def legweight(x):
w = x*<NUM_LIT:0.0> + <NUM_LIT:1.0><EOL>return w<EOL>
Weight function of the Legendre polynomials.

The weight function is :math:`1` and the interval of integration is
:math:`[-1, 1]`. The Legendre polynomials are orthogonal, but not
normalized, with respect to this weight function.

Parameters
----------
x : array_like
   Values at which the weight function will be computed.

Returns
-------
w : ndarray
   The weight function at `x`.

Notes
-----

.. versionadded::1.7.0