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
18 package org.apache.commons.rng.core.source32;
19
20 import org.apache.commons.rng.core.RandomAssert;
21 import org.junit.jupiter.api.Test;
22
23 class PcgMcgXshRs32Test {
24 @Test
25 void testReferenceCode() {
26 /*
27 * Tested with respect to pcg_engines::mcg_xsh_rs_64_32 of the C++ implementation.
28 * See : http://www.pcg-random.org/download.html#cpp-implementation
29 */
30 final int[] expectedSequence = {
31 0xb786f832, 0x6920834f, 0x5b88b399, 0x6b811447,
32 0x91230c70, 0x163c83b5, 0x8dd8bba9, 0xb8bcd10a,
33 0xe1964b6e, 0x40b9adc8, 0x75fbee87, 0xed3d1e5c,
34 0x82cb437b, 0xea94cea8, 0x76b1726a, 0x9275544a,
35 0xed015249, 0x9d46c1cc, 0xe6fddd59, 0x487a0912,
36 0xa709c922, 0xd15ac2a2, 0xba36e687, 0x3e40b099,
37 0x62ae602c, 0xec0ebb27, 0x94246eda, 0xa40c2daa,
38 0xd7e0abb5, 0xf8061587, 0x97f2132a, 0x861cfa5e,
39 0xc5b2280b, 0x5fc8ec4e, 0xa9e552ed, 0xbf2ee34f,
40 0x0a945eb3, 0x9e578662, 0x292cf72c, 0xc7e04668,
41 };
42 RandomAssert.assertEquals(expectedSequence, new PcgMcgXshRs32(0x012de1babb3c4104L));
43 }
44 }