@George McGinn -- limitations of variable types. Floating point numbers have a representation for NAN; Integers don't.
In 32-bit floats, NAN is stored as: 0x7fc00000.
First bit is 0 for sign.
Next 8 bits are set for a value of 255. (Special)
Mantissa is 1 with all zeroes...
Which represents NAN.
Integers don't have such an encoding built into them, thus integer division doesn't return it as a result.
https://gregstoll.com/~gregstoll/floattohex/
