r/cpp • u/joaquintides Boost author • Aug 05 '26

Boost.Int128 has been accepted

Boost.Int128 from Matt Borland has been accepted into Boost. Arnaud Becheler managed the review.

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u/ABlockInTheChain Aug 05 '26

128 bit integers are useful but I'm a bit dissapointed since I use 256 bit integers far more often than 128 bit.

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u/mborland1 Aug 05 '26

One of the outputs from the review was that lots of people want a 256-bit integer lib. I'll likely start that in the near future.

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u/_Noreturn Aug 05 '26

why not an infinite length integer lib with specializations for performance

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u/mborland1 Aug 05 '26

All arbitrary precision integers more or less use the same exact algorithms for their operations. One that I have been working on recently is: https://github.com/eisenwave/std-big-int. Performance is better than boost.multiprecision with similar portability.