https://bugzilla.redhat.com/show_bug.cgi?id=2262752 Bug ID: 2262752 Summary: Review Request: ghc-bitwise - Fast multi-dimensional unboxed bit packed Bool arrays Product: Fedora Version: rawhide Status: NEW Component: Package Review Assignee: nobody@xxxxxxxxxxxxxxxxx Reporter: frank@xxxxxxxxxxx QA Contact: extras-qa@xxxxxxxxxxxxxxxxx CC: package-review@xxxxxxxxxxxxxxxxxxxxxxx Target Milestone: --- Classification: Fedora Spec URL: https://fdedden.fedorapeople.org/ghc-bitwise.spec SRPM URL: https://fdedden.fedorapeople.org/ghc-bitwise-1.0.0.1-1.fc40.src.rpm Description: Unboxed multidimensional bit packed Bool arrays with fast aggregate operations based on lifting Bool operations to bitwise operations. There are many other bit packed structures out there, but none met all of these requirements: (1) unboxed bit packed Bool array, (2) multi-dimensional indexing, (3) fast (de)serialization, or interoperable with foreign code, (4) fast aggregate operations (fold, map, zip). Quick tour of the bitwise library: [Data.Bits.Bitwise] Lift boolean operations on 'Bool' to bitwise operations on 'Data.Bits.Bits'. [Data.Array.BitArray] Immutable bit arrays. [Data.Array.BitArray.ST] Mutable bit arrays in 'Control.Monad.ST.ST'. [Data.Array.BitArray.IO] Mutable bit arrays in 'IO'. [Data.Array.BitArray.ByteString] (De)serialization. [Codec.Image.PBM] Portable bitmap monochrome 2D image format. Very rough performance benchmarks: * immutable random access single bit reads: 'BitArray ix' is about 40% slower than 'UArray ix Bool', * 'Control.Monad.ST.ST' mutable random access single bit reads: 'STBitArray s ix' is about the same as 'STUArray s ix Bool', * immutable map 'Bool -> Bool': 'BitArray ix' is about 85x faster than 'UArray ix Bool', * immutable zipWith 'Bool -> Bool -> Bool': 'BitArray ix' is about 1300x faster than 'UArray ix Bool'. Fedora Account System Username: fdedden -- You are receiving this mail because: You are always notified about changes to this product and component You are on the CC list for the bug. https://bugzilla.redhat.com/show_bug.cgi?id=2262752 Report this comment as SPAM: https://bugzilla.redhat.com/enter_bug.cgi?product=Bugzilla&format=report-spam&short_desc=Report%20of%20Bug%202262752%23c0 -- _______________________________________________ package-review mailing list -- package-review@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to package-review-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/package-review@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
