rconfig_prelude

用于FFT,来自MIT的源码

/*
 * Copyright (c) 1997-1999 Massachusetts Institute of Technology
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

/* rconfig.c -- this file contains all the real-complex codelets
                the system knows about */

#include <fftw-int.h>
#include <rfftw.h>

#define NOTW_CODELET(x) \
	 &fftw_real2hc_##x##_desc
#define NOTWI_CODELET(x) \
	 &fftw_hc2real_##x##_desc

#define TWIDDLE_CODELET(x) \
	 &fftw_hc2hc_forward_##x##_desc
#define TWIDDLEI_CODELET(x) \
	 &fftw_hc2hc_backward_##x##_desc

/* automatically-generated list of codelets */