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<a name="fmax_002c-fmaxf_002d_002d_002dmaximum"></a>
<h3 class="section">1.23 <code>fmax</code>, <code>fmaxf</code>—maximum</h3>
<a name="index-fmax"></a>
<a name="index-fmaxf"></a>
<p><strong>Synopsis</strong>
</p><div class="example">
<pre class="example">#include <math.h>
double fmax(double <var>x</var>, double <var>y</var>);
float fmaxf(float <var>x</var>, float <var>y</var>);
</pre></div>
<p><strong>Description</strong><br>
The <code>fmax</code> functions determine the maximum numeric value of their arguments.
NaN arguments are treated as missing data: if one argument is a NaN and the
other numeric, then the <code>fmax</code> functions choose the numeric value.
</p>
<br>
<p><strong>Returns</strong><br>
The <code>fmax</code> functions return the maximum numeric value of their arguments.
</p>
<br>
<p><strong>Portability</strong><br>
ANSI C, POSIX.
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