25 package java.util.function;
  26 
  27 /**
  28  * An operation on a single {@code long} operand yielding a {@code long} result.
  29  * This is the primitive type specialization of {@link UnaryOperator} for
  30  * {@code long}.
  31  *
  32  * @see UnaryOperator
  33  * @since 1.8
  34  */
  35 @FunctionalInterface
  36 public interface LongUnaryOperator {
  37 
  38     /**
  39      * Returns the {@code long} result of the operation upon the {@code long}
  40      * operand.
  41      *
  42      * @param operand the operand value
  43      * @return the operation result value
  44      */
  45     public long applyAsLong(long operand);









  46 }

  25 package java.util.function;
  26 
  27 /**
  28  * An operation on a single {@code long} operand yielding a {@code long} result.
  29  * This is the primitive type specialization of {@link UnaryOperator} for
  30  * {@code long}.
  31  *
  32  * @see UnaryOperator
  33  * @since 1.8
  34  */
  35 @FunctionalInterface
  36 public interface LongUnaryOperator {
  37 
  38     /**
  39      * Returns the {@code long} result of the operation upon the {@code long}
  40      * operand.
  41      *
  42      * @param operand the operand value
  43      * @return the operation result value
  44      */
  45     long applyAsLong(long operand);
  46 
  47     /**
  48      * Returns a unary operator that provides its input value as the result.
  49      *
  50      * @return a unary operator that provides its input value as the result
  51      */
  52     static LongUnaryOperator identity() {
  53         return t -> t;
  54     }
  55 }