IEEE 754-2008 combined the IEEE 754 with the IEEE 854 decimal float standard, so hence any post-2008 IEEE 754 version also contains decimal float (and IEEE 854

IEEE 754-2008 combined the IEEE 754 with the IEEE 854 decimal float standard, so hence any post-2008 IEEE 754 version also contains decimal float (and IEEE 854 has been withdrawn). But like the parent poster noted, hardware tends to not actually implement the decimal float parts (I mean, IEEE 754 doesn't care about how calculations are made or how fast they are, so a software emulation is perfectly acceptable from the standard perspective). I think IBM POWER has one of the rare HW implementations of decimal floats.