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<div class="subTitle">com.jogamp.common.util</div>
<h2 title="Interface Bitfield" class="title">Interface Bitfield</h2>
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<pre>public interface <span class="typeNameLabel">Bitfield</span></pre>
<div class="block">Simple bitfield interface for efficient bit storage access in O(1).</div>
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<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.3.2</dd>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<tr class="altColor">
<td class="colFirst"><code>static class </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.Factory.html" title="class in com.jogamp.common.util">Bitfield.Factory</a></span></code>
<div class="block">Simple <a href="../../../../com/jogamp/common/util/Bitfield.html" title="interface in com.jogamp.common.util"><code>Bitfield</code></a> factory for returning the efficient implementation.</div>
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<td class="colFirst"><code>static class </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.Util.html" title="class in com.jogamp.common.util">Bitfield.Util</a></span></code>
<div class="block">Bit operation utilities (static).</div>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.html#UNSIGNED_INT_MAX_VALUE">UNSIGNED_INT_MAX_VALUE</a></span></code>
<div class="block">Maximum 32 bit Unsigned Integer Value: <code>0xffffffff</code> == -1.</div>
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.html#bitCount--">bitCount</a></span>()</code>
<div class="block">Returns the number of one bits within this bitfield.</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.html#clear-int-">clear</a></span>(int bitnum)</code>
<div class="block">Clear the bit at position <code>bitnum</code> according to <code>bit</code>.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.html#clearField-boolean-">clearField</a></span>(boolean bit)</code>
<div class="block">Set all bits of this bitfield to the given value <code>bit</code>.</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.html#copy-int-int-">copy</a></span>(int srcBitnum,
int dstBitnum)</code>
<div class="block">Copies the bit at position <code>srcBitnum</code> to position <code>dstBitnum</code>
and returning <code>true</code> if the bit is set, otherwise <code>false</code>.</div>
</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.html#copy32-int-int-int-">copy32</a></span>(int srcLowBitnum,
int dstLowBitnum,
int length)</code>
<div class="block">Copies <code>length</code> bits at position <code>srcLowBitnum</code> to position <code>dstLowBitnum</code>
and returning the bits.</div>
</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.html#get-int-">get</a></span>(int bitnum)</code>
<div class="block">Return <code>true</code> if the bit at position <code>bitnum</code> is set, otherwise <code>false</code>.</div>
</td>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.html#get32-int-int-">get32</a></span>(int lowBitnum,
int length)</code>
<div class="block">Returns <code>length</code> bits from this storage,
starting with the lowest bit from the storage position <code>lowBitnum</code>.</div>
</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.html#put-int-boolean-">put</a></span>(int bitnum,
boolean bit)</code>
<div class="block">Set or clear the bit at position <code>bitnum</code> according to <code>bit</code>
and return the previous value.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.html#put32-int-int-int-">put32</a></span>(int lowBitnum,
int length,
int data)</code>
<div class="block">Puts <code>length</code> bits of given <code>data</code> into this storage,
starting w/ the lowest bit to the storage position <code>lowBitnum</code>.</div>
</td>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.html#set-int-">set</a></span>(int bitnum)</code>
<div class="block">Set the bit at position <code>bitnum</code> according to <code>bit</code>.</div>
</td>
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<tr id="i10" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/jogamp/common/util/Bitfield.html#size--">size</a></span>()</code>
<div class="block">Returns the storage size in bit units, e.g.</div>
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<h4>UNSIGNED_INT_MAX_VALUE</h4>
<pre>static final int UNSIGNED_INT_MAX_VALUE</pre>
<div class="block">Maximum 32 bit Unsigned Integer Value: <code>0xffffffff</code> == -1.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../constant-values.html#com.jogamp.common.util.Bitfield.UNSIGNED_INT_MAX_VALUE">Constant Field Values</a></dd>
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<h4>size</h4>
<pre>int size()</pre>
<div class="block">Returns the storage size in bit units, e.g. 32 bit for implementations using one <code>int</code> field.</div>
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<h4>clearField</h4>
<pre>void clearField(boolean bit)</pre>
<div class="block">Set all bits of this bitfield to the given value <code>bit</code>.</div>
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<h4>get32</h4>
<pre>int get32(int lowBitnum,
int length)
throws <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></pre>
<div class="block">Returns <code>length</code> bits from this storage,
starting with the lowest bit from the storage position <code>lowBitnum</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>lowBitnum</code> - storage bit position of the lowest bit, restricted to [0..<a href="../../../../com/jogamp/common/util/Bitfield.html#size--"><code>size()</code></a>-<code>length</code>].</dd>
<dd><code>length</code> - number of bits to read, constrained to [0..32].</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></code> - if <code>rightBitnum</code> is out of bounds</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../com/jogamp/common/util/Bitfield.html#put32-int-int-int-"><code>put32(int, int, int)</code></a></dd>
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<h4>put32</h4>
<pre>void put32(int lowBitnum,
int length,
int data)
throws <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></pre>
<div class="block">Puts <code>length</code> bits of given <code>data</code> into this storage,
starting w/ the lowest bit to the storage position <code>lowBitnum</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>lowBitnum</code> - storage bit position of the lowest bit, restricted to [0..<a href="../../../../com/jogamp/common/util/Bitfield.html#size--"><code>size()</code></a>-<code>length</code>].</dd>
<dd><code>length</code> - number of bits to write, constrained to [0..32].</dd>
<dd><code>data</code> - the actual bits to be put into this storage</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></code> - if <code>rightBitnum</code> is out of bounds</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../com/jogamp/common/util/Bitfield.html#get32-int-int-"><code>get32(int, int)</code></a></dd>
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<h4>copy32</h4>
<pre>int copy32(int srcLowBitnum,
int dstLowBitnum,
int length)
throws <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></pre>
<div class="block">Copies <code>length</code> bits at position <code>srcLowBitnum</code> to position <code>dstLowBitnum</code>
and returning the bits.
<p>
Implementation shall operate as if invoking <a href="../../../../com/jogamp/common/util/Bitfield.html#get32-int-int-"><code>get32(int, int)</code></a>
and then <a href="../../../../com/jogamp/common/util/Bitfield.html#put32-int-int-int-"><code>put32(int, int, int)</code></a> sequentially.
</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>srcLowBitnum</code> - source bit number, restricted to [0..<a href="../../../../com/jogamp/common/util/Bitfield.html#size--"><code>size()</code></a>-1].</dd>
<dd><code>dstLowBitnum</code> - destination bit number, restricted to [0..<a href="../../../../com/jogamp/common/util/Bitfield.html#size--"><code>size()</code></a>-1].</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></code> - if <code>bitnum</code> is out of bounds</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../com/jogamp/common/util/Bitfield.html#get32-int-int-"><code>get32(int, int)</code></a>,
<a href="../../../../com/jogamp/common/util/Bitfield.html#put32-int-int-int-"><code>put32(int, int, int)</code></a></dd>
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<h4>get</h4>
<pre>boolean get(int bitnum)
throws <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></pre>
<div class="block">Return <code>true</code> if the bit at position <code>bitnum</code> is set, otherwise <code>false</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bitnum</code> - bit number, restricted to [0..<a href="../../../../com/jogamp/common/util/Bitfield.html#size--"><code>size()</code></a>-1].</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></code> - if <code>bitnum</code> is out of bounds</dd>
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<h4>put</h4>
<pre>boolean put(int bitnum,
boolean bit)
throws <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></pre>
<div class="block">Set or clear the bit at position <code>bitnum</code> according to <code>bit</code>
and return the previous value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bitnum</code> - bit number, restricted to [0..<a href="../../../../com/jogamp/common/util/Bitfield.html#size--"><code>size()</code></a>-1].</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></code> - if <code>bitnum</code> is out of bounds</dd>
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<h4>set</h4>
<pre>void set(int bitnum)
throws <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></pre>
<div class="block">Set the bit at position <code>bitnum</code> according to <code>bit</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bitnum</code> - bit number, restricted to [0..<a href="../../../../com/jogamp/common/util/Bitfield.html#size--"><code>size()</code></a>-1].</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></code> - if <code>bitnum</code> is out of bounds</dd>
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<h4>clear</h4>
<pre>void clear(int bitnum)
throws <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></pre>
<div class="block">Clear the bit at position <code>bitnum</code> according to <code>bit</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bitnum</code> - bit number, restricted to [0..<a href="../../../../com/jogamp/common/util/Bitfield.html#size--"><code>size()</code></a>-1].</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></code> - if <code>bitnum</code> is out of bounds</dd>
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<h4>copy</h4>
<pre>boolean copy(int srcBitnum,
int dstBitnum)
throws <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></pre>
<div class="block">Copies the bit at position <code>srcBitnum</code> to position <code>dstBitnum</code>
and returning <code>true</code> if the bit is set, otherwise <code>false</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>srcBitnum</code> - source bit number, restricted to [0..<a href="../../../../com/jogamp/common/util/Bitfield.html#size--"><code>size()</code></a>-1].</dd>
<dd><code>dstBitnum</code> - destination bit number, restricted to [0..<a href="../../../../com/jogamp/common/util/Bitfield.html#size--"><code>size()</code></a>-1].</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang">IndexOutOfBoundsException</a></code> - if <code>bitnum</code> is out of bounds</dd>
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<h4>bitCount</h4>
<pre>int bitCount()</pre>
<div class="block">Returns the number of one bits within this bitfield.
<p>
Utilizes {#link <a href="../../../../com/jogamp/common/util/Bitfield.Util.html#bitCount-int-"><code>Bitfield.Util.bitCount(int)</code></a>}.
</p></div>
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