# SPDX-FileCopyrightText: 2022-present deepset GmbH <info@deepset.ai>
#
# SPDX-License-Identifier: Apache-2.0

from numpy import exp


def expit(x) -> float:
    """
    Compute logistic sigmoid function. Maps input values to a range between 0 and 1

    :param x: input value. Can be a scalar or a numpy array.
    """
    return 1 / (1 + exp(-x))