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<li class="navelem"><a class="el" href="dir_df9c78dcf3f59a33b12284f95992a64b.html">ripple</a></li><li class="navelem"><a class="el" href="dir_1e765e6a8d5970800a535eb2615ec474.html">protocol</a></li> </ul>
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<div class="title">Quality.h</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//------------------------------------------------------------------------------</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">/*</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> This file is part of rippled: https://github.com/ripple/rippled</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> Copyright (c) 2012, 2013 Ripple Labs Inc.</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"></span> </div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> Permission to use, copy, modify, and/or distribute this software for any</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> purpose with or without fee is hereby granted, provided that the above</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> copyright notice and this permission notice appear in all copies.</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span> </div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">*/</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">//==============================================================================</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  </div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#ifndef RIPPLE_PROTOCOL_QUALITY_H_INCLUDED</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#define RIPPLE_PROTOCOL_QUALITY_H_INCLUDED</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <ripple/basics/IOUAmount.h></span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <ripple/basics/XRPAmount.h></span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <ripple/protocol/AmountConversions.h></span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <ripple/protocol/STAmount.h></span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  </div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/algorithm.html">algorithm</a>></span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/cstdint.html">cstdint</a>></span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/ostream.html">ostream</a>></span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  </div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  </div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">template</span> <<span class="keyword">class</span> In, <span class="keyword">class</span> Out></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">struct </span>TAmounts</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> {</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  TAmounts() = <span class="keywordflow">default</span>;</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  </div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  TAmounts(<a class="code" href="structbeast_1_1Zero.html">beast::Zero</a>, <a class="code" href="structbeast_1_1Zero.html">beast::Zero</a>) : <a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569feda13b5bfe96f3e2fe411c9f66f4a582adf">in</a>(<a class="code" href="namespacebeast.html">beast</a>::zero), <a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569fedac68271a63ddbc431c307beb7d2918275">out</a>(<a class="code" href="namespacebeast.html">beast</a>::zero)</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  {</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  }</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  </div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  TAmounts(In <span class="keyword">const</span>& in_, Out <span class="keyword">const</span>& out_) : <a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569feda13b5bfe96f3e2fe411c9f66f4a582adf">in</a>(in_), <a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569fedac68271a63ddbc431c307beb7d2918275">out</a>(out_)</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  {</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  }</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  </div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordtype">bool</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/iterator/empty.html">empty</a>() const noexcept</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  {</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569feda13b5bfe96f3e2fe411c9f66f4a582adf">in</a> <= beast::zero || <a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569fedac68271a63ddbc431c307beb7d2918275">out</a> <= beast::zero;</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  </div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  TAmounts&</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  operator+=(TAmounts <span class="keyword">const</span>& rhs)</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  {</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569feda13b5bfe96f3e2fe411c9f66f4a582adf">in</a> += rhs.in;</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569fedac68271a63ddbc431c307beb7d2918275">out</a> += rhs.out;</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  }</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  </div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  TAmounts&</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  operator-=(TAmounts <span class="keyword">const</span>& rhs)</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  {</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569feda13b5bfe96f3e2fe411c9f66f4a582adf">in</a> -= rhs.in;</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569fedac68271a63ddbc431c307beb7d2918275">out</a> -= rhs.out;</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  }</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  </div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  In <a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569feda13b5bfe96f3e2fe411c9f66f4a582adf">in</a>;</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  Out <a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569fedac68271a63ddbc431c307beb7d2918275">out</a>;</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> };</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  </div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="keyword">using</span> Amounts = TAmounts<STAmount, STAmount>;</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  </div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="keyword">template</span> <<span class="keyword">class</span> In, <span class="keyword">class</span> Out></div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="keywordtype">bool</span></div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <a class="code" href="namespaceripple.html#a4a7f562868748b9246dbcab39091021c">operator==</a>(TAmounts<In, Out> <span class="keyword">const</span>& lhs, TAmounts<In, Out> <span class="keyword">const</span>& rhs) noexcept</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> {</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">return</span> lhs.in == rhs.in && lhs.out == rhs.out;</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> }</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  </div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">template</span> <<span class="keyword">class</span> In, <span class="keyword">class</span> Out></div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="keywordtype">bool</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <a class="code" href="namespaceripple.html#a068a05c4d658a764ce2be1810e1779fd">operator!=</a>(TAmounts<In, Out> <span class="keyword">const</span>& lhs, TAmounts<In, Out> <span class="keyword">const</span>& rhs) noexcept</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> {</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">return</span> !(lhs == rhs);</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> }</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  </div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment">//------------------------------------------------------------------------------</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  </div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment">// Ripple specific constant used for parsing qualities and other things</span></div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="preprocessor">#define QUALITY_ONE 1'000'000'000</span></div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  </div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="keyword">class </span>Quality</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> {</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// Type of the internal representation. Higher qualities</span></div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment">// have lower unsigned integer representations.</span></div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">using</span> value_type = <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a>;</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  </div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> minTickSize = 3;</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> maxTickSize = 16;</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  </div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment">// This has the same representation as STAmount, see the comment on the</span></div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="comment">// STAmount. However, this class does not alway use the canonical</span></div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="comment">// representation. In particular, the increment and decrement operators may</span></div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="comment">// cause a non-canonical representation.</span></div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  value_type m_value;</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  </div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  Quality() = <span class="keywordflow">default</span>;</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">explicit</span> Quality(<a class="codeRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a> value);</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  </div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keyword">explicit</span> Quality(Amounts <span class="keyword">const</span>& amount);</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  </div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keyword">template</span> <<span class="keyword">class</span> In, <span class="keyword">class</span> Out></div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  Quality(Out <span class="keyword">const</span>& out, In <span class="keyword">const</span>& in)</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  : Quality(Amounts(<a class="code" href="namespaceripple.html#a4ad5ac9da897292a28eea43d041c15a1">toSTAmount</a>(<a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569feda13b5bfe96f3e2fe411c9f66f4a582adf">in</a>), <a class="code" href="namespaceripple.html#a4ad5ac9da897292a28eea43d041c15a1">toSTAmount</a>(<a class="code" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569fedac68271a63ddbc431c307beb7d2918275">out</a>)))</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  {</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  }</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  </div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  Quality&</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  operator++();</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  </div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  Quality</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  operator++(<span class="keywordtype">int</span>);</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  Quality&</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  operator--();</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  </div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  Quality</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  operator--(<span class="keywordtype">int</span>);</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  STAmount</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <a class="code" href="namespaceripple_1_1test_1_1jtx.html#a8e8d814b8820ce0b6979abde0d6a2618">rate</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="keyword"> </span>{</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple.html#a4afbbae0910419307600d5545004e5be">amountFromQuality</a>(m_value);</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  }</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  </div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  Quality</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/numeric/math/round.html">round</a>(<span class="keywordtype">int</span> tickSize) <span class="keyword">const</span>;</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  </div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  Amounts</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  ceil_in(Amounts <span class="keyword">const</span>& amount, STAmount <span class="keyword">const</span>& limit) <span class="keyword">const</span>;</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  </div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keyword">template</span> <<span class="keyword">class</span> In, <span class="keyword">class</span> Out></div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  TAmounts<In, Out></div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  ceil_in(TAmounts<In, Out> <span class="keyword">const</span>& amount, In <span class="keyword">const</span>& limit)<span class="keyword"> const</span></div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="keyword"> </span>{</div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">if</span> (amount.in <= limit)</div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordflow">return</span> amount;</div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  </div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="comment">// Use the existing STAmount implementation for now, but consider</span></div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="comment">// replacing with code specific to IOUAMount and XRPAmount</span></div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  Amounts stAmt(<a class="code" href="namespaceripple.html#a4ad5ac9da897292a28eea43d041c15a1">toSTAmount</a>(amount.in), <a class="code" href="namespaceripple.html#a4ad5ac9da897292a28eea43d041c15a1">toSTAmount</a>(amount.out));</div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  STAmount stLim(<a class="code" href="namespaceripple.html#a4ad5ac9da897292a28eea43d041c15a1">toSTAmount</a>(limit));</div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keyword">auto</span> <span class="keyword">const</span> stRes = ceil_in(stAmt, stLim);</div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">return</span> TAmounts<In, Out>(</div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  toAmount<In>(stRes.in), toAmount<Out>(stRes.out));</div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  }</div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  </div>
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<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  Amounts</div>
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  ceil_out(Amounts <span class="keyword">const</span>& amount, STAmount <span class="keyword">const</span>& limit) <span class="keyword">const</span>;</div>
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<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  </div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keyword">template</span> <<span class="keyword">class</span> In, <span class="keyword">class</span> Out></div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  TAmounts<In, Out></div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  ceil_out(TAmounts<In, Out> <span class="keyword">const</span>& amount, Out <span class="keyword">const</span>& limit)<span class="keyword"> const</span></div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="keyword"> </span>{</div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">if</span> (amount.out <= limit)</div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keywordflow">return</span> amount;</div>
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  </div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="comment">// Use the existing STAmount implementation for now, but consider</span></div>
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="comment">// replacing with code specific to IOUAMount and XRPAmount</span></div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  Amounts stAmt(<a class="code" href="namespaceripple.html#a4ad5ac9da897292a28eea43d041c15a1">toSTAmount</a>(amount.in), <a class="code" href="namespaceripple.html#a4ad5ac9da897292a28eea43d041c15a1">toSTAmount</a>(amount.out));</div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  STAmount stLim(<a class="code" href="namespaceripple.html#a4ad5ac9da897292a28eea43d041c15a1">toSTAmount</a>(limit));</div>
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keyword">auto</span> <span class="keyword">const</span> stRes = ceil_out(stAmt, stLim);</div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">return</span> TAmounts<In, Out>(</div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  toAmount<In>(stRes.in), toAmount<Out>(stRes.out));</div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  }</div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  </div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span></div>
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<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <a class="code" href="namespaceripple.html#ae7f0e432d5fa980cfc588654bb6c77d7">operator<</a>(Quality <span class="keyword">const</span>& lhs, Quality <span class="keyword">const</span>& rhs) noexcept</div>
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<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  {</div>
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<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">return</span> lhs.m_value > rhs.m_value;</div>
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<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  }</div>
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<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  </div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span></div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <a class="code" href="namespaceripple.html#a652dadd7557acb11ab0b0118ac17a43a">operator></a>(Quality <span class="keyword">const</span>& lhs, Quality <span class="keyword">const</span>& rhs) noexcept</div>
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  {</div>
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">return</span> lhs.m_value < rhs.m_value;</div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  }</div>
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<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  </div>
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span></div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <a class="code" href="namespaceripple.html#af55c9644f3da59e843bad94388803eb2">operator<=</a>(Quality <span class="keyword">const</span>& lhs, Quality <span class="keyword">const</span>& rhs) noexcept</div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  {</div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">return</span> !(lhs > rhs);</div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  }</div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  </div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span></div>
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<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <a class="code" href="namespaceripple.html#a2f44766697956309a8ace0ebfff5391b">operator>=</a>(Quality <span class="keyword">const</span>& lhs, Quality <span class="keyword">const</span>& rhs) noexcept</div>
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  {</div>
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordflow">return</span> !(lhs < rhs);</div>
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  }</div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  </div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span></div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <a class="code" href="namespaceripple.html#a4a7f562868748b9246dbcab39091021c">operator==</a>(Quality <span class="keyword">const</span>& lhs, Quality <span class="keyword">const</span>& rhs) noexcept</div>
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  {</div>
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">return</span> lhs.m_value == rhs.m_value;</div>
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<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  }</div>
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  </div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keyword">friend</span> <span class="keywordtype">bool</span></div>
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <a class="code" href="namespaceripple.html#a068a05c4d658a764ce2be1810e1779fd">operator!=</a>(Quality <span class="keyword">const</span>& lhs, Quality <span class="keyword">const</span>& rhs) noexcept</div>
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<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  {</div>
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<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keywordflow">return</span> !(lhs == rhs);</div>
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<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  }</div>
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<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  </div>
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<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="keyword">friend</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::ostream</a>&</div>
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<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <a class="code" href="namespaceripple.html#ad2cbc273400d06e5ff80501de15410e3">operator<<</a>(<a class="codeRef" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::ostream</a>& os, Quality <span class="keyword">const</span>& quality)</div>
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<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  {</div>
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<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  os << <a class="code" href="namespaceripple_1_1keylet.html#a521be311ed98c7c94eeff3441e6bf85f">quality</a>.m_value;</div>
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<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keywordflow">return</span> os;</div>
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<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  }</div>
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<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  </div>
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<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="comment">// return the relative distance (relative error) between two qualities. This</span></div>
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<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="comment">// is used for testing only. relative distance is abs(a-b)/min(a,b)</span></div>
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<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keyword">friend</span> <span class="keywordtype">double</span></div>
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<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  relativeDistance(Quality <span class="keyword">const</span>& q1, Quality <span class="keyword">const</span>& q2)</div>
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<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  {</div>
|
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<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  assert(q1.m_value > 0 && q2.m_value > 0);</div>
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<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  </div>
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<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keywordflow">if</span> (q1.m_value == q2.m_value) <span class="comment">// make expected common case fast</span></div>
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<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  </div>
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<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keyword">auto</span> <span class="keyword">const</span> [minV, maxV] = <a class="codeRef" href="http://en.cppreference.com/w/cpp/algorithm/minmax.html">std::minmax</a>(q1.m_value, q2.m_value);</div>
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<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  </div>
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<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="keyword">auto</span> mantissa = [](<a class="codeRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a> <a class="code" href="namespaceripple_1_1test_1_1jtx.html#a8e8d814b8820ce0b6979abde0d6a2618">rate</a>) {</div>
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|
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceripple_1_1test_1_1jtx.html#a8e8d814b8820ce0b6979abde0d6a2618">rate</a> & ~(255ull << (64 - 8));</div>
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<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  };</div>
|
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<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="keyword">auto</span> exponent = [](<a class="codeRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a> <a class="code" href="namespaceripple_1_1test_1_1jtx.html#a8e8d814b8820ce0b6979abde0d6a2618">rate</a>) {</div>
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<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(<a class="code" href="namespaceripple_1_1test_1_1jtx.html#a8e8d814b8820ce0b6979abde0d6a2618">rate</a> >> (64 - 8)) - 100;</div>
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<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  };</div>
|
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<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  </div>
|
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<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keyword">auto</span> <span class="keyword">const</span> minVMantissa = mantissa(minV);</div>
|
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<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keyword">auto</span> <span class="keyword">const</span> maxVMantissa = mantissa(maxV);</div>
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<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keyword">auto</span> <span class="keyword">const</span> expDiff = exponent(maxV) - exponent(minV);</div>
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<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  </div>
|
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<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="keywordtype">double</span> <span class="keyword">const</span> minVD = <span class="keyword">static_cast<</span><span class="keywordtype">double</span><span class="keyword">></span>(minVMantissa);</div>
|
|
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keywordtype">double</span> <span class="keyword">const</span> maxVD = expDiff ? maxVMantissa * <a class="codeRef" href="http://en.cppreference.com/w/cpp/numeric/math/pow.html">pow</a>(10, expDiff)</div>
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|
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  : static_cast<double>(maxVMantissa);</div>
|
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<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  </div>
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<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="comment">// maxVD and minVD are scaled so they have the same exponents. Dividing</span></div>
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<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="comment">// cancels out the exponents, so we only need to deal with the (scaled)</span></div>
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<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="comment">// mantissas</span></div>
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<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="keywordflow">return</span> (maxVD - minVD) / minVD;</div>
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<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  }</div>
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<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> };</div>
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<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  </div>
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<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> Quality</div>
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<div class="line"><a name="l00305"></a><span class="lineno"> 305</span> <a class="code" href="namespaceripple.html#a7c8945b5034bba5f9df719cff2503495">composed_quality</a>(Quality <span class="keyword">const</span>& lhs, Quality <span class="keyword">const</span>& rhs);</div>
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<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  </div>
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<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> } <span class="comment">// namespace ripple</span></div>
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<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  </div>
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<div class="line"><a name="l00309"></a><span class="lineno"> 309</span> <span class="preprocessor">#endif</span></div>
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</div><!-- fragment --></div><!-- contents -->
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<div class="ttc" id="anamespaceripple_html_a652dadd7557acb11ab0b0118ac17a43a"><div class="ttname"><a href="namespaceripple.html#a652dadd7557acb11ab0b0118ac17a43a">ripple::operator></a></div><div class="ttdeci">bool operator>(base_uint< Bits, Tag > const &a, base_uint< Bits, Tag > const &b)</div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00492">base_uint.h:492</a></div></div>
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<div class="ttc" id="anamespaceripple_html_a7c8945b5034bba5f9df719cff2503495"><div class="ttname"><a href="namespaceripple.html#a7c8945b5034bba5f9df719cff2503495">ripple::composed_quality</a></div><div class="ttdeci">Quality composed_quality(Quality const &lhs, Quality const &rhs)</div><div class="ttdef"><b>Definition:</b> <a href="Quality_8cpp_source.html#l00101">Quality.cpp:101</a></div></div>
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<div class="ttc" id="anamespaceripple_html_a2f44766697956309a8ace0ebfff5391b"><div class="ttname"><a href="namespaceripple.html#a2f44766697956309a8ace0ebfff5391b">ripple::operator>=</a></div><div class="ttdeci">bool operator>=(base_uint< Bits, Tag > const &a, base_uint< Bits, Tag > const &b)</div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00499">base_uint.h:499</a></div></div>
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<div class="ttc" id="anamespaceripple_html_a7cc64e12723fbc9606d85442a2569feda13b5bfe96f3e2fe411c9f66f4a582adf"><div class="ttname"><a href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569feda13b5bfe96f3e2fe411c9f66f4a582adf">ripple::QualityDirection::in</a></div><div class="ttdeci">@ in</div></div>
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<div class="ttc" id="anamespaceripple_html_ad2cbc273400d06e5ff80501de15410e3"><div class="ttname"><a href="namespaceripple.html#ad2cbc273400d06e5ff80501de15410e3">ripple::operator<<</a></div><div class="ttdeci">std::ostream & operator<<(std::ostream &os, TOffer< TIn, TOut > const &offer)</div><div class="ttdef"><b>Definition:</b> <a href="Offer_8h_source.html#l00242">Offer.h:242</a></div></div>
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<div class="ttc" id="aalgorithm_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/algorithm.html">algorithm</a></div></div>
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<div class="ttc" id="anamespaceripple_html_af55c9644f3da59e843bad94388803eb2"><div class="ttname"><a href="namespaceripple.html#af55c9644f3da59e843bad94388803eb2">ripple::operator<=</a></div><div class="ttdeci">bool operator<=(base_uint< Bits, Tag > const &a, base_uint< Bits, Tag > const &b)</div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00485">base_uint.h:485</a></div></div>
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<div class="ttc" id="anamespaceripple_html_a7cc64e12723fbc9606d85442a2569fedac68271a63ddbc431c307beb7d2918275"><div class="ttname"><a href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569fedac68271a63ddbc431c307beb7d2918275">ripple::QualityDirection::out</a></div><div class="ttdeci">@ out</div></div>
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<div class="ttc" id="anamespaceripple_html_ae7f0e432d5fa980cfc588654bb6c77d7"><div class="ttname"><a href="namespaceripple.html#ae7f0e432d5fa980cfc588654bb6c77d7">ripple::operator<</a></div><div class="ttdeci">bool operator<(CanonicalTXSet::Key const &lhs, CanonicalTXSet::Key const &rhs)</div><div class="ttdef"><b>Definition:</b> <a href="CanonicalTXSet_8cpp_source.html#l00025">CanonicalTXSet.cpp:25</a></div></div>
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<div class="ttc" id="abasic_ostream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::ostream</a></div><div class="ttdoc">STL class.</div></div>
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<div class="ttc" id="aminmax_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/algorithm/minmax.html">std::minmax</a></div><div class="ttdeci">T minmax(T... args)</div></div>
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<div class="ttc" id="anamespaceripple_html_a4ad5ac9da897292a28eea43d041c15a1"><div class="ttname"><a href="namespaceripple.html#a4ad5ac9da897292a28eea43d041c15a1">ripple::toSTAmount</a></div><div class="ttdeci">STAmount toSTAmount(IOUAmount const &iou, Issue const &iss)</div><div class="ttdef"><b>Definition:</b> <a href="AmountConversions_8h_source.html#l00030">AmountConversions.h:30</a></div></div>
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<div class="ttc" id="anamespaceripple_html_a068a05c4d658a764ce2be1810e1779fd"><div class="ttname"><a href="namespaceripple.html#a068a05c4d658a764ce2be1810e1779fd">ripple::operator!=</a></div><div class="ttdeci">bool operator!=(Manifest const &lhs, Manifest const &rhs)</div><div class="ttdef"><b>Definition:</b> <a href="Manifest_8h_source.html#l00165">Manifest.h:165</a></div></div>
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<div class="ttc" id="astructbeast_1_1Zero_html"><div class="ttname"><a href="structbeast_1_1Zero.html">beast::Zero</a></div><div class="ttdoc">Zero allows classes to offer efficient comparisons to zero.</div><div class="ttdef"><b>Definition:</b> <a href="Zero_8h_source.html#l00042">Zero.h:42</a></div></div>
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<div class="ttc" id="acstdint_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/cstdint.html">cstdint</a></div></div>
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<div class="ttc" id="ainteger_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a></div></div>
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<div class="ttc" id="anamespaceripple_html"><div class="ttname"><a href="namespaceripple.html">ripple</a></div><div class="ttdoc">Use hash_* containers for keys that do not need a cryptographically secure hashing algorithm.</div><div class="ttdef"><b>Definition:</b> <a href="RCLCensorshipDetector_8h_source.html#l00029">RCLCensorshipDetector.h:29</a></div></div>
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<div class="ttc" id="around_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/math/round.html">std::round</a></div><div class="ttdeci">T round(T... args)</div></div>
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<div class="ttc" id="aempty_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/iterator/empty.html">std::empty</a></div><div class="ttdeci">T empty(T... args)</div></div>
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<div class="ttc" id="anamespaceripple_1_1keylet_html_a521be311ed98c7c94eeff3441e6bf85f"><div class="ttname"><a href="namespaceripple_1_1keylet.html#a521be311ed98c7c94eeff3441e6bf85f">ripple::keylet::quality</a></div><div class="ttdeci">Keylet quality(Keylet const &k, std::uint64_t q) noexcept</div><div class="ttdoc">The initial directory page for a specific quality.</div><div class="ttdef"><b>Definition:</b> <a href="Indexes_8cpp_source.html#l00229">Indexes.cpp:229</a></div></div>
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<div class="ttc" id="aostream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/ostream.html">ostream</a></div></div>
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<div class="ttc" id="anamespaceripple_1_1test_1_1jtx_html_a8e8d814b8820ce0b6979abde0d6a2618"><div class="ttname"><a href="namespaceripple_1_1test_1_1jtx.html#a8e8d814b8820ce0b6979abde0d6a2618">ripple::test::jtx::rate</a></div><div class="ttdeci">Json::Value rate(Account const &account, double multiplier)</div><div class="ttdoc">Set a transfer rate.</div><div class="ttdef"><b>Definition:</b> <a href="rate_8cpp_source.html#l00030">rate.cpp:30</a></div></div>
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<div class="ttc" id="apow_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/math/pow.html">std::pow</a></div><div class="ttdeci">T pow(T... args)</div></div>
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<div class="ttc" id="anamespacebeast_html"><div class="ttname"><a href="namespacebeast.html">beast</a></div><div class="ttdef"><b>Definition:</b> <a href="base__uint_8h_source.html#l00585">base_uint.h:585</a></div></div>
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