PFFT - Parallel FFT based on FFTW

Overview
--------
PFFT is a software library written in C for computing parallel fast Fourier  
transformations. 




# TODO: Change the following lines of NFFTs README appropriately to PFFT
# 
# 
# For an introduction, please read the "NFFT 3.0 - Tutorial" first. It is 
# available in the subdirectory doc/tutorial/tutorial.pdf. Detailed API 
# documentation can be found in HTML format in /doc/api/html/index.html
# or in LaTeX format for self compilation in /doc/api/latex/refman.tex.
# For installation instructions, you can also refer to the file INSTALL
# in this directory.
# 
# The most current general paper, and the one that we recommend if you wish 
# to cite NFFT, is: The paper by Keiner, J., Kunis, S., and Potts, D. 
# ''Using NFFT 3 - a software library for various nonequispaced fast Fourier transforms'' 
# ACM Trans. Math. Software, accepted. 
# 
# Directory structure
# -------------------
# 3rdparty (dir)		Third-party source code
# aclocal.m4		Macros for configure script
# applications (dir)	Application programs (see 4) above)
# AUTHORS			Information about the authors of NFFT3
# bootstrap.sh		Bootstrap shell script that call Autoconf and friends
# ChangeLog		A short version history
# config.guess		Used by configure script
# config.sub		Used by configure script
# configure		Configure script
# configure.in		Autoconf configure script template
# COPYING			Information about redistributing NFFT3
# depcomp			Used by configure script
# doc (dir)		User and developer documentation
# examples (dir)		Simple examples for using NFFT3 routines
# include (dir)		Header files
# INSTALL			Installation instructions
# install-sh		Used by configure script
# kernel (dir)		Source code for core library routines
# ltmain.sh		Used by configure script
# Makefile.am		Automake Makefile template
# Makefile.in		Makefile template generated from Makefile.am,
#                         processed by configure script
# missing			Used by configure script
# NEWS			New and noteworthy
# README			This file
# TODO			Current work to be done
# util (dir)		Source code for auxilliary routines
# 
# Feedback
# --------
# Your comments are welcome! This is the third version of the library and may
# not be as robust or well documented as it should be. Please keep track of bugs
# or missing/confusing instructions and report them to
# 
#   Prof. Dr. Daniel Potts <potts@mathematik.tu-chemnitz.de>
#   TU Chemnitz, Fakultaet fuer Mathematik
#   Reichenhainer Str. 39
#   09107 Chemnitz, GERMANY
# 
# or
# 
#   Stefan Kunis           <kunis@mathematik.tu-chemnitz.de>
#   Jens Keiner            <keiner@math.uni-luebeck.de>
# 
# If you find NFFT3 useful, we would be delighted to hear about what application
# you are using NFFT3 for!
# 
# Legal Information & Credits
# ---------------------------
# Copyright (C) 2002-2009 Daniel Potts
# 
# This software was written by Jens Keiner, Stefan Kunis and Daniel Potts.
# It was developed at the Mathematical Institute, University of
# Luebeck, and at the Faculty of Mathematics, Chemnitz University of Technology.
# 
# NFFT3 is free software. You can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version. If not stated otherwise, this applies to all files contained in this
# package and its sub-directories. 
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
# 
