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longdiv.html
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<!DOCTYPE html>
<!-- saved from url=(0014)about:internet -->
<!-- MathML mlongdiv generator
may be distributed under the MIT licence
-->
<html xmlns:m="http://www.w3.org/1998/Math/MathML" >
<head>
<title>MathML mlongdiv generator</title>
<style>
td {
border: solid thin black;
padding-left: 1em;
padding-right: 1em;
}
</style>
<object id=MathPlayer classid="clsid:32F66A20-7614-11D4-BD11-00104BD3F987" title="MathPlayer"></object>
<?import namespace="m" implementation="#MathPlayer" ?>
<script>
function padtol (s,l) {
var v = "";
for (var tmp = s; tmp< l; tmp++) {
v = v + " ";
}
return v;
}
function longdiv() {
// var istr = "12345678912345678";
// var jstr = "325";
var istr = document.getElementById("i").value.replace(/[^0-9]/g,'');
var jstr = document.getElementById("j").value.replace(/[^0-9]/g,'');
il=istr.length;
jl=jstr.length;
j=parseInt(jstr,10);
ia=istr.substr(0,jl);
if(parseInt(ia,10)< j) {
jl= jl+1;
}
var jpadl=jstr.length+1;
ans="";
work="";
work="<span class='initial'>" + jstr + " | " +istr +"</span>";
pad ="";
for (var tmp = 0; tmp< jl +1; tmp++) {
pad = " " + pad;
}
var jline ="<span class='line'>";
for (var tmp = 0; tmp< jpadl; tmp++) {
jline = jline + "-";
}
jline=jline + "</span>"
var ansline="";
rstr=istr.substr(0,jl);
for (var k=jl;k<=il;k++) {
r=parseInt(rstr,10);
a1=Math.floor(r / j);
ans = ans + a1;
var jtimes= j*a1;
pad = " " + pad;
rstr= (r - j*a1) + "";
work = work + "\n" + pad + padtol((jtimes + "").length,jpadl) + "<span style='color:green'><mn>" +jtimes +"</mn></span>" ;
work = work + "\n" + pad + jline + "<msline length='" + (k==jl? jl:jpadl) + "'/>";
work = work + "</msgroup><msgroup" +(k==il? " position='1'" : "" ) + ">";
work = work + "\n" + pad + padtol(rstr.length,jpadl)+ "<span style='color:red'><mn>"+ rstr +"</span>" + istr.substr(k,1) +"</mn>" ;
rstr = rstr + istr.substr(k,1);
}
var anspad="";
for (var tmp = 0; tmp< jpadl + jl +1; tmp++) {
anspad = " " + anspad;
}
var ansline="";
for (var tmp = 0; tmp< jpadl +1; tmp++) {
ansline = " " + ansline;
}
for (var tmp = 0; tmp< istr.length +1; tmp++) {
ansline = ansline + "-";
}
var aaaa = document.getElementById("a");
aaaa.innerHTML= "\n" + anspad + ans + "\n" + ansline + "\n" + work.replace(/<m[^<>]*>/g,'');
var bbbb = document.getElementById("b");
bbbb.innerHTML= "\n<math xmlns='http://www.w3.org/1998/Math/MathML'>" +
"\n<mlongdiv>" +
"\n<mn>" +jstr + "</mn>" +
"\n<mn>" +ans + "</mn>" +
"\n<mn>" +istr + "</mn>" +
"\n<msgroup position='" + (il - jl) +"' shift='-1'>" +
"\n<msgroup>" +
(work.replace(/<span class=.initial.*<\/span>/,'').replace(/ *<.?span[^<>]*>-*/g,'')).replace(/></g,'>\n<').replace(/</g,'<') +
"\n</msgroup>" +
"\n</msgroup>" +
"\n</mlongdiv>" +
"\n</math>\n"
;
var cccc = document.getElementById("c");
cccc.innerHTML= ("\n<math xmlns='http://www.w3.org/1998/Math/MathML'>" +
"\n<mlongdiv>" +
"\n<mn>" +jstr + "</mn>" +
"\n<mn>" +ans + "</mn>" +
"\n<mn>" +istr + "</mn>" +
"\n<msgroup position='" + (il - jl) +"' shift='-1'>" +
"\n<msgroup>" +
work.replace(/<span class=.initial.*<\/span>/,'').replace(/ *<.?span[^<>]*>-*/g,'') +
"\n</msgroup>" +
"\n</msgroup>" +
"\n</mlongdiv>" +
"\n</math>\n")
;
//.replace(/(<\/?)m/g,'$1m:m')
}
window.addEventListener('load', longdiv, false);
</script>
<script src="html5mathml.js"></script>
</head>
<body>
<p>
<input type="text" id="i" width="15" value="12345678912">
divided by
<input type="text" id="j" width="10" value="325"><br>
<button id="submit" text="submit" onclick="longdiv();">Update</button>
</p>
<table border>
<thead>
<tr>
<th>ASCII</th>
<th>MathML Markup</th>
<th>MathML Rendering</th>
</tr>
</th>
<tbody>
<tr>
<td><pre id="a"></pre></td>
<td><pre id="b"></pre></td>
<td><div id="c"></div>
</tr>
</tbody>
</table>
</body>
</html>