236 lines
7.6 KiB
HTML
236 lines
7.6 KiB
HTML
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<meta http-equiv="content-type" content="text/html; charset=utf-8" />
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<title>>> (right shift) | reference | Processing.js</title>
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<a href="http://processingjs.org/"><img src="../../images/header.png" width="177" height="42"></a>
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</div>
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<span class="tagline">a port of the Processing Visualization Language</span>
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<canvas width="940px" height="78px" data-processing-sources="/sketches/bannerSketch.pde"></canvas>
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<div class="span11">
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<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
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<tr class="name-row">
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<th scope="row">Name</th>
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<td><h3>>> (right shift)</h3></td>
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</tr>
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<tr class="">
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<th scope="row">Examples</th>
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<td><div class="example"><pre>int m = 8 >> 3; // In binary: 1000 to 1
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println(m); // Prints "1"
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int n = 256 >> 6; // In binary: 100000000 to 100
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println(n); // Prints "4"
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int o = 16 >> 3; // In binary: 10000 to 10
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println(o); // Prints "2"
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int p = 26 >> 1; // In binary: 11010 to 1101
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println(p); // Prints "13"</pre></div><hr class="noShade" noshade="noshade" size="1" /><div class="example"><pre>color argb = color(204, 204, 51, 255);
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int a = argb >> 24 & 0xFF;
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int r = argb >> 16 & 0xFF; // Faster way of getting red(argb)
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int g = argb >> 8 & 0xFF; // Faster way of getting green(argb)
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int b = argb & 0xFF; // Faster way of getting blue(argb)
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fill(r, g, b, a);
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rect(30, 20, 55, 55);</pre></div></td>
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</tr>
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<tr class="">
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<th scope="row">Description</th>
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<td>Shifts bits to the right. The number to the left of the operator is shifted the number of places specified by the number to the right. Each shift to the right halves the number, therefore each left shift divides the original number by 2. Use the right shift for fast divisions or to extract an individual number from a packed number. Right shifting only works with integers or numbers which automatically convert to an integer such at byte and char.</td>
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</tr>
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<tr class="">
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<th scope="row">Syntax</th>
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<td><pre><kbd>value</kbd> >> <kbd>n</kbd></pre></td>
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</tr>
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<tr class="">
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<th scope="row">Parameters</th>
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<td><table cellpadding="0" cellspacing="0" border="0">
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<tr class="">
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<th scope="row">value</th>
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<td>int: the value to shift</td>
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</tr>
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<tr class="">
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<th scope="row">n</th>
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<td>int: the number of places to shift right</td>
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</tr>
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</table></td>
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</tr>
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<tr class="">
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<th scope="row">Usage</th>
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<td>Web & Application</td>
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</tr>
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<tr class="">
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<th scope="row">Related</th>
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<td><a href="http://processingjs.org/reference/left shift"><< (left shift)</a><br /></td>
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</tr>
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</table>
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<div class="cclicense">
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<p>This reference is licensed under the CC BY-NC-SA 2.0 license:</p>
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<a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/2.0/">
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<img alt="Creative Commons License" border="0" src="../../images/somerights20.gif" />
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</a>
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<div class="sidebar span4">
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<h3><a href="http://processingjs.org/download/">Downloads</a></h3>
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<ul>
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<li><a href="http://processingjs.org/download/">Download the latest version of Processing.js!</a></li>
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<h3><a href="http://processingjs.org/articles/">Articles</a></h3>
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<ul>
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<li><a href="http://processingjs.org/articles/jsQuickStart.html">Quick Start - JavaScript Developer</a></li>
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<li><a href="http://processingjs.org/articles/p5QuickStart.html">Quick Start - Processing Developer</a></li>
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<li><a href="http://processingjs.org/articles/RenderingModes.html">Rendering Modes</a></li>
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<li><a href="http://processingjs.org/articles/PomaxGuide.html">Pomax's Guide to processing-js</a></li>
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</ul>
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<h3><a>Web IDEs</a></h3>
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<ul>
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<li><a href="http://sketchpad.cc">Sketchpad.cc</a></li>
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<li><a href="http://processingjs.org/tools/processing-helper.html">Processing.js Helper</a></li>
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<li><a href="http://www.openprocessing.org">OpenProcessing.org</a></li>
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</ul>
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<h3><a href="http://processingjs.org/community/">Community</a></h3>
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<ul>
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<li><a href="http://zenit.senecac.on.ca/wiki/index.php/">Open Source @ Seneca</a></li>
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</div>
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<div class="footer">
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Processing is an open visualization language developed by
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<a href="http://benfry.com/">Ben Fry</a> & <a href="http://reas.com/">Casey Reas</a>,
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and originally ported to Javascript by
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<a href="http://ejohn.org/blog/processingjs/">John Resig</a>.
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Processing.js is maintained by the Processing.js team.
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<a href="http://github.com/processing-js/processing-js/">
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