FixedPoint class

A representation of (un)signed fixed-point logic following Q notation (Qm.n format) as introduced by (Texas Instruments)https://www.ti.com/lit/ug/spru565b/spru565b.pdf.

Inheritance
Available Extensions

Constructors

FixedPoint({required bool signed, required int m, required int n, String? name, Naming? naming})
Constructs a FixedPoint signal.
FixedPoint.of(Logic signal, {required bool signed, required int m, required int n})
Cast logic to fixed point

Properties

arrayIndex → int?
If this is a part of a LogicArray, the index within that array. Othwerise, returns null.
no setterinherited
bit → LogicValue
The current active value of this signal if it has width 1, as a LogicValue.
no setterinherited
changed → Stream<LogicValueChanged>
A Stream of LogicValueChanged events which triggers at most once per Simulator tick, iff the value of the Logic has changed.
no setterinherited
dstConnections → Iterable<Logic>
An Iterable of all Logics that are being directly driven by this.
latefinalinherited
elements → List<Logic>
Provides a list of logical elements within this signal.
latefinalinherited
glitch → SynchronousEmitter<LogicValueChanged>
A stream of LogicValueChanged events for every time the signal transitions at any time during a Simulator tick.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
isArrayMember → bool
True if this is a member of a LogicArray.
no setterinherited
isInput → bool
Returns true iff this signal is an input of its parent Module.
latefinalinherited
isOutput → bool
Returns true iff this signal is an output of its parent Module.
latefinalinherited
isPort → bool
Returns true iff this signal is an input or output of its parent Module.
no setterinherited
m → int
m is the number of bits reserved for the integer part.
final
n → int
n is the number of bits reserved for the fractional part.
final
name → String
The name of this signal.
finalinherited
naming → Naming
Controls the naming (and renaming) preferences of this signal in generated outputs.
finalinherited
negedge → Stream<LogicValueChanged>
A Stream of LogicValueChanged events which triggers at most once per Simulator tick, iff the value of the Logic has changed from 1 to 0.
no setterinherited
nextChanged → Future<LogicValueChanged>
Triggers at most once, the next time that this Logic changes value at the end of a Simulator tick.
no setterinherited
nextNegedge → Future<LogicValueChanged>
Triggers at most once, the next time that this Logic changes value at the end of a Simulator tick from 1 to 0.
no setterinherited
nextPosedge → Future<LogicValueChanged>
Triggers at most once, the next time that this Logic changes value at the end of a Simulator tick from 0 to 1.
no setterinherited
parentModule ↔ Module?
The Module that this Logic exists within.
getter/setter pairinherited
parentStructure → LogicStructure?
If this is a part of a LogicStructure, the structure which this is a part of. Otherwise, null.
no setterinherited
posedge → Stream<LogicValueChanged>
A Stream of LogicValueChanged events which triggers at most once per Simulator tick, iff the value of the Logic has changed from 0 to 1.
no setterinherited
previousValue → LogicValue?
The value of this signal before the most recent Simulator.tick had completed. It will be null before the first tick after this signal is created.
no setterinherited
reversed → Logic
Returns a version of this Logic with the bit order reversed.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
signed → bool
signed indicates whether the representation is signed.
final
srcConnection → Logic?
The Logic signal that is driving this, if any.
no setterinherited
structureName → String
Returns the name relative to the parentStructure-defined hierarchy, if one exists. Otherwise, this is the same as name.
no setterinherited
value → LogicValue
The current active value of this signal.
no setterinherited
valueBigInt → BigInt
The current valid active value of this signal as a BigInt.
no setterinherited
valueInt → int
The current valid active value of this signal as an int.
no setterinherited
width → int
The number of bits in this signal.
no setterinherited

Methods

abs() → Logic
Calculates the absolute value of a signal, assuming that the number is a two's complement.
inherited
and() → Logic
Unary AND.
inherited
clone({String? name}) → FixedPoint
Clone for I/O ports.
decr({Logic s(Logic)?, dynamic val = 1}) → Conditional
Shorthand for a Conditional which decrements this by val.
inherited
divAssign(dynamic val, {Logic s(Logic)?}) → Conditional
Shorthand for a Conditional which increments this by val.
inherited
eq(dynamic other) → Logic
Logical equality.
override
getRange(int startIndex, [int? endIndex]) → Logic
Returns a subset Logic. It is inclusive of startIndex, exclusive of endIndex.
inherited
gets(Logic other) → void
Connects this Logic directly to other.
inherited
gt(dynamic other) → Logic
Greater-than.
override
gte(dynamic other) → Logic
Greater-than.
override
hasValidValue() → bool
Returns true iff the value of this signal is valid (no x or z).
inherited
incr({Logic s(Logic)?, dynamic val = 1}) → Conditional
Shorthand for a Conditional which increments this by val.
inherited
inject(dynamic val, {bool fill = false}) → void
Injects a value onto this signal in the current Simulator tick.
inherited
isFloating() → bool
Returns true iff all bits of the current value are floating (z).
inherited
isIn(List list) → Logic
Returns 1 (of width=1) if the Logic calling this function is in list. Else 0 (of width=1) if not present.
inherited
lt(dynamic other) → Logic
Less-than.
override
lte(dynamic other) → Logic
Less-than-or-equal-to.
override
makeUnassignable() → void
Makes it so that this signal cannot be assigned by any full (<=) or conditional (<) assignment.
inherited
mulAssign(dynamic val, {Logic s(Logic)?}) → Conditional
Shorthand for a Conditional which increments this by val.
inherited
neq(dynamic other) → Logic
Logical inequality.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
or() → Logic
Unary OR.
inherited
pow(dynamic exponent) → Logic
Power operation
override
put(dynamic val, {bool fill = false}) → void
Puts a value val onto this signal, which may or may not be picked up for changed in this Simulator tick.
override
replicate(int multiplier) → Logic
Returns a replicated signal using ReplicationOp with new width = this.width * multiplier The input multiplier cannot be negative or 0; an exception will be thrown, otherwise.
inherited
selectFrom(List<Logic> busList, {Logic? defaultValue}) → Logic
Performs a Logic index based selection on an List of Logic named busList.
inherited
signExtend(int newWidth) → Logic
Returns a new Logic width width newWidth where new bits added are sign bits as the most significant bits. The sign is determined using two's complement, so it takes the most significant bit of the original signal and extends with that.
inherited
slice(int endIndex, int startIndex) → Logic
Accesses a subset of this signal from startIndex to endIndex, both inclusive.
inherited
toString() → String
A string representation of this object.
inherited
withSet(int startIndex, Logic update) → Logic
Returns a copy of this Logic with the bits starting from startIndex up until startIndex + update.width set to update instead of their original value.
inherited
xor() → Logic
Unary XOR.
inherited
zeroExtend(int newWidth) → Logic
Returns a new Logic with width newWidth where new bits added are zeros as the most significant bits.
inherited

Operators

operator %(dynamic other) → Logic
Modulo operation.
override
operator &(Logic other) → Logic
Logical bitwise AND.
inherited
operator *(dynamic other) → Logic
Multiplication.
inherited
operator +(dynamic other) → Logic
Addition.
inherited
operator -(dynamic other) → Logic
Subtraction.
inherited
operator /(dynamic other) → Logic
Division.
override
operator <(dynamic other) → Conditional
Conditional assignment operator.
inherited
operator <<(dynamic other) → Logic
Logical left-shift.
inherited
operator <=(Logic other) → void
Connects this Logic directly to another Logic.
inherited
operator ==(Object other) → bool
The equality operator.
inherited
operator >(dynamic other) → Logic
Greater-than.
override
operator >=(dynamic other) → Logic
Greater-than-or-equal-to.
override
operator >>(dynamic other) → Logic
Arithmetic right-shift.
inherited
operator >>>(dynamic other) → Logic
Logical right-shift.
inherited
operator [](dynamic index) → Logic
Accesses the indexth bit of this signal.
inherited
operator ^(Logic other) → Logic
Logical bitwise XOR.
inherited
operator |(Logic other) → Logic
Logical bitwise OR.
inherited
operator ~() → Logic
Logical bitwise NOT.
inherited