optimum/quanto/tensor/core.py

# Copyright 2024 The HuggingFace Team. 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 torch


__all__ = ["axis_to_dim", "dtype_info"]


def dtype_info(dtype):
    info = torch.finfo if dtype.is_floating_point else torch.iinfo
    return info(dtype)


def axis_to_dim(t, axis):
    dim = list(range(t.ndim))
    if axis == -1:
        dim = dim[:-1]
    else:
        dim.remove(axis)
    return dim