Package net.algart.math.functions

Class LinearFunc.Updatable

java.lang.Object

net.algart.math.functions.LinearFunc

net.algart.math.functions.LinearFunc.Updatable

All Implemented Interfaces:

Func, Func.Updatable

Enclosing class:

LinearFunc

public static class LinearFunc.Updatable
extends LinearFunc
implements Func.Updatable

Updatable extension of the linear function with one argument.

Nested Class Summary

Nested classes/interfaces inherited from class net.algart.math.functions.LinearFunc

LinearFunc.Updatable

Nested classes/interfaces inherited from interface net.algart.math.functions.Func

Func.Updatable

Field Summary

Fields inherited from interface net.algart.math.functions.Func

ABS, ABS_DIFF, HALF_X_MINUS_Y, HALF_X_PLUS_Y, HALF_Y_MINUS_X, IDENTITY, MAX, MIN, POSITIVE_DIFF, REVERSE, SELECT, SELECT_FROM_8_DIRECTIONS_2D, SELECT_IF_GREATER, SELECT_IF_GREATER_OR_EQUAL, SHIFTS_ALONG_8_DIRECTIONS_2D, UPDATABLE_IDENTITY, X_MINUS_Y, X_PLUS_Y, Y_MINUS_X

Method Summary

Modifier and Type	Method	Description
double	get()	Equivalent to get(new double[0]).
double	get(double x0)	Equivalent to get(new double[] {x0}).
double	get(double... x)	Returns the result of this function for the given arguments: f(x0, x1, ..., xx.length-1).
double	get(double x0, double x1)	Equivalent to get(new double[] {x0, x1}).
double	get(double x0, double x1, double x2)	Equivalent to get(new double[] {x0, x1, x2}).
double	get(double x0, double x1, double x2, double x3)	Equivalent to get(new double[] {x0, x1, x2, x3}).
void	set(double[] x, double newResult)	Correct some of x arguments so that get(x) will be, as possible, equal to newResult.

Methods inherited from class net.algart.math.functions.LinearFunc

a, a, b, getAveragingInstance, getInstance, getInstance, getNonweightedInstance, getUpdatableInstance, isNonweighted, n, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Details

get

public double get(double... x)

Description copied from interface: Func

Returns the result of this function for the given arguments: f(x₀, x₁, ..., x_x.length-1).

This method must not change the values of x elements!

Specified by:

get in interface Func

Specified by:

get in class LinearFunc

Parameters:

x - the function arguments.

Returns:

the function result.

get

public double get()

Description copied from interface: Func

Equivalent to get(new double[0]). Provides better performance because it does not require Java array creation.

Specified by:

get in interface Func

Specified by:

get in class LinearFunc

Returns:

the function result.

get

public double get(double x0)

Description copied from interface: Func

Equivalent to get(new double[] {x0}). Provides better performance because it does not require Java array creation.

Specified by:

get in interface Func

Specified by:

get in class LinearFunc

Parameters:

x0 - the function argument.

Returns:

the function result.

get

public double get(double x0,
 double x1)

Description copied from interface: Func

Equivalent to get(new double[] {x0, x1}). Provides better performance because it does not require Java array creation.

Specified by:

get in interface Func

Specified by:

get in class LinearFunc

Parameters:

x0 - the first function argument.

x1 - the second function argument.

Returns:

the function result.

get

public double get(double x0,
 double x1,
 double x2)

Description copied from interface: Func

Equivalent to get(new double[] {x0, x1, x2}). Provides better performance because it does not require Java array creation.

Specified by:

get in interface Func

Specified by:

get in class LinearFunc

Parameters:

x0 - the first function argument.

x1 - the second function argument.

x2 - the third function argument.

Returns:

the function result.

get

public double get(double x0,
 double x1,
 double x2,
 double x3)

Description copied from interface: Func

Equivalent to get(new double[] {x0, x1, x2, x3}). Provides better performance because it does not require Java array creation.

Specified by:

get in interface Func

Specified by:

get in class LinearFunc

Parameters:

x0 - the first function argument.

x1 - the second function argument.

x2 - the third function argument.

x3 - the fourth function argument.

Returns:

the function result.

set

public void set(double[] x,
 double newResult)

Description copied from interface: Func.Updatable

Correct some of x arguments so that get(x) will be, as possible, equal to newResult. For example, if this is one-argument function f(x), and its inverse function is g(y) (g(f(x))=x), then this method should assign x[0]=g(newResult).

This method does not guarantee the precise equality get(x)==newResult. (Usually, it is impossible due to limited precision of floating-point calculations.) But this method should try to provide this equality (after its call) with, as possible, maximal possible precision.

Specified by:

set in interface Func.Updatable

Parameters:

x - the function arguments.

newResult - the desired function result.