Function pamoja_kalman_update 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pamoja_kalman_update(
    kalman: *mut PamojaKalman,
    reading: f32,
) -> f32

Folds a reading into a Kalman filter and returns the new estimate.

Returns

The updated estimate, or NaN if kalman is null.

Safety

kalman must be a live handle from pamoja_kalman_new, or null.