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