clrbits
int setbits, clrbits, Xbits, op;
for (setbits = clrbits = Xbits = 0;; nset++) {
clrbits |= nset->bits;
clrbits &= ~nset->bits;
if (clrbits) {
set->bits = clrbits;
clrbits(sc, AO_RTC_REG3, AO_RTC_REG3_COUNT_ALWAYS);
clrbits(sc, AO_RTC_REG0, AO_RTC_REG0_SCLK);
clrbits(sc, AO_RTC_REG0, AO_RTC_REG0_SDI);
clrbits(sc, AO_RTC_REG0, AO_RTC_REG0_SEN);
clrbits(sc, AO_RTC_REG0, AO_RTC_REG0_SDI);
clrbits(sc, AO_RTC_REG0, AO_RTC_REG0_SDI);
clrbits(sc, AO_RTC_REG0,
clrbits(clp->c_cq, clp->c_cl - clp->c_cs, cc);
static void clrbits(u_char *, unsigned int, unsigned int);