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<title>GNU Scientific Library – Reference Manual: Finding maximum and minimum elements of matrices</title>
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Next: <a href="Matrix-properties.html#Matrix-properties" accesskey="n" rel="next">Matrix properties</a>, Previous: <a href="Matrix-operations.html#Matrix-operations" accesskey="p" rel="previous">Matrix operations</a>, Up: <a href="Matrices.html#Matrices" accesskey="u" rel="up">Matrices</a> [<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Finding-maximum-and-minimum-elements-of-matrices-1"></a>
<h4 class="subsection">8.4.11 Finding maximum and minimum elements of matrices</h4>
<p>The following operations are only defined for real matrices.
</p>
<dl>
<dt><a name="index-gsl_005fmatrix_005fmax"></a>Function: <em>double</em> <strong>gsl_matrix_max</strong> <em>(const gsl_matrix * <var>m</var>)</em></dt>
<dd><p>This function returns the maximum value in the matrix <var>m</var>.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fmatrix_005fmin"></a>Function: <em>double</em> <strong>gsl_matrix_min</strong> <em>(const gsl_matrix * <var>m</var>)</em></dt>
<dd><p>This function returns the minimum value in the matrix <var>m</var>.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fmatrix_005fminmax"></a>Function: <em>void</em> <strong>gsl_matrix_minmax</strong> <em>(const gsl_matrix * <var>m</var>, double * <var>min_out</var>, double * <var>max_out</var>)</em></dt>
<dd><p>This function returns the minimum and maximum values in the matrix
<var>m</var>, storing them in <var>min_out</var> and <var>max_out</var>.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fmatrix_005fmax_005findex"></a>Function: <em>void</em> <strong>gsl_matrix_max_index</strong> <em>(const gsl_matrix * <var>m</var>, size_t * <var>imax</var>, size_t * <var>jmax</var>)</em></dt>
<dd><p>This function returns the indices of the maximum value in the matrix
<var>m</var>, storing them in <var>imax</var> and <var>jmax</var>. When there are
several equal maximum elements then the first element found is returned,
searching in row-major order.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fmatrix_005fmin_005findex"></a>Function: <em>void</em> <strong>gsl_matrix_min_index</strong> <em>(const gsl_matrix * <var>m</var>, size_t * <var>imin</var>, size_t * <var>jmin</var>)</em></dt>
<dd><p>This function returns the indices of the minimum value in the matrix
<var>m</var>, storing them in <var>imin</var> and <var>jmin</var>. When there are
several equal minimum elements then the first element found is returned,
searching in row-major order.
</p></dd></dl>
<dl>
<dt><a name="index-gsl_005fmatrix_005fminmax_005findex"></a>Function: <em>void</em> <strong>gsl_matrix_minmax_index</strong> <em>(const gsl_matrix * <var>m</var>, size_t * <var>imin</var>, size_t * <var>jmin</var>, size_t * <var>imax</var>, size_t * <var>jmax</var>)</em></dt>
<dd><p>This function returns the indices of the minimum and maximum values in
the matrix <var>m</var>, storing them in (<var>imin</var>,<var>jmin</var>) and
(<var>imax</var>,<var>jmax</var>). When there are several equal minimum or maximum
elements then the first elements found are returned, searching in
row-major order.
</p></dd></dl>
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