__four_digits_quick
extern void __four_digits_quick(unsigned short, char *);
__four_digits_quick(d[i], tmp);
__four_digits_quick(d[i], ss);
__four_digits_quick(pf->bsignificand[i], s);
__four_digits_quick(pf->bsignificand[i], pd->ds + is);
__four_digits_quick(pf->bsignificand[i], s);
__four_digits_quick((unsigned short) n, estring);