fftw3.h

matlab可以方便地实现付利叶变换

			   int n2,					   \
			   R *in, C *out, unsigned flags);		   \
									   \
									   \
FFTW_EXTERN 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);				   \
									   \
FFTW_EXTERN X(plan) X(plan_dft_c2r)(int rank, const int *n,		   \
                        C *in, R *out, unsigned flags);			   \
									   \
FFTW_EXTERN X(plan) X(plan_dft_c2r_1d)(int n,C *in,R *out,unsigned flags); \
FFTW_EXTERN X(plan) X(plan_dft_c2r_2d)(int n0, int n1,			   \
			   C *in, R *out, unsigned flags);		   \
FFTW_EXTERN X(plan) X(plan_dft_c2r_3d)(int n0, int n1,			   \
			   int n2,					   \
			   C *in, R *out, unsigned flags);		   \
									   \
FFTW_EXTERN 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);				   \
FFTW_EXTERN 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);				   \
									   \
FFTW_EXTERN 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);				   \
FFTW_EXTERN 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);				   \
									   \
FFTW_EXTERN X(plan) X(plan_guru64_dft_r2c)(int rank,			   \
                             const X(iodim64) *dims,			   \
			     int howmany_rank,				   \
			     const X(iodim64) *howmany_dims,		   \
			     R *in, C *out,				   \
			     unsigned flags);				   \
FFTW_EXTERN X(plan) X(plan_guru64_dft_c2r)(int rank,			   \
                             const X(iodim64) *dims,			   \
			     int howmany_rank,				   \
			     const X(iodim64) *howmany_dims,		   \
			     C *in, R *out,				   \
			     unsigned flags);				   \
									   \
FFTW_EXTERN X(plan) X(plan_guru64_split_dft_r2c)(			   \
                             int rank, const X(iodim64) *dims,		   \
			     int howmany_rank,				   \
			     const X(iodim64) *howmany_dims,		   \
			     R *in, R *ro, R *io,			   \
			     unsigned flags);				   \
FFTW_EXTERN X(plan) X(plan_guru64_split_dft_c2r)(			   \
                             int rank, const X(iodim64) *dims,		   \
			     int howmany_rank,				   \
			     const X(iodim64) *howmany_dims,		   \
			     R *ri, R *ii, R *out,			   \
			     unsigned flags);				   \
									   \
FFTW_EXTERN void X(execute_dft_r2c)(const X(plan) p, R *in, C *out);	   \
FFTW_EXTERN void X(execute_dft_c2r)(const X(plan) p, C *in, R *out);	   \
									   \
FFTW_EXTERN void X(execute_split_dft_r2c)(const X(plan) p,		   \
                                          R *in, R *ro, R *io);		   \
FFTW_EXTERN void X(execute_split_dft_c2r)(const X(plan) p,		   \
                                          R *ri, R *ii, R *out);	   \
									   \
FFTW_EXTERN 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);	   \
									   \
FFTW_EXTERN X(plan) X(plan_r2r)(int rank, const int *n, R *in, R *out,	   \
                    const X(r2r_kind) *kind, unsigned flags);		   \
									   \
FFTW_EXTERN X(plan) X(plan_r2r_1d)(int n, R *in, R *out,		   \
                       X(r2r_kind) kind, unsigned flags);		   \
FFTW_EXTERN X(plan) X(plan_r2r_2d)(int n0, int n1, R *in, R *out,	   \
                       X(r2r_kind) kind0, X(r2r_kind) kind1,		   \
                       unsigned flags);					   \
FFTW_EXTERN X(plan) X(plan_r2r_3d)(int n0, int n1, int n2,		   \
                       R *in, R *out, X(r2r_kind) kind0,		   \
                       X(r2r_kind) kind1, X(r2r_kind) kind2,		   \
                       unsigned flags);					   \
									   \
FFTW_EXTERN 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);	   \
									   \
FFTW_EXTERN X(plan) X(plan_guru64_r2r)(int rank, const X(iodim64) *dims,   \
                         int howmany_rank,				   \
                         const X(iodim64) *howmany_dims,		   \
                         R *in, R *out,					   \
                         const X(r2r_kind) *kind, unsigned flags);	   \
									   \
FFTW_EXTERN void X(execute_r2r)(const X(plan) p, R *in, R *out);	   \
									   \
FFTW_EXTERN void X(destroy_plan)(X(plan) p);				   \
FFTW_EXTERN void X(forget_wisdom)(void);				   \
FFTW_EXTERN void X(cleanup)(void);					   \
									   \
FFTW_EXTERN void X(set_timelimit)(double);				   \
									   \
FFTW_EXTERN void X(plan_with_nthreads)(int nthreads);			   \
FFTW_EXTERN int X(init_threads)(void);					   \
FFTW_EXTERN void X(cleanup_threads)(void);				   \
									   \
FFTW_EXTERN void X(export_wisdom_to_file)(FILE *output_file);		   \
FFTW_EXTERN char *X(export_wisdom_to_string)(void);			   \
FFTW_EXTERN void X(export_wisdom)(void (*write_char)(char c, void *),	   \
                                  void *data);				   \
FFTW_EXTERN int X(import_system_wisdom)(void);				   \
FFTW_EXTERN int X(import_wisdom_from_file)(FILE *input_file);		   \
FFTW_EXTERN int X(import_wisdom_from_string)(const char *input_string);	   \
FFTW_EXTERN int X(import_wisdom)(int (*read_char)(void *), void *data);	   \
									   \
FFTW_EXTERN void X(fprint_plan)(const X(plan) p, FILE *output_file);	   \
FFTW_EXTERN void X(print_plan)(const X(plan) p);			   \
									   \
FFTW_EXTERN void *X(malloc)(size_t n);					   \
FFTW_EXTERN void X(free)(void *p);					   \
									   \
FFTW_EXTERN void X(flops)(const X(plan) p,				   \
                          double *add, double *mul, double *fmas);	   \
FFTW_EXTERN double X(estimate_cost)(const X(plan) p);			   \
									   \
FFTW_EXTERN const char X(version)[];					   \
FFTW_EXTERN const char X(cc)[];						   \
FFTW_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)

#define FFTW_NO_TIMELIMIT (-1.0)

/* 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_NO_DFT_R2HC (1U << 9)
#define FFTW_NO_NONTHREADED (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)
#define FFTW_NO_SLOW (1U << 18)
#define FFTW_NO_FIXED_RADIX_LARGE_N (1U << 19)
#define FFTW_ALLOW_PRUNING (1U << 20)
#define FFTW_WISDOM_ONLY (1U << 21)

#ifdef __cplusplus
}  /* extern "C" */
#endif /* __cplusplus */

#endif /* FFTW3_H */