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``pynfft.util`` - Utility functions
===================================
.. automodule:: pynfft.util
Functions used for initialization of :class:`pynfft.NFFT` attributes in test
scripts. For instance::
>>> from pynfft.util import vrand_unit_complex, vrand_shifted_unit_double
>>> x = np.empty(20, dtype=np.float64)
>>> vrand_shifted_unit_double(x)
>>> f_hat = np.empty(16, dtype=np.complex128)
>>> vrand_unit_complex(f_hat)
.. autofunction:: pynfft.util.vrand_unit_complex(x)
.. autofunction:: pynfft.util.vrand_shifted_unit_double(x)
Functions used for computing the density compensation weights necessary for the
iterative solver and adjoint NFFT.
.. autofunction:: pynfft.util.voronoi_weights_1d(w, x)
.. autofunction:: pynfft.util.voronoi_weights_S2(w, xi)
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