fftpack.h

00001 /*
00002  *  This file is part of libfftpack.
00003  *
00004  *  libfftpack 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  *  libfftpack 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 libfftpack; if not, write to the Free Software
00016  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00017  */
00018 
00019 /*
00020  *  libfftpack is being developed at the Max-Planck-Institut fuer Astrophysik
00021  *  and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
00022  *  (DLR).
00023  */
00024 
00025 #ifndef PLANCK_FFTPACK_H
00026 #define PLANCK_FFTPACK_H
00027 
00028 #ifdef __cplusplus
00029 extern "C" {
00030 #endif
00031 
00032 /*! forward complex transform */
00033 void cfftf(int N, double complex_data[], double wrk[]);
00034 /*! backward complex transform */
00035 void cfftb(int N, double complex_data[], double wrk[]);
00036 /*! initializer for complex transforms */
00037 void cffti(int N, double wrk[]);
00038 
00039 /*! forward real transform */
00040 void rfftf(int N, double data[], double wrk[]);             
00041 /*! backward real transform */
00042 void rfftb(int N, double data[], double wrk[]);
00043 /*! initializer for real transforms */
00044 void rffti(int N, double wrk[]);
00045 
00046 #ifdef __cplusplus
00047 }
00048 #endif
00049 
00050 #endif