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<h1>number_object.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// -*- c-basic-offset: 2 -*-</span>
<a name="l00002"></a>00002 <span class="comment">/*</span>
<a name="l00003"></a>00003 <span class="comment"> *  This file is part of the KDE libraries</span>
<a name="l00004"></a>00004 <span class="comment"> *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)</span>
<a name="l00005"></a>00005 <span class="comment"> *  Copyright (C) 2003 Peter Kelly (pmk@post.com)</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> *  This library is free software; you can redistribute it and/or</span>
<a name="l00008"></a>00008 <span class="comment"> *  modify it under the terms of the GNU Lesser General Public</span>
<a name="l00009"></a>00009 <span class="comment"> *  License as published by the Free Software Foundation; either</span>
<a name="l00010"></a>00010 <span class="comment"> *  version 2 of the License, or (at your option) any later version.</span>
<a name="l00011"></a>00011 <span class="comment"> *</span>
<a name="l00012"></a>00012 <span class="comment"> *  This library is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment"> *  but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment"> *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU</span>
<a name="l00015"></a>00015 <span class="comment"> *  Lesser General Public License for more details.</span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> *  You should have received a copy of the GNU Lesser General Public</span>
<a name="l00018"></a>00018 <span class="comment"> *  License along with this library; if not, write to the Free Software</span>
<a name="l00019"></a>00019 <span class="comment"> *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA</span>
<a name="l00020"></a>00020 <span class="comment"> *</span>
<a name="l00021"></a>00021 <span class="comment"> */</span>
<a name="l00022"></a>00022 
<a name="l00023"></a>00023 <span class="preprocessor">#include "value.h"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "object.h"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "types.h"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "interpreter.h"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "operations.h"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "number_object.h"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "error_object.h"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "dtoa.h"</span>
<a name="l00031"></a>00031 
<a name="l00032"></a>00032 <span class="preprocessor">#include "number_object.lut.h"</span>
<a name="l00033"></a>00033 
<a name="l00034"></a>00034 <span class="preprocessor">#include &lt;assert.h&gt;</span>
<a name="l00035"></a>00035 <span class="preprocessor">#include &lt;math.h&gt;</span>
<a name="l00036"></a>00036 
<a name="l00037"></a>00037 <span class="keyword">using</span> <span class="keyword">namespace </span>KJS;
<a name="l00038"></a>00038 
<a name="l00039"></a>00039 <span class="comment">// ------------------------------ NumberInstanceImp ----------------------------</span>
<a name="l00040"></a>00040 
<a name="l00041"></a>00041 <span class="keyword">const</span> <a class="code" href="structKJS_1_1ClassInfo.html">ClassInfo</a> <a class="code" href="classKJS_1_1NumberInstanceImp.html#s0">NumberInstanceImp::info</a> = {<span class="stringliteral">"Number"</span>, 0, 0, 0};
<a name="l00042"></a>00042 
<a name="l00043"></a><a class="code" href="classKJS_1_1NumberInstanceImp.html#a0">00043</a> <a class="code" href="classKJS_1_1NumberInstanceImp.html#a0">NumberInstanceImp::NumberInstanceImp</a>(<a class="code" href="classKJS_1_1ObjectImp.html">ObjectImp</a> *proto)
<a name="l00044"></a>00044   : <a class="code" href="classKJS_1_1ObjectImp.html">ObjectImp</a>(proto)
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 }
<a name="l00047"></a>00047 <span class="comment">// ------------------------------ NumberPrototypeImp ---------------------------</span>
<a name="l00048"></a>00048 
<a name="l00049"></a>00049 <span class="comment">// ECMA 15.7.4</span>
<a name="l00050"></a>00050 
<a name="l00051"></a><a class="code" href="classKJS_1_1NumberPrototypeImp.html#a0">00051</a> <a class="code" href="classKJS_1_1NumberPrototypeImp.html#a0">NumberPrototypeImp::NumberPrototypeImp</a>(<a class="code" href="classKJS_1_1ExecState.html">ExecState</a> *exec,
<a name="l00052"></a>00052                                        <a class="code" href="classKJS_1_1ObjectPrototypeImp.html">ObjectPrototypeImp</a> *objProto,
<a name="l00053"></a>00053                                        <a class="code" href="classKJS_1_1FunctionPrototypeImp.html">FunctionPrototypeImp</a> *funcProto)
<a name="l00054"></a>00054   : <a class="code" href="classKJS_1_1NumberInstanceImp.html">NumberInstanceImp</a>(objProto)
<a name="l00055"></a>00055 {
<a name="l00056"></a>00056   <a class="code" href="classKJS_1_1Value.html">Value</a> protect(<span class="keyword">this</span>);
<a name="l00057"></a>00057   <a class="code" href="classKJS_1_1ObjectImp.html#a32">setInternalValue</a>(<a class="code" href="classKJS_1_1NumberImp.html#e2">NumberImp::zero</a>());
<a name="l00058"></a>00058 
<a name="l00059"></a>00059   <span class="comment">// The constructor will be added later, after NumberObjectImp has been constructed</span>
<a name="l00060"></a>00060 
<a name="l00061"></a>00061   <a class="code" href="classKJS_1_1ObjectImp.html#a40">putDirect</a>(<a class="code" href="namespaceKJS.html#a31">toStringPropertyName</a>,<span class="keyword">new</span> <a class="code" href="classKJS_1_1NumberProtoFuncImp.html">NumberProtoFuncImp</a>(exec,funcProto,NumberProtoFuncImp::ToString,
<a name="l00062"></a>00062                             1,<a class="code" href="namespaceKJS.html#a31">toStringPropertyName</a>),<a class="code" href="namespaceKJS.html#a161a92">DontEnum</a>);
<a name="l00063"></a>00063   <a class="code" href="classKJS_1_1ObjectImp.html#a40">putDirect</a>(<a class="code" href="namespaceKJS.html#a30">toLocaleStringPropertyName</a>,<span class="keyword">new</span> <a class="code" href="classKJS_1_1NumberProtoFuncImp.html">NumberProtoFuncImp</a>(exec,funcProto,NumberProtoFuncImp::ToLocaleString,
<a name="l00064"></a>00064                                   0,<a class="code" href="namespaceKJS.html#a30">toLocaleStringPropertyName</a>),<a class="code" href="namespaceKJS.html#a161a92">DontEnum</a>);
<a name="l00065"></a>00065   <a class="code" href="classKJS_1_1ObjectImp.html#a40">putDirect</a>(<a class="code" href="namespaceKJS.html#a32">valueOfPropertyName</a>,<span class="keyword">new</span> <a class="code" href="classKJS_1_1NumberProtoFuncImp.html">NumberProtoFuncImp</a>(exec,funcProto,NumberProtoFuncImp::ValueOf,
<a name="l00066"></a>00066                                0,<a class="code" href="namespaceKJS.html#a32">valueOfPropertyName</a>),<a class="code" href="namespaceKJS.html#a161a92">DontEnum</a>);
<a name="l00067"></a>00067   <a class="code" href="classKJS_1_1ObjectImp.html#a40">putDirect</a>(<span class="stringliteral">"toFixed"</span>, <span class="keyword">new</span> <a class="code" href="classKJS_1_1NumberProtoFuncImp.html">NumberProtoFuncImp</a>(exec,funcProto,NumberProtoFuncImp::ToFixed,
<a name="l00068"></a>00068                           1,<span class="stringliteral">"toFixed"</span>),<a class="code" href="namespaceKJS.html#a161a92">DontEnum</a>);
<a name="l00069"></a>00069   <a class="code" href="classKJS_1_1ObjectImp.html#a40">putDirect</a>(<span class="stringliteral">"toExponential"</span>,<span class="keyword">new</span> <a class="code" href="classKJS_1_1NumberProtoFuncImp.html">NumberProtoFuncImp</a>(exec,funcProto,NumberProtoFuncImp::ToExponential,
<a name="l00070"></a>00070                            1,<span class="stringliteral">"toExponential"</span>),<a class="code" href="namespaceKJS.html#a161a92">DontEnum</a>);
<a name="l00071"></a>00071   <a class="code" href="classKJS_1_1ObjectImp.html#a40">putDirect</a>(<span class="stringliteral">"toPrecision"</span>,<span class="keyword">new</span> <a class="code" href="classKJS_1_1NumberProtoFuncImp.html">NumberProtoFuncImp</a>(exec,funcProto,NumberProtoFuncImp::ToPrecision,
<a name="l00072"></a>00072                          1,<span class="stringliteral">"toPrecision"</span>),<a class="code" href="namespaceKJS.html#a161a92">DontEnum</a>);
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074 
<a name="l00075"></a>00075 
<a name="l00076"></a>00076 <span class="comment">// ------------------------------ NumberProtoFuncImp ---------------------------</span>
<a name="l00077"></a>00077 
<a name="l00078"></a><a class="code" href="classKJS_1_1NumberProtoFuncImp.html#a0">00078</a> <a class="code" href="classKJS_1_1NumberProtoFuncImp.html#a0">NumberProtoFuncImp::NumberProtoFuncImp</a>(<a class="code" href="classKJS_1_1ExecState.html">ExecState</a> * <span class="comment">/*exec*/</span>, <a class="code" href="classKJS_1_1FunctionPrototypeImp.html">FunctionPrototypeImp</a> *funcProto,
<a name="l00079"></a>00079                                        <span class="keywordtype">int</span> i, <span class="keywordtype">int</span> len, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Identifier.html">Identifier</a> &amp;_ident)
<a name="l00080"></a>00080   : <a class="code" href="classKJS_1_1InternalFunctionImp.html">InternalFunctionImp</a>(funcProto), id(i)
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082   <a class="code" href="classKJS_1_1Value.html">Value</a> protect(<span class="keyword">this</span>);
<a name="l00083"></a>00083   <a class="code" href="classKJS_1_1ObjectImp.html#a40">putDirect</a>(<a class="code" href="namespaceKJS.html#a25">lengthPropertyName</a>, len, <a class="code" href="namespaceKJS.html#a161a93">DontDelete</a>|<a class="code" href="namespaceKJS.html#a161a91">ReadOnly</a>|<a class="code" href="namespaceKJS.html#a161a92">DontEnum</a>);
<a name="l00084"></a>00084   <a class="code" href="classKJS_1_1InternalFunctionImp.html#p0">ident</a> = _ident;
<a name="l00085"></a>00085 }
<a name="l00086"></a>00086 
<a name="l00087"></a>00087 
<a name="l00088"></a><a class="code" href="classKJS_1_1NumberProtoFuncImp.html#a1">00088</a> <span class="keywordtype">bool</span> <a class="code" href="classKJS_1_1NumberProtoFuncImp.html#a1">NumberProtoFuncImp::implementsCall</a>()<span class="keyword"> const</span>
<a name="l00089"></a>00089 <span class="keyword"></span>{
<a name="l00090"></a>00090   <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092 
<a name="l00093"></a>00093 <span class="keyword">static</span> <a class="code" href="classKJS_1_1UString.html">UString</a> integer_part_noexp(<span class="keywordtype">double</span> d)
<a name="l00094"></a>00094 {
<a name="l00095"></a>00095   <span class="keywordtype">int</span> decimalPoint;
<a name="l00096"></a>00096   <span class="keywordtype">int</span> signDummy;
<a name="l00097"></a>00097   <span class="keywordtype">char</span> *result = kjs_dtoa(d, 0, 0, &amp;decimalPoint, &amp;signDummy, NULL);
<a name="l00098"></a>00098   <span class="keywordtype">int</span> length = strlen(result);
<a name="l00099"></a>00099 
<a name="l00100"></a>00100   <span class="comment">// sign for non-zero, negative numbers</span>
<a name="l00101"></a>00101   <a class="code" href="classKJS_1_1UString.html">UString</a> str = d &lt; 0 ? <span class="stringliteral">"-"</span> : <span class="stringliteral">""</span>;
<a name="l00102"></a>00102   <span class="keywordflow">if</span> (decimalPoint == 9999) {
<a name="l00103"></a>00103     str += <a class="code" href="classKJS_1_1UString.html">UString</a>(result);
<a name="l00104"></a>00104   } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (decimalPoint &lt;= 0) {
<a name="l00105"></a>00105     str += <a class="code" href="classKJS_1_1UString.html">UString</a>(<span class="stringliteral">"0"</span>);
<a name="l00106"></a>00106   } <span class="keywordflow">else</span> {
<a name="l00107"></a>00107     <span class="keywordtype">char</span> *buf;
<a name="l00108"></a>00108 
<a name="l00109"></a>00109     <span class="keywordflow">if</span> (length &lt;= decimalPoint) {
<a name="l00110"></a>00110       buf = (<span class="keywordtype">char</span>*)malloc(decimalPoint+1);
<a name="l00111"></a>00111       strcpy(buf,result);
<a name="l00112"></a>00112       memset(buf+length,<span class="charliteral">'0'</span>,decimalPoint-length);
<a name="l00113"></a>00113     } <span class="keywordflow">else</span> {
<a name="l00114"></a>00114       buf = (<span class="keywordtype">char</span>*)malloc(decimalPoint+1);
<a name="l00115"></a>00115       strncpy(buf,result,decimalPoint);
<a name="l00116"></a>00116     }
<a name="l00117"></a>00117 
<a name="l00118"></a>00118     buf[decimalPoint] = <span class="charliteral">'\0'</span>;
<a name="l00119"></a>00119     str += <a class="code" href="classKJS_1_1UString.html">UString</a>(buf);
<a name="l00120"></a>00120     free(buf);
<a name="l00121"></a>00121   }
<a name="l00122"></a>00122 
<a name="l00123"></a>00123   kjs_freedtoa(result);
<a name="l00124"></a>00124 
<a name="l00125"></a>00125   <span class="keywordflow">return</span> str;
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127 
<a name="l00128"></a>00128 <span class="keyword">static</span> <a class="code" href="classKJS_1_1UString.html">UString</a> char_sequence(<span class="keywordtype">char</span> c, <span class="keywordtype">int</span> count)
<a name="l00129"></a>00129 {
<a name="l00130"></a>00130   <span class="keywordtype">char</span> *buf = (<span class="keywordtype">char</span>*)malloc(count+1);
<a name="l00131"></a>00131   memset(buf,c,count);
<a name="l00132"></a>00132   buf[count] = <span class="charliteral">'\0'</span>;
<a name="l00133"></a>00133   <a class="code" href="classKJS_1_1UString.html">UString</a> s(buf);
<a name="l00134"></a>00134   free(buf);
<a name="l00135"></a>00135   <span class="keywordflow">return</span> s;
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137 
<a name="l00138"></a>00138 <span class="comment">// ECMA 15.7.4.2 - 15.7.4.7</span>
<a name="l00139"></a><a class="code" href="classKJS_1_1NumberProtoFuncImp.html#a2">00139</a> <a class="code" href="classKJS_1_1Value.html">Value</a> <a class="code" href="classKJS_1_1NumberProtoFuncImp.html#a2">NumberProtoFuncImp::call</a>(<a class="code" href="classKJS_1_1ExecState.html">ExecState</a> *exec, <a class="code" href="classKJS_1_1Object.html">Object</a> &amp;thisObj, <span class="keyword">const</span> <a class="code" href="classKJS_1_1List.html">List</a> &amp;args)
<a name="l00140"></a>00140 {
<a name="l00141"></a>00141   <a class="code" href="classKJS_1_1Value.html">Value</a> result;
<a name="l00142"></a>00142 
<a name="l00143"></a>00143   <span class="comment">// no generic function. "this" has to be a Number object</span>
<a name="l00144"></a>00144   KJS_CHECK_THIS( <a class="code" href="classKJS_1_1NumberInstanceImp.html">NumberInstanceImp</a>, thisObj );
<a name="l00145"></a>00145 
<a name="l00146"></a>00146   <span class="comment">// execute "toString()" or "valueOf()", respectively</span>
<a name="l00147"></a>00147   <a class="code" href="classKJS_1_1Value.html">Value</a> v = thisObj.<a class="code" href="classKJS_1_1Object.html#a26">internalValue</a>();
<a name="l00148"></a>00148   <span class="keywordflow">switch</span> (<span class="keywordtype">id</span>) {
<a name="l00149"></a>00149   <span class="keywordflow">case</span> ToString: {
<a name="l00150"></a>00150     <span class="keywordtype">int</span> radix = 10;
<a name="l00151"></a>00151     <span class="keywordflow">if</span> (!args.<a class="code" href="classKJS_1_1List.html#a10">isEmpty</a>() &amp;&amp; args[0].type() != UndefinedType)
<a name="l00152"></a>00152       radix = args[0].toInteger(exec);
<a name="l00153"></a>00153     <span class="keywordflow">if</span> (radix &lt; 2 || radix &gt; 36 || radix == 10)
<a name="l00154"></a>00154       result = <a class="code" href="classKJS_1_1String.html">String</a>(v.<a class="code" href="classKJS_1_1Value.html#a17">toString</a>(exec));
<a name="l00155"></a>00155     <span class="keywordflow">else</span> {
<a name="l00156"></a>00156       <span class="keyword">const</span> <span class="keywordtype">char</span> digits[] = <span class="stringliteral">"0123456789abcdefghijklmnopqrstuvwxyz"</span>;
<a name="l00157"></a>00157       <span class="comment">// INT_MAX results in 1024 characters left of the dot with radix 2</span>
<a name="l00158"></a>00158       <span class="comment">// give the same space on the right side. safety checks are in place</span>
<a name="l00159"></a>00159       <span class="comment">// unless someone finds a precise rule.</span>
<a name="l00160"></a>00160       <span class="keywordtype">char</span> s[2048 + 3];
<a name="l00161"></a>00161       <span class="keywordtype">double</span> x = v.<a class="code" href="classKJS_1_1Value.html#a12">toNumber</a>(exec);
<a name="l00162"></a>00162       <span class="keywordflow">if</span> (<a class="code" href="namespaceKJS.html#a133">isNaN</a>(x) || <a class="code" href="namespaceKJS.html#a134">isInf</a>(x))
<a name="l00163"></a>00163         <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(<a class="code" href="classKJS_1_1UString.html#e0">UString::from</a>(x));
<a name="l00164"></a>00164       <span class="comment">// apply algorithm on absolute value. add sign later.</span>
<a name="l00165"></a>00165       <span class="keywordtype">bool</span> neg = <span class="keyword">false</span>;
<a name="l00166"></a>00166       <span class="keywordflow">if</span> (x &lt; 0.0) {
<a name="l00167"></a>00167         neg = <span class="keyword">true</span>;
<a name="l00168"></a>00168         x = -x;
<a name="l00169"></a>00169       }
<a name="l00170"></a>00170       <span class="comment">// convert integer portion</span>
<a name="l00171"></a>00171       <span class="keywordtype">double</span> f = floor(x);
<a name="l00172"></a>00172       <span class="keywordtype">double</span> d = f;
<a name="l00173"></a>00173       <span class="keywordtype">char</span> *dot = s + <span class="keyword">sizeof</span>(s) / 2;
<a name="l00174"></a>00174       <span class="keywordtype">char</span> *p = dot;
<a name="l00175"></a>00175       *p = <span class="charliteral">'\0'</span>;
<a name="l00176"></a>00176       <span class="keywordflow">do</span> {
<a name="l00177"></a>00177         *--p = digits[int(fmod(d, <span class="keywordtype">double</span>(radix)))];
<a name="l00178"></a>00178         d /= radix;
<a name="l00179"></a>00179       } <span class="keywordflow">while</span> ((d &lt;= -1.0 || d &gt;= 1.0) &amp;&amp; p &gt; s);
<a name="l00180"></a>00180       <span class="comment">// any decimal fraction ?</span>
<a name="l00181"></a>00181       d = x - f;
<a name="l00182"></a>00182       <span class="keyword">const</span> <span class="keywordtype">double</span> eps = 0.001; <span class="comment">// TODO: guessed. base on radix ?</span>
<a name="l00183"></a>00183       <span class="keywordflow">if</span> (d &lt; -eps || d &gt; eps) {
<a name="l00184"></a>00184         *dot++ = <span class="charliteral">'.'</span>;
<a name="l00185"></a>00185         <span class="keywordflow">do</span> {
<a name="l00186"></a>00186           d *= radix;
<a name="l00187"></a>00187           *dot++ = digits[int(d)];
<a name="l00188"></a>00188           d -= int(d);
<a name="l00189"></a>00189         } <span class="keywordflow">while</span> ((d &lt; -eps || d &gt; eps) &amp;&amp; dot - s &lt; <span class="keywordtype">int</span>(<span class="keyword">sizeof</span>(s)) - 1);
<a name="l00190"></a>00190         *dot = <span class="charliteral">'\0'</span>;
<a name="l00191"></a>00191       }
<a name="l00192"></a>00192       <span class="comment">// add sign if negative</span>
<a name="l00193"></a>00193       <span class="keywordflow">if</span> (neg)
<a name="l00194"></a>00194         *--p = <span class="charliteral">'-'</span>;
<a name="l00195"></a>00195       result = <a class="code" href="classKJS_1_1String.html">String</a>(p);
<a name="l00196"></a>00196     }
<a name="l00197"></a>00197     <span class="keywordflow">break</span>;
<a name="l00198"></a>00198   }
<a name="l00199"></a>00199   <span class="keywordflow">case</span> ToLocaleString: <span class="comment">/* TODO */</span>
<a name="l00200"></a>00200     result = <a class="code" href="classKJS_1_1String.html">String</a>(v.<a class="code" href="classKJS_1_1Value.html#a17">toString</a>(exec));
<a name="l00201"></a>00201     <span class="keywordflow">break</span>;
<a name="l00202"></a>00202   <span class="keywordflow">case</span> ValueOf:
<a name="l00203"></a>00203     result = <a class="code" href="classKJS_1_1Number.html">Number</a>(v.<a class="code" href="classKJS_1_1Value.html#a12">toNumber</a>(exec));
<a name="l00204"></a>00204     <span class="keywordflow">break</span>;
<a name="l00205"></a>00205   <span class="keywordflow">case</span> ToFixed:
<a name="l00206"></a>00206   {
<a name="l00207"></a>00207     <span class="comment">// FIXME: firefox works for all values, not just 0..20.  This includes</span>
<a name="l00208"></a>00208     <span class="comment">// NaN, infinity, undefined, etc.  This is just a hack to pass our regression</span>
<a name="l00209"></a>00209     <span class="comment">// suite.</span>
<a name="l00210"></a>00210     <a class="code" href="classKJS_1_1Value.html">Value</a> fractionDigits = args[0];
<a name="l00211"></a>00211     <span class="keywordtype">int</span> f = -1;
<a name="l00212"></a>00212     <span class="keywordtype">double</span> fd = fractionDigits.<a class="code" href="classKJS_1_1Value.html#a12">toNumber</a>(exec);
<a name="l00213"></a>00213     <span class="keywordflow">if</span> (<a class="code" href="namespaceKJS.html#a133">isNaN</a>(fd)) {
<a name="l00214"></a>00214       f = 0;
<a name="l00215"></a>00215     } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!<a class="code" href="namespaceKJS.html#a134">isInf</a>(fd)) {
<a name="l00216"></a>00216       f = int(fd);
<a name="l00217"></a>00217     }
<a name="l00218"></a>00218     <span class="keywordflow">if</span> (f &lt; 0 || f &gt; 20) {
<a name="l00219"></a>00219       <a class="code" href="classKJS_1_1Object.html">Object</a> err = <a class="code" href="classKJS_1_1Error.html#e0">Error::create</a>(exec,RangeError);
<a name="l00220"></a>00220       exec-&gt;<a class="code" href="classKJS_1_1ExecState.html#a4">setException</a>(err);
<a name="l00221"></a>00221       <span class="keywordflow">return</span> err;
<a name="l00222"></a>00222     }
<a name="l00223"></a>00223 
<a name="l00224"></a>00224     <span class="keywordtype">double</span> x = v.<a class="code" href="classKJS_1_1Value.html#a12">toNumber</a>(exec);
<a name="l00225"></a>00225     <span class="keywordflow">if</span> (<a class="code" href="namespaceKJS.html#a133">isNaN</a>(x))
<a name="l00226"></a>00226       <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(<span class="stringliteral">"NaN"</span>);
<a name="l00227"></a>00227 
<a name="l00228"></a>00228     <a class="code" href="classKJS_1_1UString.html">UString</a> s = <span class="stringliteral">""</span>;
<a name="l00229"></a>00229     <span class="keywordflow">if</span> (x &lt; 0) {
<a name="l00230"></a>00230       s += <span class="stringliteral">"-"</span>;
<a name="l00231"></a>00231       x = -x;
<a name="l00232"></a>00232     }
<a name="l00233"></a>00233 
<a name="l00234"></a>00234     <span class="keywordflow">if</span> (x &gt;= 1e21)
<a name="l00235"></a>00235       <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(s+<a class="code" href="classKJS_1_1UString.html#e0">UString::from</a>(x));
<a name="l00236"></a>00236 
<a name="l00237"></a>00237     <span class="keywordtype">double</span> n = floor(x*pow(10.0,f));
<a name="l00238"></a>00238     <span class="keywordflow">if</span> (fabs(n/pow(10.0,f)-x) &gt; fabs((n+1)/pow(10.0,f)-x))
<a name="l00239"></a>00239       n++;
<a name="l00240"></a>00240 
<a name="l00241"></a>00241     <a class="code" href="classKJS_1_1UString.html">UString</a> m = integer_part_noexp(n);
<a name="l00242"></a>00242 
<a name="l00243"></a>00243     <span class="keywordtype">int</span> k = m.<a class="code" href="classKJS_1_1UString.html#a23">size</a>();
<a name="l00244"></a>00244     <span class="keywordflow">if</span> (m.<a class="code" href="classKJS_1_1UString.html#a23">size</a>() &lt; f) {
<a name="l00245"></a>00245       <a class="code" href="classKJS_1_1UString.html">UString</a> z = <span class="stringliteral">""</span>;
<a name="l00246"></a>00246       <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; f+1-k; i++)
<a name="l00247"></a>00247     z += <span class="stringliteral">"0"</span>;
<a name="l00248"></a>00248       m = z + m;
<a name="l00249"></a>00249       k = f + 1;
<a name="l00250"></a>00250       assert(k == m.size());
<a name="l00251"></a>00251     }
<a name="l00252"></a>00252     <span class="keywordflow">if</span> (k-f &lt; m.<a class="code" href="classKJS_1_1UString.html#a23">size</a>())
<a name="l00253"></a>00253       <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(s+m.<a class="code" href="classKJS_1_1UString.html#a40">substr</a>(0,k-f)+<span class="stringliteral">"."</span>+m.<a class="code" href="classKJS_1_1UString.html#a40">substr</a>(k-f));
<a name="l00254"></a>00254     <span class="keywordflow">else</span>
<a name="l00255"></a>00255       <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(s+m.<a class="code" href="classKJS_1_1UString.html#a40">substr</a>(0,k-f));
<a name="l00256"></a>00256   }
<a name="l00257"></a>00257   <span class="keywordflow">case</span> ToExponential: {
<a name="l00258"></a>00258     <span class="keywordtype">double</span> x = v.<a class="code" href="classKJS_1_1Value.html#a12">toNumber</a>(exec);
<a name="l00259"></a>00259 
<a name="l00260"></a>00260     <span class="keywordflow">if</span> (<a class="code" href="namespaceKJS.html#a133">isNaN</a>(x) || <a class="code" href="namespaceKJS.html#a134">isInf</a>(x))
<a name="l00261"></a>00261       <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(<a class="code" href="classKJS_1_1UString.html#e0">UString::from</a>(x));
<a name="l00262"></a>00262 
<a name="l00263"></a>00263     <span class="keywordtype">int</span> f = 1;
<a name="l00264"></a>00264     <a class="code" href="classKJS_1_1Value.html">Value</a> fractionDigits = args[0];
<a name="l00265"></a>00265     <span class="keywordflow">if</span> (args.<a class="code" href="classKJS_1_1List.html#a11">size</a>() &gt; 0) {
<a name="l00266"></a>00266       f = fractionDigits.<a class="code" href="classKJS_1_1Value.html#a13">toInteger</a>(exec);
<a name="l00267"></a>00267       <span class="keywordflow">if</span> (f &lt; 0 || f &gt; 20) {
<a name="l00268"></a>00268         <a class="code" href="classKJS_1_1Object.html">Object</a> err = <a class="code" href="classKJS_1_1Error.html#e0">Error::create</a>(exec,RangeError);
<a name="l00269"></a>00269         exec-&gt;<a class="code" href="classKJS_1_1ExecState.html#a4">setException</a>(err);
<a name="l00270"></a>00270         <span class="keywordflow">return</span> err;
<a name="l00271"></a>00271       }
<a name="l00272"></a>00272     }
<a name="l00273"></a>00273 
<a name="l00274"></a>00274     <span class="keywordtype">int</span> decimalAdjust = 0;
<a name="l00275"></a>00275     <span class="keywordflow">if</span> (!fractionDigits.<a class="code" href="classKJS_1_1Value.html#a9">isA</a>(UndefinedType)) {
<a name="l00276"></a>00276       <span class="keywordtype">double</span> logx = floor(log10(x));
<a name="l00277"></a>00277       x /= pow(10.0,logx);
<a name="l00278"></a>00278       <span class="keywordtype">double</span> fx = floor(x*pow(10.0,f))/pow(10.0,f);
<a name="l00279"></a>00279       <span class="keywordtype">double</span> cx = ceil(x*pow(10.0,f))/pow(10.0,f);
<a name="l00280"></a>00280 
<a name="l00281"></a>00281       <span class="keywordflow">if</span> (fabs(fx-x) &lt; fabs(cx-x))
<a name="l00282"></a>00282     x = fx;
<a name="l00283"></a>00283       <span class="keywordflow">else</span>
<a name="l00284"></a>00284     x = cx;
<a name="l00285"></a>00285 
<a name="l00286"></a>00286       decimalAdjust = int(logx);
<a name="l00287"></a>00287     }
<a name="l00288"></a>00288 
<a name="l00289"></a>00289     <span class="keywordtype">char</span> buf[80];
<a name="l00290"></a>00290     <span class="keywordtype">int</span> decimalPoint;
<a name="l00291"></a>00291     <span class="keywordtype">int</span> sign;
<a name="l00292"></a>00292 
<a name="l00293"></a>00293     <span class="keywordflow">if</span> (<a class="code" href="namespaceKJS.html#a133">isNaN</a>(x))
<a name="l00294"></a>00294       <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(<span class="stringliteral">"NaN"</span>);
<a name="l00295"></a>00295 
<a name="l00296"></a>00296     <span class="keywordtype">char</span> *result = kjs_dtoa(x, 0, 0, &amp;decimalPoint, &amp;sign, NULL);
<a name="l00297"></a>00297     <span class="keywordtype">int</span> length = strlen(result);
<a name="l00298"></a>00298     decimalPoint += decimalAdjust;
<a name="l00299"></a>00299 
<a name="l00300"></a>00300     <span class="keywordtype">int</span> i = 0;
<a name="l00301"></a>00301     <span class="keywordflow">if</span> (sign) {
<a name="l00302"></a>00302       buf[i++] = <span class="charliteral">'-'</span>;
<a name="l00303"></a>00303     }
<a name="l00304"></a>00304 
<a name="l00305"></a>00305     <span class="keywordflow">if</span> (decimalPoint == 999) {
<a name="l00306"></a>00306       strcpy(buf + i, result);
<a name="l00307"></a>00307     } <span class="keywordflow">else</span> {
<a name="l00308"></a>00308       buf[i++] = result[0];
<a name="l00309"></a>00309 
<a name="l00310"></a>00310       <span class="keywordflow">if</span> (fractionDigits.<a class="code" href="classKJS_1_1Value.html#a9">isA</a>(UndefinedType))
<a name="l00311"></a>00311     f = length-1;
<a name="l00312"></a>00312 
<a name="l00313"></a>00313       <span class="keywordflow">if</span> (length &gt; 1 &amp;&amp; f &gt; 0) {
<a name="l00314"></a>00314     buf[i++] = <span class="charliteral">'.'</span>;
<a name="l00315"></a>00315     <span class="keywordtype">int</span> haveFDigits = length-1;
<a name="l00316"></a>00316     <span class="keywordflow">if</span> (f &lt; haveFDigits) {
<a name="l00317"></a>00317       strncpy(buf+i,result+1, f);
<a name="l00318"></a>00318       i += f;
<a name="l00319"></a>00319     }
<a name="l00320"></a>00320     <span class="keywordflow">else</span> {
<a name="l00321"></a>00321       strcpy(buf+i,result+1);
<a name="l00322"></a>00322       i += length-1;
<a name="l00323"></a>00323       <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j &lt; f-haveFDigits; j++)
<a name="l00324"></a>00324         buf[i++] = <span class="charliteral">'0'</span>;
<a name="l00325"></a>00325     }
<a name="l00326"></a>00326       }
<a name="l00327"></a>00327 
<a name="l00328"></a>00328       buf[i++] = <span class="charliteral">'e'</span>;
<a name="l00329"></a>00329       buf[i++] = (decimalPoint &gt;= 0) ? <span class="charliteral">'+'</span> : <span class="charliteral">'-'</span>;
<a name="l00330"></a>00330       <span class="comment">// decimalPoint can't be more than 3 digits decimal given the</span>
<a name="l00331"></a>00331       <span class="comment">// nature of float representation</span>
<a name="l00332"></a>00332       <span class="keywordtype">int</span> exponential = decimalPoint - 1;
<a name="l00333"></a>00333       <span class="keywordflow">if</span> (exponential &lt; 0) {
<a name="l00334"></a>00334     exponential = exponential * -1;
<a name="l00335"></a>00335       }
<a name="l00336"></a>00336       <span class="keywordflow">if</span> (exponential &gt;= 100) {
<a name="l00337"></a>00337     buf[i++] = <span class="charliteral">'0'</span> + exponential / 100;
<a name="l00338"></a>00338       }
<a name="l00339"></a>00339       <span class="keywordflow">if</span> (exponential &gt;= 10) {
<a name="l00340"></a>00340     buf[i++] = <span class="charliteral">'0'</span> + (exponential % 100) / 10;
<a name="l00341"></a>00341       }
<a name="l00342"></a>00342       buf[i++] = <span class="charliteral">'0'</span> + exponential % 10;
<a name="l00343"></a>00343       buf[i++] = <span class="charliteral">'\0'</span>;
<a name="l00344"></a>00344     }
<a name="l00345"></a>00345 
<a name="l00346"></a>00346     assert(i &lt;= 80);
<a name="l00347"></a>00347 
<a name="l00348"></a>00348     kjs_freedtoa(result);
<a name="l00349"></a>00349 
<a name="l00350"></a>00350     <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(<a class="code" href="classKJS_1_1UString.html">UString</a>(buf));
<a name="l00351"></a>00351   }
<a name="l00352"></a>00352   <span class="keywordflow">case</span> ToPrecision:
<a name="l00353"></a>00353   {
<a name="l00354"></a>00354     <span class="keywordtype">int</span> e = 0;
<a name="l00355"></a>00355     <a class="code" href="classKJS_1_1UString.html">UString</a> m;
<a name="l00356"></a>00356 
<a name="l00357"></a>00357     <span class="keywordtype">int</span> p = args[0].toInteger(exec);
<a name="l00358"></a>00358     <span class="keywordtype">double</span> x = v.<a class="code" href="classKJS_1_1Value.html#a12">toNumber</a>(exec);
<a name="l00359"></a>00359     <span class="keywordflow">if</span> (args[0].isA(UndefinedType) || <a class="code" href="namespaceKJS.html#a133">isNaN</a>(x) || <a class="code" href="namespaceKJS.html#a134">isInf</a>(x))
<a name="l00360"></a>00360       <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(v.<a class="code" href="classKJS_1_1Value.html#a17">toString</a>(exec));
<a name="l00361"></a>00361 
<a name="l00362"></a>00362     <a class="code" href="classKJS_1_1UString.html">UString</a> s = <span class="stringliteral">""</span>;
<a name="l00363"></a>00363     <span class="keywordflow">if</span> (x &lt; 0) {
<a name="l00364"></a>00364       s = <span class="stringliteral">"-"</span>;
<a name="l00365"></a>00365       x = -x;
<a name="l00366"></a>00366     }
<a name="l00367"></a>00367 
<a name="l00368"></a>00368     <span class="keywordflow">if</span> (p &lt; 1 || p &gt; 21) {
<a name="l00369"></a>00369       <a class="code" href="classKJS_1_1Object.html">Object</a> err = <a class="code" href="classKJS_1_1Error.html#e0">Error::create</a>(exec, RangeError,
<a name="l00370"></a>00370                  <span class="stringliteral">"toPrecision() argument must be between 1 and 21"</span>);
<a name="l00371"></a>00371       exec-&gt;setException(err);
<a name="l00372"></a>00372       <span class="keywordflow">return</span> err;
<a name="l00373"></a>00373     }
<a name="l00374"></a>00374 
<a name="l00375"></a>00375     <span class="keywordflow">if</span> (x != 0) {
<a name="l00376"></a>00376       <span class="comment">// suggestions for a better algorithm welcome!</span>
<a name="l00377"></a>00377       e = int(log10(x));
<a name="l00378"></a>00378       <span class="keywordtype">double</span> n = floor(x/pow(10.0,e-p+1));
<a name="l00379"></a>00379       <span class="keywordflow">if</span> (n &lt; pow(10.0,p-1)) {
<a name="l00380"></a>00380     <span class="comment">// first guess was not good</span>
<a name="l00381"></a>00381     e = e - 1;
<a name="l00382"></a>00382     n = floor(x/pow(10.0,e-p+1));
<a name="l00383"></a>00383     <span class="keywordflow">if</span> (n &gt;= pow(10.0,p)) {
<a name="l00384"></a>00384       <span class="comment">// violated constraint. try something else.</span>
<a name="l00385"></a>00385       n = pow(10.0,p-1);
<a name="l00386"></a>00386       e = int(log10(x/n)) + p - 1;
<a name="l00387"></a>00387     }
<a name="l00388"></a>00388       }
<a name="l00389"></a>00389 
<a name="l00390"></a>00390       <span class="keywordflow">if</span> (fabs((n+1)*pow(10.0,e-p+1)-x) &lt; fabs(n*pow(10.0,e-p+1)-x))
<a name="l00391"></a>00391     n++;
<a name="l00392"></a>00392       assert(pow(10.0,p-1) &lt;= n);
<a name="l00393"></a>00393       assert(n &lt; pow(10.0,p));
<a name="l00394"></a>00394 
<a name="l00395"></a>00395       m = integer_part_noexp(n);
<a name="l00396"></a>00396       <span class="keywordflow">if</span> (e &lt; -6 || e &gt;= p) {
<a name="l00397"></a>00397     <span class="keywordflow">if</span> (m.<a class="code" href="classKJS_1_1UString.html#a23">size</a>() &gt; 1)
<a name="l00398"></a>00398       m = m.<a class="code" href="classKJS_1_1UString.html#a40">substr</a>(0,1)+<span class="stringliteral">"."</span>+m.<a class="code" href="classKJS_1_1UString.html#a40">substr</a>(1);
<a name="l00399"></a>00399     <span class="keywordflow">if</span> (e &gt;= 0)
<a name="l00400"></a>00400       <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(s+m+<span class="stringliteral">"e+"</span>+<a class="code" href="classKJS_1_1UString.html#e0">UString::from</a>(e));
<a name="l00401"></a>00401     <span class="keywordflow">else</span>
<a name="l00402"></a>00402       <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(s+m+<span class="stringliteral">"e-"</span>+<a class="code" href="classKJS_1_1UString.html#e0">UString::from</a>(-e));
<a name="l00403"></a>00403       }
<a name="l00404"></a>00404     }
<a name="l00405"></a>00405     <span class="keywordflow">else</span> {
<a name="l00406"></a>00406       m = char_sequence(<span class="charliteral">'0'</span>,p);
<a name="l00407"></a>00407       e = 0;
<a name="l00408"></a>00408     }
<a name="l00409"></a>00409 
<a name="l00410"></a>00410     <span class="keywordflow">if</span> (e == p-1) {
<a name="l00411"></a>00411       <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(s+m);
<a name="l00412"></a>00412     }
<a name="l00413"></a>00413     <span class="keywordflow">else</span> <span class="keywordflow">if</span> (e &gt;= 0) {
<a name="l00414"></a>00414       <span class="keywordflow">if</span> (e+1 &lt; m.<a class="code" href="classKJS_1_1UString.html#a23">size</a>())
<a name="l00415"></a>00415     <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(s+m.<a class="code" href="classKJS_1_1UString.html#a40">substr</a>(0,e+1)+<span class="stringliteral">"."</span>+m.<a class="code" href="classKJS_1_1UString.html#a40">substr</a>(e+1));
<a name="l00416"></a>00416       <span class="keywordflow">else</span>
<a name="l00417"></a>00417     <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(s+m.<a class="code" href="classKJS_1_1UString.html#a40">substr</a>(0,e+1));
<a name="l00418"></a>00418     }
<a name="l00419"></a>00419     <span class="keywordflow">else</span> {
<a name="l00420"></a>00420       <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1String.html">String</a>(s+<span class="stringliteral">"0."</span>+char_sequence(<span class="charliteral">'0'</span>,-(e+1))+m);
<a name="l00421"></a>00421     }
<a name="l00422"></a>00422   }
<a name="l00423"></a>00423   }
<a name="l00424"></a>00424 
<a name="l00425"></a>00425   <span class="keywordflow">return</span> result;
<a name="l00426"></a>00426 }
<a name="l00427"></a>00427 
<a name="l00428"></a>00428 <span class="comment">// ------------------------------ NumberObjectImp ------------------------------</span>
<a name="l00429"></a>00429 
<a name="l00430"></a>00430 <span class="keyword">const</span> <a class="code" href="structKJS_1_1ClassInfo.html">ClassInfo</a> <a class="code" href="classKJS_1_1NumberObjectImp.html#s0">NumberObjectImp::info</a> = {<span class="stringliteral">"Function"</span>, &amp;<a class="code" href="classKJS_1_1InternalFunctionImp.html#s0">InternalFunctionImp::info</a>, &amp;<a class="code" href="namespaceKJS.html#a89">numberTable</a>, 0};
<a name="l00431"></a>00431 
<a name="l00432"></a>00432 <span class="comment">/* Source for number_object.lut.h</span>
<a name="l00433"></a>00433 <span class="comment">@begin numberTable 5</span>
<a name="l00434"></a>00434 <span class="comment">  NaN           NumberObjectImp::NaNValue   DontEnum|DontDelete|ReadOnly</span>
<a name="l00435"></a>00435 <span class="comment">  NEGATIVE_INFINITY NumberObjectImp::NegInfinity    DontEnum|DontDelete|ReadOnly</span>
<a name="l00436"></a>00436 <span class="comment">  POSITIVE_INFINITY NumberObjectImp::PosInfinity    DontEnum|DontDelete|ReadOnly</span>
<a name="l00437"></a>00437 <span class="comment">  MAX_VALUE     NumberObjectImp::MaxValue   DontEnum|DontDelete|ReadOnly</span>
<a name="l00438"></a>00438 <span class="comment">  MIN_VALUE     NumberObjectImp::MinValue   DontEnum|DontDelete|ReadOnly</span>
<a name="l00439"></a>00439 <span class="comment">@end</span>
<a name="l00440"></a>00440 <span class="comment">*/</span>
<a name="l00441"></a><a class="code" href="classKJS_1_1NumberObjectImp.html#a0">00441</a> <a class="code" href="classKJS_1_1NumberObjectImp.html#a0">NumberObjectImp::NumberObjectImp</a>(<a class="code" href="classKJS_1_1ExecState.html">ExecState</a> * <span class="comment">/*exec*/</span>,
<a name="l00442"></a>00442                                  <a class="code" href="classKJS_1_1FunctionPrototypeImp.html">FunctionPrototypeImp</a> *funcProto,
<a name="l00443"></a>00443                                  <a class="code" href="classKJS_1_1NumberPrototypeImp.html">NumberPrototypeImp</a> *numberProto)
<a name="l00444"></a>00444   : <a class="code" href="classKJS_1_1InternalFunctionImp.html">InternalFunctionImp</a>(funcProto)
<a name="l00445"></a>00445 {
<a name="l00446"></a>00446   <a class="code" href="classKJS_1_1Value.html">Value</a> protect(<span class="keyword">this</span>);
<a name="l00447"></a>00447   <span class="comment">// Number.Prototype</span>
<a name="l00448"></a>00448   <a class="code" href="classKJS_1_1ObjectImp.html#a40">putDirect</a>(<a class="code" href="namespaceKJS.html#a28">prototypePropertyName</a>, numberProto, <a class="code" href="namespaceKJS.html#a161a92">DontEnum</a>|<a class="code" href="namespaceKJS.html#a161a93">DontDelete</a>|<a class="code" href="namespaceKJS.html#a161a91">ReadOnly</a>);
<a name="l00449"></a>00449 
<a name="l00450"></a>00450   <span class="comment">// no. of arguments for constructor</span>
<a name="l00451"></a>00451   <a class="code" href="classKJS_1_1ObjectImp.html#a40">putDirect</a>(<a class="code" href="namespaceKJS.html#a25">lengthPropertyName</a>, <a class="code" href="classKJS_1_1NumberImp.html#e3">NumberImp::one</a>(), <a class="code" href="namespaceKJS.html#a161a91">ReadOnly</a>|<a class="code" href="namespaceKJS.html#a161a93">DontDelete</a>|<a class="code" href="namespaceKJS.html#a161a92">DontEnum</a>);
<a name="l00452"></a>00452 }
<a name="l00453"></a>00453 
<a name="l00454"></a><a class="code" href="classKJS_1_1NumberObjectImp.html#a5">00454</a> <a class="code" href="classKJS_1_1Value.html">Value</a> <a class="code" href="classKJS_1_1NumberObjectImp.html#a5">NumberObjectImp::get</a>(<a class="code" href="classKJS_1_1ExecState.html">ExecState</a> *exec, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Identifier.html">Identifier</a> &amp;propertyName)<span class="keyword"> const</span>
<a name="l00455"></a>00455 <span class="keyword"></span>{
<a name="l00456"></a>00456   <span class="keywordflow">return</span> lookupGetValue&lt;NumberObjectImp, InternalFunctionImp&gt;( exec, propertyName, &amp;<a class="code" href="namespaceKJS.html#a89">numberTable</a>, this );
<a name="l00457"></a>00457 }
<a name="l00458"></a>00458 
<a name="l00459"></a><a class="code" href="classKJS_1_1NumberObjectImp.html#a6">00459</a> <a class="code" href="classKJS_1_1Value.html">Value</a> <a class="code" href="classKJS_1_1NumberObjectImp.html#a6">NumberObjectImp::getValueProperty</a>(<a class="code" href="classKJS_1_1ExecState.html">ExecState</a> *, <span class="keywordtype">int</span> token)<span class="keyword"> const</span>
<a name="l00460"></a>00460 <span class="keyword"></span>{
<a name="l00461"></a>00461   <span class="comment">// ECMA 15.7.3</span>
<a name="l00462"></a>00462   <span class="keywordflow">switch</span>(token) {
<a name="l00463"></a>00463   <span class="keywordflow">case</span> NaNValue:
<a name="l00464"></a>00464     <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html">Number</a>(<a class="code" href="namespaceKJS.html#a36">NaN</a>);
<a name="l00465"></a>00465   <span class="keywordflow">case</span> NegInfinity:
<a name="l00466"></a>00466     <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html">Number</a>(-<a class="code" href="namespaceKJS.html#a37">Inf</a>);
<a name="l00467"></a>00467   <span class="keywordflow">case</span> PosInfinity:
<a name="l00468"></a>00468     <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html">Number</a>(<a class="code" href="namespaceKJS.html#a37">Inf</a>);
<a name="l00469"></a>00469   <span class="keywordflow">case</span> MaxValue:
<a name="l00470"></a>00470     <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html">Number</a>(1.7976931348623157E+308);
<a name="l00471"></a>00471   <span class="keywordflow">case</span> MinValue:
<a name="l00472"></a>00472     <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html">Number</a>(5E-324);
<a name="l00473"></a>00473   }
<a name="l00474"></a>00474   <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Null.html">Null</a>();
<a name="l00475"></a>00475 }
<a name="l00476"></a>00476 
<a name="l00477"></a><a class="code" href="classKJS_1_1NumberObjectImp.html#a1">00477</a> <span class="keywordtype">bool</span> <a class="code" href="classKJS_1_1NumberObjectImp.html#a1">NumberObjectImp::implementsConstruct</a>()<span class="keyword"> const</span>
<a name="l00478"></a>00478 <span class="keyword"></span>{
<a name="l00479"></a>00479   <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00480"></a>00480 }
<a name="l00481"></a>00481 
<a name="l00482"></a>00482 
<a name="l00483"></a>00483 <span class="comment">// ECMA 15.7.1</span>
<a name="l00484"></a><a class="code" href="classKJS_1_1NumberObjectImp.html#a2">00484</a> <a class="code" href="classKJS_1_1Object.html">Object</a> <a class="code" href="classKJS_1_1NumberObjectImp.html#a2">NumberObjectImp::construct</a>(<a class="code" href="classKJS_1_1ExecState.html">ExecState</a> *exec, <span class="keyword">const</span> <a class="code" href="classKJS_1_1List.html">List</a> &amp;args)
<a name="l00485"></a>00485 {
<a name="l00486"></a>00486   <a class="code" href="classKJS_1_1ObjectImp.html">ObjectImp</a> *proto = exec-&gt;<a class="code" href="classKJS_1_1ExecState.html#a2">lexicalInterpreter</a>()-&gt;<a class="code" href="classKJS_1_1Interpreter.html#a24">builtinNumberPrototype</a>().<a class="code" href="classKJS_1_1Object.html#a2">imp</a>();
<a name="l00487"></a>00487   <a class="code" href="classKJS_1_1Object.html">Object</a> obj(<span class="keyword">new</span> <a class="code" href="classKJS_1_1NumberInstanceImp.html">NumberInstanceImp</a>(proto));
<a name="l00488"></a>00488 
<a name="l00489"></a>00489   <a class="code" href="classKJS_1_1Number.html">Number</a> n;
<a name="l00490"></a>00490   <span class="keywordflow">if</span> (args.<a class="code" href="classKJS_1_1List.html#a10">isEmpty</a>())
<a name="l00491"></a>00491     n = <a class="code" href="classKJS_1_1Number.html">Number</a>(0);
<a name="l00492"></a>00492   <span class="keywordflow">else</span>
<a name="l00493"></a>00493     n = args[0].toNumber(exec);
<a name="l00494"></a>00494 
<a name="l00495"></a>00495   obj.<a class="code" href="classKJS_1_1Object.html#a27">setInternalValue</a>(n);
<a name="l00496"></a>00496 
<a name="l00497"></a>00497   <span class="keywordflow">return</span> obj;
<a name="l00498"></a>00498 }
<a name="l00499"></a>00499 
<a name="l00500"></a><a class="code" href="classKJS_1_1NumberObjectImp.html#a3">00500</a> <span class="keywordtype">bool</span> <a class="code" href="classKJS_1_1NumberObjectImp.html#a3">NumberObjectImp::implementsCall</a>()<span class="keyword"> const</span>
<a name="l00501"></a>00501 <span class="keyword"></span>{
<a name="l00502"></a>00502   <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00503"></a>00503 }
<a name="l00504"></a>00504 
<a name="l00505"></a>00505 <span class="comment">// ECMA 15.7.2</span>
<a name="l00506"></a><a class="code" href="classKJS_1_1NumberObjectImp.html#a4">00506</a> <a class="code" href="classKJS_1_1Value.html">Value</a> <a class="code" href="classKJS_1_1NumberObjectImp.html#a4">NumberObjectImp::call</a>(<a class="code" href="classKJS_1_1ExecState.html">ExecState</a> *exec, <a class="code" href="classKJS_1_1Object.html">Object</a> &amp;<span class="comment">/*thisObj*/</span>, <span class="keyword">const</span> <a class="code" href="classKJS_1_1List.html">List</a> &amp;args)
<a name="l00507"></a>00507 {
<a name="l00508"></a>00508   <span class="keywordflow">if</span> (args.<a class="code" href="classKJS_1_1List.html#a10">isEmpty</a>())
<a name="l00509"></a>00509     <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html">Number</a>(0);
<a name="l00510"></a>00510   <span class="keywordflow">else</span>
<a name="l00511"></a>00511     <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html">Number</a>(args[0].<a class="code" href="classKJS_1_1ObjectImp.html#a36">toNumber</a>(exec));
<a name="l00512"></a>00512 }
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value="classKJS_1_1StringProtoFuncImp.html">kjs::stringprotofuncimp</option>,  <option value="classKJS_1_1StringPrototypeImp.html">kjs::stringprototypeimp</option>,  <option value="classKJS_1_1SwitchNode.html">kjs::switchnode</option>,  <option value="classKJS_1_1ThisNode.html">kjs::thisnode</option>,  <option value="classKJS_1_1ThrowNode.html">kjs::thrownode</option>,  <option value="classKJS_1_1TryNode.html">kjs::trynode</option>,  <option value="classKJS_1_1TypeOfNode.html">kjs::typeofnode</option>,  <option value="classKJS_1_1UCharReference.html">kjs::ucharreference</option>,  <option value="classKJS_1_1UnaryPlusNode.html">kjs::unaryplusnode</option>,  <option value="classKJS_1_1Undefined.html">kjs::undefined</option>,  <option value="classKJS_1_1UndefinedImp.html">kjs::undefinedimp</option>,  <option value="classKJS_1_1UString.html">kjs::ustring</option>,  <option value="classKJS_1_1Value.html">kjs::value</option>,  <option value="classKJS_1_1ValueImp.html">kjs::valueimp</option>, 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