Function solve_broadcast 

pub fn solve_broadcast(
    broadcast: &BroadcastEphemeris,
    inputs: &SolveInputs,
    with_geodetic: bool,
) -> Result<ReceiverSolution, SppError>

Solve a receiver position from broadcast ephemeris ALONE: the supported real-time / offline single-point-positioning mode.

This is the explicit broadcast-only entry point. Broadcast ephemeris decoded from the navigation message is always available and needs no network, so this is the path a receiver uses when no precise product is on hand. It is a thin, named wrapper over the generic solve: a BroadcastEphemeris is an EphemerisSource, so the result is bit-for-bit identical to calling solve(&broadcast, inputs, with_geodetic). Taking the concrete BroadcastEphemeris makes the broadcast-only contract explicit in the type system rather than relying on the caller to pass the right source.

The store can come from a parsed RINEX navigation file (BroadcastEphemeris::from_nav) or from records decoded straight off the air via BroadcastRecord::from_lnav and BroadcastEphemeris::new, which closes the lnav::decode -> broadcast source half of the real-time pipeline.