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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.numbers.field;
18  
19  /**
20   * {@link Double} field.
21   */
22  public final class FP64Field extends AbstractField<FP64> {
23      /** 0d. */
24      private static final FP64 ZERO = FP64.of(0d);
25      /** 1d. */
26      private static final FP64 ONE = FP64.of(1d);
27      /** Singleton. */
28      private static final FP64Field INSTANCE = new FP64Field();
29  
30      /** Singleton. */
31      private FP64Field() {}
32  
33      /**
34       * Get the field instance.
35       *
36       * @return the field instance.
37       */
38      public static FP64Field get() {
39          return INSTANCE;
40      }
41  
42      /** {@inheritDoc} */
43      @Override
44      public FP64 one() {
45          return ONE;
46      }
47  
48      /** {@inheritDoc} */
49      @Override
50      public FP64 zero() {
51          return ZERO;
52      }
53  }