| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.math3.random; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| public class Well19937aTest extends RandomGeneratorAbstractTest { |
| |
| @Override |
| public RandomGenerator makeGenerator() { |
| return new Well19937a(100); |
| } |
| |
| @Test |
| public void testReferenceCode() { |
| int[] base = { |
| 740849862, 1202665156, -199039369, -259008301, -291878969, -1164428990, -1565918811, 491009864, |
| -1883086670, 1383450241, 1244617256, 689006653, -1576746370, -1307940314, 1421489086, 1742094000, |
| -595495729, 1047766204, 1875773301, -1637793284, 1379017098, 262792705, 191880010, -251000180, |
| -1753047622, -972355720, 90626881, 1644693418, 1503365577, 439653419, 1806361562, 1268823869 |
| }; |
| int[] init = new int[624]; |
| for (int i = 0; i < init.length; ++i) { |
| init[i] = base[i % base.length] + i; |
| } |
| Well19937a mt = new Well19937a(init); |
| int[] refInt = { |
| -612874471, -354976292, -1838197125, -1781560577, 278390997, 1214938280, -1752615390, -760835246, -1712883765, -241205782, -145390202, 495649160, -514388259, -1271015916, -1640000013, 849273623, |
| -549729394, -1206917255, -545909692, 811925434, -1665729633, -1525292882, 1416246482, -153220826, 1148868872, -326143196, 1724979062, 1790931148, -1648679618, -439051683, 112482777, -1484051520, |
| -1881272572, -1270447031, -1216102401, 1579107248, -1224395621, 2144411988, -416216641, -1529222361, 1628987080, 164445245, 1506928916, 928145916, 1436000427, 862025970, 560077705, -1887251027, |
| -514360858, 1735094506, 475624879, 1755802355, 295448361, -155399225, 3972415, 1368201076, -465126094, -1622687259, -246099304, 1798631152, -1937269102, -1700560396, -293352622, -896632303, |
| -2088933220, -194382452, -480218162, -1618517785, -1925031481, -150217434, 1678937261, 2130832364, -485546678, -1499224981, 1430390884, -1895417302, 210514746, 1781140999, -1940853105, -1238099647, |
| 485922557, -103223212, 633481679, -632946979, 695235541, -1661735272, 277603567, -958341538, 256982285, 1850270018, -327388076, -219053874, 1380560653, -1221689980, 1335863752, -545032383, |
| -575291735, -1295623907, -140058298, 1063302709, -1290702617, -790401546, -170630961, -1203114473, 1458063108, -1212753301, 1546428514, 2112636413, -1463028928, -1812598032, -883529486, 1131084094, |
| 62042165, 2135819802, -1192342739, 98361522, -1341042205, -475283063, -1632033747, 1745196892, 168608689, -914987039, 274428907, -881357258, 167940012, -1975737532, -903960486, -1370984244, |
| -589352935, 1783633514, -570111010, 71495377, 194463285, -1243905021, -1398490898, 221691209, -55728834, -638916786, -770622372, -1911651810, -295233027, 301467998, 2058638784, 681490183, |
| -1547865078, -1668135684, 1299261826, 1649468635, 287995017, -2076844852, 1193468826, -853948258, 120082777, 1051829542, -1288514343, -159456430, 275748820, -480127107, -604943233, -2138088332, |
| 1202614819, 1427201263, -1906344469, -1230779533, 1690367192, 733159097, 794410312, -1114452505, -1601554413, 976747949, 1517787154, 2091780205, 1052078906, 1919282771, -191013374, 1805397142, |
| 736939268, -1056272823, -727464316, -659459005, 797803875, -1104633884, 1042342081, -24514837, 1919469940, 1903722546, -814157872, 1605407665, -262351256, -288949635, 729204844, -1132605534, |
| 745453338, 387915035, 1094173337, 2100279147, 156863702, -257377544, -719587984, -1496015613, 1908993744, 2016957554, 918749666, -135963651, -1356808639, -1711185741, 1472589240, -398100149, |
| 628791415, -1381837652, -1820702771, -593586943, -1456631279, -1837975351, -1394249972, -556916726, 833231177, 43449750, 1029237092, -2086437337, -459463076, -533031784, -1739648287, -1374722961, |
| 2024908394, 1389678488, 2018558, -1391707864, -795935743, 904816957, 836583280, 1766194531, -1374431014, -904437876, 2030248636, -265724199, 2056758426, -810499837, 887193593, -77811488, |
| 1496312336, -1874348275, -456193866, -2137130942, 868120387, 29025455, -1999867716, 2001322335, -579152815, -390892056, 1592011837, -306394879, 93636886, -190879994, 1923358153, 269052141, |
| -396050253, -987531729, 480350991, 1276744541, -1445571957, -957571005, -2046270221, -1715395752, 1113585628, -1782113514, -697560146, 835320000, 1014320959, -2119834109, 460056841, -1464772991, |
| -1282790418, -2120806165, 86176097, -731086307, 832497517, -1876684928, 541008240, 551124479, -450919132, 647860281, -2115397586, 979247589, 1095559204, 1927958688, 169497703, 1999579054, |
| 2019745038, 1656022059, -1109662138, 375237154, 1450814436, 919988416, 849761266, 1457057327, 1771166577, -1639880487, -852488298, 1767063646, 657295386, -585561879, 740792583, 1664558308, |
| -654749506, 1109275990, 182597559, 1106789745, -1806628480, 25948116, 1748374299, 196057325, -164213209, 1687024594, 782029276, 1879737947, -1528219611, 412585737, 1190325629, 1985821911, |
| -1272945202, -1238637137, 465818730, -1537670961, 1131953615, 905623579, 609183424, 1138422991, 1522974699, 589719061, -1310894604, 890952933, -885204790, -393535694, 1238408670, 1780660354, |
| 677803525, -1121509064, 1553148616, 1109165936, -1450120385, 1525252521, -1354897489, -595402189, -1274551767, -869281409, 1788815975, 2020262116, 1124100185, -400839020, 310574108, 1354413045, |
| -1310514485, 1895732085, 626639054, 1667355357, 2065637178, -1889009143, -440157749, 1762849463, -1693853642, -56602956, -930874188, -398470740, 778356402, -2113156881, 42854964, 1844399604, |
| -2098310302, -1812029757, 1441188713, 899579267, 1266994172, 1841370863, -660740252, -43254718, 1124500192, 1884907320, 879997211, 1775139845, -1360112721, 1630490057, 362567879, 1113475029, |
| 290319279, -1209506867, 398146039, -957742350, 1185761854, 1519676447, -912689915, -1117128973, -305563462, -1928033363, -1766324543, 1702753492, 1696951912, -1895072395, 932663591, -566548128, |
| 991675996, 56529814, 980735023, 718166662, -650028466, -886842051, 1857048587, -569023569, -1820572202, -851452711, -958700452, -621825633, -65649888, -510143183, 761267599, -1692108035, |
| 1729071710, 1623630864, -53498654, 267235687, 659201413, 1152882627, -824194574, 356636960, -502391121, -538453360, 66115376, -1633290370, -1522088932, 268949070, 684499443, -859474501, |
| 1586764345, -1515639709, 319695602, -307025150, 69076508, 1050726785, -1340930110, 552191600, -207852941, -273572993, -539580440, 710343120, 1957076127, -1107172811, -561518280, -1775022699, |
| 1978792904, 1935531451, -2084046304, -419742902, -737652926, 614022023, 1676952428, 769892939, -1092786807, -1117113223, -266029995, -350150999, 207738542, 1964896575, 48805284, 1736500159, |
| 551289617, -1847923501, 1856609505, 2007480480, -681860219, -1198106493, 1483591043, -523895316, -1814473078, -1521087404, -1348859926, 1298056897, 1813789478, 946683654, 79196400, 1766250931, |
| 472737685, 1764634332, -1844726079, -130619045, -508713868, -1762537125, 1010108863, 170107098, 1705386380, -1139681802, 183739097, 1662699401, 1842694501, 1714633805, 46208876, 616720693, |
| -252553427, 1986302230, -103130254, 1943225981, 110746655, 553260552, 1588938073, -1934623163, -2144781332, -2086217416, 1941265852, -781953226, 1216234254, 605543697, -710872598, 2048636577, |
| -1986927728, -1007017623, 1243051501, -614249563, -2128221291, 581579813, 1173464240, -1906830937, 261329601, -1805974103, 769823490, 1858731164, -561762071, 516417430, -1221329437, -825500715, |
| 1091364656, -993658663, -1475434188, -1070804384, -1876492082, 899494424, 683486936, 878807455, 56642807, -1268202879, 1379172046, -1386869373, -1158233876, 1759190552, 1597629789, 1411151497, |
| -1254268471, 1075936979, -918778269, -2132675184, 953140888, 1906982077, 1154200766, -365384600, -1142488826, 708535121, -2134869964, -1531201665, -2100526761, 1268256467, 2071480803, 193135243, |
| 1374158182, 989505347, -933612202, -2134839213, -1302795271, -2092029041, 1812014826, 2090855917, 2005348528, 606434393, -60141386, 11156360, 539516285, -122485034, -893237911, -978127424, |
| 1509901816, -451029719, 428544700, -1622965963, -1993611605, -1989324583, 1104111587, -795138585, -899552401, -2110167769, -234502445, 1586963605, -503778455, 529261062, 325327284, -106186403, |
| 65369563, -1475700698, -228624261, 715975009, 1099352363, -1796883396, 1376542700, -308942420, -344940451, -395389249, -1562737166, 1869802677, 1273494710, 2075587668, -789570273, 1563347596, |
| 1142901755, 1676422422, -1729157809, -1399423717, -1814262429, -1809707284, 1393992342, -570246212, 1065528749, -781643849, 1218667301, -1097949471, 1305629790, 901301039, -704762030, 360582612, |
| 1411910672, 1848068741, -614500891, -146889637, -913903597, 723527277, -147033328, -199273155, 734997691, -2072735286, 2129258691, -1385074104, 931616624, 1065477319, -1543474555, -531410292, |
| -2123119121, -1538464113, -1153585193, 1559931968, -654877011, 879865200, 1489681397, 1998864644, -1964160144, 163671782, -858364148, -323324233, 801208648, 705864113, 436184243, 643773864, |
| 2087594507, 134637265, -749956494, -1657343972, -1828172168, -27357303, -1145161336, -1192513644, 216148260, 611393153, -13752671, -358631090, -1211920749, 593572064, 657629904, -1445961088, |
| -250704995, 1797542707, -2122311891, -316774825, -296303057, -868002056, -86697533, 2020588145, 1203427903, -1371839056, 669531557, -2031033836, 1323994690, 13703036, 785437772, -1465821554, |
| -694756014, -2131068154, -1745448876, -1095891733, 936594025, -1119068454, 855423970, 1705079340, -905640608, 162297141, 1336619311, -344353769, -92608588, -1080573824, 2002293105, -2088030765, |
| -1684198727, -129054718, -949437132, -127983221, -216664110, 1700146143, -711174649, 1500113839, 1212236226, -2017364219, -1263597675, 511929344, -323998524, -2021313185, 1803000924, 927670608, |
| 336267187, 1244256964, -1665390108, 991395134, -251232188, 1267445783, 1547951569, 740269916, 1776431169, 1687220659, 228229817, 271386089, -682906779, -438090344, 1190436796, -744272540, |
| 1879221151, 1145200306, -1730983338, -1119209309, 90826726, 1567861540, 1638852830, -1645384932, 1566909531, 1088584561, 1030555565, -1872052014, 720320695, -885053674, -321216789, 739907579, |
| 368580703, -443635520, 1232705619, -1355949988, -1047211249, -1571429448, 599299852, 1036970439, 1513838571, -51797291, -26647565, -1262878942, -916262582, 1579082269, -292007383, 1289013866, |
| -1612184284, 1451738668, 448608569, 476432992, -1229609565, 786372409, 929928149, -150100614, 448155944, -1322320576, -856549627, 1057443268, -1536809554, 577508258, 584906122, 275295163, |
| -604262071, -236043234, -1866434954, -2072447013, 646132876, 847562546, -310005953, -1104162658, 393261203, -730102354, 440824482, 1654535035, -1296359745, 1487359328, -977776604, -775827779, |
| -1298695106, 519080622, 1697162240, 227873031, -371123123, 1273702312, -1710063656, -2138342344, 1139555478, 1531578907, -1498880699, 1183507362, 1875307493, -1649740413, 2135386504, -962458407, |
| 424161768, 504272962, 202204247, 1783466420, 2015579232, -676642965, 2067456450, 914480415, -620398841, 1880405399, 1406637142, 1951104977, 633496157, 224861869, -58659291, 994942775, |
| -479000645, 1421449115, 100168104, 249754169, -1219011494, 1736303638, 364013694, -1750035055, -479217141, 1652913106, -2109452331, 1633842910, -1547663337, 936627493, -1152799743, 896955899, |
| -1407742850, -523769014, 357161414, 872293304, 744895980, 720829676, -240843156, -111779524, 1292836315, -1792141538, 1946959925, 1181751089, -1120674052, 1185192575, -1387002557, 1973209255, |
| -120887476, -766577735, -443913073, 786620227, 428564781, -101232106, -425959852, 198082021, 1173272226, -1744840378, -1621135606, -1539498583, -1101274572, 43399711, -1256764602, 1201920787, |
| 2049426139, 846545551, -2121520873, -1202939675, -470425740, 321987390, 1862019060, -951540342, -894238318, -430407175, -1662746491, 656574776, 1580373777, -431290218, 1645824323, -1953526979, |
| -374682356, 474291752, 1071558425, 511038981, -760598678, -567797285, -1176476266, -268409005, -2130644484, -67970563, 1756046948, 1429860462, -1130984739, -124916495, -1544436836, -1863524031, |
| 1024916487, -1388636482, -1573205065, 892628956, 1831270021, 1176430590, 1158914682, -2006787098, -1228130033, 1516111488, -1499151347, 470546266, 1642603981, 1425140838, -1823071475, -1775267236, |
| -1009380612, 164746986, 1129677098, 1842642579, -482342932, -507480364, 1656012309, 1981601761, -881042120, -511987083, 342447017, 381192578, 983008095, 741012865, -1877136350, -199211983, |
| -452784912, 1929572576, -1678291139, -864375281, -1610561247, -1936356726, -749553767, -865893512, -567081879, -1303973729, -939636958, -622974563, 428284937, 1049237414, 852280765, 86648946, |
| -1353851401, -1045422335, 898035731, -1636093996, -1083174191, 245046915, -359768226, -1028491655, 1051575118, 1774289451, 1839389415, -1594053468, 736707953, 1873556950, 401186168, -583669552, |
| -88375334, 2002752071, 264506453, -1304812107, -759203942, -114958524, -1878903503, 841613720, 1910863820, -1738114003, 701455920, 1791058048, -1850960547, 1672292671, 1172188809, 604848896, |
| -1607489375, 305370478, -948153885, -1971080100, -1848966954, -584538365, 39416319, -1689119162, 944942598, 1777111075, 1534005553, 2022718432, -25820385, 3077695, -315950520, 1859184648, |
| -1397829266, -1666371809, 858913807, -610818620, 1554973298, 580023809, -1662988256, -408630026, 1316681876, 738204271, 942829881, -758486983, 780345857, 667165037, -2086803585, 789741324 |
| }; |
| |
| for (int i = 0; i < refInt.length; ++i) { |
| Assert.assertEquals(refInt[i], mt.nextInt()); |
| } |
| |
| } |
| |
| } |
