Classe « dtype »

Méthode numpy.matlib.dtype.newbyteorder

Signature de la méthode newbyteorder

Description

newbyteorder.__doc__

newbyteorder(new_order='S', /)

    Return a new dtype with a different byte order.

    Changes are also made in all fields and sub-arrays of the data type.

    Parameters
    ----------
    new_order : string, optional
        Byte order to force; a value from the byte order specifications
        below.  The default value ('S') results in swapping the current
        byte order.  `new_order` codes can be any of:

        * 'S' - swap dtype from current to opposite endian
        * {'<', 'little'} - little endian
        * {'>', 'big'} - big endian
        * '=' - native order
        * {'|', 'I'} - ignore (no change to byte order)

    Returns
    -------
    new_dtype : dtype
        New dtype object with the given change to the byte order.

    Notes
    -----
    Changes are also made in all fields and sub-arrays of the data type.

    Examples
    --------
    >>> import sys
    >>> sys_is_le = sys.byteorder == 'little'
    >>> native_code = sys_is_le and '<' or '>'
    >>> swapped_code = sys_is_le and '>' or '<'
    >>> native_dt = np.dtype(native_code+'i2')
    >>> swapped_dt = np.dtype(swapped_code+'i2')
    >>> native_dt.newbyteorder('S') == swapped_dt
    True
    >>> native_dt.newbyteorder() == swapped_dt
    True
    >>> native_dt == swapped_dt.newbyteorder('S')
    True
    >>> native_dt == swapped_dt.newbyteorder('=')
    True
    >>> native_dt == swapped_dt.newbyteorder('N')
    True
    >>> native_dt == native_dt.newbyteorder('|')
    True
    >>> np.dtype('<i2') == native_dt.newbyteorder('<')
    True
    >>> np.dtype('<i2') == native_dt.newbyteorder('L')
    True
    >>> np.dtype('>i2') == native_dt.newbyteorder('>')
    True
    >>> np.dtype('>i2') == native_dt.newbyteorder('B')
    True