it.unimi.dsi.fastutil.doubles

Interface DoubleUnaryOperator

All Superinterfaces:

java.util.function.DoubleUnaryOperator, java.util.function.Function<java.lang.Double,java.lang.Double>, java.util.function.UnaryOperator<java.lang.Double>

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 DoubleUnaryOperator
extends java.util.function.UnaryOperator<java.lang.Double>, java.util.function.DoubleUnaryOperator

A type-specific UnaryOperator; provides methods operating both on objects and on primitives.

Since:

8.5.0

See Also:

UnaryOperator

Method Summary

Modifier and Type	Method and Description
double	apply(double x) Computes the operator on the given input.
default java.lang.Double	apply(java.lang.Double x) Deprecated. Please use the corresponding type-specific method instead.
default double	applyAsDouble(double x) Deprecated. Please use apply(double).
static DoubleUnaryOperator	identity() Returns a UnaryOperator that always returns the input unmodified.
static DoubleUnaryOperator	negation() Returns a UnaryOperator that always returns the arithmetic negation of the input.

Methods inherited from interface java.util.function.Function

andThen, compose

Methods inherited from interface java.util.function.DoubleUnaryOperator

andThen, compose

Method Detail

apply

double apply(double x)

Computes the operator on the given input.

Parameters:

x - the input.

Returns:

the output of the operator on the given input.

identity

static DoubleUnaryOperator identity()

Returns a UnaryOperator that always returns the input unmodified.

Specified by:

identity in interface java.util.function.DoubleUnaryOperator

Specified by:

identity in interface java.util.function.Function<java.lang.Double,java.lang.Double>

Specified by:

identity in interface java.util.function.UnaryOperator<java.lang.Double>

See Also:

UnaryOperator.identity()

negation

static DoubleUnaryOperator negation()

Returns a UnaryOperator that always returns the arithmetic negation of the input.

applyAsDouble

@Deprecated
default double applyAsDouble(double x)

Deprecated. Please use apply(double).

Specified by:

applyAsDouble in interface java.util.function.DoubleUnaryOperator

apply

@Deprecated
default java.lang.Double apply(java.lang.Double x)

Deprecated. Please use the corresponding type-specific method instead.

Specified by:

apply in interface java.util.function.Function<java.lang.Double,java.lang.Double>