text: # Copyright 2019 Patrick Kidger. 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.
  # =========================================================================
  import signatory
  import torch
  
  
  def setup(obj):
      torch.set_num_threads(1)
  
      obj.path = torch.rand(obj.size, dtype=torch.float)
      obj.logsignature_instance = signatory.LogSignature(obj.depth)
      obj.logsignature_instance.prepare(obj.size[-1])
  
  
  def run(obj):
      return obj.logsignature_instance(obj.path)
  