pub const FUNCTIONS: &[FunctionEntry];Expand description
The registered QISP function set (plan §4.1). Ordered by family. A predicate over
two geometries takes (GeometryRef, GeometryRef); the trailing exactness selector
in the surface syntax (e.g. qisp:Exact) is a per-call modifier, not a descriptor
argument — the descriptor’s exactness is the registered default.