space::irbem::OpqPositionFold
cheatah-space v0.1.0-alpha — Biome Standard 0.6.5-alpha
The batch's position caveat, accumulated one point at a time — the same fold ext_t89.hpp makes, for the same reason: one status for N points can only be the worst of them, and finding it must not cost a second pass over 100 MB of positions.
OP-77's envelope is a radius band, so the smallest and largest r^2 decide the batch and two check_position calls per CALL reproduce exactly what N of them would have said.
IrbemOpq.BatchReportsTheSameEnvelopeTheScalarLaneDoesFunctions
Fold one position in.
p | the position, GSM, in Earth radii. |
O(1) — one fused radius, two comparisons, no sqrt.
none.
IrbemOpq.BatchReportsTheSameEnvelopeTheScalarLaneDoesWhat the batch's positions say about the model's envelope.
Status::DomainError when any point is not finite or is inside the Earth, Status::OutOfValidityRange when any point is beyond 15 R_E, otherwise Status::Ok.
O(1) — two square roots and two envelope lookups for the whole batch.
none.
IrbemOpq.BatchReportsTheSameEnvelopeTheScalarLaneDoesConstants & variables
The smallest r^2 seen, R_E^2; +inf until the first point.
The largest r^2 seen, R_E^2; zero until the first point.
False once any point has had a non-finite coordinate.
Tracked separately because a NaN radius compares false against everything and would otherwise slip through both extremes.