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<div class="title">math_object.cpp</div> </div>
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<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"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
<a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span>
<a name="l00008"></a>00008 <span class="comment"> * License as published by the Free Software Foundation; either</span>
<a name="l00009"></a>00009 <span class="comment"> * version 2 of the License, or (at your option) any later version.</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> * This library is distributed in the hope that it will be useful,</span>
<a name="l00012"></a>00012 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00014"></a>00014 <span class="comment"> * Lesser General Public License for more details.</span>
<a name="l00015"></a>00015 <span class="comment"> *</span>
<a name="l00016"></a>00016 <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span>
<a name="l00017"></a>00017 <span class="comment"> * License along with this library; if not, write to the Free Software</span>
<a name="l00018"></a>00018 <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span>
<a name="l00019"></a>00019 <span class="comment"> *</span>
<a name="l00020"></a>00020 <span class="comment"> */</span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="preprocessor">#include <math.h></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <stdio.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <assert.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <time.h></span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="preprocessor">#include "value.h"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "object.h"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "types.h"</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "interpreter.h"</span>
<a name="l00032"></a>00032 <span class="preprocessor">#include "operations.h"</span>
<a name="l00033"></a>00033 <span class="preprocessor">#include "math_object.h"</span>
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="preprocessor">#include "math_object.lut.h"</span>
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="preprocessor">#ifndef M_PI</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#define M_PI 3.14159265358979323846</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* M_PI */</span>
<a name="l00040"></a>00040
<a name="l00041"></a>00041 <span class="preprocessor">#ifndef signbit</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span><span class="preprocessor">#define signbit(x) ((x) < 0.0 || IS_NEGATIVE_ZERO(x))</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span>
<a name="l00045"></a>00045 <span class="keyword">using namespace </span>KJS;
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="comment">// ------------------------------ MathObjectImp --------------------------------</span>
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="keyword">const</span> <a class="code" href="structKJS_1_1ClassInfo.html" title="Class Information.">ClassInfo</a> MathObjectImp::info = { <span class="stringliteral">"Math"</span>, 0, &mathTable, 0 };
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="comment">/* Source for math_object.lut.h</span>
<a name="l00052"></a>00052 <span class="comment">@begin mathTable 31</span>
<a name="l00053"></a>00053 <span class="comment"> E MathObjectImp::Euler DontEnum|DontDelete|ReadOnly</span>
<a name="l00054"></a>00054 <span class="comment"> LN2 MathObjectImp::Ln2 DontEnum|DontDelete|ReadOnly</span>
<a name="l00055"></a>00055 <span class="comment"> LN10 MathObjectImp::Ln10 DontEnum|DontDelete|ReadOnly</span>
<a name="l00056"></a>00056 <span class="comment"> LOG2E MathObjectImp::Log2E DontEnum|DontDelete|ReadOnly</span>
<a name="l00057"></a>00057 <span class="comment"> LOG10E MathObjectImp::Log10E DontEnum|DontDelete|ReadOnly</span>
<a name="l00058"></a>00058 <span class="comment"> PI MathObjectImp::Pi DontEnum|DontDelete|ReadOnly</span>
<a name="l00059"></a>00059 <span class="comment"> SQRT1_2 MathObjectImp::Sqrt1_2 DontEnum|DontDelete|ReadOnly</span>
<a name="l00060"></a>00060 <span class="comment"> SQRT2 MathObjectImp::Sqrt2 DontEnum|DontDelete|ReadOnly</span>
<a name="l00061"></a>00061 <span class="comment"> abs MathObjectImp::Abs DontEnum|Function 1</span>
<a name="l00062"></a>00062 <span class="comment"> acos MathObjectImp::ACos DontEnum|Function 1</span>
<a name="l00063"></a>00063 <span class="comment"> asin MathObjectImp::ASin DontEnum|Function 1</span>
<a name="l00064"></a>00064 <span class="comment"> atan MathObjectImp::ATan DontEnum|Function 1</span>
<a name="l00065"></a>00065 <span class="comment"> atan2 MathObjectImp::ATan2 DontEnum|Function 2</span>
<a name="l00066"></a>00066 <span class="comment"> ceil MathObjectImp::Ceil DontEnum|Function 1</span>
<a name="l00067"></a>00067 <span class="comment"> cos MathObjectImp::Cos DontEnum|Function 1</span>
<a name="l00068"></a>00068 <span class="comment"> exp MathObjectImp::Exp DontEnum|Function 1</span>
<a name="l00069"></a>00069 <span class="comment"> floor MathObjectImp::Floor DontEnum|Function 1</span>
<a name="l00070"></a>00070 <span class="comment"> log MathObjectImp::Log DontEnum|Function 1</span>
<a name="l00071"></a>00071 <span class="comment"> max MathObjectImp::Max DontEnum|Function 2</span>
<a name="l00072"></a>00072 <span class="comment"> min MathObjectImp::Min DontEnum|Function 2</span>
<a name="l00073"></a>00073 <span class="comment"> pow MathObjectImp::Pow DontEnum|Function 2</span>
<a name="l00074"></a>00074 <span class="comment"> random MathObjectImp::Random DontEnum|Function 0</span>
<a name="l00075"></a>00075 <span class="comment"> round MathObjectImp::Round DontEnum|Function 1</span>
<a name="l00076"></a>00076 <span class="comment"> sin MathObjectImp::Sin DontEnum|Function 1</span>
<a name="l00077"></a>00077 <span class="comment"> sqrt MathObjectImp::Sqrt DontEnum|Function 1</span>
<a name="l00078"></a>00078 <span class="comment"> tan MathObjectImp::Tan DontEnum|Function 1</span>
<a name="l00079"></a>00079 <span class="comment">@end</span>
<a name="l00080"></a>00080 <span class="comment">*/</span>
<a name="l00081"></a>00081
<a name="l00082"></a>00082 MathObjectImp::MathObjectImp(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> * <span class="comment">/*exec*/</span>,
<a name="l00083"></a>00083 ObjectPrototypeImp *objProto)
<a name="l00084"></a>00084 : ObjectImp(objProto)
<a name="l00085"></a>00085 {
<a name="l00086"></a>00086 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> seed = time(NULL);
<a name="l00087"></a>00087 ::srand(seed);
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <span class="comment">// ECMA 15.8</span>
<a name="l00091"></a>00091 <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> MathObjectImp::get(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *exec, <span class="keyword">const</span> <a class="code" href="classKJS_1_1Identifier.html" title="Represents an Identifier for a Javascript object.">Identifier</a> &propertyName)<span class="keyword"> const</span>
<a name="l00092"></a>00092 <span class="keyword"></span>{
<a name="l00093"></a>00093 <span class="keywordflow">return</span> lookupGet<MathFuncImp, MathObjectImp, ObjectImp>( exec, propertyName, &mathTable, this );
<a name="l00094"></a>00094 }
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> MathObjectImp::getValueProperty(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *, <span class="keywordtype">int</span> token)<span class="keyword"> const</span>
<a name="l00097"></a>00097 <span class="keyword"></span>{
<a name="l00098"></a>00098 <span class="keywordtype">double</span> d = -42; <span class="comment">// ;)</span>
<a name="l00099"></a>00099 <span class="keywordflow">switch</span> (token) {
<a name="l00100"></a>00100 <span class="keywordflow">case</span> Euler:
<a name="l00101"></a>00101 d = exp(1.0);
<a name="l00102"></a>00102 <span class="keywordflow">break</span>;
<a name="l00103"></a>00103 <span class="keywordflow">case</span> Ln2:
<a name="l00104"></a>00104 d = log(2.0);
<a name="l00105"></a>00105 <span class="keywordflow">break</span>;
<a name="l00106"></a>00106 <span class="keywordflow">case</span> Ln10:
<a name="l00107"></a>00107 d = log(10.0);
<a name="l00108"></a>00108 <span class="keywordflow">break</span>;
<a name="l00109"></a>00109 <span class="keywordflow">case</span> Log2E:
<a name="l00110"></a>00110 d = 1.0/log(2.0);
<a name="l00111"></a>00111 <span class="keywordflow">break</span>;
<a name="l00112"></a>00112 <span class="keywordflow">case</span> Log10E:
<a name="l00113"></a>00113 d = 1.0/log(10.0);
<a name="l00114"></a>00114 <span class="keywordflow">break</span>;
<a name="l00115"></a>00115 <span class="keywordflow">case</span> Pi:
<a name="l00116"></a>00116 d = M_PI;
<a name="l00117"></a>00117 <span class="keywordflow">break</span>;
<a name="l00118"></a>00118 <span class="keywordflow">case</span> Sqrt1_2:
<a name="l00119"></a>00119 d = sqrt(0.5);
<a name="l00120"></a>00120 <span class="keywordflow">break</span>;
<a name="l00121"></a>00121 <span class="keywordflow">case</span> Sqrt2:
<a name="l00122"></a>00122 d = sqrt(2.0);
<a name="l00123"></a>00123 <span class="keywordflow">break</span>;
<a name="l00124"></a>00124 <span class="keywordflow">default</span>:
<a name="l00125"></a>00125 fprintf( stderr, <span class="stringliteral">"Internal error in MathObjectImp: unhandled token %d\n"</span>, token );
<a name="l00126"></a>00126 <span class="keywordflow">break</span>;
<a name="l00127"></a>00127 }
<a name="l00128"></a>00128
<a name="l00129"></a>00129 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html" title="Represents an primitive Number value.">Number</a>(d);
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="comment">// ------------------------------ MathObjectImp --------------------------------</span>
<a name="l00133"></a>00133
<a name="l00134"></a>00134 MathFuncImp::MathFuncImp(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *exec, <span class="keywordtype">int</span> i, <span class="keywordtype">int</span> l)
<a name="l00135"></a>00135 : <a class="code" href="classKJS_1_1InternalFunctionImp.html" title="Base class for all function objects.">InternalFunctionImp</a>(
<a name="l00136"></a>00136 static_cast<<a class="code" href="classKJS_1_1FunctionPrototypeImp.html" title="The initial value of Function.prototype (and thus all objects created with the Function constructor)...">FunctionPrototypeImp</a>*>(exec->lexicalInterpreter()->builtinFunctionPrototype().imp())
<a name="l00137"></a>00137 ), id(i)
<a name="l00138"></a>00138 {
<a name="l00139"></a>00139 <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> protect(<span class="keyword">this</span>);
<a name="l00140"></a>00140 putDirect(lengthPropertyName, l, DontDelete|ReadOnly|DontEnum);
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142
<a name="l00143"></a>00143 <span class="keywordtype">bool</span> MathFuncImp::implementsCall()<span class="keyword"> const</span>
<a name="l00144"></a>00144 <span class="keyword"></span>{
<a name="l00145"></a>00145 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00146"></a>00146 }
<a name="l00147"></a>00147
<a name="l00148"></a>00148 <a class="code" href="classKJS_1_1Value.html" title="Value objects are act as wrappers ("smart pointers") around ValueImp objects and their descendents...">Value</a> MathFuncImp::call(<a class="code" href="classKJS_1_1ExecState.html" title="Represents the current state of script execution.">ExecState</a> *exec, <a class="code" href="classKJS_1_1Object.html" title="Represents an Object.">Object</a> &<span class="comment">/*thisObj*/</span>, <span class="keyword">const</span> <a class="code" href="classKJS_1_1List.html" title="Native list type.">List</a> &args)
<a name="l00149"></a>00149 {
<a name="l00150"></a>00150 <span class="keywordtype">double</span> arg = args[0].toNumber(exec);
<a name="l00151"></a>00151 <span class="keywordtype">double</span> arg2 = args[1].toNumber(exec);
<a name="l00152"></a>00152 <span class="keywordtype">double</span> result;
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="keywordflow">switch</span> (<span class="keywordtype">id</span>) {
<a name="l00155"></a>00155 <span class="keywordflow">case</span> MathObjectImp::Abs:
<a name="l00156"></a>00156 result = ( arg < 0 || arg == -0) ? (-arg) : arg;
<a name="l00157"></a>00157 <span class="keywordflow">break</span>;
<a name="l00158"></a>00158 <span class="keywordflow">case</span> MathObjectImp::ACos:
<a name="l00159"></a>00159 result = ::acos(arg);
<a name="l00160"></a>00160 <span class="keywordflow">break</span>;
<a name="l00161"></a>00161 <span class="keywordflow">case</span> MathObjectImp::ASin:
<a name="l00162"></a>00162 result = ::asin(arg);
<a name="l00163"></a>00163 <span class="keywordflow">break</span>;
<a name="l00164"></a>00164 <span class="keywordflow">case</span> MathObjectImp::ATan:
<a name="l00165"></a>00165 result = ::atan(arg);
<a name="l00166"></a>00166 <span class="keywordflow">break</span>;
<a name="l00167"></a>00167 <span class="keywordflow">case</span> MathObjectImp::ATan2:
<a name="l00168"></a>00168 result = ::atan2(arg, arg2);
<a name="l00169"></a>00169 <span class="keywordflow">break</span>;
<a name="l00170"></a>00170 <span class="keywordflow">case</span> MathObjectImp::Ceil:
<a name="l00171"></a>00171 result = ::ceil(arg);
<a name="l00172"></a>00172 <span class="keywordflow">break</span>;
<a name="l00173"></a>00173 <span class="keywordflow">case</span> MathObjectImp::Cos:
<a name="l00174"></a>00174 result = ::cos(arg);
<a name="l00175"></a>00175 <span class="keywordflow">break</span>;
<a name="l00176"></a>00176 <span class="keywordflow">case</span> MathObjectImp::Exp:
<a name="l00177"></a>00177 result = ::exp(arg);
<a name="l00178"></a>00178 <span class="keywordflow">break</span>;
<a name="l00179"></a>00179 <span class="keywordflow">case</span> MathObjectImp::Floor:
<a name="l00180"></a>00180 result = ::floor(arg);
<a name="l00181"></a>00181 <span class="keywordflow">break</span>;
<a name="l00182"></a>00182 <span class="keywordflow">case</span> MathObjectImp::Log:
<a name="l00183"></a>00183 result = ::log(arg);
<a name="l00184"></a>00184 <span class="keywordflow">break</span>;
<a name="l00185"></a>00185 <span class="keywordflow">case</span> MathObjectImp::Max: {
<a name="l00186"></a>00186 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> argsCount = args.<a class="code" href="classKJS_1_1List.html#a69835b1e6671235343b0a17923b92c43">size</a>();
<a name="l00187"></a>00187 result = -Inf;
<a name="l00188"></a>00188 <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> k = 0 ; k < argsCount ; ++k ) {
<a name="l00189"></a>00189 <span class="keywordtype">double</span> val = args[k].toNumber(exec);
<a name="l00190"></a>00190 <span class="keywordflow">if</span> ( isNaN( val ) )
<a name="l00191"></a>00191 {
<a name="l00192"></a>00192 result = NaN;
<a name="l00193"></a>00193 <span class="keywordflow">break</span>;
<a name="l00194"></a>00194 }
<a name="l00195"></a>00195 <span class="keywordflow">if</span> ( val > result || (val == 0 && result == 0 && !signbit(val)) )
<a name="l00196"></a>00196 result = val;
<a name="l00197"></a>00197 }
<a name="l00198"></a>00198 <span class="keywordflow">break</span>;
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200 <span class="keywordflow">case</span> MathObjectImp::Min: {
<a name="l00201"></a>00201 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> argsCount = args.<a class="code" href="classKJS_1_1List.html#a69835b1e6671235343b0a17923b92c43">size</a>();
<a name="l00202"></a>00202 result = +Inf;
<a name="l00203"></a>00203 <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> k = 0 ; k < argsCount ; ++k ) {
<a name="l00204"></a>00204 <span class="keywordtype">double</span> val = args[k].toNumber(exec);
<a name="l00205"></a>00205 <span class="keywordflow">if</span> ( isNaN( val ) )
<a name="l00206"></a>00206 {
<a name="l00207"></a>00207 result = NaN;
<a name="l00208"></a>00208 <span class="keywordflow">break</span>;
<a name="l00209"></a>00209 }
<a name="l00210"></a>00210 <span class="keywordflow">if</span> ( val < result || (val == 0 && result == 0 && signbit(val)) )
<a name="l00211"></a>00211 result = val;
<a name="l00212"></a>00212 }
<a name="l00213"></a>00213 <span class="keywordflow">break</span>;
<a name="l00214"></a>00214 }
<a name="l00215"></a>00215 <span class="keywordflow">case</span> MathObjectImp::Pow:
<a name="l00216"></a>00216 <span class="comment">// ECMA 15.8.2.1.13 (::pow takes care of most of the critera)</span>
<a name="l00217"></a>00217 <span class="keywordflow">if</span> (KJS::isNaN(arg2))
<a name="l00218"></a>00218 result = NaN;
<a name="l00219"></a>00219 <span class="preprocessor">#ifndef APPLE_CHANGES</span>
<a name="l00220"></a>00220 <span class="preprocessor"></span> <span class="keywordflow">else</span> <span class="keywordflow">if</span> (arg2 == 0)
<a name="l00221"></a>00221 result = 1;
<a name="l00222"></a>00222 <span class="preprocessor">#endif</span>
<a name="l00223"></a>00223 <span class="preprocessor"></span> <span class="keywordflow">else</span> <span class="keywordflow">if</span> (KJS::isNaN(arg) && arg2 != 0)
<a name="l00224"></a>00224 result = NaN;
<a name="l00225"></a>00225 <span class="preprocessor">#ifndef APPLE_CHANGES</span>
<a name="l00226"></a>00226 <span class="preprocessor"></span> <span class="keywordflow">else</span> <span class="keywordflow">if</span> (::fabs(arg) > 1 && KJS::isPosInf(arg2))
<a name="l00227"></a>00227 result = Inf;
<a name="l00228"></a>00228 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (::fabs(arg) > 1 && KJS::isNegInf(arg2))
<a name="l00229"></a>00229 result = +0;
<a name="l00230"></a>00230 <span class="preprocessor">#endif</span>
<a name="l00231"></a>00231 <span class="preprocessor"></span> <span class="keywordflow">else</span> <span class="keywordflow">if</span> (::fabs(arg) == 1 && KJS::isInf(arg2))
<a name="l00232"></a>00232 result = NaN;
<a name="l00233"></a>00233 <span class="preprocessor">#ifndef APPLE_CHANGES</span>
<a name="l00234"></a>00234 <span class="preprocessor"></span> <span class="keywordflow">else</span> <span class="keywordflow">if</span> (::fabs(arg) < 1 && KJS::isPosInf(arg2))
<a name="l00235"></a>00235 result = +0;
<a name="l00236"></a>00236 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (::fabs(arg) < 1 && KJS::isNegInf(arg2))
<a name="l00237"></a>00237 result = Inf;
<a name="l00238"></a>00238 <span class="preprocessor">#endif</span>
<a name="l00239"></a>00239 <span class="preprocessor"></span> <span class="keywordflow">else</span>
<a name="l00240"></a>00240 result = ::pow(arg, arg2);
<a name="l00241"></a>00241 <span class="keywordflow">break</span>;
<a name="l00242"></a>00242 <span class="keywordflow">case</span> MathObjectImp::Random:
<a name="l00243"></a>00243 result = ::rand();
<a name="l00244"></a>00244 result = result / RAND_MAX;
<a name="l00245"></a>00245 <span class="keywordflow">break</span>;
<a name="l00246"></a>00246 <span class="keywordflow">case</span> MathObjectImp::Round:
<a name="l00247"></a>00247 <span class="keywordflow">if</span> (signbit(arg) && arg >= -0.5)
<a name="l00248"></a>00248 result = -0.0;
<a name="l00249"></a>00249 <span class="keywordflow">else</span>
<a name="l00250"></a>00250 result = ::floor(arg + 0.5);
<a name="l00251"></a>00251 <span class="keywordflow">break</span>;
<a name="l00252"></a>00252 <span class="keywordflow">case</span> MathObjectImp::Sin:
<a name="l00253"></a>00253 result = ::sin(arg);
<a name="l00254"></a>00254 <span class="keywordflow">break</span>;
<a name="l00255"></a>00255 <span class="keywordflow">case</span> MathObjectImp::Sqrt:
<a name="l00256"></a>00256 result = ::sqrt(arg);
<a name="l00257"></a>00257 <span class="keywordflow">break</span>;
<a name="l00258"></a>00258 <span class="keywordflow">case</span> MathObjectImp::Tan:
<a name="l00259"></a>00259 result = ::tan(arg);
<a name="l00260"></a>00260 <span class="keywordflow">break</span>;
<a name="l00261"></a>00261
<a name="l00262"></a>00262 <span class="keywordflow">default</span>:
<a name="l00263"></a>00263 result = 0.0;
<a name="l00264"></a>00264 assert(0);
<a name="l00265"></a>00265 }
<a name="l00266"></a>00266
<a name="l00267"></a>00267 <span class="keywordflow">return</span> <a class="code" href="classKJS_1_1Number.html" title="Represents an primitive Number value.">Number</a>(result);
<a name="l00268"></a>00268 }
</pre></div></div>
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