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Fonction remainder - module numpy.matlib

Signature de la fonction remainder

Description

remainder.__doc__

remainder(x1, x2, /, out=None, *, where=True, casting='same_kind', order='K', dtype=None, subok=True[, signature, extobj])

Return element-wise remainder of division.

Computes the remainder complementary to the `floor_divide` function.  It is
equivalent to the Python modulus operator``x1 % x2`` and has the same sign
as the divisor `x2`. The MATLAB function equivalent to ``np.remainder``
is ``mod``.

.. warning::

    This should not be confused with:

    * Python 3.7's `math.remainder` and C's ``remainder``, which
      computes the IEEE remainder, which are the complement to
      ``round(x1 / x2)``.
    * The MATLAB ``rem`` function and or the C ``%`` operator which is the
      complement to ``int(x1 / x2)``.

Parameters
----------
x1 : array_like
    Dividend array.
x2 : array_like
    Divisor array.
    If ``x1.shape != x2.shape``, they must be broadcastable to a common
    shape (which becomes the shape of the output).
out : ndarray, None, or tuple of ndarray and None, optional
    A location into which the result is stored. If provided, it must have
    a shape that the inputs broadcast to. If not provided or None,
    a freshly-allocated array is returned. A tuple (possible only as a
    keyword argument) must have length equal to the number of outputs.
where : array_like, optional
    This condition is broadcast over the input. At locations where the
    condition is True, the `out` array will be set to the ufunc result.
    Elsewhere, the `out` array will retain its original value.
    Note that if an uninitialized `out` array is created via the default
    ``out=None``, locations within it where the condition is False will
    remain uninitialized.
**kwargs
    For other keyword-only arguments, see the
    :ref:`ufunc docs <ufuncs.kwargs>`.

Returns
-------
y : ndarray
    The element-wise remainder of the quotient ``floor_divide(x1, x2)``.
    This is a scalar if both `x1` and `x2` are scalars.

See Also
--------
floor_divide : Equivalent of Python ``//`` operator.
divmod : Simultaneous floor division and remainder.
fmod : Equivalent of the MATLAB ``rem`` function.
divide, floor

Notes
-----
Returns 0 when `x2` is 0 and both `x1` and `x2` are (arrays of)
integers.
``mod`` is an alias of ``remainder``.

Examples
--------
>>> np.remainder([4, 7], [2, 3])
array([0, 1])
>>> np.remainder(np.arange(7), 5)
array([0, 1, 2, 3, 4, 0, 1])

The ``%`` operator can be used as a shorthand for ``np.remainder`` on
ndarrays.

>>> x1 = np.arange(7)
>>> x1 % 5
array([0, 1, 2, 3, 4, 0, 1])