GCSWEEPMAX
for (i = 0; i < GCSWEEPMAX && g->sweepstrgc + i < g->strt.size; i++)
g->sweepfin = sweeplist(L, g->sweepfin, GCSWEEPMAX);
return GCSWEEPMAX*GCSWEEPCOST;
g->sweepgc = sweeplist(L, g->sweepgc, GCSWEEPMAX);
return GCSWEEPMAX*GCSWEEPCOST;