/***************************************************************************  **************************************************************************                  Spherical Harmonic Transform Kit 2.7       Contact: Peter Kostelec            geelong@cs.dartmouth.edu       Copyright 1997-2003  Sean Moore, Dennis Healy,                        Dan Rockmore, Peter Kostelec       Copyright 2004  Peter Kostelec, Dan Rockmore     SpharmonicKit 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.       SpharmonicKit 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., 675 Mass Ave, Cambridge, MA 02139, USA.       Commercial use is absolutely prohibited.     See the accompanying LICENSE file for details.    ************************************************************************  ************************************************************************/#ifndef _FFT_GRIDS_H#define _FFT_GRIDS_H#ifndef FFTPACKextern void grid_fourier( double * ,			  double * ,			  double * ,			  double * ,			  int ,			  double * );extern void grid_invfourier( double * ,			     double * ,			     double * ,			     double * ,			     int ,			     double * );#else    /* if FFTPACK *is* defined */extern double *precomp_fft( int );extern void grid_fourier_FFTPACK( double * ,				  int ,				  double * );extern void grid_invfourier_FFTPACK( double * ,				     int ,				     double * );#endif /* FFTPACK */#endif /* _FFT_GRIDS_H */