NFFT  3.3.1
api.h
00001 /*
00002  * Copyright (c) 2002, 2016 Jens Keiner, Stefan Kunis, Daniel Potts
00003  *
00004  * This program is free software; you can redistribute it and/or modify it under
00005  * the terms of the GNU General Public License as published by the Free Software
00006  * Foundation; either version 2 of the License, or (at your option) any later
00007  * version.
00008  *
00009  * This program is distributed in the hope that it will be useful, but WITHOUT
00010  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00011  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
00012  * details.
00013  *
00014  * You should have received a copy of the GNU General Public License along with
00015  * this program; if not, write to the Free Software Foundation, Inc., 51
00016  * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
00017  */
00018 
00024 #ifndef API_H
00025 #define API_H
00026 
00027 #include "config.h"
00028 #include "nfft3.h"
00029 
00034 /* "Default exponent of maximum bandwidth" */
00035 #define BWEXP_MAX 10
00036 
00037 /* "Default maximum bandwidth" */
00038 #define BW_MAX 1024
00039 
00040 #define ROW(k) (k*(wisdom.N_MAX+2))
00041 #define ROWK(k) (k*(wisdom.N_MAX+2)+k)
00042 
00043 #ifdef HAVE_STDBOOL_H
00044   #include <stdbool.h>
00045 #else
00046   typedef enum {false = 0,true = 1} bool;
00047 #endif
00048 
00049 //#define FIRST_L (int)floor(ntilde/(double)plength)
00050 //#define LAST_L (int)ceil((Mtilde+1)/(double)plength)-1
00051 
00052 
00056 struct nfsft_wisdom
00057 {
00059   bool initialized;
00060   unsigned int flags;
00063   int N_MAX;
00065   int T_MAX;
00066 
00067   /* Data for the direct algorithms */
00068 
00074   double *alpha;
00080   double *beta;
00086   double *gamma;
00087 
00088   /* Data for fast algorithms. */
00089 
00091   double threshold;
00092 #ifdef _OPENMP
00093   int nthreads;
00094   fpt_set *set_threads;
00095 #else
00096 
00097   fpt_set set;
00098 #endif
00099 };
00100 /* \} */
00101 #endif
00102