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<title>Exponential Function - GNU Scientific Library -- Reference Manual</title>
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<a name="Exponential-Function"></a>
Next: <a rel="next" accesskey="n" href="Relative-Exponential-Functions.html">Relative Exponential Functions</a>,
Up: <a rel="up" accesskey="u" href="Exponential-Functions.html">Exponential Functions</a>
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<h4 class="subsection">7.16.1 Exponential Function</h4>
<div class="defun">
— Function: double <b>gsl_sf_exp</b> (<var>double x</var>)<var><a name="index-gsl_005fsf_005fexp-488"></a></var><br>
— Function: int <b>gsl_sf_exp_e</b> (<var>double x, gsl_sf_result * result</var>)<var><a name="index-gsl_005fsf_005fexp_005fe-489"></a></var><br>
<blockquote><p>These routines provide an exponential function \exp(x) using GSL
semantics and error checking.
<!-- Exceptional Return Values: GSL_EOVRFLW, GSL_EUNDRFLW -->
</p></blockquote></div>
<div class="defun">
— Function: int <b>gsl_sf_exp_e10_e</b> (<var>double x, gsl_sf_result_e10 * result</var>)<var><a name="index-gsl_005fsf_005fexp_005fe10_005fe-490"></a></var><br>
<blockquote><p>This function computes the exponential \exp(x) using the
<code>gsl_sf_result_e10</code> type to return a result with extended range.
This function may be useful if the value of \exp(x) would
overflow the numeric range of <code>double</code>.
<!-- Exceptional Return Values: GSL_EOVRFLW, GSL_EUNDRFLW -->
</p></blockquote></div>
<div class="defun">
— Function: double <b>gsl_sf_exp_mult</b> (<var>double x, double y</var>)<var><a name="index-gsl_005fsf_005fexp_005fmult-491"></a></var><br>
— Function: int <b>gsl_sf_exp_mult_e</b> (<var>double x, double y, gsl_sf_result * result</var>)<var><a name="index-gsl_005fsf_005fexp_005fmult_005fe-492"></a></var><br>
<blockquote><p>These routines exponentiate <var>x</var> and multiply by the factor <var>y</var>
to return the product y \exp(x).
<!-- Exceptional Return Values: GSL_EOVRFLW, GSL_EUNDRFLW -->
</p></blockquote></div>
<div class="defun">
— Function: int <b>gsl_sf_exp_mult_e10_e</b> (<var>const double x, const double y, gsl_sf_result_e10 * result</var>)<var><a name="index-gsl_005fsf_005fexp_005fmult_005fe10_005fe-493"></a></var><br>
<blockquote><p>This function computes the product y \exp(x) using the
<code>gsl_sf_result_e10</code> type to return a result with extended numeric
range.
<!-- Exceptional Return Values: GSL_EOVRFLW, GSL_EUNDRFLW -->
</p></blockquote></div>
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