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<base href="http://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - std::isfinite() does not accept convertible-to-double"
href="http://llvm.org/bugs/show_bug.cgi?id=22707">22707</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>std::isfinite() does not accept convertible-to-double
</td>
</tr>
<tr>
<th>Product</th>
<td>libc++
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>eugeni.stepanov@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, mclow.lists@gmail.com
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>#include <cmath>
struct A {
A(double x) : x(x) {}
operator double() const { return x; }
double x;
};
A a(1.0);
bool z = std::isfinite(a);
error: no matching function for call to 'isfinite'
bool z = std::isfinite(a);
^~~~~~~~~~~~~
/code/llvm/build/bin/../include/c++/v1/cmath:376:25: note: candidate template
ignored: disabled by 'enable_if' [with _A1 = A]
typename std::enable_if<std::is_arithmetic<_A1>::value, bool>::type
The Standard requires an overload of
bool isfinite(double x);
Instead, libc++ provides a template implementation with a SFINAE checking for
an arithmetic type.</pre>
</div>
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