wsemi

<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>pseudoRandom.mjs - Documentation</title> <script src="scripts/prettify/prettify.js"></script> <script src="scripts/prettify/lang-css.js"></script>  <link type="text/css" rel="stylesheet" href="styles/prettify.css"> <link type="text/css" rel="stylesheet" href="styles/jsdoc.css"> <script src="scripts/nav.js" defer></script> <meta name="viewport" content="width=device-width, initial-scale=1.0"> </head> <body> <input type="checkbox" id="nav-trigger" class="nav-trigger" /> <label for="nav-trigger" class="navicon-button x"> <div class="navicon"></div> </label> <label for="nav-trigger" class="overlay"></label> <nav > <h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="wsemi.html">wsemi</a><ul class='methods'><li data-type='method'><a href="wsemi.html#.ab2blob">ab2blob</a></li><li data-type='method'><a href="wsemi.html#.ab2u8arr">ab2u8arr</a></li><li data-type='method'><a href="wsemi.html#.addExcelWorksheetFromData">addExcelWorksheetFromData</a></li><li data-type='method'><a href="wsemi.html#.addMonth">addMonth</a></li><li data-type='method'><a href="wsemi.html#.aes2str">aes2str</a></li><li data-type='method'><a href="wsemi.html#.alive">alive</a></li><li data-type='method'><a href="wsemi.html#.arr2dt">arr2dt</a></li><li data-type='method'><a href="wsemi.html#.arrAccum">arrAccum</a></li><li data-type='method'><a href="wsemi.html#.arrAdd">arrAdd</a></li><li data-type='method'><a href="wsemi.html#.arrAt">arrAt</a></li><li data-type='method'><a href="wsemi.html#.arrDiff">arrDiff</a></li><li data-type='method'><a href="wsemi.html#.arrFilterByKeywords">arrFilterByKeywords</a></li><li data-type='method'><a href="wsemi.html#.arrFilterByNum">arrFilterByNum</a></li><li data-type='method'><a href="wsemi.html#.arrFilterByPnum">arrFilterByPnum</a></li><li data-type='method'><a href="wsemi.html#.arrFilterByPnumAndToLog">arrFilterByPnumAndToLog</a></li><li data-type='method'><a href="wsemi.html#.arrFind">arrFind</a></li><li data-type='method'><a href="wsemi.html#.arrGroupByMaxmin">arrGroupByMaxmin</a></li><li data-type='method'><a href="wsemi.html#.arrHas">arrHas</a></li><li data-type='method'><a href="wsemi.html#.arrInsert">arrInsert</a></li><li data-type='method'><a href="wsemi.html#.arrLookupByMaxmin">arrLookupByMaxmin</a></li><li data-type='method'><a href="wsemi.html#.arrMax">arrMax</a></li><li data-type='method'><a href="wsemi.html#.arrMin">arrMin</a></li><li data-type='method'><a href="wsemi.html#.arrMulti">arrMulti</a></li><li data-type='method'><a href="wsemi.html#.arrNorm">arrNorm</a></li><li data-type='method'><a href="wsemi.html#.arrProduct">arrProduct</a></li><li data-type='method'><a href="wsemi.html#.arrReduce">arrReduce</a></li><li data-type='method'><a href="wsemi.html#.arrSep">arrSep</a></li><li data-type='method'><a href="wsemi.html#.arrSort">arrSort</a></li><li data-type='method'><a href="wsemi.html#.asind">asind</a></li><li data-type='method'><a href="wsemi.html#.atan2d">atan2d</a></li><li data-type='method'><a href="wsemi.html#.atand">atand</a></li><li data-type='method'><a href="wsemi.html#.attstr">attstr</a></li><li data-type='method'><a href="wsemi.html#.b642obj">b642obj</a></li><li data-type='method'><a href="wsemi.html#.b642str">b642str</a></li><li data-type='method'><a href="wsemi.html#.b642u16arr">b642u16arr</a></li><li data-type='method'><a href="wsemi.html#.b642u8arr">b642u8arr</a></li><li data-type='method'><a href="wsemi.html#.binstr">binstr</a></li><li data-type='method'><a href="wsemi.html#.blob2ab">blob2ab</a></li><li data-type='method'><a href="wsemi.html#.blob2b64">blob2b64</a></li><li data-type='method'><a href="wsemi.html#.blob2str">blob2str</a></li><li data-type='method'><a href="wsemi.html#.blob2u8arr">blob2u8arr</a></li><li data-type='method'><a href="wsemi.html#.blobs2b64s">blobs2b64s</a></li><li data-type='method'><a href="wsemi.html#.blobs2u8arrs">blobs2u8arrs</a></li><li data-type='method'><a href="wsemi.html#.bodyLog">bodyLog</a></li><li data-type='method'><a href="wsemi.html#.browserView">browserView</a></li><li data-type='method'><a href="wsemi.html#.browserViewFromBlob">browserViewFromBlob</a></li><li data-type='method'><a href="wsemi.html#.browserViewFromText">browserViewFromText</a></li><li data-type='method'><a href="wsemi.html#.browserViewFromU8arr">browserViewFromU8arr</a></li><li data-type='method'><a href="wsemi.html#.bs2u8arr">bs2u8arr</a></li><li data-type='method'><a href="wsemi.html#.bufRead">bufRead</a></li><li data-type='method'><a href="wsemi.html#.bufReadDbl">bufReadDbl</a></li><li data-type='method'><a href="wsemi.html#.bufWrite">bufWrite</a></li><li data-type='method'><a href="wsemi.html#.bufWriteDbl">bufWriteDbl</a></li><li data-type='method'><a href="wsemi.html#.cache">cache</a></li><li data-type='method'><a href="wsemi.html#.cbol">cbol</a></li><li data-type='method'><a href="wsemi.html#.cdbl">cdbl</a></li><li data-type='method'><a href="wsemi.html#.cfilesize">cfilesize</a></li><li data-type='method'><a href="wsemi.html#.cfinancial">cfinancial</a></li><li data-type='method'><a href="wsemi.html#.cint">cint</a></li><li data-type='method'><a href="wsemi.html#.clearXSS">clearXSS</a></li><li data-type='method'><a href="wsemi.html#.color">color</a></li><li data-type='method'><a href="wsemi.html#.composeToTree">composeToTree</a></li><li data-type='method'><a href="wsemi.html#.convertToTree">convertToTree</a></li><li data-type='method'><a href="wsemi.html#.copyStrToClipboard">copyStrToClipboard</a></li><li data-type='method'><a href="wsemi.html#.cosd">cosd</a></li><li data-type='method'><a href="wsemi.html#.cotd">cotd</a></li><li data-type='method'><a href="wsemi.html#.createExcelWorkbook">createExcelWorkbook</a></li><li data-type='method'><a href="wsemi.html#.cscd">cscd</a></li><li data-type='method'><a href="wsemi.html#.cstr">cstr</a></li><li data-type='method'><a href="wsemi.html#.day2cht">day2cht</a></li><li data-type='method'><a href="wsemi.html#.debounce">debounce</a></li><li data-type='method'><a href="wsemi.html#.delay">delay</a></li><li data-type='method'><a href="wsemi.html#.dig">dig</a></li><li data-type='method'><a href="wsemi.html#.digExp">digExp</a></li><li data-type='method'><a href="wsemi.html#.domAlert">domAlert</a></li><li data-type='method'><a href="wsemi.html#.domAppend">domAppend</a></li><li data-type='method'><a href="wsemi.html#.domCancelEvent">domCancelEvent</a></li><li data-type='method'><a href="wsemi.html#.domCompareText">domCompareText</a></li><li data-type='method'><a href="wsemi.html#.domCompareTextDyn">domCompareTextDyn</a></li><li data-type='method'><a href="wsemi.html#.domConvertToPic">domConvertToPic</a></li><li data-type='method'><a href="wsemi.html#.domConvertToPicDyn">domConvertToPicDyn</a></li><li data-type='method'><a href="wsemi.html#.domDetect">domDetect</a></li><li data-type='method'><a href="wsemi.html#.domDrag">domDrag</a></li><li data-type='method'><a href="wsemi.html#.domDragBarAndScroll">domDragBarAndScroll</a></li><li data-type='method'><a href="wsemi.html#.domDragPreview">domDragPreview</a></li><li data-type='method'><a href="wsemi.html#.domDropFiles">domDropFiles</a></li><li data-type='method'><a href="wsemi.html#.domElementsFromPoint">domElementsFromPoint</a></li><li data-type='method'><a href="wsemi.html#.domFadeIn">domFadeIn</a></li><li data-type='method'><a href="wsemi.html#.domFadeOut">domFadeOut</a></li><li data-type='method'><a href="wsemi.html#.domFind">domFind</a></li><li data-type='method'><a href="wsemi.html#.domFinds">domFinds</a></li><li data-type='method'><a href="wsemi.html#.domGetAttr">domGetAttr</a></li><li data-type='method'><a href="wsemi.html#.domGetBoudRect">domGetBoudRect</a></li><li data-type='method'><a href="wsemi.html#.domGetBoudRectRefSelf">domGetBoudRectRefSelf</a></li><li data-type='method'><a href="wsemi.html#.domGetFileAccept">domGetFileAccept</a></li><li data-type='method'><a href="wsemi.html#.domGetFiles">domGetFiles</a></li><li data-type='method'><a href="wsemi.html#.domGetParents">domGetParents</a></li><li data-type='method'><a href="wsemi.html#.domGetPointFromEvent">domGetPointFromEvent</a></li><li data-type='method'><a href="wsemi.html#.domGetScrollableParent">domGetScrollableParent</a></li><li data-type='method'><a href="wsemi.html#.domGetWindowSize">domGetWindowSize</a></li><li data-type='method'><a href="wsemi.html#.domIsClientXYIn">domIsClientXYIn</a></li><li data-type='method'><a href="wsemi.html#.domIsFocused">domIsFocused</a></li><li data-type='method'><a href="wsemi.html#.domIsVisible">domIsVisible</a></li><li data-type='method'><a href="wsemi.html#.domPrepend">domPrepend</a></li><li data-type='method'><a href="wsemi.html#.domRemove">domRemove</a></li><li data-type='method'><a href="wsemi.html#.domRenderMarkdownMind">domRenderMarkdownMind</a></li><li data-type='method'><a href="wsemi.html#.domRenderMarkdownMindDyn">domRenderMarkdownMindDyn</a></li><li data-type='method'><a href="wsemi.html#.domRipple">domRipple</a></li><li data-type='method'><a href="wsemi.html#.domScrollIntoView">domScrollIntoView</a></li><li data-type='method'><a href="wsemi.html#.domScrollTo">domScrollTo</a></li><li data-type='method'><a href="wsemi.html#.domShowImages">domShowImages</a></li><li data-type='method'><a href="wsemi.html#.domShowImagesDyn">domShowImagesDyn</a></li><li data-type='method'><a href="wsemi.html#.domShowInputAndGetFiles">domShowInputAndGetFiles</a></li><li data-type='method'><a href="wsemi.html#.domShowInputAndGetFilesU8Arrs">domShowInputAndGetFilesU8Arrs</a></li><li data-type='method'><a href="wsemi.html#.domTooltip">domTooltip</a></li><li data-type='method'><a href="wsemi.html#.domTriggerEvent">domTriggerEvent</a></li><li data-type='method'><a href="wsemi.html#.domVirtualCreate">domVirtualCreate</a></li><li data-type='method'><a href="wsemi.html#.domVirtualCreateQueue">domVirtualCreateQueue</a></li><li data-type='method'><a href="wsemi.html#.downloadExcelFileFromData">downloadExcelFileFromData</a></li><li data-type='method'><a href="wsemi.html#.downloadExcelFileFromDataDyn">downloadExcelFileFromDataDyn</a></li><li data-type='method'><a href="wsemi.html#.downloadFileFromB64">downloadFileFromB64</a></li><li data-type='method'><a href="wsemi.html#.downloadFileFromBlob">downloadFileFromBlob</a></li><li data-type='method'><a href="wsemi.html#.downloadFileFromText">downloadFileFromText</a></li><li data-type='method'><a href="wsemi.html#.downloadFileFromU8Arr">downloadFileFromU8Arr</a></li><li data-type='method'><a href="wsemi.html#.dtmapping">dtmapping</a></li><li data-type='method'><a href="wsemi.html#.dtpick">dtpick</a></li><li data-type='method'><a href="wsemi.html#.evem">evem</a></li><li data-type='method'><a href="wsemi.html#.execProcess">execProcess</a></li><li data-type='method'><a href="wsemi.html#.execScript">execScript</a></li><li data-type='method'><a href="wsemi.html#.f2c">f2c</a></li><li data-type='method'><a href="wsemi.html#.filepathToTree">filepathToTree</a></li><li data-type='method'><a href="wsemi.html#.files2data">files2data</a></li><li data-type='method'><a href="wsemi.html#.flattenToConn">flattenToConn</a></li><li data-type='method'><a href="wsemi.html#.flattenTree">flattenTree</a></li><li data-type='method'><a href="wsemi.html#.fsCleanFolder">fsCleanFolder</a></li><li data-type='method'><a href="wsemi.html#.fsCopyFolder">fsCopyFolder</a></li><li data-type='method'><a href="wsemi.html#.fsCreateFile">fsCreateFile</a></li><li data-type='method'><a href="wsemi.html#.fsCreateFolder">fsCreateFolder</a></li><li data-type='method'><a href="wsemi.html#.fsDeleteFile">fsDeleteFile</a></li><li data-type='method'><a href="wsemi.html#.fsDeleteFolder">fsDeleteFolder</a></li><li data-type='method'><a href="wsemi.html#.fsEvem">fsEvem</a></li><li data-type='method'><a href="wsemi.html#.fsGetFilesInFolder">fsGetFilesInFolder</a></li><li data-type='method'><a href="wsemi.html#.fsGetFoldersInFolder">fsGetFoldersInFolder</a></li><li data-type='method'><a href="wsemi.html#.fsIsFile">fsIsFile</a></li><li data-type='method'><a href="wsemi.html#.fsIsFolder">fsIsFolder</a></li><li data-type='method'><a href="wsemi.html#.fsReadText">fsReadText</a></li><li data-type='method'><a href="wsemi.html#.fsRenameFile">fsRenameFile</a></li><li data-type='method'><a href="wsemi.html#.fsRenameFolder">fsRenameFolder</a></li><li data-type='method'><a href="wsemi.html#.fsTreeFolder">fsTreeFolder</a></li><li data-type='method'><a href="wsemi.html#.fsWatchFile">fsWatchFile</a></li><li data-type='method'><a href="wsemi.html#.fsWriteText">fsWriteText</a></li><li data-type='method'><a href="wsemi.html#.genGradientColor">genGradientColor</a></li><li data-type='method'><a href="wsemi.html#.genID">genID</a></li><li data-type='method'><a href="wsemi.html#.genPm">genPm</a></li><li data-type='method'><a href="wsemi.html#.getBufferSize">getBufferSize</a></li><li data-type='method'><a href="wsemi.html#.getClearPathName">getClearPathName</a></li><li data-type='method'><a href="wsemi.html#.getCsvStrFromData">getCsvStrFromData</a></li><li data-type='method'><a href="wsemi.html#.getDataFromExcelFileU8Arr">getDataFromExcelFileU8Arr</a></li><li data-type='method'><a href="wsemi.html#.getDataFromExcelFileU8ArrDyn">getDataFromExcelFileU8ArrDyn</a></li><li data-type='method'><a href="wsemi.html#.getDirName">getDirName</a></li><li data-type='method'><a href="wsemi.html#.getEnv">getEnv</a></li><li data-type='method'><a href="wsemi.html#.getExcelU8ArrFromData">getExcelU8ArrFromData</a></li><li data-type='method'><a href="wsemi.html#.getExcelU8ArrFromWorkbook">getExcelU8ArrFromWorkbook</a></li><li data-type='method'><a href="wsemi.html#.getExcelWorkbookFromData">getExcelWorkbookFromData</a></li><li data-type='method'><a href="wsemi.html#.getExcelWorkbookFromWorksheet">getExcelWorkbookFromWorksheet</a></li><li data-type='method'><a href="wsemi.html#.getExcelWorksheetFromData">getExcelWorksheetFromData</a></li><li data-type='method'><a href="wsemi.html#.getFileAccept">getFileAccept</a></li><li data-type='method'><a href="wsemi.html#.getFileName">getFileName</a></li><li data-type='method'><a href="wsemi.html#.getFileTrueName">getFileTrueName</a></li><li data-type='method'><a href="wsemi.html#.getGlobal">getGlobal</a></li><li data-type='method'><a href="wsemi.html#.getObjSize">getObjSize</a></li><li data-type='method'><a href="wsemi.html#.getTimeBetween">getTimeBetween</a></li><li data-type='method'><a href="wsemi.html#.getTimeFromUnit">getTimeFromUnit</a></li><li data-type='method'><a href="wsemi.html#.getTimeObject">getTimeObject</a></li><li data-type='method'><a href="wsemi.html#.getTimeRange">getTimeRange</a></li><li data-type='method'><a href="wsemi.html#.getUserAgent">getUserAgent</a></li><li data-type='method'><a href="wsemi.html#.getUserAgentDyn">getUserAgentDyn</a></li><li data-type='method'><a href="wsemi.html#.getltdtkeys">getltdtkeys</a></li><li data-type='method'><a href="wsemi.html#.haskey">haskey</a></li><li data-type='method'><a href="wsemi.html#.html2pic">html2pic</a></li><li data-type='method'><a href="wsemi.html#.html2picDyn">html2picDyn</a></li><li data-type='method'><a href="wsemi.html#.html2str">html2str</a></li><li data-type='method'><a href="wsemi.html#.html2strDyn">html2strDyn</a></li><li data-type='method'><a href="wsemi.html#.htmlDecode">htmlDecode</a></li><li data-type='method'><a href="wsemi.html#.htmlEncode">htmlEncode</a></li><li data-type='method'><a href="wsemi.html#.importResources">importResources</a></li><li data-type='method'><a href="wsemi.html#.interp1">interp1</a></li><li data-type='method'><a href="wsemi.html#.isDev">isDev</a></li><li data-type='method'><a href="wsemi.html#.isEle">isEle</a></li><li data-type='method'><a href="wsemi.html#.isEleExistByID">isEleExistByID</a></li><li data-type='method'><a href="wsemi.html#.isEmail">isEmail</a></li><li data-type='method'><a href="wsemi.html#.isIE">isIE</a></li><li data-type='method'><a href="wsemi.html#.isNarrow">isNarrow</a></li><li data-type='method'><a href="wsemi.html#.isStrHasCapital">isStrHasCapital</a></li><li data-type='method'><a href="wsemi.html#.isStrHasLowerCase">isStrHasLowerCase</a></li><li data-type='method'><a href="wsemi.html#.isStrHasNumber">isStrHasNumber</a></li><li data-type='method'><a href="wsemi.html#.isUserIdentify">isUserIdentify</a></li><li data-type='method'><a href="wsemi.html#.isUserName">isUserName</a></li><li data-type='method'><a href="wsemi.html#.isUserPW">isUserPW</a></li><li data-type='method'><a href="wsemi.html#.isWindow">isWindow</a></li><li data-type='method'><a href="wsemi.html#.isab">isab</a></li><li data-type='method'><a href="wsemi.html#.isarr">isarr</a></li><li data-type='method'><a href="wsemi.html#.isarr0">isarr0</a></li><li data-type='method'><a href="wsemi.html#.isblob">isblob</a></li><li data-type='method'><a href="wsemi.html#.isbol">isbol</a></li><li data-type='method'><a href="wsemi.html#.isday">isday</a></li><li data-type='method'><a href="wsemi.html#.isearr">isearr</a></li><li data-type='method'><a href="wsemi.html#.iseobj">iseobj</a></li><li data-type='method'><a href="wsemi.html#.iser">iser</a></li><li data-type='method'><a href="wsemi.html#.isernot">isernot</a></li><li data-type='method'><a href="wsemi.html#.isestr">isestr</a></li><li data-type='method'><a href="wsemi.html#.isfun">isfun</a></li><li data-type='method'><a href="wsemi.html#.isint">isint</a></li><li data-type='method'><a href="wsemi.html#.ismonth">ismonth</a></li><li data-type='method'><a href="wsemi.html#.isn0int">isn0int</a></li><li data-type='method'><a href="wsemi.html#.isn0num">isn0num</a></li><li data-type='method'><a href="wsemi.html#.isnbr">isnbr</a></li><li data-type='method'><a href="wsemi.html#.isnint">isnint</a></li><li data-type='method'><a href="wsemi.html#.isnnum">isnnum</a></li><li data-type='method'><a href="wsemi.html#.isnull">isnull</a></li><li data-type='method'><a href="wsemi.html#.isnum">isnum</a></li><li data-type='method'><a href="wsemi.html#.isobj">isobj</a></li><li data-type='method'><a href="wsemi.html#.isobj0">isobj0</a></li><li data-type='method'><a href="wsemi.html#.isp0int">isp0int</a></li><li data-type='method'><a href="wsemi.html#.isp0num">isp0num</a></li><li data-type='method'><a href="wsemi.html#.ispint">ispint</a></li><li data-type='method'><a href="wsemi.html#.ispm">ispm</a></li><li data-type='method'><a href="wsemi.html#.ispnum">ispnum</a></li><li data-type='method'><a href="wsemi.html#.isstr">isstr</a></li><li data-type='method'><a href="wsemi.html#.isstr0">isstr0</a></li><li data-type='method'><a href="wsemi.html#.istime">istime</a></li><li data-type='method'><a href="wsemi.html#.istimeTZ">istimeTZ</a></li><li 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href="wsemi.html#.ltdtmapping">ltdtmapping</a></li><li data-type='method'><a href="wsemi.html#.ltdtmerge">ltdtmerge</a></li><li data-type='method'><a href="wsemi.html#.ltdtpick">ltdtpick</a></li><li data-type='method'><a href="wsemi.html#.ltdtpull">ltdtpull</a></li><li data-type='method'><a href="wsemi.html#.mat2ltdt">mat2ltdt</a></li><li data-type='method'><a href="wsemi.html#.matConcat">matConcat</a></li><li data-type='method'><a href="wsemi.html#.matDiff">matDiff</a></li><li data-type='method'><a href="wsemi.html#.matat">matat</a></li><li data-type='method'><a href="wsemi.html#.now2str">now2str</a></li><li data-type='method'><a href="wsemi.html#.now2strp">now2strp</a></li><li data-type='method'><a href="wsemi.html#.nowDay2str">nowDay2str</a></li><li data-type='method'><a href="wsemi.html#.nowms2str">nowms2str</a></li><li data-type='method'><a href="wsemi.html#.nowms2strp">nowms2strp</a></li><li data-type='method'><a href="wsemi.html#.o2j">o2j</a></li><li data-type='method'><a 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MersenneTwister} * * Unit Test: {@link https://github.com/yuda-lyu/wsemi/blob/master/test/pseudoRandom.test.mjs Github} * @memberOf wsemi * @param {Integer|Number|String} [seed='start1'] 輸入種子seed，給予'start1'為使用初始值1並且隨呼叫次數自增，若為其他則代表使用為指定seed，預設'start1' * @returns {Number} 回傳隨機數字 * @example * * let r * * r = pseudoRandom() * console.log('pseudoRandom', r) * // => pseudoRandom [0,1) * * r = pseudoRandom(123) * console.log('seed=123', r) * // => seed=123 0.6964691872708499 * * r = pseudoRandom(12.3) * console.log('seed=12.3', r) * // => seed=12.3 0.8510874302592129 * * r = pseudoRandom('abc') * console.log('seed=abc', r) * // => seed=abc 0.6314232510048896 * * r = pseudoRandom('abc') * console.log('seed=abc', r) * // => seed=abc 0.6314232510048896 * * r = pseudoRandom('def') * console.log('seed=def', r) * // => seed=def 0.9743434484116733 * * r = pseudoRandom('BH01S123') * console.log('seed=BH01S123', r) * // => seed=BH01S123 0.007978770649060607 * * r = pseudoRandom('BH-01:S-123') * console.log('seed=BH-01:S-123', r) * // => seed=BH01S123 0.9579511017072946 * */ function pseudoRandom(seed = 'start1') { //seed if (seed === undefined) { seed = new Date().getTime() } else if (seed === 'start1') { _seed++ seed = _seed } /* Period parameters */ let N = 624 let M = 397 let MATRIX_A = 0x9908b0df /* constant vector a */ let UPPER_MASK = 0x80000000 /* most significant w-r bits */ let LOWER_MASK = 0x7fffffff /* least significant r bits */ let mt = new Array(N) /* the array for the state vector */ let mti = N + 1 /* mti==N+1 means mt[N] is not initialized */ /* initializes mt[N] with a seed */ let init_genrand = (s) => { if (isNumber(s)) { mt[0] = s >>> 0 } else { s = cstr(s) mt[0] = str2hint(s) } for (mti = 1; mti < N; mti++) { let s = mt[mti - 1] ^ (mt[mti - 1] >>> 30) mt[mti] = (((((s & 0xffff0000) >>> 16) * 1812433253) << 16) + (s & 0x0000ffff) * 1812433253) + mti /* See Knuth TAOCP Vol2. 3rd Ed. P.106 for multiplier. */ /* In the previous versions, MSBs of the seed affect */ /* only MSBs of the array mt[]. */ /* 2002/01/09 modified by Makoto Matsumoto */ mt[mti] >>>= 0 /* for >32 bit machines */ } } // /* initialize by an array with array-length */ // /* init_key is the array for initializing keys */ // /* key_length is its length */ // /* slight change for C++, 2004/2/26 */ // let init_by_array = (init_key, key_length) => { // let i, j, k // init_genrand(19650218) // i = 1; j = 0 // k = (N > key_length ? N : key_length) // for (; k; k--) { // let s = mt[i - 1] ^ (mt[i - 1] >>> 30) // mt[i] = (mt[i] ^ (((((s & 0xffff0000) >>> 16) * 1664525) << 16) + ((s & 0x0000ffff) * 1664525))) + // init_key[j] + j /* non linear */ // mt[i] >>>= 0 /* for WORDSIZE > 32 machines */ // i++; j++ // if (i >= N) { // mt[0] = mt[N - 1]; i = 1 // } // if (j >= key_length) j = 0 // } // for (k = N - 1; k; k--) { // let s = mt[i - 1] ^ (mt[i - 1] >>> 30) // mt[i] = (mt[i] ^ (((((s & 0xffff0000) >>> 16) * 1566083941) << 16) + (s & 0x0000ffff) * 1566083941)) - i /* non linear */ // mt[i] >>>= 0 /* for WORDSIZE > 32 machines */ // i++ // if (i >= N) { // mt[0] = mt[N - 1]; i = 1 // } // } // mt[0] = 0x80000000 /* MSB is 1; assuring non-zero initial array */ // } /* generates a random number on [0,0xffffffff]-interval */ let genrand_int32 = () => { let y let mag01 = new Array(MATRIX_A) /* mag01[x] = x * MATRIX_A for x=0,1 */ if (mti >= N) { /* generate N words at one time */ let kk if (mti === N + 1) { /* if init_genrand() has not been called, */ init_genrand(5489) } /* a default initial seed is used */ for (kk = 0; kk < N - M; kk++) { y = (mt[kk] & UPPER_MASK) | (mt[kk + 1] & LOWER_MASK) mt[kk] = mt[kk + M] ^ (y >>> 1) ^ mag01[y & 0x1] } for (;kk < N - 1; kk++) { y = (mt[kk] & UPPER_MASK) | (mt[kk + 1] & LOWER_MASK) mt[kk] = mt[kk + (M - N)] ^ (y >>> 1) ^ mag01[y & 0x1] } y = (mt[N - 1] & UPPER_MASK) | (mt[0] & LOWER_MASK) mt[N - 1] = mt[M - 1] ^ (y >>> 1) ^ mag01[y & 0x1] mti = 0 } y = mt[mti++] /* Tempering */ y ^= (y >>> 11) y ^= (y << 7) & 0x9d2c5680 y ^= (y << 15) & 0xefc60000 y ^= (y >>> 18) return y >>> 0 } // /* generates a random number on [0,0x7fffffff]-interval */ // let genrand_int31 = () => { // return (genrand_int32() >>> 1) // } // /* generates a random number on [0,1]-real-interval */ // let genrand_real1 = () => { // return genrand_int32() * (1.0 / 4294967295.0) // /* divided by 2^32-1 */ // } /* generates a random number on [0,1)-real-interval */ let genrand = () => { return genrand_int32() * (1.0 / 4294967296.0) /* divided by 2^32 */ } // /* generates a random number on (0,1)-real-interval */ // let genrand_real3 = () => { // return (genrand_int32() + 0.5) * (1.0 / 4294967296.0) // /* divided by 2^32 */ // } // /* generates a random number on [0,1) with 53-bit resolution*/ // let genrand_res53 = () => { // let a = genrand_int32() >>> 5; let b = genrand_int32() >>> 6 // return (a * 67108864.0 + b) * (1.0 / 9007199254740992.0) // } init_genrand(seed) return genrand() } export default pseudoRandom </code></pre> </article> </section> </div> <br class="clear"> <footer> Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 4.0.2</a> on Wed Jul 19 2023 23:38:49 GMT+0800 (台北標準時間) using the <a href="https://github.com/clenemt/docdash">docdash</a> theme. </footer> <script>prettyPrint();</script> <script src="scripts/polyfill.js"></script> <script src="scripts/linenumber.js"></script> </body> </html>