pub unsafe extern "C" fn PhidgetDCMotor_setTargetVelocity_async(
ch: PhidgetDCMotorHandle,
targetVelocity: f64,
fptr: Phidget_AsyncCallback,
ctx: *mut c_void,
)pub unsafe extern "C" fn PhidgetDCMotor_setTargetVelocity_async(
ch: PhidgetDCMotorHandle,
targetVelocity: f64,
fptr: Phidget_AsyncCallback,
ctx: *mut c_void,
)