DoubleSignalSource (BandM signal & music)

All Superinterfaces:

AbstractSignalSource, CompilableDataFlow, DoubleSupplier

All Known Subinterfaces:

DoubleADSR, DoubleClockedSignalSource

All Known Implementing Classes:

CompilableDoubleStoredSignalSource, DoubleClockedSignalSource.AbstractRandom, DoubleDelay, DoubleMultiDelay, DoubleOscillator, DoubleSignalPort, DoubleSignalSourceChooser, DoubleSignalSourceChooser.OfEnum, DoubleSignalSourceChooser.OfEnumInt, DoubleSignalSourceChooser.OfInt, DoubleStoredSignalSource, DoubleUpsamplingSignalSource

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface DoubleSignalSource
extends AbstractSignalSource, DoubleSupplier
```
Interface of a signal (time-dependent value) source of primitive type double.
This basic interface is neutral with respect to whether values may change at arbitrary times or synchronously with respect to a clock, and to whether values are computed on the fly when demanded, or stored when available and then just retrieved.

See Also:

DoubleClockedSignalSource

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods Deprecated Methods
Modifier and Type	Method and Description
`default DoubleSignalSource`	`abs()` Returns a new signal source whose value is the absolute of the value of this signal source.
`default DoubleSignalSource`	`add(DoubleSignalSource other)` Returns a new signal source whose value is the sum of the simultaneous values of this and another signal source.
`static DoubleSignalSource`	`choose(BooleanSignalSource condition, DoubleSignalSource inTrue, DoubleSignalSource inFalse)` Returns a new signal source whose value is that of either of two given type-compatible signal sources, depending on the current value of a condition signal source.
`static <E extends Enum<E>> DoubleSignalSource`	`choose(EnumSignalSource<E> selector, DoubleSignalSource... cases)` Returns a new signal source whose value is selected dynamically from a range of cases indexed by `enum` values.
`static <E extends Enum<E>> DoubleSignalSource`	`choose(EnumSignalSource<E> selector, EnumMap<E,? extends DoubleSignalSource> cases)` Returns a new signal source whose value is selected dynamically from a range of cases indexed by `enum` values.
`static <E extends Enum<E>> DoubleSignalSource`	`choose(SignalSource<E> selector, EnumMap<E,? extends DoubleSignalSource> cases)` Returns a new signal source whose value is selected dynamically from a range of cases indexed by `enum` values.
`static DoubleClockedSignalSource`	`clock(DoubleSignalSource output, Process... processes)`
`default Consumer<CompilationContext>`	`compileDataFlow()` Returns a code generator for outputting the value of this entity.
`default void`	`compileMainSignalSource(CompilationContext context)`
`static DoubleSignalSource`	`constant(double value)` Returns a signal source whose value is constant (never changes).
`default BooleanSignalSource`	`defined()` Returns a new signal source whose value is `true` iff the value of this signal source is a valid number.
`default DoubleClockedSignalSource`	`delayed(double... initialValues)` Returns a new signal source that mirror the values of this signal source delayed by a given number of clock ticks.
`default DoubleClockedSignalSource`	`delayed(double initialValue)` Returns a new signal source that mirrors the values of this signal source delayed by one clock tick.
`static DoubleClockedSignalSource`	`delayedFeedback(Function<? super DoubleClockedSignalSource,? extends DoubleSignalSource> loop, double... initialValues)`
`static DoubleClockedSignalSource`	`delayedFeedback(Function<? super DoubleClockedSignalSource,? extends DoubleSignalSource> loop, double initialValue)` Returns a new signal source that receives its own delayed output as input.
`default DoubleSignalSource`	`divide(DoubleSignalSource other)` Returns a new signal source whose value is the quotient of the simultaneous values of this and another signal source.
`default BooleanSignalSource`	`equal(DoubleSignalSource other)` Returns a new signal source whose value is `true` iff the value of this signal source is equal to the simultaneous value of another signal source.
`double`	`getAsDouble()` Returns the current value of this signal source.
`default Optional<Double>`	`getConstantAsDouble()` Returns the constant value of this signal source, if applicable.
`default Class<?>`	`getValueClass()` Returns the type of values produced by this entity.
`default DoubleClockedSignalSource`	`glidingAverage(int width)` Returns a signal source whose value at each clock index is the average of values of this signal source at a fixed number of preceding clock indices, including to the current one.
`default DoubleClockedSignalSource`	`glidingStandardDeviation(int width)` Returns a signal source whose value at each clock index is the standard deviation of values of this signal source at a fixed number of preceding clock indices, including to the current one.
`default DoubleClockedSignalSource`	`glidingSum(int width)` Returns a signal source whose value at each clock index is the sum of values of this signal source at a fixed number of preceding clock indices, including to the current one.
`default DoubleClockedSignalSource`	`glidingVariance(int width)` Returns a signal source whose value at each clock index is the variance of values of this signal source at a fixed number of preceding clock indices, including to the current one.
`default BooleanSignalSource`	`greaterOrEqual(DoubleSignalSource other)` Returns a new signal source whose value is `true` iff the value of this signal source is greater than or equal to the simultaneous value of another signal source.
`default BooleanSignalSource`	`greaterThan(DoubleSignalSource other)` Returns a new signal source whose value is `true` iff the value of this signal source is greater than the simultaneous value of another signal source.
`default BooleanSignalSource`	`guard(DoublePredicate pred)` Returns a boolean signal source whose values are derived from the values of this signal source by applying a unary predicate.
`default boolean`	`hasConstantAsDouble()` Checks whether this signal source has a constant value.
`default DoubleClockedSignalSource`	`invariant()`
`default BooleanSignalSource`	`lessOrEqual(DoubleSignalSource other)` Returns a new signal source whose value is `true` iff the value of this signal source is less than or equal to the simultaneous value of another signal source.
`default BooleanSignalSource`	`lessThan(DoubleSignalSource other)` Returns a new signal source whose value is `true` iff the value of this signal source is less than the simultaneous value of another signal source.
`default DoubleSignalSource`	`map(DoubleUnaryOperator op)` Returns a signal source whose values are derived from the values of this signal source by applying a unary function.
`default DoubleSignalSource`	`max(DoubleSignalSource other)` Returns a new signal source whose value is the maximum of the simultaneous values of this and another signal source.
`default DoubleSignalSource`	`min(DoubleSignalSource other)` Returns a new signal source whose value is the minimum of the simultaneous values of this and another signal source.
`default DoubleSignalSource`	`modulo(DoubleSignalSource other)` Returns a new signal source whose value is the division remainder of the simultaneous values of this and another signal source.
`default DoubleSignalSource`	`multiply(DoubleSignalSource other)` Returns a new signal source whose value is the product of the simultaneous values of this and another signal source.
`default DoubleSignalSource`	`negate()` Returns a new signal source whose value is the negative of the value of this signal source.
`default BooleanSignalSource`	`negative()` Returns a new signal source whose value is `true` iff the value of this signal source is a negative number.
`default BooleanSignalSource`	`nonEqual(DoubleSignalSource other)` Returns a new signal source whose value is `true` iff the value of this signal source is not equal to the simultaneous value of another signal source.
`default BooleanSignalSource`	`nonnegative()` Returns a new signal source whose value is `true` iff the value of this signal source is a nonnegative number.
`default BooleanSignalSource`	`nonpositive()` Returns a new signal source whose value is `true` iff the value of this signal source is a nonpositive number.
`default BooleanSignalSource`	`nonzero()` Returns a new signal source whose value is `true` iff the value of this signal source is not the number zero.
`default BooleanSignalSource`	`notANumber()` Returns a new signal source whose value is `true` iff the value of this signal source is not a valid number.
`default BooleanSignalSource`	`positive()` Returns a new signal source whose value is `true` iff the value of this signal source is a positive number.
`default DoubleClockedSignalSource`	`power(BinaryOperator<DoubleSignalSource> op, long n)`
`default Process`	`probe(Object key)` Returns a realtime event that, when fired, notifies the concerned observer of the current value of this signal source.
`default void`	`publishStoredValueVariable(CompilationContext context)`
`default BooleanSignalSource`	`relateWith(DoubleBiPredicate pred, DoubleSignalSource other)` Returns a boolean signal source whose values are derived from the simultaneous values of this and another signal source by applying a binary predicate.
`default DoubleClockedSignalSource`	`sampleAndHold(BooleanSignalSource hold, double initialValue)` Returns a new clocked signal source whose value at each clock tick is either the current value of this signal source (sample mode), or its own value at the previous clock tick (hold mode), depending on the current value of a given boolean signal source.
`default DoubleSignalSource`	`selectAffine(DoubleSignalSource onOne, DoubleSignalSource onZero)` Deprecated. FIXME
`default DoubleClockedSignalSource`	`series()` Returns a signal source whose value at each clock index is the sum of all values of this signal source at all clock indices up to the current one.
`default DoubleSignalSource`	`sqrt()` Returns a new signal source whose value is the square root of the value of this signal source.
`default DoubleClockedSignalSource`	`stored()` Returns a new signal source that stores snapshot values of this signal source driven by a clock.
`default DoubleSignalSource`	`subtract(DoubleSignalSource other)` Returns a new signal source whose value is the difference of the simultaneous values of this and another signal source.
`default BooleanSignalSource`	`zero()` Returns a new signal source whose value is `true` iff the value of this signal source is the number zero.
`default BooleanClockedSignalSource`	`zeroCrossing()` Returns a signal source whose value at each clock index is `true` if the current value of this signal source has changed sign compared to its value at the preceding clock index.
`default DoubleSignalSource`	`zipWith(DoubleBinaryOperator op, DoubleSignalSource other)` Returns a signal source whose values are derived from the simultaneous values of this and another signal source by applying a binary function.

Methods inherited from interface eu.bandm.sig.adlib2.compile.CompilableDataFlow
compileDataFlowTo, hasDataFlowIO

- Method Detail
  - getAsDouble
```
double getAsDouble()
```
    Returns the current value of this signal source.
    The value may be either computed on demand, or retrieved from storage.
    Implementations of this method should have no side effect.
    
    Specified by:
    
    getAsDouble in interface DoubleSupplier
    
    Returns:
    
    the current value of this signal source
  - getValueClass
```
default Class<?> getValueClass()
```
    Returns the type of values produced by this entity.
    For signals of primitive value type, the result will be the corresponding pseudoclass.
    This implementation returns the primitive pseudoclass double.class.
    
    Specified by:
    
    getValueClass in interface CompilableDataFlow
    
    Returns:
    
    the type of signal values that this entity produces
    
    See Also:
    
    Class.isPrimitive()
  - getConstantAsDouble
```
default Optional<Double> getConstantAsDouble()
```
    Returns the constant value of this signal source, if applicable.
    
    Returns:
    
    an Optional containing the value of this signal source if it is constant, or Optional.empty() otherwise.
  - hasConstantAsDouble
```
default boolean hasConstantAsDouble()
```
    Checks whether this signal source has a constant value.
    
    Returns:
    
    true iff the value of this signal source does not change over time
  - compileDataFlow
```
default Consumer<CompilationContext> compileDataFlow()
```
    Returns a code generator for outputting the value of this entity.
    This implementation generates code to invoke this.getAsDouble().
    
    Specified by:
    
    compileDataFlow in interface CompilableDataFlow
  - constant
```
static DoubleSignalSource constant(double value)
```
    Returns a signal source whose value is constant (never changes).
    
    Parameters:
    
    value - the value of the new signal source
    
    Returns:
    
    a signal source that always has the given value
  - map
```
default DoubleSignalSource map(DoubleUnaryOperator op)
```
    Returns a signal source whose values are derived from the values of this signal source by applying a unary function.
    The implementation yields a signal source that computes the derived value by applying the given function every time its getAsDouble() method is invoked. If the computation is costly and the value reused often, it may be convenient to compute and store the value proactively driven by a clock.
    
    Parameters:
    
    op - the function to apply to each value
    
    See Also:
    
    stored()
  - zipWith
```
default DoubleSignalSource zipWith(DoubleBinaryOperator op,
                                   DoubleSignalSource other)
```
    Returns a signal source whose values are derived from the simultaneous values of this and another signal source by applying a binary function.
    The implementation yields a signal source that computes the derived value by applying the given function every time its getAsDouble() method is invoked. If the computation is costly and the value reused often, it may be convenient to compute the value proactively driven by a clock.
    
    Parameters:
    
    op - the function to apply to each pair of values
    
    other - the other signal source to consider
    
    See Also:
    
    stored()
  - guard
```
default BooleanSignalSource guard(DoublePredicate pred)
```
    Returns a boolean signal source whose values are derived from the values of this signal source by applying a unary predicate.
    The implementation yields a signal source that computes the derived value by applying the given predicate every time its getAsDouble() method is invoked. If the computation is costly and the value reused often, it may be convenient to compute the value proactively driven by a clock.
    
    Parameters:
    
    pred - the predicate to apply to each value
    
    See Also:
    
    stored()
  - relateWith
```
default BooleanSignalSource relateWith(DoubleBiPredicate pred,
                                       DoubleSignalSource other)
```
    Returns a boolean signal source whose values are derived from the simultaneous values of this and another signal source by applying a binary predicate.
    The implementation yields a signal source that computes the derived value by applying the given predicate every time its getAsDouble() method is invoked. If the computation is costly and the value reused often, it may be convenient to compute the value proactively driven by a clock.
    
    Parameters:
    
    pred - the predicate to apply to each value
    
    other - the other signal source to consider
    
    See Also:
    
    stored()
  - clock
```
@Undocumented
static DoubleClockedSignalSource clock(DoubleSignalSource output,
                                                     Process... processes)
```
  - invariant
```
@Undocumented
default DoubleClockedSignalSource invariant()
```
  - stored
```
default DoubleClockedSignalSource stored()
```
    Returns a new signal source that stores snapshot values of this signal source driven by a clock.
    The getAsDouble() method of the returned signal source is guaranteed to be extremely fast, both in interpreted and compiled mode. The computational effort of the underlying signal source is instead spent on the Process.step(RealtimeContext) method of the returned signal source, to be invoked at each clock tick.
    If the underlying signal source is constant, the value is forwarded when the Process.init() method of the returned signal source is invoked, where as its implementation of Process.step(RealtimeContext) does nothing.
    
    Returns:
    
    a new signal source that takes value snapshots of this signal source.
  - delayed
```
default DoubleClockedSignalSource delayed(double initialValue)
```
    Returns a new signal source that mirrors the values of this signal source delayed by one clock tick.
    
    Parameters:
    
    initialValue - the initial value to output for the first clock tick
  - delayed
```
default DoubleClockedSignalSource delayed(double... initialValues)
```
    Returns a new signal source that mirror the values of this signal source delayed by a given number of clock ticks.
    The length of the delay in clock ticks is specified implicitly by the number of initial values.
    
    Parameters:
    
    initialValues - the initial values to output for the first clock ticks
  - delayedFeedback
```
static DoubleClockedSignalSource delayedFeedback(Function<? super DoubleClockedSignalSource,? extends DoubleSignalSource> loop,
                                                 double initialValue)
```
    Returns a new signal source that receives its own delayed output as input.
    The circular data flow is constructed by specifying a function that receives as its argument a delayed signal source that will be fed back from the source that it returns. The passed function is applied exactly once.
    The output signal source is used both internally for the delayed feedback, and possibly externally by a consumer. Hence its value is stored implicitly in an intermediate variable in order to avoid duplicate computations.
    
    Parameters:
    
    loop - the function that creates the output signal source, given its delayed feedback
    
    initialValue - the initial value of the delayed feedback
  - delayedFeedback
```
@SafeVarargs
static DoubleClockedSignalSource delayedFeedback(Function<? super DoubleClockedSignalSource,? extends DoubleSignalSource> loop,
                                                              double... initialValues)
```
  - probe
```
default Process probe(Object key)
```
    Returns a realtime event that, when fired, notifies the concerned observer of the current value of this signal source.
    
    Parameters:
    
    key - the key to associate the value of this signal source with
    
    See Also:
    
    RealtimeContext.getSignalProbe()
  - choose
```
static DoubleSignalSource choose(BooleanSignalSource condition,
                                 DoubleSignalSource inTrue,
                                 DoubleSignalSource inFalse)
```
    Returns a new signal source whose value is that of either of two given type-compatible signal sources, depending on the current value of a condition signal source.
    At any point in time, choose(condition, x, y).getAsInt() == (this.getAsDouble() ? x : y).getAsInt() holds.
    
    Parameters:
    
    condition - the condition signal source
    
    inTrue - the signal source to consider when the value of the condition signal source is true
    
    inFalse - the signal source to consider when the value of the condition signal source is false
  - negate
```
default DoubleSignalSource negate()
```
    Returns a new signal source whose value is the negative of the value of this signal source.
    For a signal source that = this.negate(), at any point in time, that.getAsDouble() == -this.getAsDouble() holds.
  - add
```
default DoubleSignalSource add(DoubleSignalSource other)
```
    Returns a new signal source whose value is the sum of the simultaneous values of this and another signal source.
    At any point in time, this.add(other).getAsDouble() == this.getAsDouble() + other.getAsDouble() holds.
    
    Parameters:
    
    other - the other signal source to consider
  - multiply
```
default DoubleSignalSource multiply(DoubleSignalSource other)
```
    Returns a new signal source whose value is the product of the simultaneous values of this and another signal source.
    At any point in time, this.multiply(other).getAsDouble() == this.getAsDouble() * other.getAsDouble() holds.
    
    Parameters:
    
    other - the other signal source to consider
  - subtract
```
default DoubleSignalSource subtract(DoubleSignalSource other)
```
    Returns a new signal source whose value is the difference of the simultaneous values of this and another signal source.
    At any point in time, this.subtract(other).getAsDouble() == this.getAsDouble() - other.getAsDouble() holds.
    
    Parameters:
    
    other - the other signal source to consider
  - divide
```
default DoubleSignalSource divide(DoubleSignalSource other)
```
    Returns a new signal source whose value is the quotient of the simultaneous values of this and another signal source.
    At any point in time, this.divide(other).getAsDouble() == this.getAsDouble() / other.getAsDouble() holds.
    
    Parameters:
    
    other - the other signal source to consider
  - modulo
```
default DoubleSignalSource modulo(DoubleSignalSource other)
```
    Returns a new signal source whose value is the division remainder of the simultaneous values of this and another signal source.
    At any point in time, this.modulo(other).getAsDouble() == this.getAsDouble() % other.getAsDouble() holds.
    
    Parameters:
    
    other - the other signal source to consider
  - abs
```
default DoubleSignalSource abs()
```
    Returns a new signal source whose value is the absolute of the value of this signal source.
    At any point in time, this.abs().getAsDouble() == Math.abs(this.getAsDouble()) holds.
  - min
```
default DoubleSignalSource min(DoubleSignalSource other)
```
    Returns a new signal source whose value is the minimum of the simultaneous values of this and another signal source.
    At any point in time, this.min(other).getAsDouble() == Math.min(this.getAsDouble(), other.getAsDouble()) holds.
    
    Parameters:
    
    other - the other signal source to consider
  - max
```
default DoubleSignalSource max(DoubleSignalSource other)
```
    Returns a new signal source whose value is the maximum of the simultaneous values of this and another signal source.
    At any point in time, this.max(other).getAsDouble() == Math.max(this.getAsDouble(), other.getAsDouble()) holds.
    
    Parameters:
    
    other - the other signal source to consider
  - positive
```
default BooleanSignalSource positive()
```
    Returns a new signal source whose value is true iff the value of this signal source is a positive number.
    At any point in time, this.positive().getAsBoolean() == this.getAsDouble() > 0 holds.
  - negative
```
default BooleanSignalSource negative()
```
    Returns a new signal source whose value is true iff the value of this signal source is a negative number.
    At any point in time, this.positive().getAsBoolean() == this.getAsDouble() < 0 holds.
  - nonpositive
```
default BooleanSignalSource nonpositive()
```
    Returns a new signal source whose value is true iff the value of this signal source is a nonpositive number.
    At any point in time, this.positive().getAsBoolean() == this.getAsDouble() <= 0 holds.
  - nonnegative
```
default BooleanSignalSource nonnegative()
```
    Returns a new signal source whose value is true iff the value of this signal source is a nonnegative number.
    At any point in time, this.positive().getAsBoolean() == this.getAsDouble() >= 0 holds.
  - zero
```
default BooleanSignalSource zero()
```
    Returns a new signal source whose value is true iff the value of this signal source is the number zero.
    At any point in time, this.positive().getAsBoolean() == this.getAsDouble() == 0 holds.
  - nonzero
```
default BooleanSignalSource nonzero()
```
    Returns a new signal source whose value is true iff the value of this signal source is not the number zero.
    At any point in time, this.positive().getAsBoolean() == this.getAsDouble() != 0 holds.
  - lessThan
```
default BooleanSignalSource lessThan(DoubleSignalSource other)
```
    Returns a new signal source whose value is true iff the value of this signal source is less than the simultaneous value of another signal source.
    At any point in time, this.lessThan(other).getAsBoolean() == this.getAsDouble() < other.getAsDouble() holds.
    
    Parameters:
    
    other - the other signal source to consider
  - greaterThan
```
default BooleanSignalSource greaterThan(DoubleSignalSource other)
```
    Returns a new signal source whose value is true iff the value of this signal source is greater than the simultaneous value of another signal source.
    At any point in time, this.lessThan(other).getAsBoolean() == this.getAsDouble() > other.getAsDouble() holds.
    
    Parameters:
    
    other - the other signal source to consider
  - lessOrEqual
```
default BooleanSignalSource lessOrEqual(DoubleSignalSource other)
```
    Returns a new signal source whose value is true iff the value of this signal source is less than or equal to the simultaneous value of another signal source.
    At any point in time, this.lessOrEqua;(other).getAsBoolean() == this.getAsDouble() <= other.getAsDouble() holds.
    
    Parameters:
    
    other - the other signal source to consider
  - greaterOrEqual
```
default BooleanSignalSource greaterOrEqual(DoubleSignalSource other)
```
    Returns a new signal source whose value is true iff the value of this signal source is greater than or equal to the simultaneous value of another signal source.
    At any point in time, this.greaterOrEqual(other).getAsBoolean() == this.getAsDouble() >= other.getAsDouble() holds.
    
    Parameters:
    
    other - the other signal source to consider
  - equal
```
default BooleanSignalSource equal(DoubleSignalSource other)
```
    Returns a new signal source whose value is true iff the value of this signal source is equal to the simultaneous value of another signal source.
    At any point in time, this.equal(other).getAsBoolean() == this.getAsDouble() == other.getAsDouble() holds.
    
    Parameters:
    
    other - the other signal source to consider
  - nonEqual
```
default BooleanSignalSource nonEqual(DoubleSignalSource other)
```
    Returns a new signal source whose value is true iff the value of this signal source is not equal to the simultaneous value of another signal source.
    At any point in time, this.nonEqual(other).getAsBoolean() == this.getAsDouble() != other.getAsDouble() holds.
    
    Parameters:
    
    other - the other signal source to consider
  - defined
```
default BooleanSignalSource defined()
```
    Returns a new signal source whose value is true iff the value of this signal source is a valid number.
    At any point in time, this.defined().getAsBoolean() == !Double.isNan(this.getAsDouble()) holds.
  - notANumber
```
default BooleanSignalSource notANumber()
```
    Returns a new signal source whose value is true iff the value of this signal source is not a valid number.
    At any point in time, this.notANumber().getAsBoolean() == Double.isNan(this.getAsDouble()) holds.
  - sqrt
```
default DoubleSignalSource sqrt()
```
    Returns a new signal source whose value is the square root of the value of this signal source.
    At any point in time, this.sqrt().getAsDouble() == (double)Math.sqrt(this.getAsDouble()) holds.
    
    Parameters:
    
    other - the other signal source to consider
  - series
```
default DoubleClockedSignalSource series()
```
    Returns a signal source whose value at each clock index is the sum of all values of this signal source at all clock indices up to the current one.
    The sum is computed using Kahan's stable algorithm, which requires four additions per iteration.
  - glidingSum
```
default DoubleClockedSignalSource glidingSum(int width)
```
    Returns a signal source whose value at each clock index is the sum of values of this signal source at a fixed number of preceding clock indices, including to the current one.
    The sum is computed using Kahan's stable algorithm, which requires five additions per iteration.
    
    Parameters:
    
    width - the number of clock cycles to sum over
    
    Throws:
    
    NegativeArraySizeException - if width <= 0
  - glidingAverage
```
default DoubleClockedSignalSource glidingAverage(int width)
```
    Returns a signal source whose value at each clock index is the average of values of this signal source at a fixed number of preceding clock indices, including to the current one.
    The average is computed using Kahan's stable algorithm, which requires five additions and one division per iteration.
    
    Parameters:
    
    width - the number of clock cycles to average over
    
    Throws:
    
    NegativeArraySizeException - if width <= 0
  - glidingVariance
```
default DoubleClockedSignalSource glidingVariance(int width)
```
    Returns a signal source whose value at each clock index is the variance of values of this signal source at a fixed number of preceding clock indices, including to the current one.
    
    Parameters:
    
    width - the number of clock cycles to compute over
    
    Throws:
    
    NegativeArraySizeException - if width <= 0
  - glidingStandardDeviation
```
default DoubleClockedSignalSource glidingStandardDeviation(int width)
```
    Returns a signal source whose value at each clock index is the standard deviation of values of this signal source at a fixed number of preceding clock indices, including to the current one.
    
    Parameters:
    
    width - the number of clock cycles to compute over
    
    Throws:
    
    NegativeArraySizeException - if width <= 0
  - zeroCrossing
```
default BooleanClockedSignalSource zeroCrossing()
```
    Returns a signal source whose value at each clock index is true if the current value of this signal source has changed sign compared to its value at the preceding clock index.
    Corner cases, namly initial values, positive and negative zero, and NaNs, are handled robustly; they are not counted as sign changes.
  - selectAffine
```
@Deprecated
default DoubleSignalSource selectAffine(DoubleSignalSource onOne,
                                                    DoubleSignalSource onZero)
```
    Deprecated. FIXME
    
    Returns a new signal source whose value is the affine combination of the simultaneous values of two signal sources.
    At any point in time, selectAffine(s, a, b).getAsDouble() == s.getAsDouble() * a.getAsDouble() + (1 - s.getAsDouble()) * b.getAsDouble() holds.
  - choose
```
static <E extends Enum<E>> DoubleSignalSource choose(SignalSource<E> selector,
                                                     EnumMap<E,? extends DoubleSignalSource> cases)
```
    Returns a new signal source whose value is selected dynamically from a range of cases indexed by enum values.
    At any point in time, choose(s, m).getAsDouble() == m.get(s.get()).getAsDouble() holds.
    The given map cases is assumed to be immutable and to contain an entry for every possible value of the enum type E.
    
    Type Parameters:
    
    E - the type of enum values
    
    Parameters:
    
    selector - the signal source that provides the enum value
    
    cases - a map of enum values to signal sources to select from
  - choose
```
static <E extends Enum<E>> DoubleSignalSource choose(EnumSignalSource<E> selector,
                                                     EnumMap<E,? extends DoubleSignalSource> cases)
```
    Returns a new signal source whose value is selected dynamically from a range of cases indexed by enum values.
    At any point in time, choose(s, m).getAsDouble() == m.get(E.values()[s.getAsInt()]).getAsDouble() holds.
    The given map cases is assumed to be immutable and to contain an entry for every possible value of the enum type E.
    
    Type Parameters:
    
    E - the type of enum values
    
    Parameters:
    
    selector - the signal source that provides the ordinal number of the enum value
    
    cases - a map of enum values to signal sources to select from
  - choose
```
@SafeVarargs
static <E extends Enum<E>> DoubleSignalSource choose(EnumSignalSource<E> selector,
                                                                  DoubleSignalSource... cases)
```
    Returns a new signal source whose value is selected dynamically from a range of cases indexed by enum values.
    At any point in time, choose(s, a).getAsDouble() == m[s.getAsInt()].getAsDouble() holds.
    The given array cases is assumed to be immutable and to contain an element for every possible value of the enum type E.
    
    Type Parameters:
    
    E - the type of enum values
    
    Parameters:
    
    selector - the signal source that provides the enum value
    
    cases - an array signal sources to select from, in the definition order of enum elements
  - sampleAndHold
```
default DoubleClockedSignalSource sampleAndHold(BooleanSignalSource hold,
                                                double initialValue)
```
    Returns a new clocked signal source whose value at each clock tick is either the current value of this signal source (sample mode), or its own value at the previous clock tick (hold mode), depending on the current value of a given boolean signal source.
    
    Parameters:
    
    hold - a boolean signal source that, at each clock tick, selects hold mode if its value ist true, or sample mode if its value is false
    
    initialValue - the initial value to use if in hold mode at the first clock tick
  - power
```
@Undocumented
default DoubleClockedSignalSource power(BinaryOperator<DoubleSignalSource> op,
                                                      long n)
```
  - compileMainSignalSource
```
@Undocumented
default void compileMainSignalSource(CompilationContext context)
```
  - publishStoredValueVariable
```
@Undocumented
default void publishStoredValueVariable(CompilationContext context)
```

Interface DoubleSignalSource

Method Summary

Methods inherited from interface eu.bandm.sig.adlib2.compile.CompilableDataFlow

Method Detail

getAsDouble

getValueClass

getConstantAsDouble

hasConstantAsDouble

compileDataFlow

constant

map

zipWith

guard

relateWith

clock

invariant

stored

delayed

delayed

delayedFeedback

delayedFeedback

probe

choose

negate

add

multiply

subtract

divide

modulo

abs

min

max

positive

negative

nonpositive

nonnegative

zero

nonzero

lessThan

greaterThan

lessOrEqual

greaterOrEqual

equal

nonEqual

defined

notANumber

sqrt

series

glidingSum

glidingAverage

glidingVariance

glidingStandardDeviation

zeroCrossing

selectAffine

choose

choose

choose

sampleAndHold

power

compileMainSignalSource

publishStoredValueVariable