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<title>GNU Scientific Library &ndash; Reference Manual: The ntuple struct</title>

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<a name="The-ntuple-struct"></a>
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<p>
Next: <a href="Creating-ntuples.html#Creating-ntuples" accesskey="n" rel="next">Creating ntuples</a>, Up: <a href="N_002dtuples.html#N_002dtuples" accesskey="u" rel="up">N-tuples</a> &nbsp; [<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
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<a name="The-ntuple-struct-1"></a>
<h3 class="section">24.1 The ntuple struct</h3>
<a name="index-gsl_005fntuple"></a>
<p>Ntuples are manipulated using the <code>gsl_ntuple</code> struct. This struct
contains information on the file where the ntuple data is stored, a
pointer to the current ntuple data row and the size of the user-defined
ntuple data struct.
</p>
<div class="example">
<pre class="example">typedef struct {
    FILE * file;
    void * ntuple_data;
    size_t size;
} gsl_ntuple;
</pre></div>




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