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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_0bc14b2fb119a11b6a0f32f4d350db61.html">geos</a></li><li class="navelem"><a class="el" href="dir_0aaf6d686f05540f7376cb30062cd3e1.html">math</a></li> </ul>
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<a href="DD_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/**********************************************************************</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> * GEOS - Geometry Engine Open Source</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * http://geos.osgeo.org</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * Copyright (C) 2020 Crunchy Data</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * This is free software; you can redistribute and/or modify it under</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * the terms of the GNU Lesser General Public Licence as published</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * by the Free Software Foundation.</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * See the COPYING file for more information.</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> **********************************************************************/</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="preprocessor">#ifndef GEOS_MATH_DD_H</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;<span class="preprocessor">#define GEOS_MATH_DD_H</span></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="preprocessor">#include &lt;cmath&gt;</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacegeos.html">geos</a> {</div><div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="namespacegeos_1_1math.html"> 99</a></span>&#160;<span class="keyword">namespace </span>math { <span class="comment">// geos.math</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;</div><div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="classgeos_1_1math_1_1DD.html"> 108</a></span>&#160;<span class="keyword">class </span><a class="code" href="export_8h.html#ae36df939090171f6e9a28a8cb6254fea">GEOS_DLL</a> <a class="code" href="classgeos_1_1math_1_1DD.html">DD</a> {</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keyword">private</span>:</div><div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="classgeos_1_1math_1_1DD.html#a29f4e3f25af1b65eeb815ac18fa1053e"> 110</a></span>&#160; <span class="keyword">static</span> constexpr <span class="keywordtype">double</span> SPLIT = 134217729.0; <span class="comment">// 2^27+1, for IEEE double</span></div><div class="line"><a name="l00111"></a><span class="lineno"><a class="line" href="classgeos_1_1math_1_1DD.html#aaa59bf60d2fde07a68d9de0b
<div class="ttc" id="classgeos_1_1math_1_1DD_html_aaeb65cbdce4ce8253b75a1f27c4046f8"><div class="ttname"><a href="classgeos_1_1math_1_1DD.html#aaeb65cbdce4ce8253b75a1f27c4046f8">geos::math::DD::ToDouble</a></div><div class="ttdeci">double ToDouble() const </div><div class="ttdef"><b>Definition:</b> <a href="DD_8h_source.html#l00173">DD.h:173</a></div></div>
<div class="ttc" id="classgeos_1_1math_1_1DD_html_aaa59bf60d2fde07a68d9de0ba9726fa6"><div class="ttname"><a href="classgeos_1_1math_1_1DD.html#aaa59bf60d2fde07a68d9de0ba9726fa6">geos::math::DD::hi</a></div><div class="ttdeci">double hi</div><div class="ttdef"><b>Definition:</b> <a href="DD_8h_source.html#l00111">DD.h:111</a></div></div>
<div class="ttc" id="export_8h_html_ae36df939090171f6e9a28a8cb6254fea"><div class="ttname"><a href="export_8h.html#ae36df939090171f6e9a28a8cb6254fea">GEOS_DLL</a></div><div class="ttdeci">#define GEOS_DLL</div><div class="ttdef"><b>Definition:</b> <a href="export_8h_source.html#l00028">export.h:28</a></div></div>
<div class="ttc" id="classgeos_1_1math_1_1DD_html"><div class="ttname"><a href="classgeos_1_1math_1_1DD.html">geos::math::DD</a></div><div class="ttdoc">Wrapper for DoubleDouble higher precision mathematics operations. </div><div class="ttdef"><b>Definition:</b> <a href="DD_8h_source.html#l00108">DD.h:108</a></div></div>
<div class="ttc" id="classgeos_1_1math_1_1DD_html_a58fc925ca5d5c99a0eeff828ad2bc36b"><div class="ttname"><a href="classgeos_1_1math_1_1DD.html#a58fc925ca5d5c99a0eeff828ad2bc36b">geos::math::DD::operator&gt;</a></div><div class="ttdeci">bool operator&gt;(const DD &amp;rhs) const </div><div class="ttdef"><b>Definition:</b> <a href="DD_8h_source.html#l00143">DD.h:143</a></div></div>
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<div class="ttc" id="classgeos_1_1math_1_1DD_html_abfaa5a874a136fe4e9559727011f42a2"><div class="ttname"><a href="classgeos_1_1math_1_1DD.html#abfaa5a874a136fe4e9559727011f42a2">geos::math::DD::lo</a></div><div class="ttdeci">double lo</div><div class="ttdef"><b>Definition:</b> <a href="DD_8h_source.html#l00112">DD.h:112</a></div></div>
<div class="ttc" id="classgeos_1_1math_1_1DD_html_ab8cb1204f17678c39147d187093ff51b"><div class="ttname"><a href="classgeos_1_1math_1_1DD.html#ab8cb1204f17678c39147d187093ff51b">geos::math::DD::operator==</a></div><div class="ttdeci">bool operator==(const DD &amp;rhs) const </div><div class="ttdef"><b>Definition:</b> <a href="DD_8h_source.html#l00123">DD.h:123</a></div></div>
<div class="ttc" id="classgeos_1_1math_1_1DD_html_a3533eeabcfcf0865f4a565fb35a8646f"><div class="ttname"><a href="classgeos_1_1math_1_1DD.html#a3533eeabcfcf0865f4a565fb35a8646f">geos::math::DD::operator!=</a></div><div class="ttdeci">bool operator!=(const DD &amp;rhs) const </div><div class="ttdef"><b>Definition:</b> <a href="DD_8h_source.html#l00128">DD.h:128</a></div></div>
<div class="ttc" id="namespacegeos_html"><div class="ttname"><a href="namespacegeos.html">geos</a></div><div class="ttdoc">Basic namespace for all GEOS functionalities. </div><div class="ttdef"><b>Definition:</b> <a href="IndexedNestedRingTester_8h_source.html#l00026">IndexedNestedRingTester.h:26</a></div></div>
<div class="ttc" id="classgeos_1_1math_1_1DD_html_a9eacf68ff929f10bfe2be37b43af3881"><div class="ttname"><a href="classgeos_1_1math_1_1DD.html#a9eacf68ff929f10bfe2be37b43af3881">geos::math::DD::operator&lt;=</a></div><div class="ttdeci">bool operator&lt;=(const DD &amp;rhs) const </div><div class="ttdef"><b>Definition:</b> <a href="DD_8h_source.html#l00138">DD.h:138</a></div></div>
<div class="ttc" id="classgeos_1_1math_1_1DD_html_af3bd55d23bf51d9c3fc630e0390e7d36"><div class="ttname"><a href="classgeos_1_1math_1_1DD.html#af3bd55d23bf51d9c3fc630e0390e7d36">geos::math::DD::operator&lt;</a></div><div class="ttdeci">bool operator&lt;(const DD &amp;rhs) const </div><div class="ttdef"><b>Definition:</b> <a href="DD_8h_source.html#l00133">DD.h:133</a></div></div>
<div class="ttc" id="classgeos_1_1math_1_1DD_html_a3a82f98375e163367f0b046f8358f17d"><div class="ttname"><a href="classgeos_1_1math_1_1DD.html#a3a82f98375e163367f0b046f8358f17d">geos::math::DD::DD</a></div><div class="ttdeci">DD(double p_hi, double p_lo)</div><div class="ttdef"><b>Definition:</b> <a href="DD_8h_source.html#l00119">DD.h:119</a></div></div>
<div class="ttc" id="classgeos_1_1math_1_1DD_html_afd785798e59d70b09b18c1f40d0b2d7c"><div class="ttname"><a href="classgeos_1_1math_1_1DD.html#afd785798e59d70b09b18c1f40d0b2d7c">geos::math::DD::DD</a></div><div class="ttdeci">DD(double x)</div><div class="ttdef"><b>Definition:</b> <a href="DD_8h_source.html#l00120">DD.h:120</a></div></div>
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