Infinity
https://en.cppreference.com/w/cpp/numeric/math/INFINITY positive or negative
Negative Zero
-0.0
has some use cases like 1.0/0.0 INFINITY but 1.0/-0.0 -INFINITY
not-a-number(NaN)
does not compare with anything (including itself)
https://en.cppreference.com/w/cpp/numeric/math/INFINITY positive or negative
-0.0
has some use cases like 1.0/0.0 INFINITY but 1.0/-0.0 -INFINITY
does not compare with anything (including itself)