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- import warnings
- # NB: Keep this file in sync with enums in aten/src/ATen/core/Reduction.h
- def get_enum(reduction: str) -> int:
- if reduction == "none":
- ret = 0
- elif reduction == "mean":
- ret = 1
- elif reduction == "elementwise_mean":
- warnings.warn(
- "reduction='elementwise_mean' is deprecated. "
- "Please use reduction='mean' instead.",
- stacklevel=2,
- )
- ret = 1
- elif reduction == "sum":
- ret = 2
- else:
- ret = -1 # TODO: remove once JIT exceptions support control flow
- raise ValueError(f"{reduction} is not a valid value for reduction")
- return ret
- # In order to support previous versions, accept boolean size_average and reduce
- # and convert them into the new constants for now
- # We use these functions in torch/legacy as well, in which case we'll silence the warning
- def legacy_get_string(
- size_average: bool | None,
- reduce: bool | None,
- emit_warning: bool = True,
- ) -> str:
- warning = "size_average and reduce args will be deprecated, please use reduction='{}' instead."
- if size_average is None:
- size_average = True
- if reduce is None:
- reduce = True
- if size_average and reduce:
- ret = "mean"
- elif reduce:
- ret = "sum"
- else:
- ret = "none"
- if emit_warning:
- warnings.warn(warning.format(ret), stacklevel=2)
- return ret
- def legacy_get_enum(
- size_average: bool | None,
- reduce: bool | None,
- emit_warning: bool = True,
- ) -> int:
- return get_enum(legacy_get_string(size_average, reduce, emit_warning))
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