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<h1>PseudoRandomSource Class Reference</h1><!-- doxytag: class="PseudoRandomSource" -->this class serves as a source of reproducible (pseudo-)random numbers
<a href="#_details">More...</a>
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<code>#include <<a class="el" href="PseudoRandomSource_8h_source.html">PseudoRandomSource.h</a>></code>
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<a href="classPseudoRandomSource-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
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<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classPseudoRandomSource.html#99178fce83f11ef778d93c125d8b0638">PseudoRandomSource</a> (<a class="el" href="common_8h.html#6b8592979b076e06aa233e3f586ac999">UWORD32</a> s)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="common_8h.html#6b8592979b076e06aa233e3f586ac999">UWORD32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classPseudoRandomSource.html#8ef2aa9bb5419cbaf1d7a28f958115f9">getValue</a> (<a class="el" href="common_8h.html#6b8592979b076e06aa233e3f586ac999">UWORD32</a> n)</td></tr>
<tr><td colspan="2"><br><h2>Private Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="common_8h.html#6b8592979b076e06aa233e3f586ac999">UWORD32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classPseudoRandomSource.html#7b82ea9bcac4633974b9d10f260d3f4e">Value</a></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">static const <a class="el" href="common_8h.html#6b8592979b076e06aa233e3f586ac999">UWORD32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classPseudoRandomSource.html#5b780fa93c41e7057e00e44faaaa2dca">A</a> = 1367208549</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static const <a class="el" href="common_8h.html#6b8592979b076e06aa233e3f586ac999">UWORD32</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classPseudoRandomSource.html#4a35b7e561bfcf7c8031ce0e985a992e">C</a> = 1</td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
To generate the random numbers, the linear congruetial method is used. 2^32 is used as modulus. The overflow in the implementation is intended (and controlled, as UWORD32 is used as datatype which always is 32 bits wide). <hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="99178fce83f11ef778d93c125d8b0638"></a><!-- doxytag: member="PseudoRandomSource::PseudoRandomSource" ref="99178fce83f11ef778d93c125d8b0638" args="(UWORD32 s)" -->
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<td class="memname">PseudoRandomSource::PseudoRandomSource </td>
<td>(</td>
<td class="paramtype"><a class="el" href="common_8h.html#6b8592979b076e06aa233e3f586ac999">UWORD32</a> </td>
<td class="paramname"> <em>s</em> </td>
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<td><code> [inline]</code></td>
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construct a <a class="el" href="classPseudoRandomSource.html" title="this class serves as a source of reproducible (pseudo-)random numbers">PseudoRandomSource</a> object <dl compact><dt><b>Parameters:</b></dt><dd>
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<tr><td valign="top"></td><td valign="top"><em>s</em> </td><td>the seed </td></tr>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="8ef2aa9bb5419cbaf1d7a28f958115f9"></a><!-- doxytag: member="PseudoRandomSource::getValue" ref="8ef2aa9bb5419cbaf1d7a28f958115f9" args="(UWORD32 n)" -->
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<td class="memname"><a class="el" href="common_8h.html#6b8592979b076e06aa233e3f586ac999">UWORD32</a> PseudoRandomSource::getValue </td>
<td>(</td>
<td class="paramtype"><a class="el" href="common_8h.html#6b8592979b076e06aa233e3f586ac999">UWORD32</a> </td>
<td class="paramname"> <em>n</em> </td>
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get a pseudo-random value from {0,...,n-1} <dl compact><dt><b>Parameters:</b></dt><dd>
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<tr><td valign="top"></td><td valign="top"><em>n</em> </td><td>the range of the random value to be returned </td></tr>
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<dl class="return" compact><dt><b>Returns:</b></dt><dd>a number >= 0 and <= n - 1</dd></dl>
After calling getValue, the next getValue call will use the next state of the random number generator (analogous to the C rand() function)
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<hr><h2>Member Data Documentation</h2>
<a class="anchor" name="5b780fa93c41e7057e00e44faaaa2dca"></a><!-- doxytag: member="PseudoRandomSource::A" ref="5b780fa93c41e7057e00e44faaaa2dca" args="" -->
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<td class="memname">const <a class="el" href="common_8h.html#6b8592979b076e06aa233e3f586ac999">UWORD32</a> <a class="el" href="classPseudoRandomSource.html#5b780fa93c41e7057e00e44faaaa2dca">PseudoRandomSource::A</a> = 1367208549<code> [static, private]</code> </td>
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<a class="anchor" name="4a35b7e561bfcf7c8031ce0e985a992e"></a><!-- doxytag: member="PseudoRandomSource::C" ref="4a35b7e561bfcf7c8031ce0e985a992e" args="" -->
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<td class="memname">const <a class="el" href="common_8h.html#6b8592979b076e06aa233e3f586ac999">UWORD32</a> <a class="el" href="classPseudoRandomSource.html#4a35b7e561bfcf7c8031ce0e985a992e">PseudoRandomSource::C</a> = 1<code> [static, private]</code> </td>
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<a class="anchor" name="7b82ea9bcac4633974b9d10f260d3f4e"></a><!-- doxytag: member="PseudoRandomSource::Value" ref="7b82ea9bcac4633974b9d10f260d3f4e" args="" -->
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<td class="memname"><a class="el" href="common_8h.html#6b8592979b076e06aa233e3f586ac999">UWORD32</a> <a class="el" href="classPseudoRandomSource.html#7b82ea9bcac4633974b9d10f260d3f4e">PseudoRandomSource::Value</a><code> [private]</code> </td>
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<hr>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="PseudoRandomSource_8h_source.html">PseudoRandomSource.h</a><li><a class="el" href="PseudoRandomSource_8cc.html">PseudoRandomSource.cc</a></ul>
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<hr size="1"><address style="text-align: right;"><small>Generated on Mon Aug 17 10:58:32 2009 for steghide by
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