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Add:

  • AddLower, PairwiseAdd/Sub, MaskedAbsOr, BitsFromMask
  • AVX10_2 and Loongson LASX/LSX targets
  • AVX3_SPR F16, WASM_EMU256 F64 types
  • CeilInt/FloorInt, DemoteToNearestInt and F16/F64 NearestInt
  • Complex number operations, F16/BF16 assignment operators
  • emulated bf16/f16 Load/StoreInterleaved
  • hwy::Warn/HWY_WARN, use instead of fprintf
  • HWY_UNREACHABLE, HWY_VISIT_TARGETS
  • i16 Dot, AverageRound, RoundingShiftRight/RoundingShr
  • InterleaveEvenBlocks/InterleaveOddBlocks, MinMagnitude/MaxMagnitude
  • masked comparisons, promote, round, GetBiasedExponent
  • MulByPow2/MulByFloorPow2, MulRound, MulLower/MulAddLower
  • PositiveInfOrHighestValue/NegativeInfOrLowestValue
  • RVV groundwork for runtime dispatch, enable tuples
  • spin wait, NanoSleep, Counter2/4 barrier, Divisor64, perf_counters

Improvements:

  • dpbf16 WidenMulPairwiseAdd Exp2, AVX10.2 float->int, AVX3 GetExponent
  • header-only abort.h/cc, tests runnable with Bazel8
  • HWY_BROKEN_*: allow individual override
  • Lanes: 'optional constexpr', AllBits1
  • MaskedEq/Ne, NEON SumOfMulQuadAccumulate, MaskedReduceMin/Max, MulEven
  • Profiler: report concurrency stats, 1.36x less overhead
  • RVV various ops via superoptimizer
  • SetThreadName: support more systems
  • SVE2 SatWidenMulPairwiseAccumulate, SSE2/SSSE3 U16 Min/Max
  • TargetName: no longer returns unknown for other arch
  • ThreadPool autotune, avoid WakeAll
  • topology: add NUMA node, support Windows/Apple

Fixes:

  • avoid wraparound for -ftrapv, topology for offline CPUs/RVV
  • warnings from -Wmissing-declarations/prototypes
  • AdvSIMD_HPFPCvt on OSX
  • f32->bf16 rounding: avoid unspecified built-in cast
  • MSAN, PPC InvariantTicksPerSecond on QEMU, HWY_RCAST_ALIGNED, IsNaN
  • vqsort for ascending order, add 8-bit test

Thanks to all contributors, especially johnplatts and eustas!

Source: README.md, updated 2025-08-14