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 java.util.Arrays; 20 21 import org.apache.commons.rng.core.util.NumberFactory; 22 23 /** 24 * Creates a {@code long[]} from a {@code byte[]}. 25 * 26 * @since 1.0 27 */ 28 public class ByteArray2LongArray implements SeedConverter<byte[], long[]> { 29 /** Number of bytes in a {@code long}. */ 30 private static final int LONG_SIZE = 8; 31 32 /** {@inheritDoc} */ 33 @Override 34 public long[] convert(byte[] seed) { 35 final byte[] tmp = seed.length % LONG_SIZE == 0 ? 36 seed : 37 Arrays.copyOf(seed, LONG_SIZE * ((seed.length + LONG_SIZE - 1) / LONG_SIZE)); 38 39 return NumberFactory.makeLongArray(tmp); 40 } 41 }