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<h2><a name="ceil" id="ceil">ceil</a></h2>
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<p>
Syntax:
</p>
<pre class="c code c++" style="font-family:monospace;">    <span class="co2">#include &lt;cmath&gt;</span>
    <span class="kw4">double</span> ceil<span class="br0">&#40;</span> <span class="kw4">double</span> num <span class="br0">&#41;</span><span class="sy0">;</span></pre>
<p>

The ceil() function returns the smallest integer no less than num. For example,
</p>
<pre class="c code c++" style="font-family:monospace;">     y <span class="sy0">=</span> <span class="nu16">6.04</span><span class="sy0">;</span>
     x <span class="sy0">=</span> ceil<span class="br0">&#40;</span> y <span class="br0">&#41;</span><span class="sy0">;</span></pre>
<p>

would set x to 7.0.
</p>

<p>
C++ also provides the following overloaded forms:

</p>
<pre class="c code c++" style="font-family:monospace;">    <span class="co2">#include &lt;cmath&gt;</span>
    <span class="kw4">float</span> ceil<span class="br0">&#40;</span> <span class="kw4">float</span> num <span class="br0">&#41;</span><span class="sy0">;</span> <span class="co1">// same as ceilf() in C99</span>
    <span class="kw4">long</span> <span class="kw4">double</span> ceil<span class="br0">&#40;</span> <span class="kw4">long</span> <span class="kw4">double</span> num <span class="br0">&#41;</span><span class="sy0">;</span> <span class="co1">// same as ceill() in C99</span></pre>
<p>
Related Topics: <a href="../../c/math/floor.html" class="wikilink1" title="c:math:floor">floor</a>, <a href="../../c/math/fmod.html" class="wikilink1" title="c:math:fmod">fmod</a>
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