10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package java.util.function;
26
27 /**
28 * An operation on two {@code double} operands yielding a {@code double} result.
29 *
30 * @since 1.8
31 */
32 public interface DoubleBinaryOperator /* extends BinaryOperator<Double> */ {
33 //
34 // @Override
35 // public default Double operate(Double left, Double right) { return operateAsDouble((double) left, (double) right); }
36
37 /**
38 * Returns the {@code double} result of the operation upon the
39 * {@code double} operands. The parameters are named {@code left} and
40 * {@code right} for operations where the order of parameters matters.
41 *
42 * @param left the left operand value
43 * @param right the right operand value
44 * @return the result of the operation
45 */
46 public double operateAsDouble(double left, double right);
47 }
|
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package java.util.function;
26
27 /**
28 * An operation on two {@code double} operands yielding a {@code double} result.
29 *
30 * <p/>This is the primitive type specialization of {@link BinaryOperator} for
31 * {@code double} and also may be used as a {@code BinaryOperator<Double>}. When
32 * used as a {@code BinaryOperator} the default {@code operate} implementation
33 * provided by this interface neither accepts null parameters nor does it return
34 * null results.
35 *
36 * @since 1.8
37 */
38 public interface DoubleBinaryOperator extends BinaryOperator<Double> {
39
40 /**
41 * {@inheritDoc}
42 *
43 * @param left {@inheritDoc}, must be non-null
44 * @param right {@inheritDoc}, must be non-null
45 * @return {@inheritDoc}, always non-null
46 */
47 @Override
48 public default Double operate(Double left, Double right) {
49 return operateAsDouble((double)left, (double)right);
50 }
51
52 /**
53 * Returns the {@code double} result of the operation upon the
54 * {@code double} operands. The parameters are named {@code left} and
55 * {@code right} for operations where the order of parameters matters.
56 *
57 * @param left the left operand value
58 * @param right the right operand value
59 * @return the result of the operation
60 */
61 public double operateAsDouble(double left, double right);
62 }
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