pkg-crc32/lib/ at trunk · mary.my.id/pkg-crc32 · Tangled

mary.my.id / pkg-crc32

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CRC-32/ISO-HDLC checksum

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pkg-crc32 / lib

1 file

at trunk

Mary refactor: switch crc32 to slicing-by-8 2mo ago

refactor: switch crc32 to slicing-by-8 the byte-at-a-time loop carried a per-iteration crc dependency that the JIT could not pipeline. with 7 additional precomputed tables, each 8-byte window resolves through 8 independent lookups XOR-reduced together, roughly doubling throughput on inputs ≥ 64 bytes. the byte loop is retained for the 0..7 byte tail.

2 months ago