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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Use a better RNG for Math.random()"
   href="https://bugs.webkit.org/show_bug.cgi?id=151641">151641</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Use a better RNG for Math.random()
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>JavaScriptCore
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>jdemooij&#64;mozilla.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>barraclough&#64;apple.com, ggaren&#64;apple.com, oliver&#64;apple.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The GameRand-based RNG Safari/JSC uses is very weak. Furthermore, it only uses 32 bits of precision. I blogged about this here:

<a href="http://jandemooij.nl/blog/2015/11/27/math-random-and-32-bit-precision/">http://jandemooij.nl/blog/2015/11/27/math-random-and-32-bit-precision/</a>

V8 moved to a better RNG and we're switching the one in SpiderMonkey as well. JSC should probably do the same.</pre>
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      </p>
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