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 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.
        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>