flopscope.accounting.norm_cost

shape:tuple

Shape of the array passed to the analytical cost formula.

ord:object, optional

Argument forwarded to the analytical linalg.norm cost formula. Defaults to None.

:int

Weighted public cost estimate, floored to match runtime accounting.

This helper multiplies the analytical FLOP count by the active weight from flopscope._weights and then applies int(...) so public estimates match budget deductions.

Cost depends on the ord parameter and input dimensionality.

• Elementwise norms (Frobenius, L1, Linf, etc.): numel (weight=1 baked in).

• SVD-based norms (2-norm, nuclear norm): 4 * m * n * min(m, n) (weight=4 baked in, consistent with linalg.svd weight=4).