ValueError for pixel values greater than than 256 ** 3

While processing a tif with very large no data value, i get this error:

`ValueError: Data of 3.4028234663852886e+38 larger than 256 ** 3`

A little unexpected since there is no documentation of this limitation.

Reproduce the failure with a TIFF containing the reported large no-data value, then trace where pixel values are checked against 256 ** 3. The issue names no files or tests; done should establish the intended handling or documented limitation for such values and add coverage for the observed case.

Written by the indexing model from the issue text.