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<?php var_dump(NAN, NAN < NAN, NAN > NAN, NAN > 0.0, NAN < 0.0, NAN == NAN /* the only comparison that seems correct */); echo "\n----\n\n"; var_dump(INF, INF < INF, INF > INF, INF == INF);

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39.09 ms | 402 KiB | 5 Q