It's interesting that the parent comment came up in the context of the chip used in TI calculators. I know the TI-83 series floating point format is BCD [1], b

It's interesting that the parent comment came up in the context of the chip used in TI calculators. I know the TI-83 series floating point format is BCD [1], but I'm not sure off the top of my head whether the built-in floating-point library actually uses these CPU instructions. [1] (PDF link) http://education.ti.com/guidebooks/sdk/83p/sdk83pguide.pdf http://education.ti.com/guidebooks/sdk/83p/sdk83pguide.pdf see pages 22-23