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<!doctype html> <html> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Rand48 — Imath Documentation</title> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <link rel="stylesheet" href="../_static/bizstyle.css" type="text/css" /> <script id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script> <script src="../_static/jquery.js"></script> <script src="../_static/underscore.js"></script> <script src="../_static/doctools.js"></script> <script async="async" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.7/latest.js?config=TeX-AMS-MML_HTMLorMML"></script> <script src="../_static/bizstyle.js"></script> <link rel="index" title="Index" href="../genindex.html" /> <link rel="search" title="Search" href="../search.html" /> <link rel="next" title="Shear6" href="Shear6.html" /> <link rel="prev" title="Rand32" href="Rand32.html" /> <meta name="viewport" content="width=device-width,initial-scale=1.0" /> <!--[if lt IE 9]> <script src="_static/css3-mediaqueries.js"></script> <![endif]--> </head><body> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="Shear6.html" title="Shear6" accesskey="N">next</a> |</li> <li class="right" > <a href="Rand32.html" title="Rand32" accesskey="P">previous</a> |</li> <li class="nav-item nav-item-0"><a href="../index.html">Imath</a> »</li> <li class="nav-item nav-item-this"><a href="">Rand48</a></li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <div class="section" id="rand48"> <h1>Rand48<a class="headerlink" href="#rand48" title="Permalink to this headline">¶</a></h1> <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="c1">#include <Imath/ImathRandom.h></span> </pre></div> </div> <p>The <code class="docutils literal notranslate"><span class="pre">Rand48</span></code> class is a fast pseudo-random number generator based on the C Standard Library functions erand48(), nrand48() & company. It generates a uniformly distributed sequence.</p> <dl class="cpp class"> <dt id="_CPPv4N5Imath6Rand48E"> <span id="_CPPv3N5Imath6Rand48E"></span><span id="_CPPv2N5Imath6Rand48E"></span><span id="Imath::Rand48"></span><span class="target" id="class_imath_1_1_rand48"></span><em class="property">class </em><code class="sig-prename descclassname">Imath<code class="sig-prename descclassname">::</code></code><code class="sig-name descname">Rand48</code><a class="headerlink" href="#_CPPv4N5Imath6Rand48E" title="Permalink to this definition">¶</a><br /></dt> <dd><p>Random-number generator based on the C Standard Library functions erand48(), nrand48() & company; generates a uniformly distributed sequence. </p> <div class="breathe-sectiondef docutils container"> <p class="breathe-sectiondef-title rubric">Public Functions</p> <dl class="cpp function"> <dt id="_CPPv4N5Imath6Rand486Rand48Em"> <span id="_CPPv3N5Imath6Rand486Rand48Em"></span><span id="_CPPv2N5Imath6Rand486Rand48Em"></span><span id="Imath::Rand48::Rand48__unsigned-l-i"></span><span class="target" id="class_imath_1_1_rand48_1a948f0e8ca75f5809fc66a50cd931fe1e"></span><em class="property">inline</em> <code class="sig-name descname">Rand48</code><span class="sig-paren">(</span>unsigned long int <em>seed</em> = 0<span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4N5Imath6Rand486Rand48Em" title="Permalink to this definition">¶</a><br /></dt> <dd><p>Constructor. </p> </dd></dl> <dl class="cpp function"> <dt id="_CPPv4N5Imath6Rand484initEm"> <span id="_CPPv3N5Imath6Rand484initEm"></span><span id="_CPPv2N5Imath6Rand484initEm"></span><span id="Imath::Rand48::init__unsigned-l-i"></span><span class="target" id="class_imath_1_1_rand48_1a177478705579049afd6ed4e1aa27463b"></span><em class="property">inline</em> void <code class="sig-name descname">init</code><span class="sig-paren">(</span>unsigned long int <em>seed</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4N5Imath6Rand484initEm" title="Permalink to this definition">¶</a><br /></dt> <dd><p>Re-initialize with a given seed. </p> </dd></dl> <dl class="cpp function"> <dt id="_CPPv4N5Imath6Rand485nextbEv"> <span id="_CPPv3N5Imath6Rand485nextbEv"></span><span id="_CPPv2N5Imath6Rand485nextbEv"></span><span id="Imath::Rand48::nextb"></span><span class="target" id="class_imath_1_1_rand48_1a9268bc226cf75302d6f08222821cf0b5"></span><em class="property">inline</em> bool <code class="sig-name descname">nextb</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4N5Imath6Rand485nextbEv" title="Permalink to this definition">¶</a><br /></dt> <dd><p>Get the next value in the sequence (range: [false, true]) </p> </dd></dl> <dl class="cpp function"> <dt id="_CPPv4N5Imath6Rand485nextiEv"> <span id="_CPPv3N5Imath6Rand485nextiEv"></span><span id="_CPPv2N5Imath6Rand485nextiEv"></span><span id="Imath::Rand48::nexti"></span><span class="target" id="class_imath_1_1_rand48_1adeb65e80b163d072201d1f3be80c0d6b"></span><em class="property">inline</em> long int <code class="sig-name descname">nexti</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4N5Imath6Rand485nextiEv" title="Permalink to this definition">¶</a><br /></dt> <dd><p>Get the next value in the sequence (range: [0 … 0x7fffffff]) </p> </dd></dl> <dl class="cpp function"> <dt id="_CPPv4N5Imath6Rand485nextfEv"> <span id="_CPPv3N5Imath6Rand485nextfEv"></span><span id="_CPPv2N5Imath6Rand485nextfEv"></span><span id="Imath::Rand48::nextf"></span><span class="target" id="class_imath_1_1_rand48_1a02a13847cb278967a451dd5d6bd69d9d"></span><em class="property">inline</em> double <code class="sig-name descname">nextf</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4N5Imath6Rand485nextfEv" title="Permalink to this definition">¶</a><br /></dt> <dd><p>Get the next value in the sequence (range: [0 … 1[) </p> </dd></dl> <dl class="cpp function"> <dt id="_CPPv4N5Imath6Rand485nextfEdd"> <span id="_CPPv3N5Imath6Rand485nextfEdd"></span><span id="_CPPv2N5Imath6Rand485nextfEdd"></span><span id="Imath::Rand48::nextf__double.double"></span><span class="target" id="class_imath_1_1_rand48_1a98129642cf931360f3819ed30131ad79"></span><em class="property">inline</em> double <code class="sig-name descname">nextf</code><span class="sig-paren">(</span>double <em>rangeMin</em>, double <em>rangeMax</em><span class="sig-paren">)</span><a class="headerlink" href="#_CPPv4N5Imath6Rand485nextfEdd" title="Permalink to this definition">¶</a><br /></dt> <dd><p>Get the next value in the sequence (range [rangeMin … rangeMax[) </p> </dd></dl> </div> </dd></dl> </div> <div class="clearer"></div> </div> </div> </div> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <p class="logo"><a href="../index.html"> <img class="logo" 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