\hypertarget{group__avr__math}{}\doxysubsection{$<$math.\+h$>$\+: Mathematics}
\label{group__avr__math}\index{$<$math.h$>$: Mathematics@{$<$math.h$>$: Mathematics}}
\doxysubsubsection*{Macros}
\begin{DoxyCompactItemize}
\item 
\#define \mbox{\hyperlink{group__avr__math_ga9bf5d952c5c93c70f9e66c9794d406c9}{M\+\_\+E}}~2.\+7182818284590452354
\end{DoxyCompactItemize}


\doxysubsubsection{Detailed Description}

\begin{DoxyCode}{0}
\DoxyCodeLine{\textcolor{preprocessor}{\#include <\mbox{\hyperlink{math_8h}{math.h}}>} }
\end{DoxyCode}


This header file declares basic mathematics constants and functions.

\begin{DoxyParagraph}{Notes\+:}

\begin{DoxyItemize}
\item In order to access the functions declared herein, it is usually also required to additionally link against the library {\ttfamily libm.\+a}. See also the related \mbox{\hyperlink{FAQ_faq_libm}{F\+AQ entry}}.
\item Math functions do not raise exceptions and do not change the {\ttfamily errno} variable. Therefore the majority of them are declared with const attribute, for better optimization by G\+CC. 
\end{DoxyItemize}
\end{DoxyParagraph}


\doxysubsubsection{Macro Definition Documentation}
\mbox{\Hypertarget{group__avr__math_ga9bf5d952c5c93c70f9e66c9794d406c9}\label{group__avr__math_ga9bf5d952c5c93c70f9e66c9794d406c9}} 
\index{$<$math.h$>$: Mathematics@{$<$math.h$>$: Mathematics}!M\_E@{M\_E}}
\index{M\_E@{M\_E}!$<$math.h$>$: Mathematics@{$<$math.h$>$: Mathematics}}
\doxyparagraph{\texorpdfstring{M\_E}{M\_E}}
{\footnotesize\ttfamily \#define M\+\_\+E~2.\+7182818284590452354}

The constant {\itshape e}. 