#define E 2.718281828459045235360287471352

[RobTillaart]

Can e be added to Arduino.h ?

define E = 2.718281828459045235360287471352

source - http://www.miniwebtool.com/first-n-digits-of-e/?number=30

I needed it today for a test and it was not supported where PI is

(ok lowest prio)

[ffissore]

Can the name be a little longer? Like EULER or E_EULER? I would like to avoid issues like #1735

[RobTillaart]

#1735: Agree, replacing all E's with 2.7... would be nasty.

I have found EULER as M_E in - http://www.nongnu.org/avr-libc/user-manual/group__avr__math.html -
(of course it is in math.h :)

For Arduino.h EULER is a good name, no need to include math.h for the beginners.

[jantje]

I don't want to be the bad guy but I think it should be
#define EULER 2.718281828459045235360287471352

instead of
#define EULER = 2.718281828459045235360287471352

[ffissore]

Thank you for being a bad guy. Shame on me. Fixed.

[RobTillaart]

#define Jantje right

[jantje]

blush