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<?xml version='1.0'?>
<html xmlns='http://www.w3.org/1999/xhtml'
      xmlns:math='http://www.w3.org/1998/Math/MathML'
>
<head>
<title>to_string: Example and Test</title>
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<center><b><big><big>to_string: Example and Test</big></big></b></center>
<code><font color="blue"><pre><tt>
<span style="font-style: italic"><span style="color: #9A1900">// Examples with fundamental types</span></span>
<span style="font-weight: bold"><span style="color: #000080"># include</span></span> <span style="color: #FF0000">&lt;cppad/utility/to_string.hpp&gt;</span>
<span style="font-weight: bold"><span style="color: #0000FF">namespace</span></span> <span style="color: #FF0000">{</span>
     <span style="font-weight: bold"><span style="color: #0000FF">template</span></span> <span style="color: #990000">&lt;</span><span style="font-weight: bold"><span style="color: #0000FF">class</span></span> <span style="color: #008080">Integer</span><span style="color: #990000">&gt;</span>
     <span style="color: #008080">Integer</span> <span style="font-weight: bold"><span style="color: #000000">string2int</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">const</span></span> std<span style="color: #990000">::</span>string<span style="color: #990000">&amp;</span> s<span style="color: #990000">)</span>
     <span style="color: #FF0000">{</span>     <span style="color: #008080">Integer</span> result <span style="color: #990000">=</span> <span style="color: #993399">0</span><span style="color: #990000">;</span>
          <span style="color: #008080">size_t</span> index   <span style="color: #990000">=</span> <span style="color: #993399">0</span><span style="color: #990000">;</span>
          <span style="font-weight: bold"><span style="color: #0000FF">if</span></span><span style="color: #990000">(</span> s<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]</span> <span style="color: #990000">==</span> <span style="color: #FF0000">'-'</span> <span style="color: #990000">)</span>
               <span style="color: #990000">++</span>index<span style="color: #990000">;</span>
          <span style="font-weight: bold"><span style="color: #0000FF">while</span></span><span style="color: #990000">(</span> index <span style="color: #990000">&lt;</span> s<span style="color: #990000">.</span><span style="font-weight: bold"><span style="color: #000000">size</span></span><span style="color: #990000">()</span> <span style="color: #990000">)</span>
               result <span style="color: #990000">=</span> <span style="color: #993399">10</span> <span style="color: #990000">*</span> result <span style="color: #990000">+</span> <span style="font-weight: bold"><span style="color: #000000">Integer</span></span><span style="color: #990000">(</span> s<span style="color: #990000">[</span>index<span style="color: #990000">++]</span> <span style="color: #990000">-</span> <span style="color: #FF0000">'0'</span><span style="color: #990000">);</span>
          <span style="font-weight: bold"><span style="color: #0000FF">if</span></span><span style="color: #990000">(</span> s<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]</span> <span style="color: #990000">==</span> <span style="color: #FF0000">'-'</span> <span style="color: #990000">)</span>
               <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #990000">-</span> result<span style="color: #990000">;</span>
          <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> result<span style="color: #990000">;</span>
     <span style="color: #FF0000">}</span>
     <span style="font-weight: bold"><span style="color: #0000FF">template</span></span> <span style="color: #990000">&lt;</span><span style="font-weight: bold"><span style="color: #0000FF">class</span></span> <span style="color: #008080">Integer</span><span style="color: #990000">&gt;</span>
     <span style="color: #009900">bool</span> <span style="font-weight: bold"><span style="color: #000000">integer</span></span><span style="color: #990000">(</span><span style="color: #009900">void</span><span style="color: #990000">)</span>
     <span style="color: #FF0000">{</span>     <span style="color: #009900">bool</span> ok <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #0000FF">true</span></span><span style="color: #990000">;</span>
          <span style="font-style: italic"><span style="color: #9A1900">//</span></span>
          <span style="color: #008080">Integer</span> max    <span style="color: #990000">=</span> std<span style="color: #990000">::</span>numeric_limits<span style="color: #990000">&lt;</span>Integer<span style="color: #990000">&gt;::</span><span style="font-weight: bold"><span style="color: #000000">max</span></span><span style="color: #990000">();</span>
          std<span style="color: #990000">::</span><span style="color: #008080">string</span> s  <span style="color: #990000">=</span> CppAD<span style="color: #990000">::</span><span style="font-weight: bold"><span style="color: #000000">to_string</span></span><span style="color: #990000">(</span>max<span style="color: #990000">);</span>
          <span style="color: #008080">Integer</span> check  <span style="color: #990000">=</span> string2int<span style="color: #990000">&lt;</span>Integer<span style="color: #990000">&gt;(</span>s<span style="color: #990000">);</span>
          ok            <span style="color: #990000">&amp;=</span> max <span style="color: #990000">==</span> check<span style="color: #990000">;</span>
          <span style="font-style: italic"><span style="color: #9A1900">//</span></span>
          <span style="color: #008080">Integer</span> min       <span style="color: #990000">=</span> std<span style="color: #990000">::</span>numeric_limits<span style="color: #990000">&lt;</span>Integer<span style="color: #990000">&gt;::</span><span style="font-weight: bold"><span style="color: #000000">min</span></span><span style="color: #990000">();</span>
          s              <span style="color: #990000">=</span> CppAD<span style="color: #990000">::</span><span style="font-weight: bold"><span style="color: #000000">to_string</span></span><span style="color: #990000">(</span>min<span style="color: #990000">);</span>
          check          <span style="color: #990000">=</span> string2int<span style="color: #990000">&lt;</span>Integer<span style="color: #990000">&gt;(</span>s<span style="color: #990000">);</span>
          ok            <span style="color: #990000">&amp;=</span> min <span style="color: #990000">==</span> check<span style="color: #990000">;</span>
          <span style="font-style: italic"><span style="color: #9A1900">//</span></span>
          <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ok<span style="color: #990000">;</span>
     <span style="color: #FF0000">}</span>
     <span style="font-weight: bold"><span style="color: #0000FF">template</span></span> <span style="color: #990000">&lt;</span><span style="font-weight: bold"><span style="color: #0000FF">class</span></span> <span style="color: #008080">Float</span><span style="color: #990000">&gt;</span>
     <span style="color: #009900">bool</span> <span style="font-weight: bold"><span style="color: #000000">floating</span></span><span style="color: #990000">(</span><span style="color: #009900">void</span><span style="color: #990000">)</span>
     <span style="color: #FF0000">{</span>     <span style="color: #009900">bool</span>  ok  <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #0000FF">true</span></span><span style="color: #990000">;</span>
          <span style="color: #008080">Float</span> eps <span style="color: #990000">=</span> std<span style="color: #990000">::</span>numeric_limits<span style="color: #990000">&lt;</span>Float<span style="color: #990000">&gt;::</span><span style="font-weight: bold"><span style="color: #000000">epsilon</span></span><span style="color: #990000">();</span>
          <span style="color: #008080">Float</span> pi  <span style="color: #990000">=</span> <span style="color: #993399">4.0</span> <span style="color: #990000">*</span> std<span style="color: #990000">::</span><span style="font-weight: bold"><span style="color: #000000">atan</span></span><span style="color: #990000">(</span><span style="color: #993399">1</span><span style="color: #990000">.);</span>
          <span style="font-style: italic"><span style="color: #9A1900">//</span></span>
          std<span style="color: #990000">::</span><span style="color: #008080">string</span> s <span style="color: #990000">=</span> CppAD<span style="color: #990000">::</span><span style="font-weight: bold"><span style="color: #000000">to_string</span></span><span style="color: #990000">(</span> pi <span style="color: #990000">);</span>
          <span style="color: #008080">Float</span> check    <span style="color: #990000">=</span> std<span style="color: #990000">::</span><span style="font-weight: bold"><span style="color: #000000">atof</span></span><span style="color: #990000">(</span> s<span style="color: #990000">.</span><span style="font-weight: bold"><span style="color: #000000">c_str</span></span><span style="color: #990000">()</span> <span style="color: #990000">);</span>
          ok           <span style="color: #990000">&amp;=</span> std<span style="color: #990000">::</span><span style="font-weight: bold"><span style="color: #000000">fabs</span></span><span style="color: #990000">(</span> check <span style="color: #990000">-</span> pi <span style="color: #990000">)</span> <span style="color: #990000">&lt;=</span> <span style="color: #993399">2.0</span> <span style="color: #990000">*</span> eps<span style="color: #990000">;</span>
          <span style="font-style: italic"><span style="color: #9A1900">//</span></span>
          <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ok<span style="color: #990000">;</span>
     <span style="color: #FF0000">}</span>
<span style="color: #FF0000">}</span>

<span style="font-style: italic"><span style="color: #9A1900">// Examples with AD types</span></span>
<span style="font-weight: bold"><span style="color: #000080"># include</span></span> <span style="color: #FF0000">&lt;cppad/cppad.hpp&gt;</span>
<span style="font-weight: bold"><span style="color: #0000FF">namespace</span></span> <span style="color: #FF0000">{</span>
     <span style="font-weight: bold"><span style="color: #0000FF">template</span></span> <span style="color: #990000">&lt;</span><span style="font-weight: bold"><span style="color: #0000FF">class</span></span> <span style="color: #008080">Base</span><span style="color: #990000">&gt;</span>
     <span style="color: #009900">bool</span> <span style="font-weight: bold"><span style="color: #000000">ad_floating</span></span><span style="color: #990000">(</span><span style="color: #009900">void</span><span style="color: #990000">)</span>
     <span style="color: #FF0000">{</span>     <span style="color: #009900">bool</span>  ok  <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #0000FF">true</span></span><span style="color: #990000">;</span>
          <span style="color: #008080">Base</span> eps <span style="color: #990000">=</span> std<span style="color: #990000">::</span>numeric_limits<span style="color: #990000">&lt;</span>Base<span style="color: #990000">&gt;::</span><span style="font-weight: bold"><span style="color: #000000">epsilon</span></span><span style="color: #990000">();</span>
          <span style="color: #008080">Base</span> pi  <span style="color: #990000">=</span> <span style="color: #993399">4.0</span> <span style="color: #990000">*</span> std<span style="color: #990000">::</span><span style="font-weight: bold"><span style="color: #000000">atan</span></span><span style="color: #990000">(</span><span style="color: #993399">1</span><span style="color: #990000">.);</span>
          <span style="font-style: italic"><span style="color: #9A1900">//</span></span>
          std<span style="color: #990000">::</span><span style="color: #008080">string</span> s <span style="color: #990000">=</span> CppAD<span style="color: #990000">::</span><span style="font-weight: bold"><span style="color: #000000">to_string</span></span><span style="color: #990000">(</span> CppAD<span style="color: #990000">::</span>AD<span style="color: #990000">&lt;</span>Base<span style="color: #990000">&gt;(</span> pi <span style="color: #990000">)</span> <span style="color: #990000">);</span>
          <span style="color: #008080">Base</span> check    <span style="color: #990000">=</span> std<span style="color: #990000">::</span><span style="font-weight: bold"><span style="color: #000000">atof</span></span><span style="color: #990000">(</span> s<span style="color: #990000">.</span><span style="font-weight: bold"><span style="color: #000000">c_str</span></span><span style="color: #990000">()</span> <span style="color: #990000">);</span>
          ok           <span style="color: #990000">&amp;=</span> std<span style="color: #990000">::</span><span style="font-weight: bold"><span style="color: #000000">fabs</span></span><span style="color: #990000">(</span> check <span style="color: #990000">-</span> pi <span style="color: #990000">)</span> <span style="color: #990000">&lt;=</span> <span style="color: #993399">2.0</span> <span style="color: #990000">*</span> eps<span style="color: #990000">;</span>
          <span style="font-style: italic"><span style="color: #9A1900">//</span></span>
          <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ok<span style="color: #990000">;</span>
     <span style="color: #FF0000">}</span>
<span style="color: #FF0000">}</span>

<span style="font-style: italic"><span style="color: #9A1900">// Test driver</span></span>
<span style="color: #009900">bool</span> <span style="font-weight: bold"><span style="color: #000000">to_string</span></span><span style="color: #990000">(</span><span style="color: #009900">void</span><span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>     <span style="color: #009900">bool</span> ok <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #0000FF">true</span></span><span style="color: #990000">;</span>

     ok <span style="color: #990000">&amp;=</span> integer<span style="color: #990000">&lt;</span><span style="color: #009900">unsigned</span> <span style="color: #009900">short</span><span style="color: #990000">&gt;();</span>
     ok <span style="color: #990000">&amp;=</span> integer<span style="color: #990000">&lt;</span><span style="color: #009900">signed</span> <span style="color: #009900">int</span><span style="color: #990000">&gt;();</span>
     ok <span style="color: #990000">&amp;=</span> integer<span style="color: #990000">&lt;</span><span style="color: #009900">unsigned</span> <span style="color: #009900">long</span><span style="color: #990000">&gt;();</span>
<span style="font-weight: bold"><span style="color: #000080"># if</span></span> CPPAD_USE_CPLUSPLUS_2011
     ok <span style="color: #990000">&amp;=</span> integer<span style="color: #990000">&lt;</span><span style="color: #009900">signed</span> <span style="color: #009900">long</span> <span style="color: #009900">long</span><span style="color: #990000">&gt;();</span>
<span style="font-weight: bold"><span style="color: #000080"># endif</span></span>
     <span style="font-style: italic"><span style="color: #9A1900">//</span></span>
     ok <span style="color: #990000">&amp;=</span> floating<span style="color: #990000">&lt;</span><span style="color: #009900">float</span><span style="color: #990000">&gt;();</span>
     ok <span style="color: #990000">&amp;=</span> floating<span style="color: #990000">&lt;</span><span style="color: #009900">double</span><span style="color: #990000">&gt;();</span>
     ok <span style="color: #990000">&amp;=</span> floating<span style="color: #990000">&lt;</span><span style="color: #009900">long</span> <span style="color: #009900">double</span><span style="color: #990000">&gt;();</span>
     <span style="font-style: italic"><span style="color: #9A1900">//</span></span>
     ok <span style="color: #990000">&amp;=</span> ad_floating<span style="color: #990000">&lt;</span><span style="color: #009900">float</span><span style="color: #990000">&gt;();</span>
     ok <span style="color: #990000">&amp;=</span> ad_floating<span style="color: #990000">&lt;</span><span style="color: #009900">double</span><span style="color: #990000">&gt;();</span>
     <span style="font-style: italic"><span style="color: #9A1900">//</span></span>
     <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ok<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span>
</tt></pre>
</font></code>
<hr/>Input File: example/to_string.cpp

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