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Next: <a rel="next" accesskey="n" href="Applying-Permutations.html">Applying Permutations</a>,
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<h3 class="section">9.5 Permutation functions</h3>
<div class="defun">
— Function: void <b>gsl_permutation_reverse</b> (<var>gsl_permutation * p</var>)<var><a name="index-gsl_005fpermutation_005freverse-1008"></a></var><br>
<blockquote><p><a name="index-reversing-a-permutation-1009"></a>This function reverses the elements of the permutation <var>p</var>.
</p></blockquote></div>
<div class="defun">
— Function: int <b>gsl_permutation_inverse</b> (<var>gsl_permutation * inv, const gsl_permutation * p</var>)<var><a name="index-gsl_005fpermutation_005finverse-1010"></a></var><br>
<blockquote><p><a name="index-inverting-a-permutation-1011"></a>This function computes the inverse of the permutation <var>p</var>, storing
the result in <var>inv</var>.
</p></blockquote></div>
<div class="defun">
— Function: int <b>gsl_permutation_next</b> (<var>gsl_permutation * p</var>)<var><a name="index-gsl_005fpermutation_005fnext-1012"></a></var><br>
<blockquote><p><a name="index-iterating-through-permutations-1013"></a>This function advances the permutation <var>p</var> to the next permutation
in lexicographic order and returns <code>GSL_SUCCESS</code>. If no further
permutations are available it returns <code>GSL_FAILURE</code> and leaves
<var>p</var> unmodified. Starting with the identity permutation and
repeatedly applying this function will iterate through all possible
permutations of a given order.
</p></blockquote></div>
<div class="defun">
— Function: int <b>gsl_permutation_prev</b> (<var>gsl_permutation * p</var>)<var><a name="index-gsl_005fpermutation_005fprev-1014"></a></var><br>
<blockquote><p>This function steps backwards from the permutation <var>p</var> to the
previous permutation in lexicographic order, returning
<code>GSL_SUCCESS</code>. If no previous permutation is available it returns
<code>GSL_FAILURE</code> and leaves <var>p</var> unmodified.
</p></blockquote></div>
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