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<div id="projectname">Penning Trap Simulation
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<div id="projectbrief">Simulate particle behavior inside a Penning Trap</div>
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<a href="#define-members">Macros</a> &#124;
<a href="#func-members">Functions</a> </div>
<div class="headertitle"><div class="title">utils.hpp File Reference</div></div>
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<p>Function prototypes and macros that are useful.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;armadillo&gt;</code><br />
<code>#include &lt;iomanip&gt;</code><br />
<code>#include &lt;sstream&gt;</code><br />
<code>#include &lt;string&gt;</code><br />
<code>#include &lt;sys/stat.h&gt;</code><br />
<code>#include &lt;vector&gt;</code><br />
</div>
<p><a href="utils_8hpp_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="define-members" name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:aecc1f7a8a2493b9e021e5bff76a00a5b"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="utils_8hpp.html#aecc1f7a8a2493b9e021e5bff76a00a5b">DEBUG</a>(msg)</td></tr>
<tr class="memdesc:aecc1f7a8a2493b9e021e5bff76a00a5b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Writes a debug message. <br /></td></tr>
<tr class="separator:aecc1f7a8a2493b9e021e5bff76a00a5b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a73d4f21ad937dbc50a0c0538c78fd4f9"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="utils_8hpp.html#a73d4f21ad937dbc50a0c0538c78fd4f9">ASSERT</a>(expr, msg)</td></tr>
<tr class="memdesc:a73d4f21ad937dbc50a0c0538c78fd4f9"><td class="mdescLeft">&#160;</td><td class="mdescRight">A prettier assertion function. <br /></td></tr>
<tr class="separator:a73d4f21ad937dbc50a0c0538c78fd4f9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a60dca3177fb9cb5256609adc7af55168"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="utils_8hpp.html#a60dca3177fb9cb5256609adc7af55168">__METHOD_NAME__</a>&#160;&#160;&#160;methodName(__PRETTY_FUNCTION__)</td></tr>
<tr class="memdesc:a60dca3177fb9cb5256609adc7af55168"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the name of the current method/function without the return type. <br /></td></tr>
<tr class="separator:a60dca3177fb9cb5256609adc7af55168"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:adfb618b2fdff47ef30a4a2b62c04f384"><td class="memItemLeft" align="right" valign="top">std::string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="utils_8hpp.html#adfb618b2fdff47ef30a4a2b62c04f384">scientific_format</a> (double d, int width=20, int prec=10)</td></tr>
<tr class="memdesc:adfb618b2fdff47ef30a4a2b62c04f384"><td class="mdescLeft">&#160;</td><td class="mdescRight">Turns a double into a string written in scientific format. <br /></td></tr>
<tr class="separator:adfb618b2fdff47ef30a4a2b62c04f384"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad54b96a1074f9df4dc892a41d115b72d"><td class="memItemLeft" align="right" valign="top">std::string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="utils_8hpp.html#ad54b96a1074f9df4dc892a41d115b72d">scientific_format</a> (const std::vector&lt; double &gt; &amp;v, int width=20, int prec=10)</td></tr>
<tr class="memdesc:ad54b96a1074f9df4dc892a41d115b72d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Turns a vector of doubles into a string written in scientific format. <br /></td></tr>
<tr class="separator:ad54b96a1074f9df4dc892a41d115b72d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2cc3a2cdb635bac3c8b02e89d4d6af38"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="utils_8hpp.html#a2cc3a2cdb635bac3c8b02e89d4d6af38">m_assert</a> (bool expr, std::string expr_str, std::string func, std::string file, int line, std::string msg)</td></tr>
<tr class="memdesc:a2cc3a2cdb635bac3c8b02e89d4d6af38"><td class="mdescLeft">&#160;</td><td class="mdescRight">Test an expression, confirm that test is ok, or abort execution. <br /></td></tr>
<tr class="separator:a2cc3a2cdb635bac3c8b02e89d4d6af38"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab3e0cf669bddc59bd53998490ffb68b9"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="utils_8hpp.html#ab3e0cf669bddc59bd53998490ffb68b9">close_to</a> (arma::vec &amp;a, arma::vec &amp;b, double tol=1e-8)</td></tr>
<tr class="memdesc:ab3e0cf669bddc59bd53998490ffb68b9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Test if two armadillo vectors are close to each other. <br /></td></tr>
<tr class="separator:ab3e0cf669bddc59bd53998490ffb68b9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6fdd7217b750aff5b6295ece7cbdeffa"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="utils_8hpp.html#a6fdd7217b750aff5b6295ece7cbdeffa">mkpath</a> (std::string path, int mode=0777)</td></tr>
<tr class="memdesc:a6fdd7217b750aff5b6295ece7cbdeffa"><td class="mdescLeft">&#160;</td><td class="mdescRight">Make path given. <br /></td></tr>
<tr class="separator:a6fdd7217b750aff5b6295ece7cbdeffa"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Function prototypes and macros that are useful. </p>
<dl class="section author"><dt>Author</dt><dd>Cory Alexander Balaton (coryab) </dd>
<dd>
Janita Ovidie Sandtrøen Willumsen (janitaws)</dd></dl>
<dl class="section version"><dt>Version</dt><dd>1.0</dd></dl>
<p>These utility function are mainly for convenience and aren't directly related to the project.</p>
<dl class="bug"><dt><b><a class="el" href="bug.html#_bug000005">Bug:</a></b></dt><dd>No known bugs </dd></dl>
<p class="definition">Definition in file <a class="el" href="utils_8hpp_source.html">utils.hpp</a>.</p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a id="a60dca3177fb9cb5256609adc7af55168" name="a60dca3177fb9cb5256609adc7af55168"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a60dca3177fb9cb5256609adc7af55168">&#9670;&#160;</a></span>__METHOD_NAME__</h2>
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<td class="memname">#define __METHOD_NAME__&#160;&#160;&#160;methodName(__PRETTY_FUNCTION__)</td>
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<p>Get the name of the current method/function without the return type. </p>
<p class="definition">Definition at line <a class="el" href="utils_8hpp_source.html#l00052">52</a> of file <a class="el" href="utils_8hpp_source.html">utils.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a73d4f21ad937dbc50a0c0538c78fd4f9">&#9670;&#160;</a></span>ASSERT</h2>
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<td class="memname">#define ASSERT</td>
<td>(</td>
<td class="paramtype">&#160;</td>
<td class="paramname">expr, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">&#160;</td>
<td class="paramname">msg&#160;</td>
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<td>)</td>
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<b>Value:</b><div class="fragment"><div class="line"> <a class="code hl_function" href="utils_8hpp.html#a2cc3a2cdb635bac3c8b02e89d4d6af38">m_assert</a>(expr, #expr, <a class="code hl_define" href="utils_8hpp.html#a60dca3177fb9cb5256609adc7af55168">__METHOD_NAME__</a>, __FILE__, \</div>
<div class="line"> __LINE__, msg)</div>
<div class="ttc" id="autils_8hpp_html_a2cc3a2cdb635bac3c8b02e89d4d6af38"><div class="ttname"><a href="utils_8hpp.html#a2cc3a2cdb635bac3c8b02e89d4d6af38">m_assert</a></div><div class="ttdeci">void m_assert(bool expr, std::string expr_str, std::string func, std::string file, int line, std::string msg)</div><div class="ttdoc">Test an expression, confirm that test is ok, or abort execution.</div><div class="ttdef"><b>Definition:</b> <a href="utils_8cpp_source.html#l00041">utils.cpp:41</a></div></div>
<div class="ttc" id="autils_8hpp_html_a60dca3177fb9cb5256609adc7af55168"><div class="ttname"><a href="utils_8hpp.html#a60dca3177fb9cb5256609adc7af55168">__METHOD_NAME__</a></div><div class="ttdeci">#define __METHOD_NAME__</div><div class="ttdoc">Get the name of the current method/function without the return type.</div><div class="ttdef"><b>Definition:</b> <a href="utils_8hpp_source.html#l00052">utils.hpp:52</a></div></div>
</div><!-- fragment -->
<p>A prettier assertion function. </p>
<p>This macro calls the m_assert function which is a more informative assertion function than the regular assert function from cassert. </p>
<p class="definition">Definition at line <a class="el" href="utils_8hpp_source.html#l00046">46</a> of file <a class="el" href="utils_8hpp_source.html">utils.hpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aecc1f7a8a2493b9e021e5bff76a00a5b">&#9670;&#160;</a></span>DEBUG</h2>
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<td class="memname">#define DEBUG</td>
<td>(</td>
<td class="paramtype">&#160;</td>
<td class="paramname">msg</td><td>)</td>
<td></td>
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<p>Writes a debug message. </p>
<p>This macro writes a debug message that includes the filename, line number, and a custom message. The function is wrapped in an ifdef that checks if DBG is defined, so one can choose to display the debug messages by adding the -DDBG flag when compiling. </p>
<p class="definition">Definition at line <a class="el" href="utils_8hpp_source.html#l00037">37</a> of file <a class="el" href="utils_8hpp_source.html">utils.hpp</a>.</p>
</div>
</div>
<h2 class="groupheader">Function Documentation</h2>
<a id="ab3e0cf669bddc59bd53998490ffb68b9" name="ab3e0cf669bddc59bd53998490ffb68b9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab3e0cf669bddc59bd53998490ffb68b9">&#9670;&#160;</a></span>close_to()</h2>
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<td class="memname">bool close_to </td>
<td>(</td>
<td class="paramtype">arma::vec &amp;&#160;</td>
<td class="paramname"><em>a</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
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<td class="paramtype">arma::vec &amp;&#160;</td>
<td class="paramname"><em>b</em>, </td>
</tr>
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<td></td>
<td class="paramtype">double&#160;</td>
<td class="paramname"><em>tol</em> = <code>1e-8</code>&#160;</td>
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<td></td>
<td>)</td>
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<p>Test if two armadillo vectors are close to each other. </p>
<p>This function takes in 2 vectors and checks if they are approximately equal to each other given a tolerance.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>Vector a </td></tr>
<tr><td class="paramname">b</td><td>Vector b </td></tr>
<tr><td class="paramname">tol</td><td>The tolerance</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>bool </dd></dl>
<p class="definition">Definition at line <a class="el" href="utils_8cpp_source.html#l00060">60</a> of file <a class="el" href="utils_8cpp_source.html">utils.cpp</a>.</p>
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<a id="a2cc3a2cdb635bac3c8b02e89d4d6af38" name="a2cc3a2cdb635bac3c8b02e89d4d6af38"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2cc3a2cdb635bac3c8b02e89d4d6af38">&#9670;&#160;</a></span>m_assert()</h2>
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<td class="memname">void m_assert </td>
<td>(</td>
<td class="paramtype">bool&#160;</td>
<td class="paramname"><em>expr</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">std::string&#160;</td>
<td class="paramname"><em>expr_str</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">std::string&#160;</td>
<td class="paramname"><em>func</em>, </td>
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<td></td>
<td class="paramtype">std::string&#160;</td>
<td class="paramname"><em>file</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>line</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">std::string&#160;</td>
<td class="paramname"><em>msg</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
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<p>Test an expression, confirm that test is ok, or abort execution. </p>
<p>This function takes in an expression and prints an OK message if it's true, or it prints a fail message and aborts execution if it fails.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">expr</td><td>The expression to be evaluated </td></tr>
<tr><td class="paramname">expr_str</td><td>The stringified version of the expression </td></tr>
<tr><td class="paramname">func</td><td>The function name of the caller </td></tr>
<tr><td class="paramname">file</td><td>The file of the caller </td></tr>
<tr><td class="paramname">line</td><td>The line number where this function is called from </td></tr>
<tr><td class="paramname">msg</td><td>The message to be displayed </td></tr>
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</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="utils_8cpp_source.html#l00041">41</a> of file <a class="el" href="utils_8cpp_source.html">utils.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a6fdd7217b750aff5b6295ece7cbdeffa">&#9670;&#160;</a></span>mkpath()</h2>
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<td class="memname">bool mkpath </td>
<td>(</td>
<td class="paramtype">std::string&#160;</td>
<td class="paramname"><em>path</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">int&#160;</td>
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<td>)</td>
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<p>Make path given. </p>
<p>This tries to be the equivalent to "mkdir -p" and creates a new directory whenever it needs to.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">path</td><td>The path to be created </td></tr>
<tr><td class="paramname">mode</td><td>The mode/permissions for all the new directories</td></tr>
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</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>bool Success/Fail </dd></dl>
<p class="definition">Definition at line <a class="el" href="utils_8cpp_source.html#l00074">74</a> of file <a class="el" href="utils_8cpp_source.html">utils.cpp</a>.</p>
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<td class="memname">std::string scientific_format </td>
<td>(</td>
<td class="paramtype">const std::vector&lt; double &gt; &amp;&#160;</td>
<td class="paramname"><em>v</em>, </td>
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<td class="paramtype">int&#160;</td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>prec</em> = <code>10</code>&#160;</td>
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<p>Turns a vector of doubles into a string written in scientific format. </p>
<p>The code is stolen from <a href="https://github.com/anderkve/FYS3150">https://github.com/anderkve/FYS3150</a>.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">v</td><td>The vector to stringify </td></tr>
<tr><td class="paramname">width</td><td>The reserved width of the string </td></tr>
<tr><td class="paramname">prec</td><td>The precision of the stringified number</td></tr>
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</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>std::string </dd></dl>
<p class="definition">Definition at line <a class="el" href="utils_8cpp_source.html#l00022">22</a> of file <a class="el" href="utils_8cpp_source.html">utils.cpp</a>.</p>
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<a id="adfb618b2fdff47ef30a4a2b62c04f384" name="adfb618b2fdff47ef30a4a2b62c04f384"></a>
<h2 class="memtitle"><span class="permalink"><a href="#adfb618b2fdff47ef30a4a2b62c04f384">&#9670;&#160;</a></span>scientific_format() <span class="overload">[2/2]</span></h2>
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<td class="memname">std::string scientific_format </td>
<td>(</td>
<td class="paramtype">double&#160;</td>
<td class="paramname"><em>d</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>width</em> = <code>20</code>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int&#160;</td>
<td class="paramname"><em>prec</em> = <code>10</code>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Turns a double into a string written in scientific format. </p>
<p>The code is stolen from <a href="https://github.com/anderkve/FYS3150">https://github.com/anderkve/FYS3150</a>.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">d</td><td>The number to stringify </td></tr>
<tr><td class="paramname">width</td><td>The reserved width of the string </td></tr>
<tr><td class="paramname">prec</td><td>The precision of the stringified number</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>std::string </dd></dl>
<p class="definition">Definition at line <a class="el" href="utils_8cpp_source.html#l00015">15</a> of file <a class="el" href="utils_8cpp_source.html">utils.cpp</a>.</p>
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