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Next: <a href="Missing-Data.html" accesskey="n" rel="next">Missing Data</a>, Up: <a href="Built_002din-Data-Types.html" accesskey="u" rel="up">Built-in Data Types</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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<h4 class="subsection" id="Numeric-Objects-1"><span>3.1.1 Numeric Objects<a class="copiable-link" href="#Numeric-Objects-1"> ¶</a></span></h4>
<a class="index-entry-id" id="index-numeric-constant"></a>
<a class="index-entry-id" id="index-numeric-value"></a>
<p>Octave’s built-in numeric objects include real, complex, and integer
scalars and matrices. All built-in floating point numeric data is
currently stored as double precision numbers. On systems that use
IEEE 754 floating point format, values in the range of approximately
2.2251e-308 to 1.7977e+308
can be stored, and the relative precision is approximately
2.2204e-16.
The exact values are given by the variables <code class="code">realmin</code>,
<code class="code">realmax</code>, and <code class="code">eps</code>, respectively.
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<p>Matrix objects can be of any size, and can be dynamically reshaped and resized.
It is easy to extract individual rows, columns, or submatrices using a variety
of powerful indexing features. See <a class="xref" href="Index-Expressions.html">Index Expressions</a>.
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<p>See <a class="xref" href="Numeric-Data-Types.html">Numeric Data Types</a>, for more information.
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