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 /*! \file bluestein.h 00026 * Interface for the Bluestein algorithm 00027 * 00028 * Copyright (C) 2005 Max-Planck-Society 00029 * \author Martin Reinecke 00030 */ 00031 00032 #ifndef PLANCK_BLUESTEIN_H 00033 #define PLANCK_BLUESTEIN_H 00034 00035 #include "c_utils.h" 00036 00037 #ifdef __cplusplus 00038 extern "C" { 00039 #endif 00040 00041 size_t prime_factor_sum (size_t n); 00042 00043 void bluestein_i (size_t n, double **tstorage, size_t *worksize); 00044 void bluestein (size_t n, double *data, double *tstorage, int isign); 00045 00046 #ifdef __cplusplus 00047 } 00048 #endif 00049 00050 #endif