content: /*
   * Tencent is pleased to support the open source community by making Angel available.
   *
   * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * https://opensource.org/licenses/Apache-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License
   * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
   * or implied. See the License for the specific language governing permissions and limitations under
   * the License.
   *
   */
  
  
  package com.tencent.angel.ml.math2.ufuncs.executor.matrix;
  
  import com.tencent.angel.exception.AngelException;
  import com.tencent.angel.ml.math2.matrix.BlasDoubleMatrix;
  import com.tencent.angel.ml.math2.matrix.BlasFloatMatrix;
  import com.tencent.angel.ml.math2.matrix.Matrix;
  import com.tencent.angel.ml.math2.matrix.RowBasedMatrix;
  import com.tencent.angel.ml.math2.ufuncs.expression.Unary;
  
  public class UnaryMatrixExecutor {
  
    public static Matrix apply(Matrix mat, Unary op) {
      if (mat instanceof BlasDoubleMatrix) {
        return apply((BlasDoubleMatrix) mat, op);
      } else if (mat instanceof BlasFloatMatrix) {
        return apply((BlasFloatMatrix) mat, op);
      } else if (mat instanceof RowBasedMatrix) {
        return ((RowBasedMatrix) mat).calulate(op);
      } else {
        throw new AngelException("The operation is not supported!");
      }
    }
  
    private static Matrix apply(BlasDoubleMatrix mat, Unary op) {
      double[] data = mat.getData();
      int size = mat.getNumRows() * mat.getNumCols();
      if (op.isInplace()) {
        for (int i = 0; i < size; i++) {
          data[i] = op.apply(data[i]);
        }
        return mat;
      } else {
        double[] newData = new double[size];
        for (int i = 0; i < size; i++) {
          newData[i] = op.apply(data[i]);
        }
        return new BlasDoubleMatrix(mat.getMatrixId(), mat.getClock(), mat.getNumRows(),
            mat.getNumCols(), newData);
      }
    }
  
    private static Matrix apply(BlasFloatMatrix mat, Unary op) {
      float[] data = mat.getData();
      int size = mat.getNumRows() * mat.getNumCols();
      if (op.isInplace()) {
        for (int i = 0; i < size; i++) {
          data[i] = op.apply(data[i]);
        }
        return mat;
      } else {
        float[] newData = new float[size];
        for (int i = 0; i < size; i++) {
          newData[i] = op.apply(data[i]);
        }
        return new BlasFloatMatrix(mat.getMatrixId(), mat.getClock(), mat.getNumRows(),
            mat.getNumCols(), newData);
      }
    }
  }