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<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="atan2.html" title="cpp/numeric/math/atan2"><span class="t-lines"><span>atan2</span></span></a></div></div></td></tr>
</table></div></td>
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="sinh.html" title="cpp/numeric/math/sinh"><span class="t-lines"><span>sinh</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="cosh.html" title="cpp/numeric/math/cosh"><span class="t-lines"><span>cosh</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="tanh.html" title="cpp/numeric/math/tanh"><span class="t-lines"><span>tanh</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="asinh.html" title="cpp/numeric/math/asinh"><span class="t-lines"><span>asinh</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="acosh.html" title="cpp/numeric/math/acosh"><span class="t-lines"><span>acosh</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="atanh.html" title="cpp/numeric/math/atanh"><span class="t-lines"><span>atanh</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
</table></div></td>
</tr>
</table></div>
</div>
<div style="display:inline-block">
<div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv-h2"><td colspan="5"> Error and gamma functions</td></tr>
<tr class="t-nv-col-table">
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="erf.html" title="cpp/numeric/math/erf"><span class="t-lines"><span>erf</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="erfc.html" title="cpp/numeric/math/erfc"><span class="t-lines"><span>erfc</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
</table></div></td>
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="lgamma.html" title="cpp/numeric/math/lgamma"><span class="t-lines"><span>lgamma</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="tgamma.html" title="cpp/numeric/math/tgamma"><span class="t-lines"><span>tgamma</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
</table></div></td>
</tr>
<tr class="t-nv-h2"><td colspan="5"> Nearest integer floating point operations</td></tr>
<tr class="t-nv-col-table">
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="ceil.html" title="cpp/numeric/math/ceil"><span class="t-lines"><span>ceil</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="floor.html" title="cpp/numeric/math/floor"><span class="t-lines"><span>floor</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="round.html" title="cpp/numeric/math/round"><span class="t-lines"><span>round</span><span>lround</span><span>llround</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
</table></div></td>
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="trunc.html" title="cpp/numeric/math/trunc"><span class="t-lines"><span>trunc</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="nearbyint.html" title="cpp/numeric/math/nearbyint"><span class="t-lines"><span>nearbyint</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="rint.html" title="cpp/numeric/math/rint"><span class="t-lines"><span>rint</span><span>lrint</span><span>llrint</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
</table></div></td>
</tr>
<tr class="t-nv-h2"><td colspan="5"> Floating point manipulation functions</td></tr>
<tr class="t-nv-col-table">
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="ldexp.html" title="cpp/numeric/math/ldexp"><span class="t-lines"><span>ldexp</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="scalbn.html" title="cpp/numeric/math/scalbn"><span class="t-lines"><span>scalbn</span><span>scalbln</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="ilogb.html" title="cpp/numeric/math/ilogb"><span class="t-lines"><span>ilogb</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="logb.html" title="cpp/numeric/math/logb"><span class="t-lines"><span>logb</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
</table></div></td>
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="frexp.html" title="cpp/numeric/math/frexp"><span class="t-lines"><span>frexp</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="modf.html" title="cpp/numeric/math/modf"><span class="t-lines"><span>modf</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="nextafter.html" title="cpp/numeric/math/nextafter"><span class="t-lines"><span>nextafter</span><span>nexttoward</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="copysign.html" title="cpp/numeric/math/copysign"><span class="t-lines"><span>copysign</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
</table></div></td>
</tr>
<tr class="t-nv-h2"><td colspan="5"> Classification/Comparison</td></tr>
<tr class="t-nv-col-table">
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="fpclassify.html" title="cpp/numeric/math/fpclassify"><span class="t-lines"><span>fpclassify</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="isfinite.html" title="cpp/numeric/math/isfinite"><span class="t-lines"><span>isfinite</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="isinf.html" title="cpp/numeric/math/isinf"><span class="t-lines"><span>isinf</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="isnan.html" title="cpp/numeric/math/isnan"><span class="t-lines"><span>isnan</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="isnormal.html" title="cpp/numeric/math/isnormal"><span class="t-lines"><span>isnormal</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="signbit.html" title="cpp/numeric/math/signbit"><span class="t-lines"><span>signbit</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
</table></div></td>
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="isgreater.html" title="cpp/numeric/math/isgreater"><span class="t-lines"><span>isgreater</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="isgreaterequal.html" title="cpp/numeric/math/isgreaterequal"><span class="t-lines"><span>isgreaterequal</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="isless.html" title="cpp/numeric/math/isless"><span class="t-lines"><span>isless</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="islessequal.html" title="cpp/numeric/math/islessequal"><span class="t-lines"><span>islessequal</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="islessgreater.html" title="cpp/numeric/math/islessgreater"><span class="t-lines"><span>islessgreater</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="isunordered.html" title="cpp/numeric/math/isunordered"><span class="t-lines"><span>isunordered</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
</table></div></td>
</tr>
<tr class="t-nv-h1"><td colspan="5"> Macro constants</td></tr>
<tr class="t-nv-col-table">
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="HUGE_VAL.html" title="cpp/numeric/math/HUGE VAL"><span class="t-lines"><span>HUGE_VALF</span><span>HUGE_VAL</span><span>HUGE_VALL</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="INFINITY.html" title="cpp/numeric/math/INFINITY"><span class="t-lines"><span>INFINITY</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="NAN.2.html" title="cpp/numeric/math/NAN"><span class="t-lines"><span>NAN</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="math_errhandling.html" title="cpp/numeric/math/math errhandling"><span class="t-lines"><span>math_errhandling</span><span>MATH_ERRNO</span><span>MATH_ERREXCEPT</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
</table></div></td>
<td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table">
<div><a href="FP_categories.html" title="cpp/numeric/math/FP categories"><span class="t-lines"><span>FP_NORMAL</span><span>FP_SUBNORMAL</span><span>FP_ZERO</span><span>FP_INFINITE</span><span>FP_NAN</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div></td></tr>
</table></div></td>
</tr>
</table></div>
</div>
<div></div>
</div></div>
</div>
<div class="t-navbar-sep"> </div>
</div>
<table class="t-dcl-begin"><tbody>
<tr class="t-dsc-header">
<td> <div>Defined in header <code><a href="../../header/cmath.html" title="cpp/header/cmath">&lt;cmath&gt;</a></code>
 </div>
</td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">float</span>       exp<span class="br0">(</span> <span class="kw4">float</span> arg <span class="br0">)</span><span class="sy4">;</span></span></div>
</td>
<td> (1) </td>
<td class="t-dcl-nopad">  </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">double</span>      exp<span class="br0">(</span> <span class="kw4">double</span> arg <span class="br0">)</span><span class="sy4">;</span></span></div>
</td>
<td> (2) </td>
<td class="t-dcl-nopad">  </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">long</span> <span class="kw4">double</span> exp<span class="br0">(</span> <span class="kw4">long</span> <span class="kw4">double</span> arg <span class="br0">)</span><span class="sy4">;</span></span></div>
</td>
<td> (3) </td>
<td class="t-dcl-nopad">  </td>
</tr>
<tr class="t-dcl t-since-cxx11">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">double</span>      exp<span class="br0">(</span> Integral arg <span class="br0">)</span><span class="sy4">;</span></span></div>
</td>
<td> (4) </td>
<td> <span class="t-mark-rev t-since-cxx11">(since C++11)</span> </td>
</tr>
<tr class="t-dcl-sep">
<td></td>
<td></td>
<td></td>
</tr>
</tbody></table>
<p>Computes the <i>e</i> (Euler's number, <code>2.7182818</code>) raised to the given power <code>arg</code>
</p>
<div class="t-li1">
<span class="t-li">4)</span> A set of overloads or a function template accepting an argument of any <a href="../../types/is_integral.html" title="cpp/types/is integral">integral type</a>. Equivalent to 2) (the argument is cast to <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw4">double</span></span></span>).</div>
<table id="toc" class="toc"><tr><td>
<div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="exp.html%23Parameters"><span class="tocnumber">1</span> <span class="toctext">Parameters</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="exp.html%23Return_value"><span class="tocnumber">2</span> <span class="toctext">Return value</span></a></li>
<li class="toclevel-1 tocsection-3"><a href="exp.html%23Error_handling"><span class="tocnumber">3</span> <span class="toctext">Error handling</span></a></li>
<li class="toclevel-1 tocsection-4"><a href="exp.html%23Notes"><span class="tocnumber">4</span> <span class="toctext">Notes</span></a></li>
<li class="toclevel-1 tocsection-5"><a href="exp.html%23Example"><span class="tocnumber">5</span> <span class="toctext">Example</span></a></li>
<li class="toclevel-1 tocsection-6"><a href="exp.html%23See_also"><span class="tocnumber">6</span> <span class="toctext">See also</span></a></li>
</ul>
</td></tr></table>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Parameters">edit</a>]</span> <span class="mw-headline" id="Parameters">Parameters</span>
</h3>
<table class="t-par-begin">


<tr class="t-par">
<td>  arg
</td>
<td> -
</td>
<td>  value of floating-point or <a href="../../types/is_integral.html" title="cpp/types/is integral">Integral type</a>
</td>
</tr>
</table>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Return value">edit</a>]</span> <span class="mw-headline" id="Return_value">Return value</span>
</h3>
<p>If no errors occur, the base-<i>e</i> exponential of <code>arg</code> (<span class="texhtml" style="white-space: nowrap;">e<span class="t-su">arg<br></span></span>) is returned.
</p>
<p>If a range error due to overflow occurs, <code>+HUGE_VAL</code>, <code>+HUGE_VALF</code>, or <code>+HUGE_VALL</code> is returned.
</p>
<p>If a range error occurs due to underflow, the correct result (after rounding) is returned.
</p>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Error handling">edit</a>]</span> <span class="mw-headline" id="Error_handling">Error handling</span>
</h3>
<p>Errors are reported as specified in <a href="math_errhandling.html" title="cpp/numeric/math/math errhandling">math_errhandling</a>
</p>
<p>If the implementation supports IEEE floating-point arithmetic (IEC 60559),
</p>
<ul>
<li> If the argument is ±0, 1 is returned
</li>
<li> If the argument is -∞, +0 is returned
</li>
<li> If the argument is +∞, +∞ is returned
</li>
<li> If the argument is NaN, NaN is returned
</li>
</ul>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Notes">edit</a>]</span> <span class="mw-headline" id="Notes">Notes</span>
</h3>
<p>For IEEE-compatible type <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw4">double</span></span></span>, overflow is guaranteed if <span class="texhtml" style="white-space: nowrap;">709.8 &lt; arg</span>, and underflow is guaranteed if <span class="texhtml" style="white-space: nowrap;">arg &lt; -708.4</span>
</p>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Example">edit</a>]</span> <span class="mw-headline" id="Example">Example</span>
</h3>
<div class="t-example">
<div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="co2">#include &lt;iostream&gt;</span>
<span class="co2">#include &lt;cmath&gt;</span>
<span class="co2">#include &lt;cerrno&gt;</span>
<span class="co2">#include &lt;cstring&gt;</span>
<span class="co2">#include &lt;cfenv&gt;</span>
<span class="co2">#pragma STDC FENV_ACCESS ON</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
    <a href="../../io/basic_ostream.html"><span class="kw1439">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">"exp(1) = "</span> <span class="sy1">&lt;&lt;</span> std<span class="sy4">::</span><span class="me2">exp</span><span class="br0">(</span><span class="nu0">1</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">'<span class="es1">\n</span>'</span>
              <span class="sy1">&lt;&lt;</span> <span class="st0">"FV of $100, continuously compounded at 3% for 1 year = "</span>
              <span class="sy1">&lt;&lt;</span> <span class="nu0">100</span><span class="sy2">*</span>std<span class="sy4">::</span><span class="me2">exp</span><span class="br0">(</span><span class="nu16">0.03</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
    <span class="co1">// special values</span>
    <a href="../../io/basic_ostream.html"><span class="kw1439">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">"exp(-0) = "</span> <span class="sy1">&lt;&lt;</span> std<span class="sy4">::</span><span class="me2">exp</span><span class="br0">(</span><span class="sy2">-</span><span class="nu16">0.0</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">'<span class="es1">\n</span>'</span>
              <span class="sy1">&lt;&lt;</span> <span class="st0">"exp(-Inf) = "</span> <span class="sy1">&lt;&lt;</span> std<span class="sy4">::</span><span class="me2">exp</span><span class="br0">(</span><span class="sy2">-</span><a href="INFINITY.html"><span class="kw1154">INFINITY</span></a><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
    <span class="co1">// error handling </span>
    <span class="kw2">errno</span><span class="sy1">=</span><span class="nu0">0</span><span class="sy4">;</span> <a href="http%3A//en.cppreference.com/w/cpp/numeric/fenv/fecrearexcept"><span class="kw1164">std::<span class="me2">feclearexcept</span></span></a><span class="br0">(</span><a href="../fenv/FE_exceptions.html"><span class="kw1175">FE_ALL_EXCEPT</span></a><span class="br0">)</span><span class="sy4">;</span>
    <a href="../../io/basic_ostream.html"><span class="kw1439">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">"exp(710) = "</span> <span class="sy1">&lt;&lt;</span> std<span class="sy4">::</span><span class="me2">exp</span><span class="br0">(</span><span class="nu0">710</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
    <span class="kw1">if</span><span class="br0">(</span><span class="kw2">errno</span> <span class="sy1">==</span> <a href="../../error/errno_macros.html"><span class="kw708">ERANGE</span></a><span class="br0">)</span>
        <a href="../../io/basic_ostream.html"><span class="kw1439">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">"    errno == ERANGE: "</span> <span class="sy1">&lt;&lt;</span> <a href="../../string/byte/strerror.html"><span class="kw976">std::<span class="me2">strerror</span></span></a><span class="br0">(</span><span class="kw2">errno</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
    <span class="kw1">if</span><span class="br0">(</span><a href="../fenv/fetestexcept.html"><span class="kw1165">std::<span class="me2">fetestexcept</span></span></a><span class="br0">(</span><a href="../fenv/FE_exceptions.html"><span class="kw1179">FE_OVERFLOW</span></a><span class="br0">)</span><span class="br0">)</span>
        <a href="../../io/basic_ostream.html"><span class="kw1439">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">"    FE_OVERFLOW raised<span class="es1">\n</span>"</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p>Possible output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">exp(1) = 2.71828
FV of $100, continuously compounded at 3% for 1 year = 103.045
exp(-0) = 1
exp(-Inf) = 0
exp(710) = inf
    errno == ERANGE: Numerical result out of range
    FE_OVERFLOW raised</pre></div></div> 
</div>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: See also">edit</a>]</span> <span class="mw-headline" id="See_also">See also</span>
</h3>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="exp2.html" title="cpp/numeric/math/exp2"> <span class="t-lines"><span>exp2</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   returns <i>2</i> raised to the given power (<span class="texhtml" style="white-space: nowrap;">2<sup>x</sup></span>)  <br> <span class="t-mark">(function)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="expm1.html" title="cpp/numeric/math/expm1"> <span class="t-lines"><span>expm1</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   returns <i>e</i> raised to the given power, minus one (<span class="texhtml" style="white-space: nowrap;">e<sup>x</sup>-1</span>)  <br> <span class="t-mark">(function)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="log.html" title="cpp/numeric/math/log"> <span class="t-lines"><span>log</span></span></a></div></div>
</td>
<td>   computes natural (base <i>e</i>) logarithm (to base <i>e</i>) (<span class="texhtml" style="white-space: nowrap;">ln(x)</span>)  <br> <span class="t-mark">(function)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="../complex/exp.html" title="cpp/numeric/complex/exp"> <span class="t-lines"><span>exp<span class="t-dsc-small">(std::complex)</span></span></span></a></div></div>
</td>
<td>   complex base <i>e</i> exponential  <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="../valarray/exp.html" title="cpp/numeric/valarray/exp"> <span class="t-lines"><span>exp<span class="t-dsc-small">(std::valarray)</span></span></span></a></div></div>
</td>
<td>   applies the function <span class="t-lc"><strong class="selflink">std::exp</strong></span> to each element of valarray <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td colspan="2"> <div class="t-dsc-see">
<span><a href="../../../c/numeric/math/exp.html" title="c/numeric/math/exp">C documentation</a></span> for <span class="t-dsc-see-tt"><span>exp</span></span>
</div>
</td>
</tr>

</table>

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