN_VECTOR) return BOOLEAN is
variable result : BOOLEAN := false;
begin
for i in l'reverse_range loop
result := l(i) or result;
end loop;
return result;
end function or_reduce;
function nand_reduce (L : BOOLEAN_VECTOR) return BOOLEAN is
variable result : BOOLEAN := true;
begin
for i in l'reverse_range loop
result := l(i) and result;
end loop;
return not result;
end function nand_reduce;
function nor_reduce (L : BOOLEAN_VECTOR) return BOOLEAN is
variable result : BOOLEAN := false;
begin
for i in l'reverse_range loop
result := l(i) or result;
end loop;
return not result;
end function nor_reduce;
function xor_reduce (L : BOOLEAN_VECTOR) return BOOLEAN is
variable result : BOOLEAN := false;
begin
for i in l'reverse_range loop
result := l(i) xor result;
end loop;
return result;
end function xor_reduce;
function xnor_reduce (L : BOOLEAN_VECTOR) return BOOLEAN is
variable result : BOOLEAN := false;
begin
for i in l'reverse_range loop
result := l(i) xor result;
end loop;
return not result;
end function xnor_reduce;
function "sll" (L : BOOLEAN_VECTOR; R : INTEGER)
return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
if r >= 0 then
result(1 to l'length - r) := lv(r + 1 to l'length);
else
result := l srl -r;
end if;
return result;
end function "sll";
function "srl" (L : BOOLEAN_VECTOR; R : INTEGER)
return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
if r >= 0 then
result(r + 1 to l'length) := lv(1 to l'length - r);
else
result := l sll -r;
end if;
return result;
end function "srl";
function "sla" (L : BOOLEAN_VECTOR; R : INTEGER)
return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
for i in L'range loop
result (i) := L(L'high);
end loop;
if r >= 0 then
result(1 to l'length - r) := lv(r + 1 to l'length);
else
result := l sra -r;
end if;
return result;
end function "sla";
function "sra" (L : BOOLEAN_VECTOR; R : INTEGER)
return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
variable result : BOOLEAN_VECTOR (1 to l'length);
begin
for i in L'range loop
result (i) := L(L'low);
end loop;
if r >= 0 then
result(1 to l'length - r) := lv(r + 1 to l'length);
else
result := l sra -r;
end if;
return result;
end function "sra";
function "rol" (L : BOOLEAN_VECTOR; R : INTEGER)
return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
variable result : BOOLEAN_VECTOR (1 to l'length);
constant rm : INTEGER := r mod l'length;
begin
if r >= 0 then
result(1 to l'length - rm) := lv(rm + 1 to l'length);
result(l'length - rm + 1 to l'length) := lv(1 to rm);
else
result := l ror -r;
end if;
return result;
end function "rol";
function "ror" (L : BOOLEAN_VECTOR; R : INTEGER)
return BOOLEAN_VECTOR is
alias lv : BOOLEAN_VECTOR (1 to l'length) is l;
variable result : BOOLEAN_VECTOR (1 to l'length);
constant rm : INTEGER := r mod l'length;
begin
if r >= 0 then
result(rm + 1 to l'length) := lv(1 to l'length - rm);
result(1 to rm) := lv(l'length - rm + 1 to l'length);
else
result := l rol -r;
end if;
return result;
end function "ror";
-- function "=" (L, R: BOOLEAN_VECTOR) return BOOLEAN;
-- function "/=" (L, R: BOOLEAN_VECTOR) return BOOLEAN;
-- function "<" (L, R: BOOLEAN_VECTOR) return BOOLEAN;
-- function "<=" (L, R: BOOLEAN_VECTOR) return BOOLEAN;
-- function ">" (L, R: BOOLEAN_VECTOR) return BOOLEAN;
-- function ">=" (L, R: BOOLEAN_VECTOR) return BOOLEAN;
function \?=\ (L, R : BOOLEAN_VECTOR) return BOOLEAN is
begin
return L = R;
end function \?=\;
function \?/=\ (L, R : BOOLEAN_VECTOR) return BOOLEAN is
begin
return L /= R;
end function \?/=\;
-- function "&" (L: BOOLEAN_VECTOR; R: BOOLEAN_VECTOR)
-- return BOOLEAN_VECTOR;
-- function "&" (L: BOOLEAN_VECTOR; R: BOOLEAN) return BOOLEAN_VECTOR;
-- function "&" (L: BOOLEAN; R: BOOLEAN_VECTOR) return BOOLEAN_VECTOR;
-- function "&" (L: BOOLEAN; R: BOOLEAN) return BOOLEAN_VECTOR;
function MINIMUM (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : BOOLEAN_VECTOR) return BOOLEAN_VECTOR is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function MINIMUM (L : BOOLEAN_VECTOR) return BOOLEAN is
variable result : BOOLEAN := BOOLEAN'high;
begin
for i in l'range loop
result := minimum (l(i), result);
end loop;
return result;
end function MINIMUM;
function MAXIMUM (L : BOOLEAN_VECTOR) return BOOLEAN is
variable result : BOOLEAN := BOOLEAN'low;
begin
for i in l'range loop
result := maximum (l(i), result);
end loop;
return result;
end function MAXIMUM;
function "and" (L : BIT_VECTOR; R : BIT) return BIT_VECTOR is
alias lv : BIT_VECTOR (1 to l'length) is l;
variable result : BIT_VECTOR (1 to l'length);
begin
for i in result'range loop
result(i) := lv(i) and r;
end loop;
return result;
end function "and";
function "and" (L : BIT; R : BIT_VECTOR) return BIT_VECTOR is
alias rv : BIT_VECTOR (1 to r'length) is r;
variable result : BIT_VECTOR (1 to r'length);
begin
for i in result'range loop
result(i) := l and rv(i);
end loop;
return result;
end function "and";
function "or" (L : BIT_VECTOR; R : BIT) return BIT_VECTOR is
alias lv : BIT_VECTOR (1 to l'length) is l;
variable result : BIT_VECTOR (1 to l'length);
begin
for i in result'range loop
result(i) := lv(i) or r;
end loop;
return result;
end function "or";
function "or" (L : BIT; R : BIT_VECTOR) return BIT_VECTOR is
alias rv : BIT_VECTOR (1 to r'length) is r;
variable result : BIT_VECTOR (1 to r'length);
begin
for i in result'range loop
result(i) := l or rv(i);
end loop;
return result;
end function "or";
function "nand" (L : BIT_VECTOR; R : BIT) return BIT_VECTOR is
alias lv : BIT_VECTOR (1 to l'length) is l;
variable result : BIT_VECTOR (1 to l'length);
begin
for i in result'range loop
result(i) := lv(i) and r;
end loop;
return not result;
end function "nand";
function "nand" (L : BIT; R : BIT_VECTOR) return BIT_VECTOR is
alias rv : BIT_VECTOR (1 to r'length) is r;
variable result : BIT_VECTOR (1 to r'length);
begin
for i in result'range loop
result(i) := l and rv(i);
end loop;
return not result;
end function "nand";
function "nor" (L : BIT_VECTOR; R : BIT) return BIT_VECTOR is
alias lv : BIT_VECTOR (1 to l'length) is l;
variable result : BIT_VECTOR (1 to l'length);
begin
for i in result'range loop
result(i) := lv(i) or r;
end loop;
return not result;
end function "nor";
function "nor" (L : BIT; R : BIT_VECTOR) return BIT_VECTOR is
alias rv : BIT_VECTOR (1 to r'length) is r;
variable result : BIT_VECTOR (1 to r'length);
begin
for i in result'range loop
result(i) := l or rv(i);
end loop;
return not result;
end function "nor";
function "xor" (L : BIT_VECTOR; R : BIT) return BIT_VECTOR is
alias lv : BIT_VECTOR (1 to l'length) is l;
variable result : BIT_VECTOR (1 to l'length);
begin
for i in result'range loop
result(i) := lv(i) xor r;
end loop;
return result;
end function "xor";
function "xor" (L : BIT; R : BIT_VECTOR) return BIT_VECTOR is
alias rv : BIT_VECTOR (1 to r'length) is r;
variable result : BIT_VECTOR (1 to r'length);
begin
for i in result'range loop
result(i) := l xor rv(i);
end loop;
return result;
end function "xor";
function "xnor" (L : BIT_VECTOR; R : BIT) return BIT_VECTOR is
alias lv : BIT_VECTOR (1 to l'length) is l;
variable result : BIT_VECTOR (1 to l'length);
begin
for i in result'range loop
result(i) := lv(i) xor r;
end loop;
return not result;
end function "xnor";
function "xnor" (L : BIT; R : BIT_VECTOR) return BIT_VECTOR is
alias rv : BIT_VECTOR (1 to r'length) is r;
variable result : BIT_VECTOR (1 to r'length);
begin
for i in result'range loop
result(i) := l xor rv(i);
end loop;
return not result;
end function "xnor";
function and_reduce (L : BIT_VECTOR) return BIT is
variable result : BIT := '1';
begin
for i in l'reverse_range loop
result := l(i) and result;
end loop;
return result;
end function and_reduce;
function or_reduce (L : BIT_VECTOR) return BIT is
variable result : BIT := '0';
begin
for i in l'reverse_range loop
result := l(i) or result;
end loop;
return result;
end function or_reduce;
function nand_reduce (L : BIT_VECTOR) return BIT is
variable result : BIT := '1';
begin
for i in l'reverse_range loop
result := l(i) and result;
end loop;
return not result;
end function nand_reduce;
function nor_reduce (L : BIT_VECTOR) return BIT is
variable result : BIT := '0';
begin
for i in l'reverse_range loop
result := l(i) or result;
end loop;
return not result;
end function nor_reduce;
function xor_reduce (L : BIT_VECTOR) return BIT is
variable result : BIT := '0';
begin
for i in l'reverse_range loop
result := l(i) xor result;
end loop;
return result;
end function xor_reduce;
function xnor_reduce (L : BIT_VECTOR) return BIT is
variable result : BIT := '0';
begin
for i in l'reverse_range loop
result := l(i) xor result;
end loop;
return not result;
end function xnor_reduce;
function \?=\ (L, R : BIT_VECTOR) return BIT is
begin
if L = R then
return '1';
else
return '0';
end if;
end function \?=\;
function \?/=\ (L, R : BIT_VECTOR) return BIT is
begin
if L /= R then
return '1';
else
return '0';
end if;
end function \?/=\;
function MINIMUM (L, R : BIT_VECTOR) return BIT_VECTOR is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : BIT_VECTOR) return BIT_VECTOR is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function MINIMUM (L : BIT_VECTOR) return BIT is
variable result : BIT := BIT'high;
begin
for i in l'range loop
result := minimum (l(i), result);
end loop;
return result;
end function MINIMUM;
function MAXIMUM (L : BIT_VECTOR) return BIT is
variable result : BIT := BIT'low;
begin
for i in l'range loop
result := maximum (l(i), result);
end loop;
return result;
end function MAXIMUM;
function TO_STRING (VALUE : BIT_VECTOR) return STRING is
alias ivalue : BIT_VECTOR(1 to value'length) is value;
variable result : STRING(1 to value'length);
begin
if value'length < 1 then
return "";
else
for i in ivalue'range loop
if iValue(i) = '0' then
result(i) := '0';
else
result(i) := '1';
end if;
end loop;
return result;
end if;
end function to_string;
-- alias TO_BSTRING is TO_STRING [BIT_VECTOR return STRING];
-- alias TO_BINARY_STRING is TO_STRING [BIT_VECTOR return STRING];
function TO_OSTRING (VALUE : BIT_VECTOR) return STRING is
constant ne : INTEGER := (value'length+2)/3;
constant pad : BIT_VECTOR(0 to (ne*3 - value'length) - 1) := (others => '0');
variable ivalue : BIT_VECTOR(0 to ne*3 - 1);
variable result : STRING(1 to ne);
variable tri : BIT_VECTOR(0 to 2);
begin
if value'length < 1 then
return "";
end if;
ivalue := pad & value;
for i in 0 to ne-1 loop
tri := ivalue(3*i to 3*i+2);
case tri is
when o"0" => result(i+1) := '0';
when o"1" => result(i+1) := '1';
when o"2" => result(i+1) := '2';
when o"3" => result(i+1) := '3';
when o"4" => result(i+1) := '4';
when o"5" => result(i+1) := '5';
when o"6" => result(i+1) := '6';
when o"7" => result(i+1) := '7';
end case;
end loop;
return result;
end function to_ostring;
-- alias TO_OCTAL_STRING is TO_OSTRING [BIT_VECTOR return STRING];
function TO_HSTRING (VALUE : BIT_VECTOR) return STRING is
constant ne : INTEGER := (value'length+3)/4;
constant pad : BIT_VECTOR(0 to (ne*4 - value'length) - 1) := (others => '0');
variable ivalue : BIT_VECTOR(0 to ne*4 - 1);
variable result : STRING(1 to ne);
variable quad : BIT_VECTOR(0 to 3);
begin
if value'length < 1 then
return "";
end if;
ivalue := pad & value;
for i in 0 to ne-1 loop
quad := ivalue(4*i to 4*i+3);
case quad is
when x"0" => result(i+1) := '0';
when x"1" => result(i+1) := '1';
when x"2" => result(i+1) := '2';
when x"3" => result(i+1) := '3';
when x"4" => result(i+1) := '4';
when x"5" => result(i+1) := '5';
when x"6" => result(i+1) := '6';
when x"7" => result(i+1) := '7';
when x"8" => result(i+1) := '8';
when x"9" => result(i+1) := '9';
when x"A" => result(i+1) := 'A';
when x"B" => result(i+1) := 'B';
when x"C" => result(i+1) := 'C';
when x"D" => result(i+1) := 'D';
when x"E" => result(i+1) := 'E';
when x"F" => result(i+1) := 'F';
end case;
end loop;
return result;
end function to_hstring;
-- alias TO_HEX_STRING is TO_HSTRING [BIT_VECTOR return STRING];
-- type INTEGER_VECTOR is array (NATURAL range <>) of INTEGER;
-- The predefined operations for this type are as follows:
function "=" (L, R : INTEGER_VECTOR) return BOOLEAN is
begin
if L'length /= R'length or L'length < 1 or R'length < 1 then
return false;
else
for i in l'range loop
if L(i) /= R(i) then
return false;
end if;
end loop;
return true;
end if;
end function "=";
function "/=" (L, R : INTEGER_VECTOR) return BOOLEAN is
begin
return not (L = R);
end function "/=";
function "<" (L, R : INTEGER_VECTOR) return BOOLEAN is
begin
if L'length /= R'length then
return L'length < R'length;
else
for i in l'range loop
if L(i) /= R(i) then
if L(i) < R(i) then
return true;
else
return false;
end if;
end if;
end loop;
return false;
end if;
end function "<";
function "<=" (L, R : INTEGER_VECTOR) return BOOLEAN is
begin
if L'length /= R'length then
return L'length < R'length;
else
for i in l'range loop
if L(i) /= R(i) then
if L(i) < R(i) then
return true;
else
return false;
end if;
end if;
end loop;
return true;
end if;
end function "<=";
function ">" (L, R : INTEGER_VECTOR) return BOOLEAN is
begin
if L'length /= R'length then
return L'length > R'length;
else
for i in l'range loop
if L(i) /= R(i) then
if L(i) > R(i) then
return true;
else
return false;
end if;
end if;
end loop;
return false;
end if;
end function ">";
function ">=" (L, R : INTEGER_VECTOR) return BOOLEAN is
begin
if L'length /= R'length then
return L'length > R'length;
else
for i in l'range loop
if L(i) /= R(i) then
if L(i) > R(i) then
return true;
else
return false;
end if;
end if;
end loop;
return true;
end if;
end function ">=";
-- function "&" (L: INTEGER_VECTOR; R: INTEGER_VECTOR)
-- return INTEGER_VECTOR;
-- function "&" (L: INTEGER_VECTOR; R: INTEGER) return INTEGER_VECTOR;
-- function "&" (L: INTEGER; R: INTEGER_VECTOR) return INTEGER_VECTOR;
-- function "&" (L: INTEGER; R: INTEGER) return INTEGER_VECTOR;
function MINIMUM (L, R : INTEGER_VECTOR) return INTEGER_VECTOR is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : INTEGER_VECTOR) return INTEGER_VECTOR is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function MINIMUM (L : INTEGER_VECTOR) return INTEGER is
variable result : INTEGER := INTEGER'high;
begin
for i in l'range loop
result := minimum (l(i), result);
end loop;
return result;
end function MINIMUM;
function MAXIMUM (L : INTEGER_VECTOR) return INTEGER is
variable result : INTEGER := INTEGER'low;
begin
for i in l'range loop
result := maximum (l(i), result);
end loop;
return result;
end function MAXIMUM;
-- type REAL_VECTOR is array (NATURAL range <>) of REAL;
-- The predefined operations for this type are as follows:
function "=" (L, R : REAL_VECTOR) return BOOLEAN is
begin
if L'length /= R'length or L'length < 1 or R'length < 1 then
return false;
else
for i in l'range loop
if L(i) /= R(i) then
return false;
end if;
end loop;
return true;
end if;
end function "=";
function "/=" (L, R : REAL_VECTOR) return BOOLEAN is
begin
return not (L = R);
end function "/=";
function "<" (L, R : REAL_VECTOR) return BOOLEAN is
begin
if L'length /= R'length then
return L'length < R'length;
else
for i in l'range loop
if L(i) /= R(i) then
if L(i) < R(i) then
return true;
else
return false;
end if;
end if;
end loop;
return false;
end if;
end function "<";
function "<=" (L, R : REAL_VECTOR) return BOOLEAN is
begin
if L'length /= R'length then
return L'length < R'length;
else
for i in l'range loop
if L(i) /= R(i) then
if L(i) < R(i) then
return true;
else
return false;
end if;
end if;
end loop;
return true;
end if;
end function "<=";
function ">" (L, R : REAL_VECTOR) return BOOLEAN is
begin
if L'length /= R'length then
return L'length > R'length;
else
for i in l'range loop
if L(i) /= R(i) then
if L(i) > R(i) then
return true;
else
return false;
end if;
end if;
end loop;
return false;
end if;
end function ">";
function ">=" (L, R : REAL_VECTOR) return BOOLEAN is
begin
if L'length /= R'length then
return L'length > R'length;
else
for i in l'range loop
if L(i) /= R(i) then
if L(i) > R(i) then
return true;
else
return false;
end if;
end if;
end loop;
return true;
end if;
end function ">=";
-- function "&" (L: REAL_VECTOR; R: REAL_VECTOR)
-- return REAL_VECTOR;
-- function "&" (L: REAL_VECTOR; R: REAL) return REAL_VECTOR;
-- function "&" (L: REAL; R: REAL_VECTOR) return REAL_VECTOR;
-- function "&" (L: REAL; R: REAL) return REAL_VECTOR;
function MINIMUM (L, R : REAL_VECTOR) return REAL_VECTOR is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : REAL_VECTOR) return REAL_VECTOR is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function MINIMUM (L : REAL_VECTOR) return REAL is
variable result : REAL := REAL'high;
begin
for i in l'range loop
result := minimum (l(i), result);
end loop;
return result;
end function MINIMUM;
function MAXIMUM (L : REAL_VECTOR) return REAL is
variable result : REAL := REAL'low;
begin
for i in l'range loop
result := maximum (l(i), result);
end loop;
return result;
end function MAXIMUM;
-- type TIME_VECTOR is array (NATURAL range <>) of TIME;
-- The predefined implicit operations for this type are as follows:
function "=" (L, R : TIME_VECTOR) return BOOLEAN is
begin
if L'length /= R'length or L'length < 1 or R'length < 1 then
return false;
else
for i in l'range loop
if L(i) /= R(i) then
return false;
end if;
end loop;
return true;
end if;
end function "=";
function "/=" (L, R : TIME_VECTOR) return BOOLEAN is
begin
return not (L = R);
end function "/=";
function "<" (L, R : TIME_VECTOR) return BOOLEAN is
begin
if L'length /= R'length then
return L'length < R'length;
else
for i in l'range loop
if L(i) /= R(i) then
if L(i) < R(i) then
return true;
else
return false;
end if;
end if;
end loop;
return false;
end if;
end function "<";
function "<=" (L, R : TIME_VECTOR) return BOOLEAN is
begin
if L'length /= R'length then
return L'length < R'length;
else
for i in l'range loop
if L(i) /= R(i) then
if L(i) < R(i) then
return true;
else
return false;
end if;
end if;
end loop;
return true;
end if;
end function "<=";
function ">" (L, R : TIME_VECTOR) return BOOLEAN is
begin
if L'length /= R'length then
return L'length > R'length;
else
for i in l'range loop
if L(i) /= R(i) then
if L(i) > R(i) then
return true;
else
return false;
end if;
end if;
end loop;
return false;
end if;
end function ">";
function ">=" (L, R : TIME_VECTOR) return BOOLEAN is
begin
if L'length /= R'length then
return L'length > R'length;
else
for i in l'range loop
if L(i) /= R(i) then
if L(i) > R(i) then
return true;
else
return false;
end if;
end if;
end loop;
return true;
end if;
end function ">=";
-- function "&" (L: TIME_VECTOR; R: TIME_VECTOR)
-- return TIME_VECTOR;
-- function "&" (L: TIME_VECTOR; R: TIME) return TIME_VECTOR;
-- function "&" (L: TIME; R: TIME_VECTOR) return TIME_VECTOR;
-- function "&" (L: TIME; R: TIME) return TIME_VECTOR;
function MINIMUM (L, R : TIME_VECTOR) return TIME_VECTOR is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : TIME_VECTOR) return TIME_VECTOR is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function MINIMUM (L : TIME_VECTOR) return TIME is
variable result : TIME := TIME'high;
begin
for i in l'range loop
result := minimum (l(i), result);
end loop;
return result;
end function MINIMUM;
function MAXIMUM (L : TIME_VECTOR) return TIME is
variable result : TIME := TIME'low;
begin
for i in l'range loop
result := maximum (l(i), result);
end loop;
return result;
end function MAXIMUM;
function MINIMUM (L, R : FILE_OPEN_KIND) return FILE_OPEN_KIND is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : FILE_OPEN_KIND) return FILE_OPEN_KIND is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function TO_STRING (VALUE : FILE_OPEN_KIND) return STRING is
begin
return FILE_OPEN_KIND'image(VALUE);
end function TO_STRING;
function MINIMUM (L, R : FILE_OPEN_STATUS) return FILE_OPEN_STATUS is
begin
if L > R then return R;
else return L;
end if;
end function MINIMUM;
function MAXIMUM (L, R : FILE_OPEN_STATUS) return FILE_OPEN_STATUS is
begin
if L > R then return L;
else return R;
end if;
end function MAXIMUM;
function TO_STRING (VALUE : FILE_OPEN_STATUS) return STRING is
begin
return FILE_OPEN_STATUS'image(VALUE);
end function TO_STRING;
-- USED INTERNALLY!
function justify (
value : in STRING;
justified : in SIDE := right;
field : in width := 0)
return STRING is
constant VAL_LEN : INTEGER := value'length;
variable result : STRING (1 to field) := (others => ' ');
begin -- function justify
-- return value if field is too small
if VAL_LEN >= field then
return value;
end if;
if justified = left then
result(1 to VAL_LEN) := value;
elsif justified = right then
result(field - VAL_LEN + 1 to field) := value;
end if;
return result;
end function justify;
function TO_STRING (VALUE : TIME; UNIT : TIME) return STRING is
variable L : LINE; -- pointer
begin
deallocate (L);
write (L => L,
VALUE => VALUE,
UNIT => UNIT);
return L.all;
end function to_string;
function TO_STRING (VALUE : REAL; FORMAT : STRING) return STRING is
constant czero : CHARACTER := '0'; -- zero
constant half : REAL := 0.4999999999; -- almost 0.5
-- Log10 funciton
function log10 (arg : REAL) return INTEGER is
variable i : INTEGER := 1;
begin
if ((arg = 0.0)) then
return 0;
elsif arg >= 1.0 then
while arg >= 10.0**i loop
i := i + 1;
end loop;
return (i-1);
else
while arg < 10.0**i loop
i := i - 1;
end loop;
return i;
end if;
end function log10;
-- purpose: writes a fractional real number into a line
procedure writefrc (
variable L : inout LINE; -- LINE
variable cdes : in CHARACTER;
variable precision : in INTEGER; -- number of decimal places
variable value : in REAL) is -- real value
variable rvar : REAL; -- temp variable
variable xint : INTEGER;
variable xreal : REAL;
begin
xreal := (10.0**(-precision));
write (L, '.');
rvar := value;
for i in 1 to precision loop
rvar := rvar * 10.0;
xint := INTEGER(rvar-0.49999999999); -- round
write (L, xint);
rvar := rvar - REAL(xint);
xreal := xreal * 10.0;
if (cdes = 'g') and (rvar < xreal) then
exit;
end if;
end loop;
end procedure writefrc;
-- purpose: replace the "." with a "@", and "e" with "j" to get around
-- read ("6.") and read ("2e") issues.
function subdot (
constant format : STRING)
return STRING is
variable result : STRING (format'range);
begin
for i in format'range loop
if (format(i) = '.') then
result(i) := '@'; -- Because the parser reads 6.2 as REAL
elsif (format(i) = 'e') then
result(i) := 'j'; -- Because the parser read 2e as REAL
elsif (format(i) = 'E') then
result(i) := 'J'; -- Because the parser reads 2E as REAL
else
result(i) := format(i);
end if;
end loop;
return result;
end function subdot;
-- purpose: find a . in a STRING
function isdot (
constant format : STRING)
return BOOLEAN is
begin
for i in format'range loop
if (format(i) = '@') then
return true;
end if;
end loop;
return false;
end function isdot;
variable exp : INTEGER; -- integer version of baseexp
variable bvalue : REAL; -- base value
variable roundvar, tvar : REAL; -- Rounding values
variable frcptr : INTEGER; -- integer version of number
variable fwidth, dwidth : INTEGER; -- field width and decimal width
variable dash, dot : BOOLEAN := false;
variable cdes, ddes : CHARACTER := ' ';
variable L : LINE; -- line type
begin
-- Perform the same function that "printf" does
-- examples "%6.2f" "%-7e" "%g"
if not (format(format'left) = '%') then
report "to_string: Illegal format string """ & format & '"'
severity error;
return "";
end if;
L := new STRING'(subdot(format));
read (L, ddes); -- toss the '%'
case L.all(1) is
when '-' => dash := true;
when '@' => dash := true; -- in FP, a "-" and a "." are the same
when 'f' => cdes := 'f';
when 'F' => cdes := 'F';
when 'g' => cdes := 'g';
when 'G' => cdes := 'G';
when 'j' => cdes := 'e'; -- parser reads 5e as real, thus we sub j
when 'J' => cdes := 'E';
when '0'|'1'|'2'|'3'|'4'|'5'|'6'|'7'|'8'|'9' => null;
when others =>
report "to_string: Illegal format string """ & format & '"'
severity error;
return "";
end case;
if (dash or (cdes /= ' ')) then
read (L, ddes); -- toss the next character
end if;
if (cdes = ' ') then
if (isdot(L.all)) then -- if you see a . two numbers
read (L, fwidth); -- read field width
read (L, ddes); -- toss the next character .
read (L, dwidth); -- read decimal width
else
read (L, fwidth); -- read field width
dwidth := 6; -- the default decimal width is 6
end if;
read (L, cdes);
if (cdes = 'j') then
cdes := 'e'; -- because 2e reads as "REAL".
elsif (cdes = 'J') then
cdes := 'E';
end if;
else
if (cdes = 'E' or cdes = 'e') then
fwidth := 10; -- default for e and E is %10.6e
else
fwidth := 0; -- default for f and g is %0.6f
end if;
dwidth := 6;
end if;
deallocate (L); -- reclame the pointer L.
-- assert (not debug) report "Format: " & format & " "
-- & INTEGER'image(fwidth) & "." & INTEGER'image(dwidth) & cdes
-- severity note;
if (not (cdes = 'f' or cdes = 'F' or cdes = 'g' or cdes = 'G'
or cdes = 'e' or cdes = 'E')) then
report "to_string: Illegal format """ & format & '"' severity error;
return "";
end if;
if (VALUE < 0.0) then
bvalue := -value;
write (L, '-');
else
bvalue := value;
end if;
case cdes is
when 'e' | 'E' => -- 7.000E+01
exp := log10(bvalue);
roundvar := half*(10.0**(exp-dwidth));
bvalue := bvalue + roundvar; -- round
exp := log10(bvalue); -- because we CAN overflow
bvalue := bvalue * (10.0**(-exp)); -- result is D.XXXXXX
frcptr := INTEGER(bvalue-half); -- Write a single digit.
write (L, frcptr);
bvalue := bvalue - REAL(frcptr);
writefrc (-- Write out the fraction
L => L,
cdes => cdes,
precision => dwidth,
value => bvalue);
write (L, cdes); -- e or E
if (exp < 0) then
write (L, '-');
else
write (L, '+');
end if;
exp := abs(exp);
if (exp < 10) then -- we need another "0".
write (L, czero);
end if;
write (L, exp);
when 'f' | 'F' => -- 70.0
exp := log10(bvalue);
roundvar := half*(10.0**(-dwidth));
bvalue := bvalue + roundvar; -- round
exp := log10(bvalue); -- because we CAN overflow
if (exp < 0) then -- 0.X case
write (L, czero);
else -- loop because real'high > integer'high
while (exp >= 0) loop
frcptr := INTEGER(bvalue * (10.0**(-exp)) - half);
write (L, frcptr);
bvalue := bvalue - (REAL(frcptr) * (10.0**exp));
exp := exp-1;
end loop;
end if;
writefrc (
L => L,
cdes => cdes,
precision => dwidth,
value => bvalue);
when 'g' | 'G' => -- 70
exp := log10(bvalue);
roundvar := half*(10.0**(exp-dwidth)); -- small number
bvalue := bvalue + roundvar; -- round
exp := log10(bvalue); -- because we CAN overflow
frcptr := INTEGER(bvalue-half);
tvar := bvalue-roundvar - REAL(frcptr); -- even smaller number
if (exp < dwidth)
and (tvar < roundvar and tvar > -roundvar) then
-- and ((bvalue-roundvar) = real(frcptr)) then
write (L, frcptr); -- Just a short integer, write it.
elsif (exp >= dwidth) or (exp < -4) then
-- in "e" format (modified)
bvalue := bvalue * (10.0**(-exp)); -- result is D.XXXXXX
frcptr := INTEGER(bvalue-half);
write (L, frcptr);
bvalue := bvalue - REAL(frcptr);
if (bvalue > (10.0**(1-dwidth))) then
dwidth := dwidth - 1;
writefrc (
L => L,
cdes => cdes,
precision => dwidth,
value => bvalue);
end if;
if (cdes = 'G') then
write (L, 'E');
else
write (L, 'e');
end if;
if (exp < 0) then
write (L, '-');
else
write (L, '+');
end if;
exp := abs(exp);
if (exp < 10) then
write (L, czero);
end if;
write (L, exp);
else
-- in "f" format (modified)
if (exp < 0) then
write (L, czero);
dwidth := maximum (dwidth, 4); -- if exp < -4 or > precision.
bvalue := bvalue - roundvar; -- recalculate rounding
roundvar := half*(10.0**(-dwidth));
bvalue := bvalue + roundvar;
else
write (L, frcptr); -- integer part (always small)
bvalue := bvalue - (REAL(frcptr));
dwidth := dwidth - exp - 1;
end if;
if (bvalue > roundvar) then
writefrc (
L => L,
cdes => cdes,
precision => dwidth,
value => bvalue);
end if;
end if;
when others => return "";
end case;
-- You don't truncate real numbers.
-- if (dot) then -- truncate
-- if (L.all'length > fwidth) then
-- return justify (value => L.all (1 to fwidth),
-- justified => RIGHT,
-- field => fwidth);
-- else
-- return justify (value => L.all,
-- justified => RIGHT,
-- field => fwidth);
-- end if;
if (dash) then -- fill to fwidth
return justify (value => L.all,
justified => left,
field => fwidth);
else
return justify (value => L.all,
justified => right,
field => fwidth);
end if;
end function to_string;
end package body standard_additions;
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