To Infinity and Beyond

• IEEE 754 reserves certain representations for extreme conditions:

Single Double

Exp Signif Exp Signif Meaning

0 0 0 0 Zero

0 nonzero 0 nonzero +/- unnormal

1-254 anything 1-2046 anything +/- floating p

255 0 2047 0 +/- infinity

255 nonzero 2047 nonzero NaN

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