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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.rng.simple.internal;
18  
19  import org.apache.commons.rng.core.util.NumberFactory;
20  
21  /**
22   * Creates a {@code long[]} from an {@code int[]}.
23   *
24   * @since 1.0
25   */
26  public class IntArray2LongArray implements SeedConverter<int[], long[]> {
27      /** {@inheritDoc} */
28      @Override
29      public long[] convert(int[] seed) {
30          final int outSize = (seed.length + 1) / 2;
31          final long[] out = new long[outSize];
32          for (int i = 0; i < outSize; i++) {
33              final int lo = seed[i];
34              final int hi = outSize + i < seed.length ? seed[outSize + i] : 0;
35              out[i] = NumberFactory.makeLong(hi, lo);
36          }
37  
38          return out;
39      }
40  }