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ahbarnett committed Aug 20, 2018
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10 changes: 5 additions & 5 deletions docs/index.rst
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.. finufft documentation master file, created by
sphinx-quickstart on Wed Nov 1 16:19:13 2017.
.. finufft documentation master file.
You can adapt this file completely to your liking, but it should at least
contain the root `toctree` directive.
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distributions and/or high precision.
Our library does not require precomputation, and uses minimal RAM.

For the case of small problems where repeated NUFFTs are needed with a fixed set of nonuniform points, we have started to build interfaces for this case.
For the case of small problems where repeated NUFFTs are needed with a fixed set of nonuniform points, we have started to build advanced
interfaces for this case.
These are a factor of 2 or more faster than repeated calls to the plain
interface, since certain costs such as FFTW setup and sorted are performed
only once; see the advanced usage.
interface, since certain costs such as FFTW setup and sorting are performed
only once.

.. note::

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4 changes: 3 additions & 1 deletion docs/refs.rst
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References for this software and the underlying mathematics include:

[FIN] FINUFFT: a fast and lightweight nonuniform fast Fourier transform library. A. H. Barnett and J. F. Magland. In preparation (2017).
[FIN]
A parallel non-uniform fast Fourier transform library based on an ``exponential of semicircle'' kernel.
A. H. Barnett, J. F. Magland, and L. af Klinteberg. Preprint (2018).
[ORZ] Prolate Spheroidal Wave Functions of Order Zero: Mathematical Tools for Bandlimited Approximation. A. Osipov, V. Rokhlin, and H. Xiao. Springer (2013).
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4 changes: 3 additions & 1 deletion docs/usage.rst
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Expand Up @@ -5,7 +5,9 @@ Here we describe calling FINUFFT from C++, C, and Fortran.

We provide Type 1 (nonuniform to uniform), Type 2 (uniform to
nonuniform), and Type 3 (nonuniform to nonuniform), in dimensions 1,
2, and 3. This gives nine routines in all.
2, and 3. This gives nine basic routines.
There are also two :ref:`advanced interfaces <manyinterface>`
for multiple 2d1 and 2d2 transforms with the same point locations.

Using the library is a matter of filling your input arrays,
allocating the correct output array size, possibly setting fields in
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