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Infinite and undefined

The expression engine in the relation function handles infinite (∞, -∞) and undefined values (⦵) as numbers.

Expression Result
1 / 0 ∞
∞ + 1 ∞
∞ + ⦵ ⦵
⦵ + 1 ⦵
0 / 0 ⦵
∞ * 0 0
⦵ * 0 ⦵
sqrt(-1) ⦵

∞ and -∞ are logical true and ⦵ is logical false.