Method run

src/modules/linalg/metric.cpp:339–359

* @brief Compute the minimum distance between a vector and any column of a * matrix * * This function calls a user-supplied function, for which it does not do * garbage collection. It is therefore meant to be called only constantly many * times before control is returned to the backend. */

 * times before control is returned to the backend.
 */
AnyType
closest_column::run(AnyType& args) {
    //if (true) throw std::runtime_error("Begin cc run\n");
    try{
        MappedMatrix M = args[0].getAs<MappedMatrix>();
        MappedColumnVector x = args[1].getAs<MappedColumnVector>();
        FunctionHandle dist = args[2].getAs<FunctionHandle>()
            .unsetFunctionCallOptions(FunctionHandle::GarbageCollectionAfterCall);
        string dist_fname = args[3].getAs<char *>();
        std::string fname = dist_fn_name(dist_fname);
        std::tuple<Index, double> result;
        closestColumnsAndDistancesShortcut(M, x, dist, fname, &result, &result + 1);

        AnyType tuple;
        return tuple
            << static_cast<int32_t>(std::get<0>(result))
            << std::get<1>(result);
    }catch (const ArrayWithNullException &e) {
        return Null();
    }
}

AnyType
closest_column_fixed::run(AnyType& args) {