IS_EPIN           209 third_party/libusb/src/libusb/libusbi.h #define IS_EPOUT(ep) (!IS_EPIN(ep))
IS_EPIN          3119 third_party/libusb/src/libusb/os/windows_usb.c 				if (IS_EPIN(priv->usb_interface[i].endpoint[j])