diff options
Diffstat (limited to 'doc/html/fast__atof_8h_source.html')
| -rw-r--r-- | doc/html/fast__atof_8h_source.html | 428 |
1 files changed, 428 insertions, 0 deletions
diff --git a/doc/html/fast__atof_8h_source.html b/doc/html/fast__atof_8h_source.html new file mode 100644 index 0000000..2db9c1f --- /dev/null +++ b/doc/html/fast__atof_8h_source.html @@ -0,0 +1,428 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml"> +<head> +<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> +<title>Irrlicht 3D Engine: fast_atof.h Source File</title> + +<link href="tabs.css" rel="stylesheet" type="text/css"/> +<link href="doxygen.css" rel="stylesheet" type="text/css" /> +<link href="navtree.css" rel="stylesheet" type="text/css"/> +<script type="text/javascript" src="jquery.js"></script> +<script type="text/javascript" src="resize.js"></script> +<script type="text/javascript" src="navtree.js"></script> +<script type="text/javascript"> + $(document).ready(initResizable); +</script> +<link href="search/search.css" rel="stylesheet" type="text/css"/> +<script type="text/javascript" src="search/search.js"></script> +<script type="text/javascript"> + $(document).ready(function() { searchBox.OnSelectItem(0); }); +</script> + +</head> +<body> +<div id="top"><!-- do not remove this div! --> + + +<div id="titlearea"> +<table cellspacing="0" cellpadding="0"> + <tbody> + <tr style="height: 56px;"> + + <td id="projectlogo"><img alt="Logo" src="irrlichtlogo.png"/></td> + + + <td style="padding-left: 0.5em;"> + <div id="projectname">Irrlicht 3D Engine + + </div> + + </td> + + + + + <td> <div id="MSearchBox" class="MSearchBoxInactive"> + <span class="left"> + <img id="MSearchSelect" src="search/mag_sel.png" + onmouseover="return searchBox.OnSearchSelectShow()" + onmouseout="return searchBox.OnSearchSelectHide()" + alt=""/> + <input type="text" id="MSearchField" value="Search" accesskey="S" + onfocus="searchBox.OnSearchFieldFocus(true)" + onblur="searchBox.OnSearchFieldFocus(false)" + onkeyup="searchBox.OnSearchFieldChange(event)"/> + </span><span class="right"> + <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a> + </span> + </div> +</td> + + + </tr> + </tbody> +</table> +</div> + +<!-- Generated by Doxygen 1.7.5.1 --> +<script type="text/javascript"> +var searchBox = new SearchBox("searchBox", "search",false,'Search'); +</script> +<script type="text/javascript" src="dynsections.js"></script> +</div> +<div id="side-nav" class="ui-resizable side-nav-resizable"> + <div id="nav-tree"> + <div id="nav-tree-contents"> + </div> + </div> + <div id="splitbar" style="-moz-user-select:none;" + class="ui-resizable-handle"> + </div> +</div> +<script type="text/javascript"> + initNavTree('fast__atof_8h.html',''); +</script> +<div id="doc-content"> +<div class="header"> + <div class="headertitle"> +<div class="title">fast_atof.h</div> </div> +</div> +<div class="contents"> +<a href="fast__atof_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (C) 2002-2012 Nikolaus Gebhardt</span> +<a name="l00002"></a>00002 <span class="comment">// This file is part of the "Irrlicht Engine" and the "irrXML" project.</span> +<a name="l00003"></a>00003 <span class="comment">// For conditions of distribution and use, see copyright notice in irrlicht.h and irrXML.h</span> +<a name="l00004"></a>00004 +<a name="l00005"></a>00005 <span class="preprocessor">#ifndef __FAST_ATOF_H_INCLUDED__</span> +<a name="l00006"></a>00006 <span class="preprocessor"></span><span class="preprocessor">#define __FAST_ATOF_H_INCLUDED__</span> +<a name="l00007"></a>00007 <span class="preprocessor"></span> +<a name="l00008"></a>00008 <span class="preprocessor">#include "<a class="code" href="irr_math_8h.html">irrMath.h</a>"</span> +<a name="l00009"></a>00009 <span class="preprocessor">#include "<a class="code" href="irr_string_8h.html">irrString.h</a>"</span> +<a name="l00010"></a>00010 +<a name="l00011"></a>00011 <span class="keyword">namespace </span>irr +<a name="l00012"></a>00012 { +<a name="l00013"></a>00013 <span class="keyword">namespace </span>core +<a name="l00014"></a>00014 { +<a name="l00016"></a>00016 <span class="comment">// TODO: This should probably also be used in irr::core::string, but the float-to-string code</span> +<a name="l00017"></a>00017 <span class="comment">// used there has to be rewritten first.</span> +<a name="l00018"></a>00018 <a class="code" href="_irr_compile_config_8h.html#aa93137544a73eaa2563931a1e665862d" title="Set FPU settings.">IRRLICHT_API</a> <span class="keyword">extern</span> <a class="code" href="classirr_1_1core_1_1string.html">irr::core::stringc</a> <a class="code" href="namespaceirr_1_1core.html#ac9e193c6850509dfee97f942b5f121a5" title="Selection of characters which count as decimal point in fast_atof.">LOCALE_DECIMAL_POINTS</a>; +<a name="l00019"></a>00019 +<a name="l00020"></a><a class="code" href="fast__atof_8h.html#a563662fd28fd7f0663b2a1b91076afa6">00020</a> <span class="preprocessor">#define IRR_ATOF_TABLE_SIZE 17</span> +<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="comment">// we write [IRR_ATOF_TABLE_SIZE] here instead of [] to work around a swig bug</span> +<a name="l00022"></a><a class="code" href="namespaceirr_1_1core.html#ae473ba500eefc080b4680e3445e44b02">00022</a> <span class="keyword">const</span> <span class="keywordtype">float</span> <a class="code" href="namespaceirr_1_1core.html#ae473ba500eefc080b4680e3445e44b02">fast_atof_table</a>[17] = { +<a name="l00023"></a>00023 0.f, +<a name="l00024"></a>00024 0.1f, +<a name="l00025"></a>00025 0.01f, +<a name="l00026"></a>00026 0.001f, +<a name="l00027"></a>00027 0.0001f, +<a name="l00028"></a>00028 0.00001f, +<a name="l00029"></a>00029 0.000001f, +<a name="l00030"></a>00030 0.0000001f, +<a name="l00031"></a>00031 0.00000001f, +<a name="l00032"></a>00032 0.000000001f, +<a name="l00033"></a>00033 0.0000000001f, +<a name="l00034"></a>00034 0.00000000001f, +<a name="l00035"></a>00035 0.000000000001f, +<a name="l00036"></a>00036 0.0000000000001f, +<a name="l00037"></a>00037 0.00000000000001f, +<a name="l00038"></a>00038 0.000000000000001f, +<a name="l00039"></a>00039 0.0000000000000001f +<a name="l00040"></a>00040 }; +<a name="l00041"></a>00041 +<a name="l00043"></a>00043 +<a name="l00050"></a><a class="code" href="namespaceirr_1_1core.html#ae7f759b603f4caaa8471cb9bc2e23648">00050</a> <span class="keyword">inline</span> <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> <a class="code" href="namespaceirr_1_1core.html#ae7f759b603f4caaa8471cb9bc2e23648" title="Convert a simple string of base 10 digits into an unsigned 32 bit integer.">strtoul10</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* in, <span class="keyword">const</span> <span class="keywordtype">char</span>** out=0) +<a name="l00051"></a>00051 { +<a name="l00052"></a>00052 <span class="keywordflow">if</span> (!in) +<a name="l00053"></a>00053 { +<a name="l00054"></a>00054 <span class="keywordflow">if</span> (out) +<a name="l00055"></a>00055 *out = in; +<a name="l00056"></a>00056 <span class="keywordflow">return</span> 0; +<a name="l00057"></a>00057 } +<a name="l00058"></a>00058 +<a name="l00059"></a>00059 <span class="keywordtype">bool</span> overflow=<span class="keyword">false</span>; +<a name="l00060"></a>00060 <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> unsignedValue = 0; +<a name="l00061"></a>00061 <span class="keywordflow">while</span> ( ( *in >= <span class="charliteral">'0'</span>) && ( *in <= <span class="charliteral">'9'</span> )) +<a name="l00062"></a>00062 { +<a name="l00063"></a>00063 <span class="keyword">const</span> <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> tmp = ( unsignedValue * 10 ) + ( *in - <span class="charliteral">'0'</span> ); +<a name="l00064"></a>00064 <span class="keywordflow">if</span> (tmp<unsignedValue) +<a name="l00065"></a>00065 { +<a name="l00066"></a>00066 unsignedValue=(<a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a>)0xffffffff; +<a name="l00067"></a>00067 overflow=<span class="keyword">true</span>; +<a name="l00068"></a>00068 } +<a name="l00069"></a>00069 <span class="keywordflow">if</span> (!overflow) +<a name="l00070"></a>00070 unsignedValue = tmp; +<a name="l00071"></a>00071 ++in; +<a name="l00072"></a>00072 } +<a name="l00073"></a>00073 +<a name="l00074"></a>00074 <span class="keywordflow">if</span> (out) +<a name="l00075"></a>00075 *out = in; +<a name="l00076"></a>00076 +<a name="l00077"></a>00077 <span class="keywordflow">return</span> unsignedValue; +<a name="l00078"></a>00078 } +<a name="l00079"></a>00079 +<a name="l00081"></a>00081 +<a name="l00090"></a><a class="code" href="namespaceirr_1_1core.html#a6ff97e442233218d18acd56add48766f">00090</a> <span class="keyword">inline</span> <a class="code" href="namespaceirr.html#ac66849b7a6ed16e30ebede579f9b47c6" title="32 bit signed variable.">s32</a> <a class="code" href="namespaceirr_1_1core.html#a6ff97e442233218d18acd56add48766f" title="Convert a simple string of base 10 digits into a signed 32 bit integer.">strtol10</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* in, <span class="keyword">const</span> <span class="keywordtype">char</span>** out=0) +<a name="l00091"></a>00091 { +<a name="l00092"></a>00092 <span class="keywordflow">if</span> (!in) +<a name="l00093"></a>00093 { +<a name="l00094"></a>00094 <span class="keywordflow">if</span> (out) +<a name="l00095"></a>00095 *out = in; +<a name="l00096"></a>00096 <span class="keywordflow">return</span> 0; +<a name="l00097"></a>00097 } +<a name="l00098"></a>00098 +<a name="l00099"></a>00099 <span class="keyword">const</span> <span class="keywordtype">bool</span> negative = (<span class="charliteral">'-'</span> == *in); +<a name="l00100"></a>00100 <span class="keywordflow">if</span> (negative || (<span class="charliteral">'+'</span> == *in)) +<a name="l00101"></a>00101 ++in; +<a name="l00102"></a>00102 +<a name="l00103"></a>00103 <span class="keyword">const</span> <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> unsignedValue = <a class="code" href="namespaceirr_1_1core.html#ae7f759b603f4caaa8471cb9bc2e23648" title="Convert a simple string of base 10 digits into an unsigned 32 bit integer.">strtoul10</a>(in,out); +<a name="l00104"></a>00104 <span class="keywordflow">if</span> (unsignedValue > (<a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a>)INT_MAX) +<a name="l00105"></a>00105 { +<a name="l00106"></a>00106 <span class="keywordflow">if</span> (negative) +<a name="l00107"></a>00107 <span class="keywordflow">return</span> (<a class="code" href="namespaceirr.html#ac66849b7a6ed16e30ebede579f9b47c6" title="32 bit signed variable.">s32</a>)INT_MIN; +<a name="l00108"></a>00108 <span class="keywordflow">else</span> +<a name="l00109"></a>00109 <span class="keywordflow">return</span> (<a class="code" href="namespaceirr.html#ac66849b7a6ed16e30ebede579f9b47c6" title="32 bit signed variable.">s32</a>)INT_MAX; +<a name="l00110"></a>00110 } +<a name="l00111"></a>00111 <span class="keywordflow">else</span> +<a name="l00112"></a>00112 { +<a name="l00113"></a>00113 <span class="keywordflow">if</span> (negative) +<a name="l00114"></a>00114 <span class="keywordflow">return</span> -((<a class="code" href="namespaceirr.html#ac66849b7a6ed16e30ebede579f9b47c6" title="32 bit signed variable.">s32</a>)unsignedValue); +<a name="l00115"></a>00115 <span class="keywordflow">else</span> +<a name="l00116"></a>00116 <span class="keywordflow">return</span> (<a class="code" href="namespaceirr.html#ac66849b7a6ed16e30ebede579f9b47c6" title="32 bit signed variable.">s32</a>)unsignedValue; +<a name="l00117"></a>00117 } +<a name="l00118"></a>00118 } +<a name="l00119"></a>00119 +<a name="l00121"></a>00121 +<a name="l00126"></a><a class="code" href="namespaceirr_1_1core.html#a8b818c2189b834bffacd522ff752c3a6">00126</a> <span class="keyword">inline</span> <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> <a class="code" href="namespaceirr_1_1core.html#a8b818c2189b834bffacd522ff752c3a6" title="Convert a hex-encoded character to an unsigned integer.">ctoul16</a>(<span class="keywordtype">char</span> in) +<a name="l00127"></a>00127 { +<a name="l00128"></a>00128 <span class="keywordflow">if</span> (in >= <span class="charliteral">'0'</span> && in <= <span class="charliteral">'9'</span>) +<a name="l00129"></a>00129 <span class="keywordflow">return</span> in - <span class="charliteral">'0'</span>; +<a name="l00130"></a>00130 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (in >= <span class="charliteral">'a'</span> && in <= <span class="charliteral">'f'</span>) +<a name="l00131"></a>00131 <span class="keywordflow">return</span> 10u + in - <span class="charliteral">'a'</span>; +<a name="l00132"></a>00132 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (in >= <span class="charliteral">'A'</span> && in <= <span class="charliteral">'F'</span>) +<a name="l00133"></a>00133 <span class="keywordflow">return</span> 10u + in - <span class="charliteral">'A'</span>; +<a name="l00134"></a>00134 <span class="keywordflow">else</span> +<a name="l00135"></a>00135 <span class="keywordflow">return</span> 0xffffffff; +<a name="l00136"></a>00136 } +<a name="l00137"></a>00137 +<a name="l00139"></a>00139 +<a name="l00147"></a><a class="code" href="namespaceirr_1_1core.html#a96fa4fe7401b30c9057a0dbc7cd27c73">00147</a> <span class="keyword">inline</span> <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> <a class="code" href="namespaceirr_1_1core.html#a96fa4fe7401b30c9057a0dbc7cd27c73" title="Convert a simple string of base 16 digits into an unsigned 32 bit integer.">strtoul16</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* in, <span class="keyword">const</span> <span class="keywordtype">char</span>** out=0) +<a name="l00148"></a>00148 { +<a name="l00149"></a>00149 <span class="keywordflow">if</span> (!in) +<a name="l00150"></a>00150 { +<a name="l00151"></a>00151 <span class="keywordflow">if</span> (out) +<a name="l00152"></a>00152 *out = in; +<a name="l00153"></a>00153 <span class="keywordflow">return</span> 0; +<a name="l00154"></a>00154 } +<a name="l00155"></a>00155 +<a name="l00156"></a>00156 <span class="keywordtype">bool</span> overflow=<span class="keyword">false</span>; +<a name="l00157"></a>00157 <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> unsignedValue = 0; +<a name="l00158"></a>00158 <span class="keywordflow">while</span> (<span class="keyword">true</span>) +<a name="l00159"></a>00159 { +<a name="l00160"></a>00160 <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> tmp = 0; +<a name="l00161"></a>00161 <span class="keywordflow">if</span> ((*in >= <span class="charliteral">'0'</span>) && (*in <= <span class="charliteral">'9'</span>)) +<a name="l00162"></a>00162 tmp = (unsignedValue << 4u) + (*in - <span class="charliteral">'0'</span>); +<a name="l00163"></a>00163 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((*in >= <span class="charliteral">'A'</span>) && (*in <= <span class="charliteral">'F'</span>)) +<a name="l00164"></a>00164 tmp = (unsignedValue << 4u) + (*in - <span class="charliteral">'A'</span>) + 10; +<a name="l00165"></a>00165 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((*in >= <span class="charliteral">'a'</span>) && (*in <= <span class="charliteral">'f'</span>)) +<a name="l00166"></a>00166 tmp = (unsignedValue << 4u) + (*in - <span class="charliteral">'a'</span>) + 10; +<a name="l00167"></a>00167 <span class="keywordflow">else</span> +<a name="l00168"></a>00168 <span class="keywordflow">break</span>; +<a name="l00169"></a>00169 <span class="keywordflow">if</span> (tmp<unsignedValue) +<a name="l00170"></a>00170 { +<a name="l00171"></a>00171 unsignedValue=(<a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a>)INT_MAX; +<a name="l00172"></a>00172 overflow=<span class="keyword">true</span>; +<a name="l00173"></a>00173 } +<a name="l00174"></a>00174 <span class="keywordflow">if</span> (!overflow) +<a name="l00175"></a>00175 unsignedValue = tmp; +<a name="l00176"></a>00176 ++in; +<a name="l00177"></a>00177 } +<a name="l00178"></a>00178 +<a name="l00179"></a>00179 <span class="keywordflow">if</span> (out) +<a name="l00180"></a>00180 *out = in; +<a name="l00181"></a>00181 +<a name="l00182"></a>00182 <span class="keywordflow">return</span> unsignedValue; +<a name="l00183"></a>00183 } +<a name="l00184"></a>00184 +<a name="l00186"></a>00186 +<a name="l00194"></a><a class="code" href="namespaceirr_1_1core.html#a005590192e3f22d79759d98d42844b38">00194</a> <span class="keyword">inline</span> <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> <a class="code" href="namespaceirr_1_1core.html#a005590192e3f22d79759d98d42844b38" title="Convert a simple string of base 8 digits into an unsigned 32 bit integer.">strtoul8</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* in, <span class="keyword">const</span> <span class="keywordtype">char</span>** out=0) +<a name="l00195"></a>00195 { +<a name="l00196"></a>00196 <span class="keywordflow">if</span> (!in) +<a name="l00197"></a>00197 { +<a name="l00198"></a>00198 <span class="keywordflow">if</span> (out) +<a name="l00199"></a>00199 *out = in; +<a name="l00200"></a>00200 <span class="keywordflow">return</span> 0; +<a name="l00201"></a>00201 } +<a name="l00202"></a>00202 +<a name="l00203"></a>00203 <span class="keywordtype">bool</span> overflow=<span class="keyword">false</span>; +<a name="l00204"></a>00204 <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> unsignedValue = 0; +<a name="l00205"></a>00205 <span class="keywordflow">while</span> (<span class="keyword">true</span>) +<a name="l00206"></a>00206 { +<a name="l00207"></a>00207 <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> tmp = 0; +<a name="l00208"></a>00208 <span class="keywordflow">if</span> ((*in >= <span class="charliteral">'0'</span>) && (*in <= <span class="charliteral">'7'</span>)) +<a name="l00209"></a>00209 tmp = (unsignedValue << 3u) + (*in - <span class="charliteral">'0'</span>); +<a name="l00210"></a>00210 <span class="keywordflow">else</span> +<a name="l00211"></a>00211 <span class="keywordflow">break</span>; +<a name="l00212"></a>00212 <span class="keywordflow">if</span> (tmp<unsignedValue) +<a name="l00213"></a>00213 { +<a name="l00214"></a>00214 unsignedValue=(<a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a>)INT_MAX; +<a name="l00215"></a>00215 overflow=<span class="keyword">true</span>; +<a name="l00216"></a>00216 } +<a name="l00217"></a>00217 <span class="keywordflow">if</span> (!overflow) +<a name="l00218"></a>00218 unsignedValue = tmp; +<a name="l00219"></a>00219 ++in; +<a name="l00220"></a>00220 } +<a name="l00221"></a>00221 +<a name="l00222"></a>00222 <span class="keywordflow">if</span> (out) +<a name="l00223"></a>00223 *out = in; +<a name="l00224"></a>00224 +<a name="l00225"></a>00225 <span class="keywordflow">return</span> unsignedValue; +<a name="l00226"></a>00226 } +<a name="l00227"></a>00227 +<a name="l00229"></a>00229 +<a name="l00237"></a><a class="code" href="namespaceirr_1_1core.html#ad67ad09c33fe26fa9a15aa10ded801b7">00237</a> <span class="keyword">inline</span> <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> <a class="code" href="namespaceirr_1_1core.html#ad67ad09c33fe26fa9a15aa10ded801b7" title="Convert a C-style prefixed string (hex, oct, integer) into an unsigned 32 bit integer.">strtoul_prefix</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* in, <span class="keyword">const</span> <span class="keywordtype">char</span>** out=0) +<a name="l00238"></a>00238 { +<a name="l00239"></a>00239 <span class="keywordflow">if</span> (!in) +<a name="l00240"></a>00240 { +<a name="l00241"></a>00241 <span class="keywordflow">if</span> (out) +<a name="l00242"></a>00242 *out = in; +<a name="l00243"></a>00243 <span class="keywordflow">return</span> 0; +<a name="l00244"></a>00244 } +<a name="l00245"></a>00245 <span class="keywordflow">if</span> (<span class="charliteral">'0'</span>==in[0]) +<a name="l00246"></a>00246 <span class="keywordflow">return</span> (<span class="charliteral">'x'</span>==in[1] ? <a class="code" href="namespaceirr_1_1core.html#a96fa4fe7401b30c9057a0dbc7cd27c73" title="Convert a simple string of base 16 digits into an unsigned 32 bit integer.">strtoul16</a>(in+2,out) : <a class="code" href="namespaceirr_1_1core.html#a005590192e3f22d79759d98d42844b38" title="Convert a simple string of base 8 digits into an unsigned 32 bit integer.">strtoul8</a>(in+1,out)); +<a name="l00247"></a>00247 <span class="keywordflow">return</span> <a class="code" href="namespaceirr_1_1core.html#ae7f759b603f4caaa8471cb9bc2e23648" title="Convert a simple string of base 10 digits into an unsigned 32 bit integer.">strtoul10</a>(in,out); +<a name="l00248"></a>00248 } +<a name="l00249"></a>00249 +<a name="l00251"></a>00251 +<a name="l00259"></a><a class="code" href="namespaceirr_1_1core.html#a032ec5ae63987749c7b30c18ea4ccd92">00259</a> <span class="keyword">inline</span> <a class="code" href="namespaceirr.html#a0277be98d67dc26ff93b1a6a1d086b07" title="32 bit floating point variable.">f32</a> <a class="code" href="namespaceirr_1_1core.html#a032ec5ae63987749c7b30c18ea4ccd92" title="Converts a sequence of digits into a whole positive floating point value.">strtof10</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* in, <span class="keyword">const</span> <span class="keywordtype">char</span>** out = 0) +<a name="l00260"></a>00260 { +<a name="l00261"></a>00261 <span class="keywordflow">if</span> (!in) +<a name="l00262"></a>00262 { +<a name="l00263"></a>00263 <span class="keywordflow">if</span> (out) +<a name="l00264"></a>00264 *out = in; +<a name="l00265"></a>00265 <span class="keywordflow">return</span> 0.f; +<a name="l00266"></a>00266 } +<a name="l00267"></a>00267 +<a name="l00268"></a>00268 <span class="keyword">const</span> <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> MAX_SAFE_U32_VALUE = UINT_MAX / 10 - 10; +<a name="l00269"></a>00269 <a class="code" href="namespaceirr.html#a0416a53257075833e7002efd0a18e804" title="32 bit unsigned variable.">u32</a> intValue = 0; +<a name="l00270"></a>00270 +<a name="l00271"></a>00271 <span class="comment">// Use integer arithmetic for as long as possible, for speed</span> +<a name="l00272"></a>00272 <span class="comment">// and precision.</span> +<a name="l00273"></a>00273 <span class="keywordflow">while</span> ( ( *in >= <span class="charliteral">'0'</span>) && ( *in <= <span class="charliteral">'9'</span> ) ) +<a name="l00274"></a>00274 { +<a name="l00275"></a>00275 <span class="comment">// If it looks like we're going to overflow, bail out</span> +<a name="l00276"></a>00276 <span class="comment">// now and start using floating point.</span> +<a name="l00277"></a>00277 <span class="keywordflow">if</span> (intValue >= MAX_SAFE_U32_VALUE) +<a name="l00278"></a>00278 <span class="keywordflow">break</span>; +<a name="l00279"></a>00279 +<a name="l00280"></a>00280 intValue = (intValue * 10) + (*in - <span class="charliteral">'0'</span>); +<a name="l00281"></a>00281 ++in; +<a name="l00282"></a>00282 } +<a name="l00283"></a>00283 +<a name="l00284"></a>00284 <a class="code" href="namespaceirr.html#a0277be98d67dc26ff93b1a6a1d086b07" title="32 bit floating point variable.">f32</a> floatValue = (<a class="code" href="namespaceirr.html#a0277be98d67dc26ff93b1a6a1d086b07" title="32 bit floating point variable.">f32</a>)intValue; +<a name="l00285"></a>00285 +<a name="l00286"></a>00286 <span class="comment">// If there are any digits left to parse, then we need to use</span> +<a name="l00287"></a>00287 <span class="comment">// floating point arithmetic from here.</span> +<a name="l00288"></a>00288 <span class="keywordflow">while</span> ( ( *in >= <span class="charliteral">'0'</span>) && ( *in <= <span class="charliteral">'9'</span> ) ) +<a name="l00289"></a>00289 { +<a name="l00290"></a>00290 floatValue = (floatValue * 10.f) + (<a class="code" href="namespaceirr.html#a0277be98d67dc26ff93b1a6a1d086b07" title="32 bit floating point variable.">f32</a>)(*in - <span class="charliteral">'0'</span>); +<a name="l00291"></a>00291 ++in; +<a name="l00292"></a>00292 <span class="keywordflow">if</span> (floatValue > <a class="code" href="irr_math_8h.html#a7fbf1534f9e0f0bfdb86fb928902474c">FLT_MAX</a>) <span class="comment">// Just give up.</span> +<a name="l00293"></a>00293 <span class="keywordflow">break</span>; +<a name="l00294"></a>00294 } +<a name="l00295"></a>00295 +<a name="l00296"></a>00296 <span class="keywordflow">if</span> (out) +<a name="l00297"></a>00297 *out = in; +<a name="l00298"></a>00298 +<a name="l00299"></a>00299 <span class="keywordflow">return</span> floatValue; +<a name="l00300"></a>00300 } +<a name="l00301"></a>00301 +<a name="l00303"></a>00303 +<a name="l00310"></a><a class="code" href="namespaceirr_1_1core.html#ae5806ec05e45a700461890ec5e6f602a">00310</a> <span class="keyword">inline</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="namespaceirr_1_1core.html#ae5806ec05e45a700461890ec5e6f602a" title="Provides a fast function for converting a string into a float.">fast_atof_move</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* in, <a class="code" href="namespaceirr.html#a0277be98d67dc26ff93b1a6a1d086b07" title="32 bit floating point variable.">f32</a>& result) +<a name="l00311"></a>00311 { +<a name="l00312"></a>00312 <span class="comment">// Please run the regression test when making any modifications to this function.</span> +<a name="l00313"></a>00313 +<a name="l00314"></a>00314 result = 0.f; +<a name="l00315"></a>00315 <span class="keywordflow">if</span> (!in) +<a name="l00316"></a>00316 <span class="keywordflow">return</span> 0; +<a name="l00317"></a>00317 +<a name="l00318"></a>00318 <span class="keyword">const</span> <span class="keywordtype">bool</span> negative = (<span class="charliteral">'-'</span> == *in); +<a name="l00319"></a>00319 <span class="keywordflow">if</span> (negative || (<span class="charliteral">'+'</span>==*in)) +<a name="l00320"></a>00320 ++in; +<a name="l00321"></a>00321 +<a name="l00322"></a>00322 <a class="code" href="namespaceirr.html#a0277be98d67dc26ff93b1a6a1d086b07" title="32 bit floating point variable.">f32</a> value = <a class="code" href="namespaceirr_1_1core.html#a032ec5ae63987749c7b30c18ea4ccd92" title="Converts a sequence of digits into a whole positive floating point value.">strtof10</a>(in, &in); +<a name="l00323"></a>00323 +<a name="l00324"></a>00324 <span class="keywordflow">if</span> ( <a class="code" href="namespaceirr_1_1core.html#ac9e193c6850509dfee97f942b5f121a5" title="Selection of characters which count as decimal point in fast_atof.">LOCALE_DECIMAL_POINTS</a>.<a class="code" href="classirr_1_1core_1_1string.html#afa7db686b05dff5d10b30a900082036b" title="finds first occurrence of character in string">findFirst</a>(*in) >= 0 ) +<a name="l00325"></a>00325 { +<a name="l00326"></a>00326 <span class="keyword">const</span> <span class="keywordtype">char</span>* afterDecimal = ++in; +<a name="l00327"></a>00327 <a class="code" href="namespaceirr.html#a0277be98d67dc26ff93b1a6a1d086b07" title="32 bit floating point variable.">f32</a> decimal = <a class="code" href="namespaceirr_1_1core.html#a032ec5ae63987749c7b30c18ea4ccd92" title="Converts a sequence of digits into a whole positive floating point value.">strtof10</a>(in, &afterDecimal); +<a name="l00328"></a>00328 <span class="keywordtype">size_t</span> numDecimals = afterDecimal - in; +<a name="l00329"></a>00329 <span class="keywordflow">if</span> (numDecimals < <a class="code" href="fast__atof_8h.html#a563662fd28fd7f0663b2a1b91076afa6">IRR_ATOF_TABLE_SIZE</a>) +<a name="l00330"></a>00330 { +<a name="l00331"></a>00331 value += decimal * <a class="code" href="namespaceirr_1_1core.html#ae473ba500eefc080b4680e3445e44b02">fast_atof_table</a>[numDecimals]; +<a name="l00332"></a>00332 } +<a name="l00333"></a>00333 <span class="keywordflow">else</span> +<a name="l00334"></a>00334 { +<a name="l00335"></a>00335 value += decimal * (<a class="code" href="namespaceirr.html#a0277be98d67dc26ff93b1a6a1d086b07" title="32 bit floating point variable.">f32</a>)pow(10.f, -(<span class="keywordtype">float</span>)numDecimals); +<a name="l00336"></a>00336 } +<a name="l00337"></a>00337 in = afterDecimal; +<a name="l00338"></a>00338 } +<a name="l00339"></a>00339 +<a name="l00340"></a>00340 <span class="keywordflow">if</span> (<span class="charliteral">'e'</span> == *in || <span class="charliteral">'E'</span> == *in) +<a name="l00341"></a>00341 { +<a name="l00342"></a>00342 ++in; +<a name="l00343"></a>00343 <span class="comment">// Assume that the exponent is a whole number.</span> +<a name="l00344"></a>00344 <span class="comment">// strtol10() will deal with both + and - signs,</span> +<a name="l00345"></a>00345 <span class="comment">// but calculate as f32 to prevent overflow at FLT_MAX</span> +<a name="l00346"></a>00346 <span class="comment">// Using pow with float cast instead of powf as otherwise accuracy decreases.</span> +<a name="l00347"></a>00347 value *= (<a class="code" href="namespaceirr.html#a0277be98d67dc26ff93b1a6a1d086b07" title="32 bit floating point variable.">f32</a>)pow(10.f, (<a class="code" href="namespaceirr.html#a0277be98d67dc26ff93b1a6a1d086b07" title="32 bit floating point variable.">f32</a>)<a class="code" href="namespaceirr_1_1core.html#a6ff97e442233218d18acd56add48766f" title="Convert a simple string of base 10 digits into a signed 32 bit integer.">strtol10</a>(in, &in)); +<a name="l00348"></a>00348 } +<a name="l00349"></a>00349 +<a name="l00350"></a>00350 result = negative?-value:value; +<a name="l00351"></a>00351 <span class="keywordflow">return</span> in; +<a name="l00352"></a>00352 } +<a name="l00353"></a>00353 +<a name="l00355"></a>00355 +<a name="l00360"></a><a class="code" href="namespaceirr_1_1core.html#af69b7d3604a1089438106fcce3cedb34">00360</a> <span class="keyword">inline</span> <span class="keywordtype">float</span> <a class="code" href="namespaceirr_1_1core.html#af69b7d3604a1089438106fcce3cedb34" title="Convert a string to a floating point number.">fast_atof</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* floatAsString, <span class="keyword">const</span> <span class="keywordtype">char</span>** out=0) +<a name="l00361"></a>00361 { +<a name="l00362"></a>00362 <span class="keywordtype">float</span> ret; +<a name="l00363"></a>00363 <span class="keywordflow">if</span> (out) +<a name="l00364"></a>00364 *out=<a class="code" href="namespaceirr_1_1core.html#ae5806ec05e45a700461890ec5e6f602a" title="Provides a fast function for converting a string into a float.">fast_atof_move</a>(floatAsString, ret); +<a name="l00365"></a>00365 <span class="keywordflow">else</span> +<a name="l00366"></a>00366 <a class="code" href="namespaceirr_1_1core.html#ae5806ec05e45a700461890ec5e6f602a" title="Provides a fast function for converting a string into a float.">fast_atof_move</a>(floatAsString, ret); +<a name="l00367"></a>00367 <span class="keywordflow">return</span> ret; +<a name="l00368"></a>00368 } +<a name="l00369"></a>00369 +<a name="l00370"></a>00370 } <span class="comment">// end namespace core</span> +<a name="l00371"></a>00371 } <span class="comment">// end namespace irr</span> +<a name="l00372"></a>00372 +<a name="l00373"></a>00373 <span class="preprocessor">#endif</span> +<a name="l00374"></a>00374 <span class="preprocessor"></span> +</pre></div></div> +</div> + <div id="nav-path" class="navpath"> + <ul> + <li class="navelem"><a class="el" href="fast__atof_8h.html">fast_atof.h</a> </li> +<!-- window showing the filter options --> +<div id="MSearchSelectWindow" + onmouseover="return searchBox.OnSearchSelectShow()" + onmouseout="return searchBox.OnSearchSelectHide()" + onkeydown="return searchBox.OnSearchSelectKey(event)"> +<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark"> </span>Friends</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark"> </span>Defines</a></div> + +<!-- iframe showing the search results (closed by default) --> +<div id="MSearchResultsWindow"> +<iframe src="javascript:void(0)" frameborder="0" + name="MSearchResults" id="MSearchResults"> +</iframe> +</div> + + + <li class="footer"> +<a href="http://irrlicht.sourceforge.net" target="_blank">Irrlicht +Engine</a> Documentation © 2003-2012 by Nikolaus Gebhardt. Generated on Fri Mar 12 2021 17:21:44 for Irrlicht 3D Engine by +<a href="http://www.doxygen.org/index.html" target="_blank">Doxygen</a> 1.7.5.1 </li> + </ul> + </div> + + +</body> +</html> |