14 posts
OxiFFT 0.4.2 fixes a wrong-answer bug (not a precision bug) in the x86_64 SSE3 SIMD butterfly kernel that every non-AVX2 x86_64 CPU takes — a wrong complex-multiply lane order and twiddle-recurrence drift together failed 93 of 1447 tests by 10-100x the tolerance. Found by running the suite on x86_64 for the first time. Plus a Miri-driven pointer-provenance fix, four new soundness hardenings against attacker-influenceable wisdom strings, and a fuzz-harness tolerance bug of its own. Pure Rust FFT, no FFTW.
Pure Rust FFT and the rustfft replacement. OxiFFT 0.4.0 adds distributed real (r2c/c2r) MPI transforms, wires wisdom-based auto-tuning into MEASURE/PATIENT/EXHAUSTIVE planning so it really compares candidate algorithms, corrects the MSRV to 1.87, and ships a breaking cleanup of dead planner code plus a v2 wisdom binary format.
OxiFFT 0.4.1 is a small, focused release: it pulls in OxiCUDA 0.5.3, which fixes a race condition where async CUDA memory copies in oxicuda-fft could return before the transfer landed — risking silently corrupted or all-zero GPU transform results under load.
Pure Rust FFT and the rustfft replacement. OxiFFT 0.3.2 completes multi-rank MPI execution for the 3D pencil decomposition, gates AVX-512 codelets behind a default-off feature so the build stays clean on rustc 1.95 stable, hardens ND-plan error handling, and refreshes the OxiCUDA GPU backend.
Pure Rust FFT and the rustfft replacement: OxiFFT 0.3.1 adds Winograd mixed-radix Cooley-Tukey for smooth-7 sizes (retiring Bluestein for them), FFTW-style MEASURE/PATIENT auto-tuning with a binary wisdom format and an oxifft_tune CLI, plus an opt-in ndarray integration.
Pure Rust FFT and the rustfft replacement. OxiFFT 0.3.0 lands an FFT-based Makhoul DCT (~4× flop reduction), a 7-gate FFTW parity harness, GPU batch FFT with auto-chunking, 3D pencil MPI, a cache-oblivious 4-step transform, and real WASM SIMD v128 — 1360 tests passing, default build still 100% Rust.
OxiFFT, the Pure Rust FFT and rustfft replacement, turns runtime panics into compile-time errors: 0.2.0 makes 2D/3D and real plans Option-returning with honest types, ships a drop-in fftw-compat API to port C code, and adds Debug and #[must_use] across every plan type. 858 tests passing.
OxiFFT 0.1.4, the Pure Rust FFT and rustfft replacement, adds a full signal-processing module — Hilbert transform, Welch PSD, cepstrum, and FFT resampling — plus mel-spectrogram and MFCC audio analysis. No C, no Fortran, no FFTW.
SciRS2 is the pure-Rust SciPy/NumPy replacement. 0.2.0 restores the entire workspace to zero compile errors, makes Pure Rust OxiFFT the default FFT backend (rustfft now optional), rebuilds the neural stack, and ships the first WebAssembly bindings. ~11,400 tests, zero warnings. No C. No Fortran.
OxiFFT 0.1.3 is a correctness patch for the Pure Rust FFTW replacement: it eliminates an infinite-recursion bug in the size-512/1024/4096 SIMD fallback dispatch for non-f32/f64 element types, drops a redundant buffer allocation, and consolidates licensing to a single Apache-2.0 LICENSE.
OxiFFT 0.1.2 is a packaging patch for the Pure Rust FFTW replacement: it removes a stray examples/**/CLAUDE.md path that broke crate unpacking on Windows, restoring clean cross-platform installs and unblocking PyPI publishing for dependent crates like scirs2-python.
SciRS2 0.1.2 completes the Pure Rust journey — FFT migrates from FFTW to Pure Rust OxiFFT, plus zero-allocation SIMD ops and functional optimizers (SGD/Adam/RMSprop). 100% Pure Rust by default on OxiBLAS + OxiFFT. No C, no Fortran.
OxiFFT 0.1.1 is a maintenance patch for the Pure Rust FFTW replacement: hashbrown and spin bumped to their latest, the MSRV pin dropped to track current Rust, and 48 clippy warnings eliminated for a zero-warning build at 652 passing tests.
OxiFFT 0.1.0 debuts — a 99% Rust port of FFTW3. Complex/real transforms, DCT/DST, multi-dimensional and batch FFTs, runtime-dispatched SIMD, and 20+ features beyond RustFFT (Sparse FFT, STFT, NUFFT, autodiff, GPU, MPI, WASM). The spectral backbone for the SciRS2 numerical stack.