__bitcountl
} else if (__bitcountl(maxphys) != 1) { /* power of two */
__count += __bitcountl((p)->__bits[__i]); \
_value += __bitcountl(*_curbitstr & mask);
_value += __bitcountl(*_curbitstr);
_value += __bitcountl(*_curbitstr & mask);
#define bitcountl(x) __bitcountl((u_long)(x))