Strange float behaviour on Arduino Mega

[gfvalvo]

@bojan_jurca

Thank you all. It seems that I can not use textual representation of floats for exact data exchange between C++ and Arduino. Maybe I'll just convert (byte-copy) them to 4-byte integers which can be converted to text without rounding problems.

That would probably be preferrable, especially since you already established that both systems have the same 4-byte binary representation for the same floating point value.

BTW, Arduino IS C++.