IVGCVSW-4246 Clean build of backends with -Wextra
[platform/upstream/armnn.git] / src / backends / reference / workloads / Gather.cpp
1 //
2 // Copyright © 2017 Arm Ltd. All rights reserved.
3 // SPDX-License-Identifier: MIT
4 //
5
6 #include "Gather.hpp"
7
8 #include "RefWorkloadUtils.hpp"
9
10 #include <backendsCommon/WorkloadData.hpp>
11
12 #include <boost/core/ignore_unused.hpp>
13 #include <boost/numeric/conversion/cast.hpp>
14
15 namespace armnn
16 {
17
18 void Gather(const TensorInfo& paramsInfo,
19             const TensorInfo& indicesInfo,
20             const TensorInfo& outputInfo,
21             Decoder<float>& params,
22             const int32_t* indices,
23             Encoder<float>& output)
24 {
25     boost::ignore_unused(outputInfo);
26     const TensorShape& paramsShape = paramsInfo.GetShape();
27
28     unsigned int paramsProduct = 1;
29     for (unsigned int i = 1; i < paramsInfo.GetNumDimensions(); ++i)
30     {
31         paramsProduct = paramsProduct * paramsShape[i];
32     }
33
34     unsigned int outIndex = 0;
35     for (unsigned int i = 0; i < indicesInfo.GetNumElements(); ++i)
36     {
37         unsigned int indx = boost::numeric_cast<unsigned int>(indices[i]);
38
39         BOOST_ASSERT(indices[i] >= 0 && indx < paramsShape[0]);
40
41         unsigned int startOffset = indx * paramsProduct;
42         unsigned int endOffset = startOffset + paramsProduct;
43
44         for (unsigned int j = startOffset; j < endOffset; ++j)
45         {
46             params[j];
47             float outputValue = params.Get();
48             output[outIndex];
49             output.Set(outputValue);
50             ++outIndex;
51         }
52     }
53
54     BOOST_ASSERT(outIndex == outputInfo.GetNumElements());
55 }
56
57 } //namespace armnn