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<a name="gslint-exceptions"></a>
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<a name="gslint-exceptions-1"></a>
<h3 class="subsection">D.7.3 <code>gslint</code> exceptions</h3>

<p>If an argument of an inappropriate form can be detected (such as an
empty pair or one without floating point numbers), it causes an error
message to be returned saying 
<a name="index-bad-integral-specification"></a>
</p>
<table><tr><td>&nbsp;</td><td><pre class="example">&lt;'bad integral specification'&gt;
</pre></td></tr></table>

<p>Error messages signalled by the integrand <var>f</var> may also be
reported, as well as any message returned by <code>gsl_strerror</code>. A
typical cause for a <code>gsl_strerror</code> message would be an explicitly
specified tolerance that is too tight. An error message of
<a name="index-slow-convergence"></a>
</p>
<table><tr><td>&nbsp;</td><td><pre class="example">&lt;'slow convergence'&gt;
</pre></td></tr></table>

<p>is returned in the event of excessively many function evaluations
(currently 3600 at each tolerance level).
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