Module java.base
Package java.util.function

## Interface LongToDoubleFunction

- 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 LongToDoubleFunction

  Represents a function that accepts a long-valued argument and produces a double-valued result. This is the `long`-to-`double` primitive specialization for `Function`.

  This is a functional interface whose functional method is `applyAsDouble(long)`.

  Since:
    1.8
  See Also:
    `Function`

- - ### Method Summary

    Modifier and Type | Method | Description
    --- | --- | ---
    `double` | `applyAsDouble​(long value)` | Applies this function to the given argument.

- - ### Method Detail

    - #### applyAsDouble

          double applyAsDouble​(long value)

      Applies this function to the given argument.
      Parameters:
        `value` - the function argument
      Returns:
        the function result