haojin2 commented on a change in pull request #17904: [Numpy] add: numpy op
trilindices
URL: https://github.com/apache/incubator-mxnet/pull/17904#discussion_r405196267
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File path: src/operator/numpy/np_matrix_op-inl.h
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@@ -287,6 +287,106 @@ void NumpyVstackBackward(const nnvm::NodeAttrs& attrs,
});
}
+struct NumpyTrilindicesParam : public dmlc::Parameter<NumpyTrilindicesParam> {
+ int n;
+ int k;
+ int m;
+ DMLC_DECLARE_PARAMETER(NumpyTrilindicesParam) {
+ DMLC_DECLARE_FIELD(n)
+ .describe("The row dimension of the arrays for which"
+ "the returned indices will be valid.");
+ DMLC_DECLARE_FIELD(k)
+ .set_default(0)
+ .describe("Diagonal offset");
+ DMLC_DECLARE_FIELD(m)
+ .describe("The column dimension of the arrays for "
+ "which the returned arrays will be valid."
+ "By default m is taken equal to n.");
+ }
+ void SetAttrDict(std::unordered_map<std::string, std::string>* dict) {
+ std::ostringstream n_s, k_s, m_s;
+ n_s << n;
+ k_s << k;
+ m_s << m;
+ (*dict)["n"] = n_s.str();
+ (*dict)["k"] = k_s.str();
+ (*dict)["m"] = m_s.str();
+ }
+};
+
+template<int req>
+struct TrilindicesOpForwardImpl {
+ template<typename DType>
+ MSHADOW_XINLINE static void Map(int i, DType* out_data0, DType* out_data1,
+ int* data, int length) {
+ KERNEL_ASSIGN(out_data0[i], req, data[i]);
+ KERNEL_ASSIGN(out_data1[i], req, data[i + length]);
+ }
+};
+
+template<typename xpu>
+void TrilindicesOpForward(const nnvm::NodeAttrs& attrs,
+ const OpContext& ctx,
Review comment:
alignment
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