FunctionFG<T1, T2>

FunctionF<1>FunctionWithCachingFunctionReferences
public abstract class FunctionFG<T1, T2> : FunctionF<T1>
Abstract base function for binary operations. That is, functions which require two other functions as operands.
Type parameters:
T1 where Function
T2 where Function

Constructors

FunctionFG

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protected FunctionFG(IReader reader)
Parameters:
reader (IReader)

FunctionFG

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protected FunctionFG(Nomen nomen, T1 f, T2 g)
Parameters:
nomen (Nomen)
f (T1)
g (T2)

Properties

Derivative

public sealed override Function Derivative { get; }
Gets a function which is the derivative of this function. The returned function may be either analytic or approximate.
inherited fromFunctionWithCaching
Overrides: Function.Derivative

F

public T1 F { get; }
First operand.
inherited fromFunctionF<T1>

G

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public T2 G { get; }
Second operand.

Integral

public sealed override Function Integral { get; }
Gets a function which is the indefinite integral of this function. The returned function may be analytic or approximate. Note that numeric approximation of indefinite integrals is a slow and not particularly high quality process.
inherited fromFunctionWithCaching
Overrides: Function.Integral

Nomen

public sealed override Nomen Nomen { get; }
Gets a description of this function.
inherited fromFunctionWithCaching
Overrides: Function.Nomen

Notation

public override string Notation { get; }
Gets the notation for this function. Notation is aimed at humans and does not need to return a parseable string.
inherited fromFunctionWithCaching
Overrides: Function.Notation

Ui

public virtual FunctionUi Ui { get; }
Gets a UI object for modifying this function. This property may return null, not all functions must be editable.
inherited fromFunction

Methods

Asymptotes

public virtual Line[] Asymptotes()
Returns an array of *all* the non-vertical asymptotes for this function. This property may return both null and empty arrays, implying no asymptotes. Due to the nature of non-vertical asymptotes, there can only be a finite amount of them.
inherited fromFunction

AutoCoDomain

protected void AutoCoDomain(double x0, double x1, out double y0, out double y1, int samples = 100)
Compute the automatic codomain for a given domain.
inherited fromFunction
Parameters:
x0 (double)Domain start.
x1 (double)Domain end.
y0 (out double)Lowest value in codomain.
y1 (out double)Highest value in codomain.
samples (int = 100)Samples.

DomainEstimate

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public override void DomainEstimate(out double x0, out double x1, out double y0, out double y1)
Parameters:
x0 (out double)
x1 (out double)
y0 (out double)
y1 (out double)
Overrides: FunctionF<T1>.DomainEstimate

EmitDerivative

protected virtual Function EmitDerivative()
Override this method to provide an analytic derivative.
inherited fromFunctionWithCaching

EmitIntegral

protected virtual Function EmitIntegral()
Override this method to provide an analytic indefinite integral.
inherited fromFunctionWithCaching

Holes

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public override Interval[] Holes(double x0, double x1)
A binary operation is undefined wherever either operand is, and blows up wherever either operand does. Overridden because the unary base relays F alone, which would drop G's features silently.
Parameters:
x0 (double)
x1 (double)
Overrides: FunctionF<T1>.Holes

Integrate

public virtual double Integrate(double x0, double x1)
Evaluate the definite integral between two parameters. Unless a function specifically implements an analytic integral, this value will be approximate. Note to implementer: if you provide an analytic integral via the Function.Integral property, that function will be used to compute an analytic result. There is typically no reason to override this method.
inherited fromFunction
Parameters:
x0 (double)Integral start.
x1 (double)Integral end.
Returns: Definite integral from x0 to x1.

Poles

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public override Pole[] Poles(double x0, double x1)
A binary operation is undefined wherever either operand is, and blows up wherever either operand does. Overridden because the unary base relays F alone, which would drop G's features silently.
Parameters:
x0 (double)
x1 (double)
Overrides: FunctionF<T1>.Poles

Store

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public override void Store(IWriter writer)
Parameters:
writer (IWriter)
Overrides: FunctionF<T1>.Store

Y

public abstract double Y(double x)
Evaluate this function at a given x parameter. This method may return NaN values or even throw. The caller is responsible for handling any and all failure cases.
inherited fromFunction
Parameters:
x (double)Parameter.
Returns: f(x)

YYYY

public double[] YYYY(double[] x)
Evaluate a large amount of values. Functions may choose to use multiple threads to perform this calculation. This method should not throw, instead every failed evaluation will be represented by a NaN value.
inherited fromFunction
Parameters:
x (double[])Value to evaluate.
Returns: Evaluation results. Array will contain double.NaN entries for failed evaluations.