/*******************************************************************************
 * Copyright (c) 2015-2018 Skymind, Inc.
 *
 * 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.
 *
 * 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 Yurii Shyrma (iuriish@yahoo.com), created on 18.04.2018
//


#include<ops/declarable/helpers/meshgrid.h>
#include <array/ResultSet.h>
#include <numeric>

namespace nd4j 	  {
namespace ops 	  {
namespace helpers {


//////////////////////////////////////////////////////////////////////////

void meshgrid(nd4j::LaunchContext * context, const std::vector<NDArray*>& inArrs, const std::vector<NDArray*>& outArrs, const bool swapFirst2Dims) {

    const int rank = inArrs.size();
    int inIndices[MAX_RANK];
    std::iota(inIndices, inIndices + rank, 0);
    if(swapFirst2Dims && rank > 1) {
        inIndices[0] = 1;
        inIndices[1] = 0;
    }
            
    for(int i = 0; i < rank; ++i) {        
        auto list = outArrs[i]->allTensorsAlongDimension({inIndices[i]});
        for(int j = 0; j < list->size(); ++j)
            list->at(j)->assign(inArrs[i]);

        delete list;
    }
}

}
}
}

