Type Alias FoldStep<State>

Type Declaration

• • (
        state: State,
        index: number,
        run: number,
        inputs: readonly Float64Array[],
        outputs: readonly Float64Array[],
    ): void

  • Parameters

    • state: State

      The machine's own state, allocated once by the study and mutated in place — carried fields plus whatever configuration the step needs (multiplier, the acceleration step, …), so the step can be a top-level function with no closure to allocate.

    • index: number

      The row to read and write.

    • run: number

      How many consecutive complete rows end at index; 1 on the first bar of a fresh run (the series start, or the bar after a gap).

    • inputs: readonly Float64Array[]

      The row-aligned input columns, in the order given to foldRows. No cell at index is NaN — an infinite one still arrives, since only NaN marks a gap ([PND-STUDYBOX]).

    • outputs: readonly Float64Array[]

      The row-aligned output columns, pre-filled with NaN. A step that writes nothing leaves the warm-up in place.

    Returns void