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<title>Issue 2404: mismatch()'s complexity needs to be updated</title>
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<p><em>This page is a snapshot from the LWG issues list, see the <a href="lwg-active.html">Library Active Issues List</a> for more information and the meaning of <a href="lwg-active.html#C++17">C++17</a> status.</em></p>
<h3 id="2404"><a href="lwg-defects.html#2404">2404</a>. <code>mismatch()</code>'s complexity needs to be updated</h3>
<p><b>Section:</b> 99 [mismatch] <b>Status:</b> <a href="lwg-active.html#C++17">C++17</a>
 <b>Submitter:</b> Stephan T. Lavavej <b>Opened:</b> 2014-06-14 <b>Last modified:</b> 2017-07-30</p>
<p><b>Priority: </b>0
</p>
<p><b>View all other</b> <a href="lwg-index.html#mismatch">issues</a> in [mismatch].</p>
<p><b>View all issues with</b> <a href="lwg-status.html#C++17">C++17</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3671.html">N3671</a> updated the complexities of 
<code>equal()</code> and <code>is_permutation()</code>, but not <code>mismatch()</code>.
</p>

<p><i>[2014-06-16 Rapperswil]</i></p>

<p>
Move to Ready
</p>



<p id="res-2404"><b>Proposed resolution:</b></p>
<p>This wording is relative to N3936.</p>

<ol>
<li><p>Change 99 [mismatch] p3 as indicated:</p>

<blockquote>
<p>
-3- <i>Complexity</i>: At most <code><ins>min(</ins>last1 - first1<ins>, last2 - first2)</ins></code> applications of the 
corresponding predicate.
</p>
</blockquote>
</li>

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