_comp_t
const _comp_t *comp1 = v_comp1, *comp2 = v_comp2;
comps = (_comp_t *) malloc(comps_used * sizeof(_comp_t));
qsort(comps, comps_used, sizeof(_comp_t), cmpcomps);
static _comp_t *comps;
bytes = comps_used * sizeof(_comp_t);
fwrite((char *) comps, sizeof(_comp_t), comps_used, out);