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#[cxx::bridge(namespace = "apache_datasketches_rs")]
pub mod ffi {
/// Named `TupleJaccardBoundsFfi` rather than `JaccardBoundsFfi` because
/// cxx emits one C++ definition per shared type into the bridge namespace,
/// and the theta bridge already emits
/// `apache_datasketches_rs::JaccardBoundsFfi`.
struct TupleJaccardBoundsFfi {
lower_bound: f64,
estimate: f64,
upper_bound: f64,
}
unsafe extern "C++" {
include!("array_of_doubles_sketch_shim.h");
include!("array_of_doubles_compact_shim.h");
include!("array_of_doubles_jaccard_shim.h");
type ArrayOfDoublesSketchShim =
crate::array_of_doubles_sketch::ffi::ArrayOfDoublesSketchShim;
type CompactArrayOfDoublesSketchShim =
crate::array_of_doubles_compact::ffi::CompactArrayOfDoublesSketchShim;
// Named `tuple_jaccard_*` rather than `jaccard_*` because cxx derives
// each function's extern "C" trampoline symbol from just the C++
// namespace and function name (not the argument types or the
// originating bridge module), so a same-named free function declared
// in the theta bridge (see `theta_jaccard.rs`) would silently
// collide at link time when both bridges are compiled into the same
// binary (i.e. under `--all-features`) — the two overloads are
// distinguishable to C++ but not to cxx's trampoline naming, and the
// linker picks one definition for both call sites, causing the
// wrong shim type to be reinterpreted at runtime.
fn tuple_jaccard_sketch_sketch(
a: &ArrayOfDoublesSketchShim,
b: &ArrayOfDoublesSketchShim,
) -> TupleJaccardBoundsFfi;
fn tuple_jaccard_sketch_compact(
a: &ArrayOfDoublesSketchShim,
b: &CompactArrayOfDoublesSketchShim,
) -> TupleJaccardBoundsFfi;
fn tuple_jaccard_compact_sketch(
a: &CompactArrayOfDoublesSketchShim,
b: &ArrayOfDoublesSketchShim,
) -> TupleJaccardBoundsFfi;
fn tuple_jaccard_compact_compact(
a: &CompactArrayOfDoublesSketchShim,
b: &CompactArrayOfDoublesSketchShim,
) -> TupleJaccardBoundsFfi;
}
}