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fftpack.h

00001 /*
00002  *  This file is part of Healpix_cxx.
00003  *
00004  *  Healpix_cxx is free software; you can redistribute it and/or modify
00005  *  it under the terms of the GNU General Public License as published by
00006  *  the Free Software Foundation; either version 2 of the License, or
00007  *  (at your option) any later version.
00008  *
00009  *  Healpix_cxx is distributed in the hope that it will be useful,
00010  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  *  GNU General Public License for more details.
00013  *
00014  *  You should have received a copy of the GNU General Public License
00015  *  along with Healpix_cxx; if not, write to the Free Software
00016  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00017  *
00018  *  For more information about HEALPix, see http://healpix.jpl.nasa.gov
00019  */
00020 
00021 /*
00022  *  Healpix_cxx is being developed at the Max-Planck-Institut fuer Astrophysik
00023  *  and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
00024  *  (DLR).
00025  */
00026 
00027 #ifndef PLANCK_FFTPACK_H
00028 #define PLANCK_FFTPACK_H
00029 
00030 #ifdef __cplusplus
00031 extern "C" {
00032 #endif
00033 
00034 /*! forward complex transform */
00035 void cfftf(int N, double complex_data[], double wrk[]);
00036 /*! backward complex transform */
00037 void cfftb(int N, double complex_data[], double wrk[]);
00038 /*! initializer for complex transforms */
00039 void cffti(int N, double wrk[]);
00040 
00041 /*! forward real transform */
00042 void rfftf(int N, double data[], double wrk[]);             
00043 /*! backward real transform */
00044 void rfftb(int N, double data[], double wrk[]);
00045 /*! initializer for real transforms */
00046 void rffti(int N, double wrk[]);
00047 
00048 #ifdef __cplusplus
00049 }
00050 #endif
00051 
00052 #endif

Generated on Fri Jul 8 09:37:13 2005 for LevelS FFT library