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<a name="Permutation-allocation"></a>
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<p>
Next: <a href="Accessing-permutation-elements.html#Accessing-permutation-elements" accesskey="n" rel="next">Accessing permutation elements</a>, Previous: <a href="The-Permutation-struct.html#The-Permutation-struct" accesskey="p" rel="previous">The Permutation struct</a>, Up: <a href="Permutations.html#Permutations" accesskey="u" rel="up">Permutations</a> &nbsp; [<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Permutation-allocation-1"></a>
<h3 class="section">9.2 Permutation allocation</h3>

<dl>
<dt><a name="index-gsl_005fpermutation_005falloc"></a>Function: <em>gsl_permutation *</em> <strong>gsl_permutation_alloc</strong> <em>(size_t <var>n</var>)</em></dt>
<dd><p>This function allocates memory for a new permutation of size <var>n</var>.
The permutation is not initialized and its elements are undefined.  Use
the function <code>gsl_permutation_calloc</code> if you want to create a
permutation which is initialized to the identity. A null pointer is
returned if insufficient memory is available to create the permutation.
</p></dd></dl>

<dl>
<dt><a name="index-gsl_005fpermutation_005fcalloc"></a>Function: <em>gsl_permutation *</em> <strong>gsl_permutation_calloc</strong> <em>(size_t <var>n</var>)</em></dt>
<dd><p>This function allocates memory for a new permutation of size <var>n</var> and
initializes it to the identity. A null pointer is returned if
insufficient memory is available to create the permutation.
</p></dd></dl>

<dl>
<dt><a name="index-gsl_005fpermutation_005finit"></a>Function: <em>void</em> <strong>gsl_permutation_init</strong> <em>(gsl_permutation * <var>p</var>)</em></dt>
<dd><a name="index-identity-permutation"></a>
<p>This function initializes the permutation <var>p</var> to the identity, i.e.
<em>(0,1,2,&hellip;,n-1)</em>.
</p></dd></dl>

<dl>
<dt><a name="index-gsl_005fpermutation_005ffree"></a>Function: <em>void</em> <strong>gsl_permutation_free</strong> <em>(gsl_permutation * <var>p</var>)</em></dt>
<dd><p>This function frees all the memory used by the permutation <var>p</var>.
</p></dd></dl>

<dl>
<dt><a name="index-gsl_005fpermutation_005fmemcpy"></a>Function: <em>int</em> <strong>gsl_permutation_memcpy</strong> <em>(gsl_permutation * <var>dest</var>, const gsl_permutation * <var>src</var>)</em></dt>
<dd><p>This function copies the elements of the permutation <var>src</var> into the
permutation <var>dest</var>.  The two permutations must have the same size.
</p></dd></dl>




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