CODEWITHSUNDEEP
haskellbinary-databytestring
xuq01
xuq01

Reputation: 587

How to read a 5-byte thing into a `Word64` using `binary`?

Is it possible to read a 5-byte segment of data into a Word64 using the binary package, leaving the three higher-order bits empty? Or must I use a ByteString?

Upvotes: 2

Views: 213

Answers (1)

bergey
bergey

Reputation: 3081

Shift and bitwise-OR are in Data.Bits. Data.Binary.Get has a family of getWord functions that read fixed-length pieces from a ByteString of unknown length, without any interpretation beyond endian-ness. It may also help to know that fromIntegral for Word types preserves the unsigned-int interpretation of the Word (when going from smaller to larger words), so you can zero-extend a Word8 to a Word64.

Upvotes: 1

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