// tensor/pattern-utils-inl.h

// Copyright 2019 Johns Hopkins University (author: Daniel Povey)

// See ../../COPYING for clarification regarding multiple authors

//

// 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

//

// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED

// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,

// MERCHANTABLITY OR NON-INFRINGEMENT.

// See the Apache 2 License for the specific language governing permissions and

// limitations under the License.

// Do not include this header directly; it is only to be included by pattern-utils.h.

#ifndef KALDI_TENSOR_TENSOR_PATTERN_UTILS_INL_H_

#define KALDI_TENSOR_TENSOR_PATTERN_UTILS_INL_H_ 1

namespace kaldi {

namespace tensor {

// See pattern-utils.h for documentation.

inline bool ContainsNegativeStride(const Pattern &pattern) {

// 2048 is 1 << 11; 11th bit in code is set if code indicates negative stride.

if (pattern.code >= 0 && (pattern.code | 2048) != 0)

return true;

int32 num_axes = pattern.num_axes;

for (int32 raxis = 0; raxis < num_axes; raxis++)

if (pattern.strides[raxis] < 0)

return true;

return false;

}

} // namespace tensor

} // namespace kaldi

#endif KALDI_TENSOR_TENSOR_PATTERN_UTILS_INL_H_