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lang-java
infinity.infinity, along with a reserved value meaning 'not a meaningfully computable number` (NAN). Some of the others may; you'd have to look at their documentation. Integer and scaled integer and related don't, of course. But generally real-world problems don't actually need INF or NAN except as error cases... unless you're writing a symbolic math package, in which case you mostly aren't going to be computing with numbers at all.