devices/mouse/MouseInputDevice.cpp

572 	if (get_mouse_speed(fDeviceRef.name, &fSettings.accel.speed) != B_OK)
575 		if (get_mouse_acceleration(fDeviceRef.name, &fSettings.accel.accel_factor) != B_OK)
578 			mouse_accel accel;
579 			ioctl(fDevice, MS_GET_ACCEL, &accel);
580 			accel.speed = fSettings.accel.speed;
581 			accel.accel_factor = fSettings.accel.accel_factor;
582 			ioctl(fDevice, MS_SET_ACCEL, &fSettings.accel);
657 	float deltaX = (float)movements.xdelta * fSettings.accel.speed / 65536.0
659 	float deltaY = (float)movements.ydelta * fSettings.accel.speed / 65536.0
664 	if (fSettings.accel.accel_factor) {
666 			* fSettings.accel.accel_factor / 524288.0;