message: Fix for //tensorflow/python/kernel_tests/signal:mel_ops_test
diff: @@ -45,9 +45,7 @@ def _mel_to_hertz(mel_values, name=None):
  """
  with ops.name_scope(name, 'mel_to_hertz', [mel_values]):
  mel_values = ops.convert_to_tensor(mel_values)
  - return _MEL_BREAK_FREQUENCY_HERTZ * (
  - math_ops.exp(mel_values / _MEL_HIGH_FREQUENCY_Q) - 1.0
  - )
  + return _MEL_BREAK_FREQUENCY_HERTZ * math_ops.expm1(mel_values / _MEL_HIGH_FREQUENCY_Q)
  def _hertz_to_mel(frequencies_hertz, name=None):
  @@ -63,8 +61,7 @@ def _hertz_to_mel(frequencies_hertz, name=None):
  """
  with ops.name_scope(name, 'hertz_to_mel', [frequencies_hertz]):
  frequencies_hertz = ops.convert_to_tensor(frequencies_hertz)
  - return _MEL_HIGH_FREQUENCY_Q * math_ops.log(
  - 1.0 + (frequencies_hertz / _MEL_BREAK_FREQUENCY_HERTZ))
  + return _MEL_HIGH_FREQUENCY_Q * math_ops.log1p(frequencies_hertz / _MEL_BREAK_FREQUENCY_HERTZ)
  def _validate_arguments(num_mel_bins, sample_rate,
  