google-research

1
// Copyright 2024 The Google Research Authors.
2
//
3
// Licensed under the Apache License, Version 2.0 (the "License");
4
// you may not use this file except in compliance with the License.
5
// You may obtain a copy of the License at
6
//
7
//     http://www.apache.org/licenses/LICENSE-2.0
8
//
9
// Unless required by applicable law or agreed to in writing, software
10
// distributed under the License is distributed on an "AS IS" BASIS,
11
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12
// See the License for the specific language governing permissions and
13
// limitations under the License.
14

15
#include "sparse/ops/cc/csr2idx_launcher.h"
16

17
namespace sgk {
18

19
void LaunchCsr2idx(const Eigen::ThreadPoolDevice &d, int m, int n, int nonzeros,
20
                   const int *row_offsets, const int *column_indices,
21
                   int *linear_indices) {
22
  for (int i = 0; i < m; ++i) {
23
    for (int l = row_offsets[i]; l < row_offsets[i + 1]; ++l) {
24
      linear_indices[l] = column_indices[l] * i * n;
25
    }
26
  }
27
}
28

29
}  // namespace sgk
30