pg_ceil_log2_32 pg_ceil_log2_64 pg_leftmost_one_pos pg_leftmost_one_pos32 pg_leftmost_one_pos64 pg_nextpower2_32 pg_nextpower2_64 pg_nextpower2_size_t pg_number_of_ones pg_popcount pg_popcount32 pg_popcount64 pg_prevpower2_32 pg_prevpower2_64 pg_prevpower2_size_t pg_rightmost_one_pos pg_rightmost_one_pos32 pg_rightmost_one_pos64 pg_rotate_right32

pg_popcount() uint64 pg_popcount ( const char *  buf, int  bytes  )