replace float division with float multiplication in printFloat ==> 208 bytes less

+ replaced an int by an uint8_t ==> 6 bytes less

void Print::printFloat(double number, uint8_t digits)

{

// Handle negative numbers

if (number < 0.0)

{

print('-');

number = -number;

}

// Round correctly so that print(1.999, 2) prints as "2.00"

double rounding = 0.5;

for (uint8_t i=0; i<digits; ++i)

rounding *= 0.1;

// rounding /= 10.0; // <<<<<<<<<<<<<< more expensive than multiplication * 0.1

number += rounding;

// Extract the integer part of the number and print it

unsigned long int_part = (unsigned long)number;

double remainder = number - (double)int_part;

print(int_part);

// Print the decimal point, but only if there are digits beyond

if (digits > 0)

print(".");

// Extract digits from the remainder one at a time

while (digits-- > 0)

{

remainder *= 10.0;

uint8_t toPrint = uint8_t (remainder); // <<<<<<<<<<<<<<<< for 1 digit a byte is enough...

print(toPrint, DEC);

remainder -= toPrint;

}

}

Sofar, in total

~~310 ~~300 bytes less by looking carefully to the datatypes and operations in the print.cpp file

updated some numbers after a failing test.