pub unsafe extern "C" fn DAQmxReadCtrFreq( taskHandle: TaskHandle, numSampsPerChan: int32, timeout: float64, interleaved: bool32, readArrayFrequency: *mut float64, readArrayDutyCycle: *mut float64, arraySizeInSamps: uInt32, sampsPerChanRead: *mut int32, reserved: *mut bool32) -> int32