Function rootPrint

examples/isolated/reporting_matrices.cpp:17–28

void rootPrint(qindex num) {

    if (getQuESTEnv().rank != 0)
        return;

    std::cout << "\n\n>> set number of reported items to " << num;

    if (num == 0)
        std::cout << " (which means report all)";
         
    std::cout << "\n" << std::endl; // flush
}