Method prev

libraries/Set/Set.cpp:227–234

int Set::prev()
{
    if (_current & 0x8000) return -1;
    _current--;
    uint8_t p = (uint8_t)_current / 8;
    uint8_t q = (uint8_t)_current & 7;
    return findPrev(p, q);
}


int Set::last()