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<li class="navelem"><a class="el" href="dir_90ffdbabf412cfdffe6b2193e0ce938a.html">libxrpl</a></li><li class="navelem"><a class="el" href="dir_4cb643486f27a568a0d40f174f670f35.html">protocol</a></li> </ul>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">//------------------------------------------------------------------------------</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">/*</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> This file is part of rippled: https://github.com/ripple/rippled</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> Copyright (c) 2012, 2013 Ripple Labs Inc.</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"></span> </div>
<div class="line"><a id="l00006" 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>
<div class="line"><a id="l00007" 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>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> copyright notice and this permission notice appear in all copies.</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"></span> </div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> THE SOFTWARE IS PROVIDED &quot;AS IS&quot; AND THE AUTHOR DISCLAIMS ALL WARRANTIES</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF</span></div>
<div class="line"><a id="l00012" 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>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="comment"> ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES</span></div>
<div class="line"><a id="l00014" 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>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="comment"> ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment">*/</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment">//==============================================================================</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include &lt;xrpl/beast/utility/Zero.h&gt;</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include &lt;xrpl/beast/utility/instrumentation.h&gt;</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include &lt;xrpl/protocol/Asset.h&gt;</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include &lt;xrpl/protocol/Quality.h&gt;</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include &lt;xrpl/protocol/STAmount.h&gt;</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/cstdint.html">cstdint</a>&gt;</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/limits.html">limits</a>&gt;</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span>Quality::Quality(<a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a> value) : m_value(value)</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span>{</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span>}</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span>Quality::Quality(Amounts <span class="keyword">const</span>&amp; amount)</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> : m_value(<a class="code hl_function" href="namespaceripple.html#a73cc988e7ba5d5ee0fd9db53740917ec">getRate</a>(amount.<a class="code hl_enumvalue" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569fedac68271a63ddbc431c307beb7d2918275">out</a>, amount.<a class="code hl_enumvalue" href="namespaceripple.html#a7cc64e12723fbc9606d85442a2569feda13b5bfe96f3e2fe411c9f66f4a582adf">in</a>))</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span>{</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span>}</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span>Quality&amp;</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span>Quality::operator++()</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span>{</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> XRPL_ASSERT(m_value &gt; 0, <span class="stringliteral">&quot;ripple::Quality::operator++() : minimum value&quot;</span>);</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> --m_value;</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span>}</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span>Quality</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span>Quality::operator++(<span class="keywordtype">int</span>)</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span>{</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> Quality <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/iterator/prev.html">prev</a>(*<span class="keyword">this</span>);</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> ++*<span class="keyword">this</span>;</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="keywordflow">return</span> <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/iterator/prev.html">prev</a>;</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span>}</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span>Quality&amp;</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span>Quality::operator--()</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span>{</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> XRPL_ASSERT(</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> m_value &lt; <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/numeric_limits.html">std::numeric_limits&lt;value_type&gt;::max</a>(),</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="stringliteral">&quot;ripple::Quality::operator--() : maximum value&quot;</span>);</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> ++m_value;</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span>}</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span>Quality</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span>Quality::operator--(<span class="keywordtype">int</span>)</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span>{</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> Quality <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/iterator/prev.html">prev</a>(*<span class="keyword">this</span>);</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> --*<span class="keyword">this</span>;</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="keywordflow">return</span> <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/iterator/prev.html">prev</a>;</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span>}</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="keyword">template</span> &lt;STAmount (</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> *DivRoundFunc)(STAmount <span class="keyword">const</span>&amp;, STAmount <span class="keyword">const</span>&amp;, Asset <span class="keyword">const</span>&amp;, bool)&gt;</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span><span class="keyword">static</span> Amounts</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"><a class="line" href="namespaceripple.html#a79851514ea1f4586c92d04124c762dde"> 77</a></span><a class="code hl_function" href="namespaceripple.html#a79851514ea1f4586c92d04124c762dde">ceil_in_impl</a>(</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> Amounts <span class="keyword">const</span>&amp; amount,</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a> <span class="keyword">const</span>&amp; limit,</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <span class="keywordtype">bool</span> roundUp,</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> Quality <span class="keyword">const</span>&amp; quality)</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span>{</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keywordflow">if</span> (amount.in &gt; limit)</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> {</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> Amounts result(</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> limit,</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> DivRoundFunc(limit, quality.rate(), amount.out.asset(), roundUp));</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="comment">// Clamp out</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keywordflow">if</span> (result.out &gt; amount.out)</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> result.out = amount.out;</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> XRPL_ASSERT(</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> result.in == limit, <span class="stringliteral">&quot;ripple::ceil_in_impl : result matches limit&quot;</span>);</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="keywordflow">return</span> result;</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> }</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> XRPL_ASSERT(</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> amount.in &lt;= limit, <span class="stringliteral">&quot;ripple::ceil_in_impl : result inside limit&quot;</span>);</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keywordflow">return</span> amount;</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span>}</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span>Amounts</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span>Quality::ceil_in(Amounts <span class="keyword">const</span>&amp; amount, STAmount <span class="keyword">const</span>&amp; limit)<span class="keyword"> const</span></div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span><span class="keyword"></span>{</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="keywordflow">return</span> ceil_in_impl&lt;divRound&gt;(amount, limit, <span class="comment">/* roundUp */</span> <span class="keyword">true</span>, *<span class="keyword">this</span>);</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span>}</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> </div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span>Amounts</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span>Quality::ceil_in_strict(</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> Amounts <span class="keyword">const</span>&amp; amount,</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> STAmount <span class="keyword">const</span>&amp; limit,</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="keywordtype">bool</span> roundUp)<span class="keyword"> const</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span><span class="keyword"></span>{</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="keywordflow">return</span> ceil_in_impl&lt;divRoundStrict&gt;(amount, limit, roundUp, *<span class="keyword">this</span>);</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span>}</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span><span class="keyword">template</span> &lt;STAmount (</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> *MulRoundFunc)(STAmount <span class="keyword">const</span>&amp;, STAmount <span class="keyword">const</span>&amp;, Asset <span class="keyword">const</span>&amp;, bool)&gt;</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span><span class="keyword">static</span> Amounts</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"><a class="line" href="namespaceripple.html#a00a9bb5ffdc23b323ac5c9382eee534c"> 118</a></span><a class="code hl_function" href="namespaceripple.html#a00a9bb5ffdc23b323ac5c9382eee534c">ceil_out_impl</a>(</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> Amounts <span class="keyword">const</span>&amp; amount,</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a> <span class="keyword">const</span>&amp; limit,</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="keywordtype">bool</span> roundUp,</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> Quality <span class="keyword">const</span>&amp; quality)</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span>{</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordflow">if</span> (amount.out &gt; limit)</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> {</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> Amounts result(</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> MulRoundFunc(limit, quality.rate(), amount.in.asset(), roundUp),</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> limit);</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="comment">// Clamp in</span></div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keywordflow">if</span> (result.in &gt; amount.in)</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> result.in = amount.in;</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> XRPL_ASSERT(</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> result.out == limit,</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <span class="stringliteral">&quot;ripple::ceil_out_impl : result matches limit&quot;</span>);</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="keywordflow">return</span> result;</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> }</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> XRPL_ASSERT(</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> amount.out &lt;= limit, <span class="stringliteral">&quot;ripple::ceil_out_impl : result inside limit&quot;</span>);</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <span class="keywordflow">return</span> amount;</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span>}</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> </div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span>Amounts</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span>Quality::ceil_out(Amounts <span class="keyword">const</span>&amp; amount, STAmount <span class="keyword">const</span>&amp; limit)<span class="keyword"> const</span></div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span><span class="keyword"></span>{</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">return</span> ceil_out_impl&lt;mulRound&gt;(amount, limit, <span class="comment">/* roundUp */</span> <span class="keyword">true</span>, *<span class="keyword">this</span>);</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span>}</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span>Amounts</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span>Quality::ceil_out_strict(</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> Amounts <span class="keyword">const</span>&amp; amount,</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> STAmount <span class="keyword">const</span>&amp; limit,</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <span class="keywordtype">bool</span> roundUp)<span class="keyword"> const</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span><span class="keyword"></span>{</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="keywordflow">return</span> ceil_out_impl&lt;mulRoundStrict&gt;(amount, limit, roundUp, *<span class="keyword">this</span>);</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span>}</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> </div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span>Quality</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"><a class="line" href="namespaceripple.html#a7c8945b5034bba5f9df719cff2503495"> 158</a></span><a class="code hl_function" href="namespaceripple.html#a7c8945b5034bba5f9df719cff2503495">composed_quality</a>(Quality <span class="keyword">const</span>&amp; lhs, Quality <span class="keyword">const</span>&amp; rhs)</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span>{</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a> <span class="keyword">const</span> lhs_rate(lhs.rate());</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> XRPL_ASSERT(</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> lhs_rate != beast::zero,</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> <span class="stringliteral">&quot;ripple::composed_quality : nonzero left input&quot;</span>);</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> </div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a> <span class="keyword">const</span> rhs_rate(rhs.rate());</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> XRPL_ASSERT(</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> rhs_rate != beast::zero,</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> <span class="stringliteral">&quot;ripple::composed_quality : nonzero right input&quot;</span>);</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> </div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> <a class="code hl_class" href="classripple_1_1STAmount.html">STAmount</a> <span class="keyword">const</span> rate(<a class="code hl_function" href="namespaceripple.html#ac96824de7714986a7122e5551a2ba470">mulRound</a>(lhs_rate, rhs_rate, lhs_rate.<a class="code hl_function" href="classripple_1_1STAmount.html#a47d741e2043946647600882e7d8fe111">asset</a>(), <span class="keyword">true</span>));</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> </div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a> <span class="keyword">const</span> stored_exponent(rate.exponent() + 100);</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a> <span class="keyword">const</span> stored_mantissa(rate.mantissa());</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> </div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> XRPL_ASSERT(</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> (stored_exponent &gt; 0) &amp;&amp; (stored_exponent &lt;= 255),</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> <span class="stringliteral">&quot;ripple::composed_quality : valid exponent&quot;</span>);</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> </div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <span class="keywordflow">return</span> Quality((stored_exponent &lt;&lt; (64 - 8)) | stored_mantissa);</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span>}</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> </div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span>Quality</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span>Quality::round(<span class="keywordtype">int</span> digits)<span class="keyword"> const</span></div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span><span class="keyword"></span>{</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> <span class="comment">// Modulus for mantissa</span></div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="keyword">static</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint64_t</a> <span class="keyword">const</span> mod[17] = {</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> <span class="comment">/* 0 */</span> 10000000000000000,</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> <span class="comment">/* 1 */</span> 1000000000000000,</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> <span class="comment">/* 2 */</span> 100000000000000,</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> <span class="comment">/* 3 */</span> 10000000000000,</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> <span class="comment">/* 4 */</span> 1000000000000,</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> <span class="comment">/* 5 */</span> 100000000000,</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> <span class="comment">/* 6 */</span> 10000000000,</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> <span class="comment">/* 7 */</span> 1000000000,</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> <span class="comment">/* 8 */</span> 100000000,</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> <span class="comment">/* 9 */</span> 10000000,</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> <span class="comment">/* 10 */</span> 1000000,</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> <span class="comment">/* 11 */</span> 100000,</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> <span class="comment">/* 12 */</span> 10000,</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> <span class="comment">/* 13 */</span> 1000,</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> <span class="comment">/* 14 */</span> 100,</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> <span class="comment">/* 15 */</span> 10,</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> <span class="comment">/* 16 */</span> 1,</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> };</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> </div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> <span class="keyword">auto</span> exponent = m_value &gt;&gt; (64 - 8);</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> <span class="keyword">auto</span> mantissa = m_value &amp; 0x00ffffffffffffffULL;</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> mantissa += mod[digits] - 1;</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> mantissa -= (mantissa % mod[digits]);</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> </div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> <span class="keywordflow">return</span> Quality{(exponent &lt;&lt; (64 - 8)) | mantissa};</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span>}</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> </div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span>} <span class="comment">// namespace ripple</span></div>
<div class="ttc" id="aclassripple_1_1STAmount_html"><div class="ttname"><a href="classripple_1_1STAmount.html">ripple::STAmount</a></div><div class="ttdef"><b>Definition:</b> <a href="STAmount_8h_source.html#l00049">STAmount.h:50</a></div></div>
<div class="ttc" id="aclassripple_1_1STAmount_html_a47d741e2043946647600882e7d8fe111"><div class="ttname"><a href="classripple_1_1STAmount.html#a47d741e2043946647600882e7d8fe111">ripple::STAmount::asset</a></div><div class="ttdeci">Asset const &amp; asset() const</div><div class="ttdef"><b>Definition:</b> <a href="STAmount_8h_source.html#l00483">STAmount.h:483</a></div></div>
<div class="ttc" id="acstdint_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/cstdint.html">cstdint</a></div></div>
<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>
<div class="ttc" id="alimits_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/limits.html">limits</a></div></div>
<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="algorithm_8h_source.html#l00026">algorithm.h:26</a></div></div>
<div class="ttc" id="anamespaceripple_html_a00a9bb5ffdc23b323ac5c9382eee534c"><div class="ttname"><a href="namespaceripple.html#a00a9bb5ffdc23b323ac5c9382eee534c">ripple::ceil_out_impl</a></div><div class="ttdeci">static Amounts ceil_out_impl(Amounts const &amp;amount, STAmount const &amp;limit, bool roundUp, Quality const &amp;quality)</div><div class="ttdef"><b>Definition:</b> <a href="Quality_8cpp_source.html#l00118">Quality.cpp:118</a></div></div>
<div class="ttc" id="anamespaceripple_html_a73cc988e7ba5d5ee0fd9db53740917ec"><div class="ttname"><a href="namespaceripple.html#a73cc988e7ba5d5ee0fd9db53740917ec">ripple::getRate</a></div><div class="ttdeci">std::uint64_t getRate(STAmount const &amp;offerOut, STAmount const &amp;offerIn)</div><div class="ttdef"><b>Definition:</b> <a href="STAmount_8cpp_source.html#l00486">STAmount.cpp:486</a></div></div>
<div class="ttc" id="anamespaceripple_html_a79851514ea1f4586c92d04124c762dde"><div class="ttname"><a href="namespaceripple.html#a79851514ea1f4586c92d04124c762dde">ripple::ceil_in_impl</a></div><div class="ttdeci">static Amounts ceil_in_impl(Amounts const &amp;amount, STAmount const &amp;limit, bool roundUp, Quality const &amp;quality)</div><div class="ttdef"><b>Definition:</b> <a href="Quality_8cpp_source.html#l00077">Quality.cpp:77</a></div></div>
<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 &amp;lhs, Quality const &amp;rhs)</div><div class="ttdef"><b>Definition:</b> <a href="Quality_8cpp_source.html#l00158">Quality.cpp:158</a></div></div>
<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>
<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>
<div class="ttc" id="anamespaceripple_html_ac96824de7714986a7122e5551a2ba470"><div class="ttname"><a href="namespaceripple.html#ac96824de7714986a7122e5551a2ba470">ripple::mulRound</a></div><div class="ttdeci">STAmount mulRound(STAmount const &amp;v1, STAmount const &amp;v2, Asset const &amp;asset, bool roundUp)</div><div class="ttdef"><b>Definition:</b> <a href="STAmount_8cpp_source.html#l01488">STAmount.cpp:1488</a></div></div>
<div class="ttc" id="anumeric_limits_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/numeric_limits.html">std::numeric_limits</a></div></div>
<div class="ttc" id="aprev_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/iterator/prev.html">std::prev</a></div><div class="ttdeci">T prev(T... args)</div></div>
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