Resize an existing bit set to be capable of holding ni_new integers. Elements in [ni_old,ni_new) are added to the set if fill != 0. Need to clear excess bits when fill!=0 or n_new<n; always is simpler.
See Implementation
Resize an existing bit set to be capable of holding ni_new integers. Elements in [ni_old,ni_new) are added to the set if fill != 0. Need to clear excess bits when fill!=0 or n_new<n; always is simpler.