text: /* ******************************************************************************
   *
   *
   * This program and the accompanying materials are made available under the
   * terms of the Apache License, Version 2.0 which is available at
   * https://www.apache.org/licenses/LICENSE-2.0.
   *
   *  See the NOTICE file distributed with this work for additional
   *  information regarding copyright ownership.
   * 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.
   *
   * SPDX-License-Identifier: Apache-2.0
   ******************************************************************************/
  
  //
  //  @author Adam Gibson
  //
  
  #include <system/op_boilerplate.h>
  #if NOT_EXCLUDED(OP_choose)
  
  #include <helpers/ShapeUtils.h>
  #include <ops/declarable/CustomOperations.h>
  #include <ops/declarable/helpers/choose.h>
  
  namespace sd {
      namespace ops {
          CUSTOM_OP_IMPL(choose, -1, 2, false, -2, -1) {
  
              int mode = INT_ARG(0);
              auto result = OUTPUT_VARIABLE(0);
              auto numResults = OUTPUT_VARIABLE(1);
  
              if (block.width() > 1) {
                  auto arg = INPUT_VARIABLE(0);
                  auto comp = INPUT_VARIABLE(1);
  
                  helpers::chooseFunctorArray(block.launchContext(), arg, comp, mode, result, numResults);
  
              }//scalar case
              else {
                  double scalar = T_ARG(0);
                  auto arg = INPUT_VARIABLE(0);
                  helpers::chooseFunctorScalar(block.launchContext(), arg, scalar, mode, result, numResults);
              }
  
  
              return Status::OK();
          }
  
          DECLARE_TYPES(choose) {
              getOpDescriptor()
                      ->setAllowedInputTypes(0, {ALL_FLOATS})
                      ->setAllowedInputTypes(1, {ALL_FLOATS})
                      ->setAllowedOutputTypes(0, {ALL_FLOATS})
                      ->setAllowedOutputTypes(1, {ALL_INTS});
          }
  
          DECLARE_SHAPE_FN(choose) {
              Nd4jLong const* shape;
              int rank;
              int mode = INT_ARG(0);
              auto numResults = NDArrayFactory::create<Nd4jLong>(0L);
              if(block.width() > 1) {
                  auto first = INPUT_VARIABLE(0);
                  auto second = INPUT_VARIABLE(1);
                  if(first->lengthOf() > second->lengthOf()) {
                      shape = first->shapeInfo();
                      rank = first->rankOf();
                  }
                  else {
                      shape = second->shapeInfo();
                      rank = second->rankOf();
                  }
  
                  helpers::chooseFunctorArray(block.launchContext(), first, second, mode, nullptr, &numResults);
              }
              else {
                  auto first = INPUT_VARIABLE(0);
                  shape = first->shapeInfo();
                  rank = first->rankOf();
                  double scalar = T_ARG(0);
  
                  helpers::chooseFunctorScalar(block.launchContext(), first, scalar, mode, nullptr, &numResults);
              }
  
              auto newShape = ConstantShapeHelper::getInstance().vectorShapeInfo(numResults.e<Nd4jLong>(0), ArrayOptions::dataType(inputShape->at(0)));
  
              auto shapeScalar = ConstantShapeHelper::getInstance().scalarShapeInfo(sd::DataType::INT64);
              return SHAPELIST(newShape, shapeScalar);
          }
  
  
      }
  }
  
  #endif