wehub-resource-sync
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include "paddle/phi/common/scalar.h"
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#include "paddle/phi/kernels/funcs/for_range.h"
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#include "paddle/phi/kernels/funcs/math_function.h"
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namespace phi {
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template <typename T>
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struct EyeFunctor {
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EyeFunctor(int64_t num_columns, T* output)
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: num_columns_(num_columns), output_(output) {}
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HOSTDEVICE void operator()(size_t idx) const {
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output_[idx * num_columns_ + idx] = static_cast<T>(1);
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}
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int64_t num_columns_;
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T* output_;
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};
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template <typename T, typename Context>
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void EyeKernel(const Context& dev_ctx,
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const Scalar& num_rows,
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const Scalar& num_columns,
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DataType dtype UNUSED,
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DenseTensor* out) {
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auto columns = num_columns.to<int64_t>();
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auto rows = num_rows.to<int64_t>();
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if (columns == -1) {
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columns = rows;
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}
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T* out_data = dev_ctx.template Alloc<T>(out);
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funcs::SetConstant<Context, T> set_zero;
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set_zero(dev_ctx, out, static_cast<T>(0));
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int64_t num_eyes = (std::min)(rows, columns);
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funcs::ForRange<Context> for_range(dev_ctx, num_eyes);
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EyeFunctor<T> functor(columns, out_data);
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for_range(functor);
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}
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} // namespace phi
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