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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.sysds.runtime.util</a></div>
<h2 title="Class FastBufferedDataInputStream" class="title">Class FastBufferedDataInputStream</h2>
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<li><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink">java.io.InputStream</a></li>
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<li><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/FilterInputStream.html?is-external=true" title="class or interface in java.io" class="externalLink">java.io.FilterInputStream</a></li>
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<li>org.apache.sysds.runtime.util.FastBufferedDataInputStream</li>
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<pre>public class <span class="typeNameLabel">FastBufferedDataInputStream</span>
extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/FilterInputStream.html?is-external=true" title="class or interface in java.io" class="externalLink">FilterInputStream</a>
implements <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/DataInput.html?is-external=true" title="class or interface in java.io" class="externalLink">DataInput</a>, <a href="../matrix/data/MatrixBlockDataInput.html" title="interface in org.apache.sysds.runtime.matrix.data">MatrixBlockDataInput</a></pre>
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<th class="colFirst" scope="col">Constructor</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(java.io.InputStream)">FastBufferedDataInputStream</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink">InputStream</a>&nbsp;in)</code></th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(java.io.InputStream,int)">FastBufferedDataInputStream</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink">InputStream</a>&nbsp;in,
int&nbsp;size)</code></th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readBoolean()">readBoolean</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>byte</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readByte()">readByte</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>char</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readChar()">readChar</a></span>()</code></th>
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<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readDouble()">readDouble</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>long</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readDoubleArray(int,double%5B%5D)">readDoubleArray</a></span>&#8203;(int&nbsp;len,
double[]&nbsp;varr)</code></th>
<td class="colLast">
<div class="block">Reads the double array from the data input into the given dense block
and returns the number of non-zeros.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>float</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readFloat()">readFloat</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readFully(byte%5B%5D)">readFully</a></span>&#8203;(byte[]&nbsp;b)</code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readFully(byte%5B%5D,int,int)">readFully</a></span>&#8203;(byte[]&nbsp;b,
int&nbsp;off,
int&nbsp;len)</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i8" class="altColor">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readInt()">readInt</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readLine()">readLine</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i10" class="altColor">
<td class="colFirst"><code>long</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readLong()">readLong</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>short</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readShort()">readShort</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>long</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readSparseRows(int,long,org.apache.sysds.runtime.data.SparseBlock)">readSparseRows</a></span>&#8203;(int&nbsp;rlen,
long&nbsp;nnz,
<a href="../data/SparseBlock.html" title="class in org.apache.sysds.runtime.data">SparseBlock</a>&nbsp;rows)</code></th>
<td class="colLast">
<div class="block">Reads the sparse rows array from the data input into a sparse block
and returns the number of non-zeros.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readUnsignedByte()">readUnsignedByte</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readUnsignedShort()">readUnsignedShort</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#readUTF()">readUTF</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#skipBytes(int)">skipBytes</a></span>&#8203;(int&nbsp;n)</code></th>
<td class="colLast">&nbsp;</td>
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<h3>Methods inherited from class&nbsp;java.io.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/FilterInputStream.html?is-external=true" title="class or interface in java.io" class="externalLink">FilterInputStream</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/FilterInputStream.html?is-external=true#available()" title="class or interface in java.io" class="externalLink">available</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/FilterInputStream.html?is-external=true#close()" title="class or interface in java.io" class="externalLink">close</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/FilterInputStream.html?is-external=true#mark(int)" title="class or interface in java.io" class="externalLink">mark</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/FilterInputStream.html?is-external=true#markSupported()" title="class or interface in java.io" class="externalLink">markSupported</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/FilterInputStream.html?is-external=true#read()" title="class or interface in java.io" class="externalLink">read</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/FilterInputStream.html?is-external=true#read(byte%5B%5D)" title="class or interface in java.io" class="externalLink">read</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/FilterInputStream.html?is-external=true#read(byte%5B%5D,int,int)" title="class or interface in java.io" class="externalLink">read</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/FilterInputStream.html?is-external=true#reset()" title="class or interface in java.io" class="externalLink">reset</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/FilterInputStream.html?is-external=true#skip(long)" title="class or interface in java.io" class="externalLink">skip</a></code></li>
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<h3>Methods inherited from class&nbsp;java.io.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink">InputStream</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true#nullInputStream()" title="class or interface in java.io" class="externalLink">nullInputStream</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true#readAllBytes()" title="class or interface in java.io" class="externalLink">readAllBytes</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true#readNBytes(byte%5B%5D,int,int)" title="class or interface in java.io" class="externalLink">readNBytes</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true#readNBytes(int)" title="class or interface in java.io" class="externalLink">readNBytes</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true#transferTo(java.io.OutputStream)" title="class or interface in java.io" class="externalLink">transferTo</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink">equals</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink">toString</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></li>
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<h4>FastBufferedDataInputStream</h4>
<pre>public&nbsp;FastBufferedDataInputStream&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink">InputStream</a>&nbsp;in)</pre>
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<h4>FastBufferedDataInputStream</h4>
<pre>public&nbsp;FastBufferedDataInputStream&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html?is-external=true" title="class or interface in java.io" class="externalLink">InputStream</a>&nbsp;in,
int&nbsp;size)</pre>
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<h4>readFully</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;readFully&#8203;(byte[]&nbsp;b)
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/DataInput.html?is-external=true#readFully(byte%5B%5D)" title="class or interface in java.io" class="externalLink">readFully</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/DataInput.html?is-external=true" title="class or interface in java.io" class="externalLink">DataInput</a></code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;void&nbsp;readFully&#8203;(byte[]&nbsp;b,
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;int&nbsp;skipBytes&#8203;(int&nbsp;n)
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;boolean&nbsp;readBoolean()
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<dt><span class="throwsLabel">Throws:</span></dt>
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<pre class="methodSignature">public&nbsp;byte&nbsp;readByte()
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;int&nbsp;readUnsignedByte()
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<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/DataInput.html?is-external=true#readUnsignedByte()" title="class or interface in java.io" class="externalLink">readUnsignedByte</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/DataInput.html?is-external=true" title="class or interface in java.io" class="externalLink">DataInput</a></code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;short&nbsp;readShort()
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
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<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/DataInput.html?is-external=true#readShort()" title="class or interface in java.io" class="externalLink">readShort</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/DataInput.html?is-external=true" title="class or interface in java.io" class="externalLink">DataInput</a></code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;int&nbsp;readUnsignedShort()
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
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<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/DataInput.html?is-external=true#readUnsignedShort()" title="class or interface in java.io" class="externalLink">readUnsignedShort</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/DataInput.html?is-external=true" title="class or interface in java.io" class="externalLink">DataInput</a></code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;char&nbsp;readChar()
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;int&nbsp;readInt()
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;long&nbsp;readLong()
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<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/DataInput.html?is-external=true#readLong()" title="class or interface in java.io" class="externalLink">readLong</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/DataInput.html?is-external=true" title="class or interface in java.io" class="externalLink">DataInput</a></code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;float&nbsp;readFloat()
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;double&nbsp;readDouble()
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;readLine()
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;readUTF()
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
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<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/DataInput.html?is-external=true#readUTF()" title="class or interface in java.io" class="externalLink">readUTF</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/DataInput.html?is-external=true" title="class or interface in java.io" class="externalLink">DataInput</a></code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code></dd>
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<pre class="methodSignature">public&nbsp;long&nbsp;readDoubleArray&#8203;(int&nbsp;len,
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throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../matrix/data/MatrixBlockDataInput.html#readDoubleArray(int,double%5B%5D)">MatrixBlockDataInput</a></code></span></div>
<div class="block">Reads the double array from the data input into the given dense block
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<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../matrix/data/MatrixBlockDataInput.html#readDoubleArray(int,double%5B%5D)">readDoubleArray</a></code>&nbsp;in interface&nbsp;<code><a href="../matrix/data/MatrixBlockDataInput.html" title="interface in org.apache.sysds.runtime.matrix.data">MatrixBlockDataInput</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>len</code> - ?</dd>
<dd><code>varr</code> - ?</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>number of non-zeros</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
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<h4>readSparseRows</h4>
<pre class="methodSignature">public&nbsp;long&nbsp;readSparseRows&#8203;(int&nbsp;rlen,
long&nbsp;nnz,
<a href="../data/SparseBlock.html" title="class in org.apache.sysds.runtime.data">SparseBlock</a>&nbsp;rows)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../matrix/data/MatrixBlockDataInput.html#readSparseRows(int,long,org.apache.sysds.runtime.data.SparseBlock)">MatrixBlockDataInput</a></code></span></div>
<div class="block">Reads the sparse rows array from the data input into a sparse block
and returns the number of non-zeros.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../matrix/data/MatrixBlockDataInput.html#readSparseRows(int,long,org.apache.sysds.runtime.data.SparseBlock)">readSparseRows</a></code>&nbsp;in interface&nbsp;<code><a href="../matrix/data/MatrixBlockDataInput.html" title="interface in org.apache.sysds.runtime.matrix.data">MatrixBlockDataInput</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rlen</code> - number of rows</dd>
<dd><code>nnz</code> - number of non-zeros</dd>
<dd><code>rows</code> - sparse block</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>number of non-zeros</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOExcepton occurs</dd>
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