# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# the root directory of this source tree.

# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# top-level folder for each specific model found within the models/ directory at
# the top-level of this source tree.

import collections

import torch


def get_negative_inf_value(dtype):
    return torch.finfo(dtype).min


def to_2tuple(x):
    if isinstance(x, collections.abc.Iterable):
        return x
    return (x, x)