Design Decisions

lob's shape is a set of deliberate trade-offs, each recorded on its own page. Claims here are qualitative: exact sizes, tolerances, and measured figures live in the code and tests, where the compiler and CI keep them honest.

C ABI narrow waist: one implementation, every language.
Strong unit types: wrong units fail to compile.
No dynamic allocation: suit targets that forbid the heap.
Builder pattern: name what you know; the rest is defaulted and validated.
Heun integration: second-order steps, per BRL experience.
Performance posture: speed from modeling, measured per trajectory.
Shared angle solver: one routine serves zero and inverse alike.