J1/J2 cover transforms and convolution, K5 smoothing. General signal-data handling retains N without claiming a specific data-management operation.
Package dependencies
Resolved GitHub repositories used by the verified playground build, combining direct and indirect dependencies. This list does not describe internal module dependencies or native system libraries.
Discrete convolution; filtering and spectral estimation APIs remain broader package-level assignments. The checked J2 driver compares full and central results, including swapped inputs, with independent direct convolution for two length-37 signals and eight kernel lengths. It checks the actual central crop and longer-input output length at this pin.
One-dimensional real-input Fourier transform and inverse API. Checked driver covers rfft only: 42 forward transforms against direct trigonometric sums and Parseval energy, including odd/even lengths, zero padding and truncation. irfft is not verified; its source infers original length from half-spectrum length parity, which cannot encode both original parities.