EVDEV_LONG_BITS 36 ui/events/ozone/evdev/event_device_info.cc return (bits[bit / EVDEV_LONG_BITS] & (1UL << (bit % EVDEV_LONG_BITS))); EVDEV_LONG_BITS 15 ui/events/ozone/evdev/event_device_info.h #define EVDEV_BITS_TO_LONGS(x) (((x) + EVDEV_LONG_BITS - 1) / EVDEV_LONG_BITS)