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/*
* Copyright (c) 2003 Matteo Frigo
* Copyright (c) 2003 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
*
*/
/* header file for fftw3 */
/* $Id: fftw3.h,v 1.1 2008/10/17 06:10:47 scuri Exp $ */
#ifndef FFTW3_H
#define FFTW3_H
#include <stdio.h>
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
/* If <complex.h> is included, use the C99 complex type. Otherwise
define a type bit-compatible with C99 complex */
#ifdef _Complex_I
# define FFTW_DEFINE_COMPLEX(R, C) typedef R _Complex C
#else
# define FFTW_DEFINE_COMPLEX(R, C) typedef R C[2]
#endif
#define FFTW_CONCAT(prefix, name) prefix ## name
#define FFTW_MANGLE_DOUBLE(name) FFTW_CONCAT(fftw_, name)
#define FFTW_MANGLE_FLOAT(name) FFTW_CONCAT(fftwf_, name)
#define FFTW_MANGLE_LONG_DOUBLE(name) FFTW_CONCAT(fftwl_, name)
enum fftw_r2r_kind_do_not_use_me {
FFTW_R2HC=0, FFTW_HC2R=1, FFTW_DHT=2,
FFTW_REDFT00=3, FFTW_REDFT01=4, FFTW_REDFT10=5, FFTW_REDFT11=6,
FFTW_RODFT00=7, FFTW_RODFT01=8, FFTW_RODFT10=9, FFTW_RODFT11=10
};
struct fftw_iodim_do_not_use_me {
int n; /* dimension size */
int is; /* input stride */
int os; /* output stride */
};
/*
huge second-order macro that defines prototypes for all API
functions. We expand this macro for each supported precision
X: name-mangling macro
R: real data type
C: complex data type
*/
#define FFTW_DEFINE_API(X, R, C) \
\
FFTW_DEFINE_COMPLEX(R, C); \
\
typedef struct X(plan_s) *X(plan); \
\
typedef struct fftw_iodim_do_not_use_me X(iodim); \
\
typedef enum fftw_r2r_kind_do_not_use_me X(r2r_kind); \
\
void X(execute)(const X(plan) p); \
\
X(plan) X(plan_dft)(int rank, const int *n, \
C *in, C *out, int sign, unsigned flags); \
\
X(plan) X(plan_dft_1d)(int n, C *in, C *out, int sign, \
unsigned flags); \
X(plan) X(plan_dft_2d)(int nx, int ny, \
C *in, C *out, int sign, unsigned flags); \
X(plan) X(plan_dft_3d)(int nx, int ny, int nz, \
C *in, C *out, int sign, unsigned flags); \
\
X(plan) X(plan_many_dft)(int rank, const int *n, \
int howmany, \
C *in, const int *inembed, \
int istride, int idist, \
C *out, const int *onembed, \
int ostride, int odist, \
int sign, unsigned flags); \
\
X(plan) X(plan_guru_dft)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
C *in, C *out, \
int sign, unsigned flags); \
X(plan) X(plan_guru_split_dft)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *ri, R *ii, R *ro, R *io, \
unsigned flags); \
\
void X(execute_dft)(const X(plan) p, C *in, C *out); \
void X(execute_split_dft)(const X(plan) p, R *ri, R *ii, R *ro, R *io); \
\
X(plan) X(plan_many_dft_r2c)(int rank, const int *n, \
int howmany, \
R *in, const int *inembed, \
int istride, int idist, \
C *out, const int *onembed, \
int ostride, int odist, \
unsigned flags); \
\
X(plan) X(plan_dft_r2c)(int rank, const int *n, \
R *in, C *out, unsigned flags); \
\
X(plan) X(plan_dft_r2c_1d)(int n,R *in,C *out,unsigned flags); \
X(plan) X(plan_dft_r2c_2d)(int nx, int ny, \
R *in, C *out, unsigned flags); \
X(plan) X(plan_dft_r2c_3d)(int nx, int ny, \
int nz, \
R *in, C *out, unsigned flags); \
\
\
X(plan) X(plan_many_dft_c2r)(int rank, const int *n, \
int howmany, \
C *in, const int *inembed, \
int istride, int idist, \
R *out, const int *onembed, \
int ostride, int odist, \
unsigned flags); \
\
X(plan) X(plan_dft_c2r)(int rank, const int *n, \
C *in, R *out, unsigned flags); \
\
X(plan) X(plan_dft_c2r_1d)(int n,C *in,R *out,unsigned flags); \
X(plan) X(plan_dft_c2r_2d)(int nx, int ny, \
C *in, R *out, unsigned flags); \
X(plan) X(plan_dft_c2r_3d)(int nx, int ny, \
int nz, \
C *in, R *out, unsigned flags); \
\
X(plan) X(plan_guru_dft_r2c)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *in, C *out, \
unsigned flags); \
X(plan) X(plan_guru_dft_c2r)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
C *in, R *out, \
unsigned flags); \
\
X(plan) X(plan_guru_split_dft_r2c)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *in, R *ro, R *io, \
unsigned flags); \
X(plan) X(plan_guru_split_dft_c2r)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *ri, R *ii, R *out, \
unsigned flags); \
\
void X(execute_dft_r2c)(const X(plan) p, R *in, C *out); \
void X(execute_dft_c2r)(const X(plan) p, C *in, R *out); \
\
void X(execute_split_dft_r2c)(const X(plan) p, R *in, R *ro, R *io); \
void X(execute_split_dft_c2r)(const X(plan) p, R *ri, R *ii, R *out); \
\
X(plan) X(plan_many_r2r)(int rank, const int *n, \
int howmany, \
R *in, const int *inembed, \
int istride, int idist, \
R *out, const int *onembed, \
int ostride, int odist, \
const X(r2r_kind) *kind, unsigned flags); \
\
X(plan) X(plan_r2r)(int rank, const int *n, R *in, R *out, \
const X(r2r_kind) *kind, unsigned flags); \
\
X(plan) X(plan_r2r_1d)(int n, R *in, R *out, \
X(r2r_kind) kind, unsigned flags); \
X(plan) X(plan_r2r_2d)(int nx, int ny, R *in, R *out, \
X(r2r_kind) kindx, X(r2r_kind) kindy, \
unsigned flags); \
X(plan) X(plan_r2r_3d)(int nx, int ny, int nz, \
R *in, R *out, X(r2r_kind) kindx, \
X(r2r_kind) kindy, X(r2r_kind) kindz, \
unsigned flags); \
\
X(plan) X(plan_guru_r2r)(int rank, const X(iodim) *dims, \
int howmany_rank, \
const X(iodim) *howmany_dims, \
R *in, R *out, \
const X(r2r_kind) *kind, unsigned flags); \
void X(execute_r2r)(const X(plan) p, R *in, R *out); \
\
void X(destroy_plan)(X(plan) p); \
void X(forget_wisdom)(void); \
void X(cleanup)(void); \
\
void X(plan_with_nthreads)(int nthreads); \
int X(init_threads)(void); \
void X(cleanup_threads)(void); \
\
void X(export_wisdom_to_file)(FILE *output_file); \
char *X(export_wisdom_to_string)(void); \
void X(export_wisdom)(void (*write_char)(char c, void *), void *data); \
int X(import_system_wisdom)(void); \
int X(import_wisdom_from_file)(FILE *input_file); \
int X(import_wisdom_from_string)(const char *input_string); \
int X(import_wisdom)(int (*read_char)(void *), void *data); \
\
void X(fprint_plan)(const X(plan) p, FILE *output_file); \
void X(print_plan)(const X(plan) p); \
\
void *X(malloc)(size_t n); \
void X(free)(void *p); \
\
void X(flops)(const X(plan) p, double *add, double *mul, double *fma); \
\
extern const char X(version)[]; \
extern const char X(cc)[]; \
extern const char X(codelet_optim)[];
/* end of FFTW_DEFINE_API macro */
FFTW_DEFINE_API(FFTW_MANGLE_DOUBLE, double, fftw_complex)
FFTW_DEFINE_API(FFTW_MANGLE_FLOAT, float, fftwf_complex)
FFTW_DEFINE_API(FFTW_MANGLE_LONG_DOUBLE, long double, fftwl_complex)
#define FFTW_FORWARD (-1)
#define FFTW_BACKWARD (+1)
/* documented flags */
#define FFTW_MEASURE (0U)
#define FFTW_DESTROY_INPUT (1U << 0)
#define FFTW_UNALIGNED (1U << 1)
#define FFTW_CONSERVE_MEMORY (1U << 2)
#define FFTW_EXHAUSTIVE (1U << 3) /* NO_EXHAUSTIVE is default */
#define FFTW_PRESERVE_INPUT (1U << 4) /* cancels FFTW_DESTROY_INPUT */
#define FFTW_PATIENT (1U << 5) /* IMPATIENT is default */
#define FFTW_ESTIMATE (1U << 6)
/* undocumented beyond-guru flags */
#define FFTW_ESTIMATE_PATIENT (1U << 7)
#define FFTW_BELIEVE_PCOST (1U << 8)
#define FFTW_DFT_R2HC_ICKY (1U << 9)
#define FFTW_NONTHREADED_ICKY (1U << 10)
#define FFTW_NO_BUFFERING (1U << 11)
#define FFTW_NO_INDIRECT_OP (1U << 12)
#define FFTW_ALLOW_LARGE_GENERIC (1U << 13) /* NO_LARGE_GENERIC is default */
#define FFTW_NO_RANK_SPLITS (1U << 14)
#define FFTW_NO_VRANK_SPLITS (1U << 15)
#define FFTW_NO_VRECURSE (1U << 16)
#define FFTW_NO_SIMD (1U << 17)
#ifdef __cplusplus
} /* extern "C" */
#endif /* __cplusplus */
#endif /* FFTW3_H */
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