Function abs

imperative/python/megengine/functional/elemwise.py:557–589

r"""Element-wise :math:`\operatorname{abs}(x)` function. Calculates the absolute value for each element :math:`x_i` of the input tensor :math:`x`. (i.e., the element-wise result has the same magnitude as the respective element in x but has positive sign). Args: x: input ten

(x)

def abs(x):
    r"""Element-wise :math:`\operatorname{abs}(x)` function.
    
    Calculates the absolute value for each element :math:`x_i` of the input tensor :math:`x`.
    (i.e., the element-wise result has the same magnitude as the respective element in x but has positive sign).

    Args:
        x: input tensor. Should have a numeric data type.

    Returns:

        a tensor containing the absolute value of each element in :math:`x`.
        The returned tensor must have the same data type as :math:`x`.
    
    .. admonition:: Special cases

       For floating-point operands,

       * If :math:`x_i` is ``NaN``, the result is ``NaN``.
       * If :math:`x_i` is ``-0``, the result is ``+0``.
       * If :math:`x_i` is ``-infinity``, the result is ``+infinity``.

    Examples:
        >>> F.abs(-2)
        Tensor(2, dtype=int32, device=xpux:0)

        Element-wise absolution:

        >>> x = Tensor([1, -2, 3, -4, 5])
        >>> F.abs(x)
        Tensor([1 2 3 4 5], dtype=int32, device=xpux:0)  
    """
    return _elwise(x, mode=Elemwise.Mode.ABS)


def exp(x):