make_heap (xsrt->initial_runs, xsrt->run_cnt, sizeof *xsrt->initial_runs,
compare_initial_runs, NULL);
dummy_run_cnt = mod (1 - (int) xsrt->run_cnt, max_order - 1);
make_heap (xsrt->initial_runs, xsrt->run_cnt, sizeof *xsrt->initial_runs,
compare_initial_runs, NULL);
dummy_run_cnt = mod (1 - (int) xsrt->run_cnt, max_order - 1);