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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include "BaseIterator.hpp"
#include <armnn/Tensor.hpp>
#include <functional>
namespace armnn
{
struct BroadcastLoop
{
BroadcastLoop(const TensorShape& inShape0, const TensorShape& inShape1, const TensorShape& outShape);
unsigned int GetNumDimensions()
{
return static_cast<unsigned int>(m_DimData.size());
}
template <typename Func, typename DecoderOp, typename EncoderOp>
void Unroll(Func operationFunc,
unsigned int dimension,
DecoderOp& inData0,
DecoderOp& inData1,
EncoderOp& outData)
{
if (dimension >= GetNumDimensions())
{
outData.Set(operationFunc(inData0.Get(), inData1.Get()));
return;
}
unsigned int inData0Movement = 0;
unsigned int inData1Movement = 0;
unsigned int outDataMovement = 0;
for (unsigned int i = 0; i < m_DimData[dimension].m_DimSize; i++)
{
Unroll(operationFunc, dimension + 1, inData0, inData1, outData);
inData0 += m_DimData[dimension].m_Stride1;
inData1 += m_DimData[dimension].m_Stride2;
outData += m_DimData[dimension].m_StrideOut;
inData0Movement += m_DimData[dimension].m_Stride1;
inData1Movement += m_DimData[dimension].m_Stride2;
outDataMovement += m_DimData[dimension].m_StrideOut;
}
// move iterator back to the start
inData0 -= inData0Movement;
inData1 -= inData1Movement;
outData -= outDataMovement;
}
private:
// Struct to hold the dimension data.
struct BroadcastDimensionData
{
unsigned int m_DimSize;
unsigned int m_StrideOut;
unsigned int m_Stride1;
unsigned int m_Stride2;
};
std::vector<BroadcastDimensionData> m_DimData;
};
} //namespace armnn
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