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<title>Issue 1440: Incorrect specification for piecewise_linear_distribution</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++11">C++11</a> status.</em></p>
<h3 id="1440"><a href="lwg-defects.html#1440">1440</a>. Incorrect specification for <code>piecewise_linear_distribution</code></h3>
<p><b>Section:</b> 29.5.9.6.3 <a href="https://wg21.link/rand.dist.samp.plinear">[rand.dist.samp.plinear]</a> <b>Status:</b> <a href="lwg-active.html#C++11">C++11</a>
 <b>Submitter:</b> INCITS <b>Opened:</b> 2010-08-25 <b>Last modified:</b> 2016-01-28</p>
<p><b>Priority: </b>Not Prioritized
</p>
<p><b>View all issues with</b> <a href="lwg-status.html#C++11">C++11</a> status.</p>
<p><b>Discussion:</b></p>
<p><b>Addresses US-135</b></p>

<p>
This paragraph says: Let bk = xmin+k&middot;&delta; for k = 0,...,n,
and wk = fw(bk +&delta;) for k = 0,...,n.
However I believe that fw(bk) would be far more desirable.
I strongly suspect that this is nothing but a type-o.
</p>

<p><i>[
Resolution proposed by ballot comment:
]</i></p>

<blockquote><p>
Change p. 10 to read:<br/>
Let bk = xmin+k&middot;&delta; for k = 0,...,n, and wk = fw(bk)
for k = 0,...,n.
</p></blockquote>

<p><i>[
2010-11-02 Daniel translates into a proposed resolution
]</i></p>


<p><i>[
2010 Batavia: The working group concurred with the issue's Proposed Resolution
]</i></p>


<p><i>[
Adopted at 2010-11 Batavia
]</i></p>




<p id="res-1440"><b>Proposed resolution:</b></p>
<p>Change 29.5.9.6.3 <a href="https://wg21.link/rand.dist.samp.plinear">[rand.dist.samp.plinear]</a> p. 10 as indicated:</p>
<blockquote><p>
10 <em>Effects</em>: Constructs a <code>piecewise_linear_distribution</code> object with parameters taken or calculated
from the following values: Let <code><em>b<sub>k</sub></em> = xmin+<em>k</em>&middot;&delta;</code> for 
<code><em>k</em> = 0, . . . , <em>n</em></code>, and <code><em>w<sub>k</sub></em> = fw(<em>b</em><sub><em>k</em></sub><del> +&delta;</del>)</code> 
for <code><em>k</em> = 0, . . . , <em>n</em></code>.
</p></blockquote>





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