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Next: <a href="Missing-Data.html#Missing-Data" accesskey="n" rel="next">Missing Data</a>, Up: <a href="Built_002din-Data-Types.html#Built_002din-Data-Types" 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#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<h4 class="subsection">3.1.1 Numeric Objects</h4>
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<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 the
IEEE 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>realmin</code>,
<code>realmax</code>, and <code>eps</code>, respectively.
</p>
<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 href="Index-Expressions.html#Index-Expressions">Index Expressions</a>.
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<p>See <a href="Numeric-Data-Types.html#Numeric-Data-Types">Numeric Data Types</a>, for more information.
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