v3.11.1: Matching N3322 for `memcpy` UB in C2y

Release: v3.11.1 [skip ci]

Patch

• Fix: Matching N3322 for memcpy UB in C2y (14ee92c)

v3.11.0: Checksums in AVX-512, AVX2, NEON

• 🆕 sz_checksum(char const *, size_t) C 99 interface
• 🆕 sz::str().checksum() C++ 11 interface
• 🆕 sz.checksum(str) Python interface

Database and other Systems Engineers, you can now use StringZilla to dynamically dispatch different check-sum kernels for AVX2 capable Haswell+ CPUs, AVX-512BW capable Ice Lake+ CPUs, and Arm NEON CPUs on mobile. In AVX-512, masked loads are used extensively, resulting in a 10% improvement even on typical English words, averaging 5 bytes in length and 20x performance improvement compared to the serial code for longer strings.

On the technical side, on x86, the kernels use the well-known SAD(text, zeros) idiom to accumulate absolute differences between individual bytes into 64-bit words. It also uses bidirectional traversal to saturate the core, capable of performing 2 loads per CPU cycle. Moreover, on large inputs, it switches to streaming loads, separately handling the head and the tail, similar to our memcpy alternative, also outperforming LibC on AVX-512-capable machines 😎

Minor

• Add: Checksums in Python (1b77de9)
• Add: Checksum tests (c2b997c)
• Add: Checksum kernels (a99337b)

Patch

• Docs: Simpler Python doc-strings (ad5fa2c)
• Fix: sz_checksum visibility (9bec0eb)
• Fix: Missing _mm_cvtsi128_si64x in Clang (c8c6c7c)

Release v3.10.11

Release: v3.10.11 [skip ci]

Patch

• Make: Pin cibuildwheel==2.21.3 (592034c)
• Make: Bump TinySemVer CI (358f4ad)
• Fix: Missing C++ function-objects (4be9409)
• Fix: Equality check on NEON (#197) (705fb5e)
• Improve: Longer equality check (2af873a)

Release v3.10.10

Release: v3.10.10 [skip ci]

Release v3.10.9

Release: v3.10.9 [skip ci]

Release v3.10.8

Release: v3.10.8 [skip ci]

Release v3.10.7

Release: v3.10.7 [skip ci]

Release v3.10.6

Release: v3.10.6 [skip ci]

Release v3.10.5

Release: v3.10.5 [skip ci]

Release v3.10.4

Release: v3.10.4 [skip ci]