// Calculate the number of predictions for a dataset with a given number of rows and iterations. public long CalcNumPredict(int numRow, PredictType predType, int numIteration) { long outLen = 0L; PInvokeException.Check(PInvoke.BoosterCalcNumPredict(Handle, numRow, (PInvoke.CApiPredictType)predType, 0, numIteration, ref outLen), nameof(PInvoke.BoosterCalcNumPredict)); return outLen; }