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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">// Copyright 2005-2007 Adobe Systems Incorporated</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">//</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#ifndef BOOST_GIL_UTILITIES_HPP</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#define BOOST_GIL_UTILITIES_HPP</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include &lt;boost/gil/detail/mp11.hpp&gt;</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include &lt;boost/config.hpp&gt;</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> </div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#if defined(BOOST_CLANG)</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#pragma clang diagnostic push</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#pragma clang diagnostic ignored &quot;-Wconversion&quot;</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#endif</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">#if defined(BOOST_GCC) &amp;&amp; (BOOST_GCC &gt;= 40900)</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#pragma GCC diagnostic push</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#pragma GCC diagnostic ignored &quot;-Wconversion&quot;</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> </div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include &lt;boost/iterator/iterator_adaptor.hpp&gt;</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include &lt;boost/iterator/iterator_facade.hpp&gt;</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#if defined(BOOST_CLANG)</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="preprocessor">#pragma clang diagnostic pop</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> </div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="preprocessor">#if defined(BOOST_GCC) &amp;&amp; (BOOST_GCC &gt;= 40900)</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="preprocessor">#pragma GCC diagnostic pop</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> </div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="preprocessor">#include &lt;algorithm&gt;</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="preprocessor">#include &lt;cmath&gt;</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="preprocessor">#include &lt;cstddef&gt;</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="preprocessor">#include &lt;functional&gt;</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="preprocessor">#include &lt;iterator&gt;</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="preprocessor">#include &lt;utility&gt;</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="preprocessor">#include &lt;type_traits&gt;</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceboost.html">boost</a> { <span class="keyword">namespace </span>gil {</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> </div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> </div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> </div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="keyword">inline</span> std::ptrdiff_t iround(<span class="keywordtype">float</span> x)</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> <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>std::ptrdiff_t<span class="keyword">&gt;</span>(x + (x &lt; 0.0f ? -0.5f : 0.5f));</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span>}</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span><span class="keyword">inline</span> std::ptrdiff_t iround(<span class="keywordtype">double</span> x)</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span>{</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>std::ptrdiff_t<span class="keyword">&gt;</span>(x + (x &lt; 0.0 ? -0.5 : 0.5));</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span>}</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> </div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span><span class="keyword">inline</span> std::ptrdiff_t ifloor(<span class="keywordtype">float</span> x)</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> <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>std::ptrdiff_t<span class="keyword">&gt;</span>(std::floor(x));</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span>}</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span><span class="keyword">inline</span> std::ptrdiff_t ifloor(<span class="keywordtype">double</span> x)</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span>{</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>std::ptrdiff_t<span class="keyword">&gt;</span>(std::floor(x));</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span>}</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><span class="keyword">inline</span> std::ptrdiff_t iceil(<span class="keywordtype">float</span> x)</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span>{</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>std::ptrdiff_t<span class="keyword">&gt;</span>(std::ceil(x));</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span>}</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> </div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span><span class="keyword">inline</span> std::ptrdiff_t iceil(<span class="keywordtype">double</span> x)</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span>{</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>std::ptrdiff_t<span class="keyword">&gt;</span>(std::ceil(x));</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span>}</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span><span class="keyword">inline</span> T align(T val, std::size_t alignment)</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span>{</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="keywordflow">return</span> val+(alignment - val%alignment)%alignment;</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span>}</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> </div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span><span class="keyword">template</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span>&lt;</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keyword">typename</span> ConstT,</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">typename</span> Value,</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">typename</span> Reference,</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keyword">typename</span> ConstReference,</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">typename</span> ArgType,</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">typename</span> ResultType,</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="keywordtype">bool</span> IsMutable</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span>&gt;</div>
<div class="foldopen" id="foldopen00106" data-start="{" data-end="};">
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1deref__base.html"> 106</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1deref__base.html">deref_base</a></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span>{</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="keyword">using </span>argument_type = ArgType;</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="keyword">using </span>result_type = ResultType;</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="keyword">using </span>const_t = ConstT;</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">using </span>value_type = Value;</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="keyword">using </span>reference = Reference;</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> <span class="keyword">using </span>const_reference = ConstReference;</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> is_mutable = IsMutable;</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span>};</div>
</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> </div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D1, <span class="keyword">typename</span> D2&gt;</div>
<div class="foldopen" id="foldopen00121" data-start="{" data-end="};">
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1deref__compose.html"> 121</a></span><span class="keyword">class </span><a class="code hl_class" href="classboost_1_1gil_1_1deref__compose.html">deref_compose</a> : <span class="keyword">public</span> <a class="code hl_struct" href="structboost_1_1gil_1_1deref__base.html">deref_base</a></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span>&lt;</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> deref_compose&lt;typename D1::const_t, typename D2::const_t&gt;,</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> typename D1::value_type,</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> typename D1::reference,</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> typename D1::const_reference,</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> typename D2::argument_type,</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> typename D1::result_type,</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> D1::is_mutable &amp;&amp; D2::is_mutable</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span>&gt;</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span>{</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> D1 _fn1;</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> D2 _fn2;</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> </div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="keyword">using </span>argument_type = <span class="keyword">typename</span> D2::argument_type;</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keyword">using </span>result_type = <span class="keyword">typename</span> D1::result_type;</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> </div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <a class="code hl_class" href="classboost_1_1gil_1_1deref__compose.html">deref_compose</a>() = <span class="keywordflow">default</span>;</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <a class="code hl_class" href="classboost_1_1gil_1_1deref__compose.html">deref_compose</a>(<span class="keyword">const</span> D1&amp; x, <span class="keyword">const</span> D2&amp; y) : _fn1(x), _fn2(y) {}</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <a class="code hl_class" href="classboost_1_1gil_1_1deref__compose.html">deref_compose</a>(<span class="keyword">const</span> <a class="code hl_class" href="classboost_1_1gil_1_1deref__compose.html">deref_compose</a>&amp; dc) : _fn1(dc._fn1), _fn2(dc._fn2) {}</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> </div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> _D1, <span class="keyword">typename</span> _D2&gt;</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> <a class="code hl_class" href="classboost_1_1gil_1_1deref__compose.html">deref_compose</a>(<span class="keyword">const</span> <a class="code hl_class" href="classboost_1_1gil_1_1deref__compose.html">deref_compose&lt;_D1,_D2&gt;</a>&amp; dc)</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> : _fn1(dc._fn1), _fn2(dc._fn2)</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> result_type operator()(argument_type x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _fn1(_fn2(x)); }</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> result_type operator()(argument_type x) { <span class="keywordflow">return</span> _fn1(_fn2(x)); }</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span>};</div>
</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> </div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span><span class="comment">// reinterpret_cast is implementation-defined. Static cast is not.</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> OutPtr, <span class="keyword">typename</span> In&gt;</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span>BOOST_FORCEINLINE</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span><span class="keyword">auto</span> gil_reinterpret_cast(In* p) -&gt; OutPtr</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> <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>OutPtr<span class="keyword">&gt;</span>(<span class="keyword">static_cast&lt;</span><span class="keywordtype">void</span>*<span class="keyword">&gt;</span>(p));</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span>}</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><span class="keyword">template</span> &lt;<span class="keyword">typename</span> OutPtr, <span class="keyword">typename</span> In&gt;</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span>BOOST_FORCEINLINE</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span><span class="keyword">auto</span> gil_reinterpret_cast_c(In <span class="keyword">const</span>* p) -&gt; OutPtr <span class="keyword">const</span></div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span>{</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>OutPtr const<span class="keyword">&gt;</span>(<span class="keyword">static_cast&lt;</span><span class="keywordtype">void</span> const*<span class="keyword">&gt;</span>(p));</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span>}</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> </div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span><span class="keyword">namespace </span>detail {</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> </div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> </div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span><span class="keyword">template</span> &lt;<span class="keyword">class</span> InputIter, <span class="keyword">class</span> Size, <span class="keyword">class</span> OutputIter&gt;</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span><span class="keyword">auto</span> _copy_n(InputIter first, Size count, OutputIter result, std::input_iterator_tag)</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> -&gt; std::pair&lt;InputIter, OutputIter&gt;</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span>{</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> <span class="keywordflow">for</span> ( ; count &gt; 0; --count)</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> *result = *first;</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> ++first;</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> ++result;</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> }</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> <span class="keywordflow">return</span> std::pair&lt;InputIter, OutputIter&gt;(first, result);</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span>}</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> </div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span><span class="keyword">template</span> &lt;<span class="keyword">class</span> RAIter, <span class="keyword">class</span> Size, <span class="keyword">class</span> OutputIter&gt;</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span><span class="keyword">inline</span> <span class="keyword">auto</span> _copy_n(RAIter first, Size count, OutputIter result, std::random_access_iterator_tag)</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> -&gt; std::pair&lt;RAIter, OutputIter&gt;</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span>{</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> RAIter last = first + count;</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> <span class="keywordflow">return</span> std::pair&lt;RAIter, OutputIter&gt;(last, std::copy(first, last, result));</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span>}</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> </div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span><span class="keyword">template</span> &lt;<span class="keyword">class</span> InputIter, <span class="keyword">class</span> Size, <span class="keyword">class</span> OutputIter&gt;</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span><span class="keyword">inline</span> <span class="keyword">auto</span> _copy_n(InputIter first, Size count, OutputIter result)</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> -&gt; std::pair&lt;InputIter, OutputIter&gt;</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span>{</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> <span class="keywordflow">return</span> _copy_n(first, count, result, <span class="keyword">typename</span> std::iterator_traits&lt;InputIter&gt;::iterator_category());</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span>}</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> </div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span><span class="keyword">template</span> &lt;<span class="keyword">class</span> InputIter, <span class="keyword">class</span> Size, <span class="keyword">class</span> OutputIter&gt;</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span><span class="keyword">inline</span> <span class="keyword">auto</span> copy_n(InputIter first, Size count, OutputIter result)</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> -&gt; std::pair&lt;InputIter, OutputIter&gt;</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> <span class="keywordflow">return</span> detail::_copy_n(first, count, result);</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span>}</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> </div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="foldopen" id="foldopen00210" data-start="{" data-end="};">
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1identity.html"> 210</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1identity.html">identity</a></div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span>{</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> <span class="keyword">using </span>argument_type = T;</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> <span class="keyword">using </span>result_type = T;</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> <span class="keyword">const</span> T&amp; operator()(<span class="keyword">const</span> T&amp; val)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> val; }</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span>};</div>
</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> </div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T1, <span class="keyword">typename</span> T2&gt;</div>
<div class="foldopen" id="foldopen00219" data-start="{" data-end="};">
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1plus__asymmetric.html"> 219</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1plus__asymmetric.html">plus_asymmetric</a> {</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> <span class="keyword">using </span>first_argument_type = T1;</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> <span class="keyword">using </span>second_argument_type = T2;</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> <span class="keyword">using </span>result_type = T1;</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> T1 operator()(T1 f1, T2 f2)<span class="keyword"> const</span></div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> <span class="keywordflow">return</span> f1+f2;</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> }</div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span>};</div>
</div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> </div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="foldopen" id="foldopen00231" data-start="{" data-end="};">
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1inc.html"> 231</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1inc.html">inc</a></div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span>{</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> <span class="keyword">using </span>argument_type = T;</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> <span class="keyword">using </span>result_type = T;</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> T operator()(T x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> ++x; }</div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span>};</div>
</div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> </div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="foldopen" id="foldopen00240" data-start="{" data-end="};">
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1dec.html"> 240</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1dec.html">dec</a></div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span>{</div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span> <span class="keyword">using </span>argument_type = T;</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> <span class="keyword">using </span>result_type = T;</div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> T operator()(T x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> --x; }</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span>};</div>
</div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span> </div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span><span class="comment">// a given Boost.MP11-compatible list (or size if the type is not present)</span></div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Types, <span class="keyword">typename</span> T&gt;</div>
<div class="foldopen" id="foldopen00250" data-start="{" data-end="};">
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1type__to__index.html"> 250</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1type__to__index.html">type_to_index</a> : mp11::mp_find&lt;Types, T&gt;</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span>{</div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> <span class="keyword">static_assert</span>(mp11::mp_contains&lt;Types, T&gt;::value, <span class="stringliteral">&quot;T should be element of Types&quot;</span>);</div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span>};</div>
</div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> </div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span>} <span class="comment">// namespace detail</span></div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> </div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span><span class="keyword">template</span></div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span>&lt;</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> <span class="keyword">typename</span> ColorSpace,</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> <span class="keyword">typename</span> ChannelMapping = mp11::mp_iota</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> &lt;</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> std::integral_constant&lt;int, mp11::mp_size&lt;ColorSpace&gt;::value&gt;</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> &gt;</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span>&gt;</div>
<div class="foldopen" id="foldopen00267" data-start="{" data-end="};">
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1layout.html"> 267</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1layout.html">layout</a></div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span>{</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> <span class="keyword">using </span>color_space_t = ColorSpace;</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> <span class="keyword">using </span>channel_mapping_t = ChannelMapping;</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> </div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> <span class="keyword">static_assert</span>(mp11::mp_size&lt;ColorSpace&gt;::value &gt; 0,</div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> <span class="stringliteral">&quot;color space should not be empty sequence&quot;</span>);</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span>};</div>
</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> </div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Value, <span class="keyword">typename</span> T1, <span class="keyword">typename</span> T2&gt;</div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span><span class="keywordtype">void</span> swap_proxy(T1&amp; left, T2&amp; right)</div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span>{</div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> Value tmp = left;</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span> left = right;</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span> right = tmp;</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span>}</div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> </div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span>BOOST_FORCEINLINE <span class="keywordtype">bool</span> little_endian()</div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span>{</div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span> <span class="keywordtype">short</span> tester = 0x0001;</div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> <span class="keywordflow">return</span> *(<span class="keywordtype">char</span>*)&amp;tester!=0;</div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span>}</div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span>BOOST_FORCEINLINE <span class="keywordtype">bool</span> big_endian()</div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span>{</div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span> <span class="keywordflow">return</span> !little_endian();</div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"> 296</span>}</div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span> </div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span>}} <span class="comment">// namespace boost::gil</span></div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span> </div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclassboost_1_1gil_1_1deref__compose_html"><div class="ttname"><a href="classboost_1_1gil_1_1deref__compose.html">boost::gil::deref_compose</a></div><div class="ttdoc">Composes two dereference function objects. Similar to std::unary_compose but needs to pull some alias...</div><div class="ttdef"><b>Definition</b> utilities.hpp:131</div></div>
<div class="ttc" id="anamespaceboost_html"><div class="ttname"><a href="namespaceboost.html">boost</a></div><div class="ttdoc">defined(BOOST_NO_CXX17_HDR_MEMORY_RESOURCE)</div><div class="ttdef"><b>Definition</b> algorithm.hpp:36</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1deref__base_html"><div class="ttname"><a href="structboost_1_1gil_1_1deref__base.html">boost::gil::deref_base</a></div><div class="ttdoc">Helper base class for pixel dereference adaptors.</div><div class="ttdef"><b>Definition</b> utilities.hpp:107</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1detail_1_1dec_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1dec.html">boost::gil::detail::dec</a></div><div class="ttdoc">operator– wrapped in a function object</div><div class="ttdef"><b>Definition</b> utilities.hpp:241</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1detail_1_1identity_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1identity.html">boost::gil::detail::identity</a></div><div class="ttdoc">identity taken from SGI STL.</div><div class="ttdef"><b>Definition</b> utilities.hpp:211</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1detail_1_1inc_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1inc.html">boost::gil::detail::inc</a></div><div class="ttdoc">operator++ wrapped in a function object</div><div class="ttdef"><b>Definition</b> utilities.hpp:232</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1detail_1_1plus__asymmetric_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1plus__asymmetric.html">boost::gil::detail::plus_asymmetric</a></div><div class="ttdoc">plus function object whose arguments may be of different type.</div><div class="ttdef"><b>Definition</b> utilities.hpp:219</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1detail_1_1type__to__index_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1type__to__index.html">boost::gil::detail::type_to_index</a></div><div class="ttdoc">Returns the index corresponding to the first occurrence of a given given type in.</div><div class="ttdef"><b>Definition</b> utilities.hpp:251</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1layout_html"><div class="ttname"><a href="structboost_1_1gil_1_1layout.html">boost::gil::layout</a></div><div class="ttdoc">Represents a color space and ordering of channels in memory.</div><div class="ttdef"><b>Definition</b> utilities.hpp:268</div></div>
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