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2026-07-13 12:40:42 +08:00

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// Copyright (c) 2024 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://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.
#pragma once
#include "paddle/phi/core/dense_tensor.h"
#include "paddle/phi/core/enforce.h"
namespace phi {
namespace funcs {
static inline std::vector<int32_t> GetOutputShape(const int axis,
const DDim &in_dims) {
if (in_dims.size() == 0) {
return {1};
}
int64_t outer = 1, inner = 1;
for (int i = 0; i < in_dims.size(); ++i) {
if (i < axis) {
if (in_dims[i] == -1 || outer == -1) {
outer = -1;
} else {
outer *= in_dims[i];
}
} else {
if (in_dims[i] == -1 || inner == -1) {
inner = -1;
} else {
inner *= in_dims[i];
}
}
}
std::vector<int32_t> out_shape(2);
out_shape[0] = static_cast<int32_t>(outer);
out_shape[1] = static_cast<int32_t>(inner);
return out_shape;
}
} // namespace funcs
} // namespace phi