libmath-int128-perl - 0.22-5+b2 main

Math::Int128 adds support for 128 bit integers, signed and unsigned, to Perl.
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The API is comparable to Math::Int64, just s/64/128/g ;-)
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Besides that, as object allocation and destruction has been found to be a
bottleneck, an alternative set of operations that use their first argument as
the output (instead of the return value) is also provided.