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<a href="a00437.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Components for compile-time parsing of numbers -*- C++ -*-</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Copyright (C) 2013-2018 Free Software Foundation, Inc.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// software; you can redistribute it and/or modify it under the</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// terms of the GNU General Public License as published by the</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// any later version.</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="comment">// This library is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// GNU General Public License for more details.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// 3.1, as published by the Free Software Foundation.</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="comment">// You should have received a copy of the GNU General Public License and</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/** @file bits/parse_numbers.h</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * This is an internal header file, included by other library headers.</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * Do not attempt to use it directly. @headername{chrono}</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> */</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#ifndef _GLIBCXX_PARSE_NUMBERS_H</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#define _GLIBCXX_PARSE_NUMBERS_H 1</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#pragma GCC system_header</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">// From n3642.pdf except I added binary literals and digit separator '\''.</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#if __cplusplus > 201103L</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include <<a class="code" href="a00095.html">limits</a>></span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">namespace </span><a class="code" href="a01541.html">std</a> _GLIBCXX_VISIBILITY(default)</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> {</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">namespace </span>__parse_int</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> {</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base, <span class="keywordtype">char</span> _Dig></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">struct </span>_Digit;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">struct </span>_Digit<_Base, '0'> : integral_constant<unsigned, 0></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">using</span> __valid = <a class="code" href="a01479.html#ga6a860513044e23d34e553ea986e83fa1">true_type</a>;</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> </div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">struct </span>_Digit<_Base, '1'> : integral_constant<unsigned, 1></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  {</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">using</span> __valid = <a class="code" href="a01479.html#ga6a860513044e23d34e553ea986e83fa1">true_type</a>;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  };</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>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base, <span class="keywordtype">unsigned</span> _Val></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">struct </span>_Digit_impl : integral_constant<unsigned, _Val></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>  static_assert(_Base > _Val, <span class="stringliteral">"invalid digit"</span>);</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">using</span> __valid = <a class="code" href="a01479.html#ga6a860513044e23d34e553ea986e83fa1">true_type</a>;</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> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keyword">struct </span>_Digit<_Base, '2'> : _Digit_impl<_Base, 2></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">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">struct </span>_Digit<_Base, '3'> : _Digit_impl<_Base, 3></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  { };</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>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keyword">struct </span>_Digit<_Base, '4'> : _Digit_impl<_Base, 4></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> </div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keyword">struct </span>_Digit<_Base, '5'> : _Digit_impl<_Base, 5></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  { };</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">struct </span>_Digit<_Base, '6'> : _Digit_impl<_Base, 6></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  { };</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">struct </span>_Digit<_Base, '7'> : _Digit_impl<_Base, 7></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="l00093"></a><span class="lineno"> 93</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">struct </span>_Digit<_Base, '8'> : _Digit_impl<_Base, 8></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  { };</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">struct </span>_Digit<_Base, '9'> : _Digit_impl<_Base, 9></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  { };</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">struct </span>_Digit<_Base, 'a'> : _Digit_impl<_Base, 0xa></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  { };</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">struct </span>_Digit<_Base, 'A'> : _Digit_impl<_Base, 0xa></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> </div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">struct </span>_Digit<_Base, 'b'> : _Digit_impl<_Base, 0xb></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  { };</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">struct </span>_Digit<_Base, 'B'> : _Digit_impl<_Base, 0xb></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="l00117"></a><span class="lineno"> 117</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">struct </span>_Digit<_Base, 'c'> : _Digit_impl<_Base, 0xc></div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  { };</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keyword">struct </span>_Digit<_Base, 'C'> : _Digit_impl<_Base, 0xc></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  { };</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">struct </span>_Digit<_Base, 'd'> : _Digit_impl<_Base, 0xd></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  { };</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">struct </span>_Digit<_Base, 'D'> : _Digit_impl<_Base, 0xd></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> </div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">struct </span>_Digit<_Base, 'e'> : _Digit_impl<_Base, 0xe></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> </div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keyword">struct </span>_Digit<_Base, 'E'> : _Digit_impl<_Base, 0xe></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  { };</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keyword">struct </span>_Digit<_Base, 'f'> : _Digit_impl<_Base, 0xf></div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  { };</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keyword">struct </span>_Digit<_Base, 'F'> : _Digit_impl<_Base, 0xf></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> </div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">// Digit separator</span></div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">struct </span>_Digit<_Base, '\''> : integral_constant<unsigned, 0></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  {</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keyword">using</span> __valid = <a class="code" href="a01479.html#gaebe6729ab5488ecc76c762873d226857">false_type</a>;</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  };</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment">//------------------------------------------------------------------------------</span></div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span> </div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> _Val></div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keyword">using</span> __ull_constant = integral_constant<unsigned long long, _Val>;</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base, <span class="keywordtype">char</span> _Dig, <span class="keywordtype">char</span>... _Digs></div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keyword">struct </span>_Power_help</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  {</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">using</span> __next = <span class="keyword">typename</span> _Power_help<_Base, _Digs...>::type;</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keyword">using</span> __valid_digit = <span class="keyword">typename</span> _Digit<_Base, _Dig>::__valid;</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">using</span> type</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  = __ull_constant<__next::value * (__valid_digit{} ? _Base : 1ULL)>;</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  };</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base, <span class="keywordtype">char</span> _Dig></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keyword">struct </span>_Power_help<_Base, _Dig></div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  {</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keyword">using</span> __valid_digit = <span class="keyword">typename</span> _Digit<_Base, _Dig>::__valid;</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keyword">using</span> type = __ull_constant<__valid_digit::value>;</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> </div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base, <span class="keywordtype">char</span>... _Digs></div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keyword">struct </span>_Power : _Power_help<_Base, _Digs...>::type</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  { };</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keyword">struct </span>_Power<_Base> : __ull_constant<0></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="comment">//------------------------------------------------------------------------------</span></div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> _Pow, <span class="keywordtype">char</span> _Dig, <span class="keywordtype">char</span>... _Digs></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">struct </span>_Number_help</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  {</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keyword">using</span> __digit = _Digit<_Base, _Dig>;</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keyword">using</span> __valid_digit = <span class="keyword">typename</span> __digit::__valid;</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keyword">using</span> __next = _Number_help<_Base,</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  __valid_digit::value ? _Pow / _Base : _Pow,</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  _Digs...>;</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">using</span> type = __ull_constant<_Pow * __digit::value + __next::type::value>;</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  static_assert((type::value / _Pow) == __digit::value,</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="stringliteral">"integer literal does not fit in unsigned long long"</span>);</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="comment">// Skip past digit separators:</span></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> _Pow, <span class="keywordtype">char</span> _Dig, <span class="keywordtype">char</span>..._Digs></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keyword">struct </span>_Number_help<_Base, _Pow, '\'', _Dig, _Digs...></div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  : _Number_help<_Base, _Pow, _Dig, _Digs...></div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  { };</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>  <span class="comment">// Terminating case for recursion:</span></div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base, <span class="keywordtype">char</span> _Dig></div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keyword">struct </span>_Number_help<_Base, 1ULL, _Dig></div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  {</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keyword">using</span> type = __ull_constant<_Digit<_Base, _Dig>::value>;</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  };</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span> </div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base, <span class="keywordtype">char</span>... _Digs></div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keyword">struct </span>_Number</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  : _Number_help<_Base, _Power<_Base, _Digs...>::value, _Digs...>::type</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  { };</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span> </div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> _Base></div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keyword">struct </span>_Number<_Base></div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  : __ull_constant<0></div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  { };</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="comment">//------------------------------------------------------------------------------</span></div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keyword">template</span><<span class="keywordtype">char</span>... _Digs></div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keyword">struct </span>_Parse_int;</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span> </div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keyword">template</span><<span class="keywordtype">char</span>... _Digs></div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keyword">struct </span>_Parse_int<'0', 'b', _Digs...></div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  : _Number<2U, _Digs...>::type</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> </div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keyword">template</span><<span class="keywordtype">char</span>... _Digs></div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keyword">struct </span>_Parse_int<'0', 'B', _Digs...></div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  : _Number<2U, _Digs...>::type</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  { };</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keyword">template</span><<span class="keywordtype">char</span>... _Digs></div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keyword">struct </span>_Parse_int<'0', 'x', _Digs...></div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  : _Number<16U, _Digs...>::type</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  { };</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span> </div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="keyword">template</span><<span class="keywordtype">char</span>... _Digs></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keyword">struct </span>_Parse_int<'0', 'X', _Digs...></div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  : _Number<16U, _Digs...>::type</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  { };</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span> </div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keyword">template</span><<span class="keywordtype">char</span>... _Digs></div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keyword">struct </span>_Parse_int<'0', _Digs...></div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  : _Number<8U, _Digs...>::type</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</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>  <span class="keyword">template</span><<span class="keywordtype">char</span>... _Digs></div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keyword">struct </span>_Parse_int</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  : _Number<10U, _Digs...>::type</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  { };</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span> </div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span> } <span class="comment">// namespace __parse_int</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> </div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="keyword">namespace </span>__select_int</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>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> _Val, <span class="keyword">typename</span>... _Ints></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="keyword">struct </span>_Select_int_base;</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span> </div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keyword">template</span><<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> _Val, <span class="keyword">typename</span> _IntType, <span class="keyword">typename</span>... _Ints></div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keyword">struct </span>_Select_int_base<_Val, _IntType, _Ints...></div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  : <a class="code" href="a01479.html#ga3f79e9f15004fc524ff345fc510a2813">conditional_t</a><(_Val <= std::numeric_limits<_IntType>::max()),</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  integral_constant<_IntType, _Val>,</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  _Select_int_base<_Val, _Ints...>></div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  { };</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span> </div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  template<unsigned long long _Val></div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  struct _Select_int_base<_Val></div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  { };</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span> </div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  template<char... _Digs></div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  using _Select_int = typename _Select_int_base<</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  __parse_int::_Parse_int<_Digs...>::value,</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  unsigned char,</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  unsigned short,</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  unsigned int,</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  unsigned long,</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  unsigned long long</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  >::type;</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span> </div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span> } <span class="comment">// namespace __select_int</span></div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span> </div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span> _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span> } <span class="comment">// namespace std</span></div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span> </div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span> #endif <span class="comment">// __cplusplus > 201103L</span></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> #endif <span class="comment">// _GLIBCXX_PARSE_NUMBERS_H</span></div><div class="ttc" id="a01479_html_ga6a860513044e23d34e553ea986e83fa1"><div class="ttname"><a href="a01479.html#ga6a860513044e23d34e553ea986e83fa1">std::true_type</a></div><div class="ttdeci">integral_constant< bool, true > true_type</div><div class="ttdoc">The type used as a compile-time boolean with true value.</div><div class="ttdef"><b>Definition:</b> <a href="a00167_source.html#l00075">type_traits:75</a></div></div>
<div class="ttc" id="a01541_html"><div class="ttname"><a href="a01541.html">std</a></div><div class="ttdoc">ISO C++ entities toplevel namespace is std.</div></div>
<div class="ttc" id="a00095_html"><div class="ttname"><a href="a00095.html">limits</a></div></div>
<div class="ttc" id="a01479_html_ga3f79e9f15004fc524ff345fc510a2813"><div class="ttname"><a href="a01479.html#ga3f79e9f15004fc524ff345fc510a2813">std::conditional_t</a></div><div class="ttdeci">typename conditional< _Cond, _Iftrue, _Iffalse >::type conditional_t</div><div class="ttdoc">Alias template for conditional.</div><div class="ttdef"><b>Definition:</b> <a href="a00167_source.html#l02298">type_traits:2298</a></div></div>
<div class="ttc" id="a01479_html_gaebe6729ab5488ecc76c762873d226857"><div class="ttname"><a href="a01479.html#gaebe6729ab5488ecc76c762873d226857">std::false_type</a></div><div class="ttdeci">integral_constant< bool, false > false_type</div><div class="ttdoc">The type used as a compile-time boolean with false value.</div><div class="ttdef"><b>Definition:</b> <a href="a00167_source.html#l00078">type_traits:78</a></div></div>
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