interp_poly opsignal × signal → signalimport fullseye as fs; fs.ledger.poly_eval(coeffs, x) (実装を直接呼ぶなら import mathops; mathops.poly_eval(coeffs, x)、台帳から引くなら opsmath.get("poly_eval"))Evaluate a polynomial (coefficients highest-power-first) at x.
coeffs is the 1-D array :func:poly_fit returns in "coeffs" (or any
hand-written one, [c_d, ..., c_1, c_0]); x is a finite scalar or 1-D
array. A scalar returns a Python float, an array returns float64.
Evaluation is by Horner’s scheme (np.polyval) — numerically the right
way to evaluate, though it cannot repair a badly-conditioned fit (see
:func:poly_fit’s cond).
HALCON: no polynomial tuple operator (compose tuple_pow + arithmetic).
Raises ValueError when a finite input overflows float64 — a degree-d
polynomial at |x| well above 1 grows like |x|**d, so mixing up the
two arguments (a long signal used as coefficients) silently produced inf
before this guard (chain fuzzer wave-7: 256 coefficients evaluated at
|x|<=22 -> 22**255). An unusable inf must not flow downstream.
mathops の全 op は入力を検証してから計算する(黙って通さない):
ValueError — float64 への強制変換は虚部を黙って捨てる(numpy は ComplexWarning だけ出して「もっともらしく間違った」実数を返す)。.real/.imag/abs() を明示するか、複素対応の complexops を使う。ValueError — マスクを剥がして下の生値を使う暗黙変換を拒否。埋める/落とすを明示する。ValueError(件数を明示して拒否 — 結果全体に伝播するため)。ValueError。reshape を明示する)。stat_histogram の bins は mathops.MAX_ELEMENTS(2^26 ≈ 6700 万要素)超で ValueError。py -3.11 examples/math_metrology.pypy -3.11 examples/signal_filter.pysignal を入力に取れる)mat_solve · mat_lstsq · stat_describe · stat_histogram · stat_zscore · interp_linear · interp_cubic · interp_scattered
interp_poly)interp_linear · interp_cubic · interp_scattered · poly_fit · poly_roots
Provenance: mathops.py — MATH operator registry. この per-op ノートは tools/opdocs.py md が自動生成(手編集しない)。
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.