deriv Design

Use this page to explain the structural responsibilities and implementation constraints of this module. deriv in Luna-Flow/calculus-numerical.

Responsibilities

• Keep the code and docs aligned around src/deriv.
• Preserve the real execution model instead of smoothing over important internal differences.
• Note extension points, invariants, and limitations that maintainers must keep stable.

Maintenance Notes

• Update this page whenever the module boundary, core algorithm, or observable semantics change.
• If the module is intentionally incomplete, say so here instead of documenting speculative APIs.