\hypertarget{format_8h_source}{}\doxysection{format.\+h}
\label{format_8h_source}\index{kblib/format.h@{kblib/format.h}}
\mbox{\hyperlink{format_8h}{Go to the documentation of this file.}}
\begin{DoxyCode}{0}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00001}00001 \textcolor{comment}{/* *****************************************************************************}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00002}00002 \textcolor{comment}{ * kblib is a general utility library for C++14 and C++17, intended to provide}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00003}00003 \textcolor{comment}{ * performant high-\/level abstractions and more expressive ways to do simple}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00004}00004 \textcolor{comment}{ * things.}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00005}00005 \textcolor{comment}{ *}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00006}00006 \textcolor{comment}{ * Copyright (c) 2021 killerbee}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00007}00007 \textcolor{comment}{ *}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00008}00008 \textcolor{comment}{ * This program is free software: you can redistribute it and/or modify}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00009}00009 \textcolor{comment}{ * it under the terms of the GNU General Public License as published by}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00010}00010 \textcolor{comment}{ * the Free Software Foundation, either version 3 of the License, or}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00011}00011 \textcolor{comment}{ * (at your option) any later version.}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00012}00012 \textcolor{comment}{ *}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00013}00013 \textcolor{comment}{ * This program is distributed in the hope that it will be useful,}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00014}00014 \textcolor{comment}{ * but WITHOUT ANY WARRANTY; without even the implied warranty of}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00015}00015 \textcolor{comment}{ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00016}00016 \textcolor{comment}{ * GNU General Public License for more details.}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00017}00017 \textcolor{comment}{ *}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00018}00018 \textcolor{comment}{ * You should have received a copy of the GNU General Public License}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00019}00019 \textcolor{comment}{ * along with this program.  If not, see <https://www.gnu.org/licenses/>.}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00020}00020 \textcolor{comment}{ * ****************************************************************************/}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00021}00021 }
\DoxyCodeLine{\Hypertarget{format_8h_source_l00032}00032 \textcolor{preprocessor}{\#ifndef KBLIB\_FORMAT\_H}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00033}00033 \textcolor{preprocessor}{\#define KBLIB\_FORMAT\_H}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00034}00034 }
\DoxyCodeLine{\Hypertarget{format_8h_source_l00035}00035 \textcolor{preprocessor}{\#include "{}\mbox{\hyperlink{fakestd_8h}{fakestd.h}}"{}}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00036}00036 }
\DoxyCodeLine{\Hypertarget{format_8h_source_l00037}00037 \textcolor{preprocessor}{\#include <algorithm>}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00038}00038 \textcolor{preprocessor}{\#include <cmath>}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00039}00039 }
\DoxyCodeLine{\Hypertarget{format_8h_source_l00040}00040 \textcolor{keyword}{namespace }\mbox{\hyperlink{tdecl_8h_a4b5c574c663a392148218cd4410fd7a1}{KBLIB\_NS}} \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00041}00041 }
\DoxyCodeLine{\Hypertarget{format_8h_source_l00049}00049 \textcolor{keyword}{template} <\textcolor{keyword}{typename} Number>}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00050}\mbox{\hyperlink{namespacekblib_ab5e75c9314c76b12efd507259206a546}{00050}} \textcolor{keyword}{constexpr} \textcolor{keyword}{auto} \mbox{\hyperlink{namespacekblib_a490acb8189530823cb6150afff35fc1c}{count\_digits}}(Number val)}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00051}00051     -\/> \mbox{\hyperlink{namespacekblib_a366272ad8baad19be4ccf8128afb04a3}{enable\_if\_t<std::is\_floating\_point<Number>::value}}, \textcolor{keywordtype}{int}> \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00052}00052    \textcolor{keywordflow}{if} (val == 0) \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00053}00053       \textcolor{keywordflow}{return} 1;}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00054}00054    \} \textcolor{keywordflow}{else} \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00055}00055       \textcolor{keywordflow}{return} std::numeric\_limits<Number>::digits10;}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00056}00056    \}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00057}00057 \}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00058}00058 }
\DoxyCodeLine{\Hypertarget{format_8h_source_l00066}00066 \textcolor{keyword}{template} <\textcolor{keyword}{typename} Number>}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00067}00067 \textcolor{keyword}{constexpr} \textcolor{keyword}{auto} \mbox{\hyperlink{namespacekblib_a490acb8189530823cb6150afff35fc1c}{count\_digits}}(Number val)}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00068}00068     -\/> enable\_if\_t<not std::is\_floating\_point<Number>::value}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00069}00069                        and std::is\_signed<Number>::value,}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00070}00070                    \textcolor{keywordtype}{int}> \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00071}00071    \textcolor{keywordflow}{if} (val == 0 or val == 1) \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00072}00072       \textcolor{keywordflow}{return} 1;}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00073}00073    \} \textcolor{keywordflow}{else} \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00074}00074       \textcolor{keywordflow}{return} \textcolor{keyword}{static\_cast<}\textcolor{keywordtype}{int}\textcolor{keyword}{>}(std::ceil(}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00075}00075                  std::nextafter(std::log10(std::fabs(val)), INFINITY)))}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00076}00076              + (val < 0);}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00077}00077    \}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00078}00078 \}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00079}00079 }
\DoxyCodeLine{\Hypertarget{format_8h_source_l00086}00086 \textcolor{keyword}{template} <\textcolor{keyword}{typename} Number>}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00087}00087 \textcolor{keyword}{constexpr} \textcolor{keyword}{auto} \mbox{\hyperlink{namespacekblib_a490acb8189530823cb6150afff35fc1c}{count\_digits}}(Number val)}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00088}00088     -\/> enable\_if\_t<std::is\_unsigned<Number>::value, \textcolor{keywordtype}{int}> \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00089}00089    \textcolor{keywordflow}{if} (val == 0) \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00090}00090       \textcolor{keywordflow}{return} 1;}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00091}00091    \} \textcolor{keywordflow}{else} \textcolor{keywordflow}{if} (val == \textcolor{keyword}{static\_cast<}Number\textcolor{keyword}{>}(-\/1)) \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00092}00092       \textcolor{keywordflow}{return} \textcolor{keyword}{static\_cast<}\textcolor{keywordtype}{int}\textcolor{keyword}{>}(std::ceil(std::log10(val)));}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00093}00093    \} \textcolor{keywordflow}{else} \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00094}00094       \textcolor{keywordflow}{return} \textcolor{keyword}{static\_cast<}\textcolor{keywordtype}{int}\textcolor{keyword}{>}(std::ceil(std::log10(val + 1)));}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00095}00095    \}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00096}00096 \}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00097}00097 }
\DoxyCodeLine{\Hypertarget{format_8h_source_l00106}00106 \textcolor{keyword}{template} <\textcolor{keyword}{typename} Number>}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00107}\mbox{\hyperlink{namespacekblib_a490acb8189530823cb6150afff35fc1c}{00107}} \textcolor{keyword}{constexpr} \textcolor{keyword}{auto} \mbox{\hyperlink{namespacekblib_a490acb8189530823cb6150afff35fc1c}{count\_digits}}(Number val, \textcolor{keywordtype}{int} base) -\/> \textcolor{keywordtype}{int} \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00108}00108    \textcolor{keywordflow}{if} (val == 0) \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00109}00109       \textcolor{keywordflow}{return} 1;}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00110}00110    \} \textcolor{keywordflow}{else} \textcolor{keywordflow}{if} (std::is\_floating\_point<Number>::value) \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00111}00111       \textcolor{keywordflow}{return} \textcolor{keyword}{static\_cast<}\textcolor{keywordtype}{int}\textcolor{keyword}{>}(}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00112}00112           std::ceil(std::numeric\_limits<Number>::digits * std::logb(base)));}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00113}00113    \} \textcolor{keywordflow}{else} \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00114}00114       \textcolor{keywordflow}{return} \textcolor{keyword}{static\_cast<}\textcolor{keywordtype}{int}\textcolor{keyword}{>}(}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00115}00115                  std::ceil(std::log(std::abs(val) + 1) / std::log(base)))}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00116}00116              + (val < 0);}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00117}00117    \}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00118}00118 \}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00119}00119 }
\DoxyCodeLine{\Hypertarget{format_8h_source_l00129}00129 \textcolor{keyword}{template} <\textcolor{keyword}{typename} ForwardIt>}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00130}\mbox{\hyperlink{namespacekblib_a5a05c4dad317da381751c694a4b69c52}{00130}} \textcolor{keyword}{auto} \mbox{\hyperlink{namespacekblib_a79bdc41eaf5235864ea333ebe30e7c36}{max\_count\_digits}}(ForwardIt first, ForwardIt last) -\/> \textcolor{keywordtype}{int} \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00131}00131    \textcolor{keywordflow}{if} (first == last) \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00132}00132       \textcolor{keywordflow}{return} 0;}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00133}00133    \}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00134}00134    \textcolor{keywordflow}{return} \mbox{\hyperlink{namespacekblib_a490acb8189530823cb6150afff35fc1c}{count\_digits}}(*\mbox{\hyperlink{namespacekblib_a85f026b89c516de43393ab0259c1c834}{std::max\_element}}(first, last));}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00135}00135 \}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00136}00136 }
\DoxyCodeLine{\Hypertarget{format_8h_source_l00147}00147 \textcolor{keyword}{template} <\textcolor{keyword}{typename} ForwardIt>}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00148}\mbox{\hyperlink{namespacekblib_a79bdc41eaf5235864ea333ebe30e7c36}{00148}} \textcolor{keyword}{auto} \mbox{\hyperlink{namespacekblib_a79bdc41eaf5235864ea333ebe30e7c36}{max\_count\_digits}}(ForwardIt first, ForwardIt last, \textcolor{keywordtype}{int} base) -\/> \textcolor{keywordtype}{int} \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00149}00149    \textcolor{keywordflow}{if} (first == last) \{}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00150}00150       \textcolor{keywordflow}{return} 0;}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00151}00151    \}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00152}00152    \textcolor{keywordflow}{return} \mbox{\hyperlink{namespacekblib_a490acb8189530823cb6150afff35fc1c}{count\_digits}}(*\mbox{\hyperlink{namespacekblib_a85f026b89c516de43393ab0259c1c834}{std::max\_element}}(first, last), base);}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00153}00153 \}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00154}00154 }
\DoxyCodeLine{\Hypertarget{format_8h_source_l00155}00155 \} \textcolor{comment}{// namespace KBLIB\_NS}}
\DoxyCodeLine{\Hypertarget{format_8h_source_l00156}00156 }
\DoxyCodeLine{\Hypertarget{format_8h_source_l00157}00157 \textcolor{preprocessor}{\#endif }\textcolor{comment}{// KBLIB\_FORMAT\_H}}

\end{DoxyCode}