http://www.programmingexamples.net/w/index.php?action=history&feed=atom&title=CPP%2FBoost%2FMath%2FTools%2Fbrent_find_minima 2026-05-25T13:03:21Z Revision history for this page on the wiki MediaWiki 1.23.5 http://www.programmingexamples.net/w/index.php?title=CPP/Boost/Math/Tools/brent_find_minima&diff=4716&oldid=prev 2011-08-14T12:10:51Z

<p>simple brent_find_minima example</p> <p><b>New page</b></p><div>&lt;syntaxhighlight lang=&quot;cpp&quot;&gt;<br /> #include &lt;iostream&gt;<br /> #include &lt;sstream&gt;<br /> #include &lt;string&gt;<br /> <br /> #include &lt;boost/math/tools/minima.hpp&gt;<br /> <br /> double f(double x) { return x * cos(x); }<br /> <br /> int main(int argc, char** argv)<br /> {<br /> typedef std::pair&lt;double, double&gt; Result;<br /> // find a root of the function f in the interval x=[3.0, 4.0] with 20-bit precision<br /> Result r2 = boost::math::tools::brent_find_minima(f, 3.0, 4.0, 20);<br /> std::cout &lt;&lt; &quot;x=&quot; &lt;&lt; r2.first &lt;&lt; &quot; f=&quot; &lt;&lt; r2.second &lt;&lt; std::endl;<br /> return 0;<br /> }<br /> <br /> // output:<br /> // x=3.42562 f=-3.28837<br /> <br /> <br /> /* CMakeLists.txt<br /> cmake_minimum_required(VERSION 2.6)<br /> <br /> Project(brent_test)<br /> <br /> <br /> FIND_PACKAGE(Boost)<br /> <br /> INCLUDE_DIRECTORIES(${INCLUDE_DIRECTORIES} ${Boost_INCLUDE_DIRS})<br /> LINK_DIRECTORIES(${LINK_DIRECTORIES} ${Boost_LIBRARY_DIRS})<br /> <br /> ADD_EXECUTABLE(brent_test main.cpp)<br /> */<br /> &lt;/syntaxhighlight&gt;</div>

Awallin