Package 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 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.DoubleUnaryOperator

    andThen, compose

    Methods inherited from interface java.util.function.Function

    andThen, compose

  • Method Details

    • 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.
      See Also:
      UnaryOperator.identity()

    • negation

      static DoubleUnaryOperator negation()
      Returns a UnaryOperator that always returns the arithmetic negation of the input.
      Implementation Notes:
      As with all negation, be wary of unexpected behavior near the minimum value of the data type. For example, -Integer.MIN_VALUE will result in Integer.MIN_VALUE (still negative), as the positive value of Integer.MIN_VALUE is too big for int (it would be 1 greater then Integer.MAX_VALUE).

    • applyAsDouble

      @Deprecated default double applyAsDouble​(double x)
      Deprecated.
      Please use apply(double).
      Specified by:
      applyAsDouble in interface java.util.function.DoubleUnaryOperator
      Implementation Specification:
      This default implementation delegates to apply(double).

    • 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>