Is it possible to check if a
float is a positive zero (0.0) or a negative zero (-0.0)?
I’ve converted the
float to a
String and checked if the first
char is a
'-', but are there any other ways?
Yes, divide by it.
1 / +0.0f is
1 / -0.0f is
-Infinity. It’s easy to find out which one it is with a simple comparison, so you get:
if (1 / x > 0) // +0 here else // -0 here
(this assumes that
x can only be one of the two zeroes)