HelenOS sources

USB_HID_ITEM_FLAG_RELATIVE  183 uspace/drv/hid/usbhid/mouse/mousedev.c 	bool absolute_x = move_x && !USB_HID_ITEM_FLAG_RELATIVE(move_x->item_flags);
USB_HID_ITEM_FLAG_RELATIVE  184 uspace/drv/hid/usbhid/mouse/mousedev.c 	bool absolute_y = move_y && !USB_HID_ITEM_FLAG_RELATIVE(move_y->item_flags);
HelenOS homepage, sources at GitHub