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<div class="titlepage"><div><div><h4 class="title">
<a name="boost_asio.reference.buffer_copy.overload18"></a><a class="link" href="overload18.html" title="buffer_copy (18 of 30 overloads)">buffer_copy
        (18 of 30 overloads)</a>
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<p>
          Copies a limited number of bytes from a source buffer to a target buffer.
        </p>
<pre class="programlisting"><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">buffer_copy</span><span class="special">(</span>
    <span class="keyword">const</span> <span class="identifier">mutable_buffer</span> <span class="special">&amp;</span> <span class="identifier">target</span><span class="special">,</span>
    <span class="keyword">const</span> <span class="identifier">mutable_buffer</span> <span class="special">&amp;</span> <span class="identifier">source</span><span class="special">,</span>
    <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">max_bytes_to_copy</span><span class="special">);</span>
</pre>
<a name="boost_asio.reference.buffer_copy.overload18.parameters"></a><h6>
<a name="boost_asio.reference.buffer_copy.overload18.parameters-heading"></a>
          <a class="link" href="overload18.html#boost_asio.reference.buffer_copy.overload18.parameters">Parameters</a>
        </h6>
<div class="variablelist">
<p class="title"><b></b></p>
<dl>
<dt><span class="term">target</span></dt>
<dd><p>
                A modifiable buffer representing the memory region to which the bytes
                will be copied.
              </p></dd>
<dt><span class="term">source</span></dt>
<dd><p>
                A modifiable buffer representing the memory region from which the
                bytes will be copied. The contents of the source buffer will not
                be modified.
              </p></dd>
<dt><span class="term">max_bytes_to_copy</span></dt>
<dd><p>
                The maximum number of bytes to be copied.
              </p></dd>
</dl>
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<a name="boost_asio.reference.buffer_copy.overload18.return_value"></a><h6>
<a name="boost_asio.reference.buffer_copy.overload18.return_value-heading"></a>
          <a class="link" href="overload18.html#boost_asio.reference.buffer_copy.overload18.return_value">Return
          Value</a>
        </h6>
<p>
          The number of bytes copied.
        </p>
<a name="boost_asio.reference.buffer_copy.overload18.remarks"></a><h6>
<a name="boost_asio.reference.buffer_copy.overload18.remarks-heading"></a>
          <a class="link" href="overload18.html#boost_asio.reference.buffer_copy.overload18.remarks">Remarks</a>
        </h6>
<p>
          The number of bytes copied is the lesser of:
        </p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
              <code class="computeroutput"><span class="identifier">buffer_size</span><span class="special">(</span><span class="identifier">target</span><span class="special">)</span></code>
            </li>
<li class="listitem">
              <code class="computeroutput"><span class="identifier">buffer_size</span><span class="special">(</span><span class="identifier">source</span><span class="special">)</span></code>
            </li>
<li class="listitem">
              <code class="computeroutput"><span class="identifier">max_bytes_to_copy</span></code>
            </li>
</ul></div>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2011 Christopher
      M. Kohlhoff<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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