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- <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Copyright 2005-2007 Adobe Systems Incorporated</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">//</span></div><div class="line"><a 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 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 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 name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#ifndef BOOST_GIL_UTILITIES_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#define BOOST_GIL_UTILITIES_HPP</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <boost/gil/detail/mp11.hpp></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <boost/config.hpp></span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#if defined(BOOST_CLANG)</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#pragma clang diagnostic push</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#pragma clang diagnostic ignored "-Wconversion"</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#if defined(BOOST_GCC) && (BOOST_GCC >= 40900)</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#pragma GCC diagnostic push</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#pragma GCC diagnostic ignored "-Wconversion"</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <boost/iterator/iterator_adaptor.hpp></span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <boost/iterator/iterator_facade.hpp></span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#if defined(BOOST_CLANG)</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#pragma clang diagnostic pop</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#if defined(BOOST_GCC) && (BOOST_GCC >= 40900)</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#pragma GCC diagnostic pop</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <algorithm></span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <cmath></span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#include <cstddef></span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include <functional></span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#include <iterator></span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor">#include <utility></span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#include <type_traits></span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a 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 name="l00054"></a><span class="lineno"> 54</span> {</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">return</span> static_cast<std::ptrdiff_t>(x + (x < 0.0f ? -0.5f : 0.5f));</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> }</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div><div class="line"><a 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 name="l00059"></a><span class="lineno"> 59</span> {</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> static_cast<std::ptrdiff_t>(x + (x < 0.0 ? -0.5 : 0.5));</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> }</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a 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 name="l00064"></a><span class="lineno"> 64</span> {</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> static_cast<std::ptrdiff_t>(std::floor(x));</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> }</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a 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 name="l00069"></a><span class="lineno"> 69</span> {</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">return</span> static_cast<std::ptrdiff_t>(std::floor(x));</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> }</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div><div class="line"><a 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 name="l00074"></a><span class="lineno"> 74</span> {</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">return</span> static_cast<std::ptrdiff_t>(std::ceil(x));</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> }</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div><div class="line"><a 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 name="l00079"></a><span class="lineno"> 79</span> {</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> static_cast<std::ptrdiff_t>(std::ceil(x));</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> }</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div><div class="line"><a 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 name="l00089"></a><span class="lineno"> 89</span> {</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">return</span> val+(alignment - val%alignment)%alignment;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> }</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="keyword">template</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">typename</span> ConstT,</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">typename</span> Value,</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">typename</span> Reference,</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keyword">typename</span> ConstReference,</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">typename</span> ArgType,</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keyword">typename</span> ResultType,</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordtype">bool</span> IsMutable</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> ></div><div class="line"><a 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" href="structboost_1_1gil_1_1deref__base.html">deref_base</a></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> {</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">using</span> argument_type = ArgType;</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keyword">using</span> result_type = ResultType;</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">using</span> const_t = ConstT;</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keyword">using</span> value_type = Value;</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keyword">using</span> reference = Reference;</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">using</span> const_reference = ConstReference;</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">static</span> constexpr <span class="keywordtype">bool</span> is_mutable = IsMutable;</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> };</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="keyword">template</span> <<span class="keyword">typename</span> D1, <span class="keyword">typename</span> D2></div><div class="line"><a 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" href="classboost_1_1gil_1_1deref__compose.html">deref_compose</a> : <span class="keyword">public</span> <a class="code" href="structboost_1_1gil_1_1deref__base.html">deref_base</a></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  deref_compose<typename D1::const_t, typename D2::const_t>,</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  typename D1::value_type,</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  typename D1::reference,</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  typename D1::const_reference,</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  typename D2::argument_type,</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  typename D1::result_type,</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  D1::is_mutable && D2::is_mutable</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> ></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> {</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  D1 _fn1;</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  D2 _fn2;</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div><div class="line"><a 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 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 name="l00138"></a><span class="lineno"> 138</span> </div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <a class="code" href="classboost_1_1gil_1_1deref__compose.html">deref_compose</a>() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <a class="code" href="classboost_1_1gil_1_1deref__compose.html">deref_compose</a>(<span class="keyword">const</span> D1& x, <span class="keyword">const</span> D2& y) : _fn1(x), _fn2(y) {}</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <a class="code" href="classboost_1_1gil_1_1deref__compose.html">deref_compose</a>(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1deref__compose.html">deref_compose</a>& dc) : _fn1(dc._fn1), _fn2(dc._fn2) {}</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _D1, <span class="keyword">typename</span> _D2></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <a class="code" href="classboost_1_1gil_1_1deref__compose.html">deref_compose</a>(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1deref__compose.html">deref_compose<_D1,_D2></a>& dc)</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  : _fn1(dc._fn1), _fn2(dc._fn2)</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  {}</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div><div class="line"><a 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 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 name="l00150"></a><span class="lineno"> 150</span> };</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div><div class="line"><a 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 name="l00153"></a><span class="lineno"> 153</span> <span class="keyword">template</span> <<span class="keyword">typename</span> OutPtr, <span class="keyword">typename</span> In></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> BOOST_FORCEINLINE</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span> OutPtr gil_reinterpret_cast(In* p)</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> {</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">return</span> static_cast<OutPtr>(static_cast<void*>(p));</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> }</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="keyword">template</span> <<span class="keyword">typename</span> OutPtr, <span class="keyword">typename</span> In> BOOST_FORCEINLINE</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="keyword">const</span> OutPtr gil_reinterpret_cast_c(<span class="keyword">const</span> In* p)</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span> {</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">return</span> static_cast<const OutPtr>(static_cast<const void*>(p));</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span> }</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="keyword">namespace </span>detail {</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="keyword">template</span> <<span class="keyword">class</span> InputIter, <span class="keyword">class</span> Size, <span class="keyword">class</span> OutputIter></div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> std::pair<InputIter, OutputIter> _copy_n(InputIter first, Size count,</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  OutputIter result, std::input_iterator_tag)</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> {</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordflow">for</span> ( ; count > 0; --count)</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  {</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  *result = *first;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  ++first;</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  ++result;</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  }</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordflow">return</span> std::pair<InputIter, OutputIter>(first, result);</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span> }</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span> </div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="keyword">template</span> <<span class="keyword">class</span> RAIter, <span class="keyword">class</span> Size, <span class="keyword">class</span> OutputIter></div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="keyword">inline</span> std::pair<RAIter, OutputIter></div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> _copy_n(RAIter first, Size count, OutputIter result, std::random_access_iterator_tag)</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> {</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  RAIter last = first + count;</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">return</span> std::pair<RAIter, OutputIter>(last, <a class="code" href="group___s_t_l_optimizations.html#ga8e23fe06d31c7cce605e4bf8255e1ee9">std::copy</a>(first, last, result));</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span> }</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="keyword">template</span> <<span class="keyword">class</span> InputIter, <span class="keyword">class</span> Size, <span class="keyword">class</span> OutputIter></div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="keyword">inline</span> std::pair<InputIter, OutputIter></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span> _copy_n(InputIter first, Size count, OutputIter result)</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span> {</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">return</span> _copy_n(first, count, result, <span class="keyword">typename</span> std::iterator_traits<InputIter>::iterator_category());</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> }</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span> </div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="keyword">template</span> <<span class="keyword">class</span> InputIter, <span class="keyword">class</span> Size, <span class="keyword">class</span> OutputIter></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="keyword">inline</span> std::pair<InputIter, OutputIter></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span> copy_n(InputIter first, Size count, OutputIter result)</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span> {</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">return</span> detail::_copy_n(first, count, result);</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span> }</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span> </div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div><div class="line"><a name="l00209"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1identity.html"> 209</a></span> <span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1detail_1_1identity.html">identity</a></div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span> {</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keyword">using</span> argument_type = T;</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keyword">using</span> result_type = T;</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keyword">const</span> T& operator()(<span class="keyword">const</span> T& val)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> val; }</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span> };</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span> </div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T1, <span class="keyword">typename</span> T2></div><div class="line"><a name="l00218"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1plus__asymmetric.html"> 218</a></span> <span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1detail_1_1plus__asymmetric.html">plus_asymmetric</a> {</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keyword">using</span> first_argument_type = T1;</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keyword">using</span> second_argument_type = T2;</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keyword">using</span> result_type = T1;</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  T1 operator()(T1 f1, T2 f2)<span class="keyword"> const</span></div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">return</span> f1+f2;</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  }</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span> };</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span> </div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div><div class="line"><a name="l00230"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1inc.html"> 230</a></span> <span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1detail_1_1inc.html">inc</a></div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span> {</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keyword">using</span> argument_type = T;</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keyword">using</span> result_type = T;</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  T operator()(T x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> ++x; }</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span> };</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span> </div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div><div class="line"><a name="l00239"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1dec.html"> 239</a></span> <span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1detail_1_1dec.html">dec</a></div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span> {</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keyword">using</span> argument_type = T;</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keyword">using</span> result_type = T;</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  T operator()(T x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> --x; }</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span> };</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="comment">// a given Boost.MP11-compatible list (or size if the type is not present)</span></div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Types, <span class="keyword">typename</span> T></div><div class="line"><a name="l00249"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1type__to__index.html"> 249</a></span> <span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1detail_1_1type__to__index.html">type_to_index</a> : mp11::mp_find<Types, T></div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span> {</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  static_assert(mp11::mp_contains<Types, T>::value, <span class="stringliteral">"T should be element of Types"</span>);</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span> };</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span> } <span class="comment">// namespace detail</span></div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span> </div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="keyword">template</span></div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keyword">typename</span> ColorSpace,</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keyword">typename</span> ChannelMapping = mp11::mp_iota</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  std::integral_constant<int, mp11::mp_size<ColorSpace>::value></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  ></div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span> ></div><div class="line"><a name="l00266"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1layout.html"> 266</a></span> <span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1layout.html">layout</a></div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span> {</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keyword">using</span> color_space_t = ColorSpace;</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="keyword">using</span> channel_mapping_t = ChannelMapping;</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  static_assert(mp11::mp_size<ColorSpace>::value > 0,</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="stringliteral">"color space should not be empty sequence"</span>);</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span> };</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Value, <span class="keyword">typename</span> T1, <span class="keyword">typename</span> T2></div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="keywordtype">void</span> swap_proxy(T1& left, T2& right)</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span> {</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  Value tmp = left;</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  left = right;</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  right = tmp;</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span> }</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span> </div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span> BOOST_FORCEINLINE <span class="keywordtype">bool</span> little_endian()</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span> {</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="keywordtype">short</span> tester = 0x0001;</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="keywordflow">return</span> *(<span class="keywordtype">char</span>*)&tester!=0;</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span> }</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span> BOOST_FORCEINLINE <span class="keywordtype">bool</span> big_endian()</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span> {</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="keywordflow">return</span> !little_endian();</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span> }</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span> </div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span> }} <span class="comment">// namespace boost::gil</span></div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span> </div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="structboost_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:218</div></div>
- <div class="ttc" id="structboost_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:106</div></div>
- <div class="ttc" id="structboost_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:239</div></div>
- <div class="ttc" id="structboost_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:209</div></div>
- <div class="ttc" id="structboost_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:230</div></div>
- <div class="ttc" id="structboost_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:266</div></div>
- <div class="ttc" id="classboost_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:121</div></div>
- <div class="ttc" id="group___s_t_l_optimizations_html_ga8e23fe06d31c7cce605e4bf8255e1ee9"><div class="ttname"><a href="group___s_t_l_optimizations.html#ga8e23fe06d31c7cce605e4bf8255e1ee9">std::copy</a></div><div class="ttdeci">BOOST_FORCEINLINE auto copy(boost::gil::pixel< T, CS > *first, boost::gil::pixel< T, CS > *last, boost::gil::pixel< T, CS > *dst) -> boost::gil::pixel< T, CS > *</div><div class="ttdoc">Copy when both src and dst are interleaved and of the same type can be just memmove.</div><div class="ttdef"><b>Definition:</b> algorithm.hpp:139</div></div>
- <div class="ttc" id="structboost_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 occurrance of a given given type in.</div><div class="ttdef"><b>Definition:</b> utilities.hpp:249</div></div>
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