gaussian-splatting-my/envs/gaussian_splatting/Library/include/fftw/rfftw.h

/*******************************************************************************
!   Copyright (c) 2003 Matteo Frigo
!   Copyright (c) 2003 Massachusetts Institute of Technology
!
!   This program is distributed with permission
!
!*******************************************************************************/

/* rfftw.h -- system-wide definitions for rfftw */
#ifndef RFFTW_H
#define RFFTW_H

#include "fftw.h"

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

/****************************************************************************/

#define RFFTW_V2

typedef fftw_plan rfftw_plan;
typedef fftwnd_plan rfftwnd_plan;

#define FFTW_REAL_TO_COMPLEX FFTW_FORWARD
#define FFTW_COMPLEX_TO_REAL FFTW_BACKWARD

extern void rfftw(rfftw_plan plan, int howmany, fftw_real *in, int istride,
		  int idist, fftw_real *out, int ostride, int odist);
extern void rfftw_one(rfftw_plan plan, fftw_real *in, fftw_real *out);

extern rfftw_plan rfftw_create_plan_specific(int n, fftw_direction dir,
					    int flags,
					    fftw_real *in, int istride,
					    fftw_real *out, int ostride);

extern rfftw_plan rfftw_create_plan(int n, fftw_direction dir, int flags);
extern void rfftw_destroy_plan(rfftw_plan plan);

extern void rfftw_fprint_plan(FILE *f, rfftw_plan p);
extern void rfftw_print_plan(rfftw_plan p);

extern void rfftw_executor_simple(int n, fftw_real *in,
				  fftw_real *out,
				  fftw_plan_node *p,
				  int istride,
				  int ostride,
				  fftw_recurse_kind recurse_kind);

extern rfftwnd_plan rfftwnd_create_plan_specific(int rank, const int *n,
						fftw_direction dir, int flags,
						fftw_real *in, int istride,
						fftw_real *out, int ostride);
extern rfftwnd_plan rfftw2d_create_plan_specific(int nx, int ny,
					   fftw_direction dir, int flags,
					      fftw_real *in, int istride,
					    fftw_real *out, int ostride);
extern rfftwnd_plan rfftw3d_create_plan_specific(int nx, int ny, int nz,
					   fftw_direction dir, int flags,
					      fftw_real *in, int istride,
					    fftw_real *out, int ostride);
extern rfftwnd_plan rfftwnd_create_plan(int rank, const int *n,
					  fftw_direction dir, int flags);
extern rfftwnd_plan rfftw2d_create_plan(int nx, int ny,
					  fftw_direction dir, int flags);
extern rfftwnd_plan rfftw3d_create_plan(int nx, int ny, int nz,
					  fftw_direction dir, int flags);
extern void rfftwnd_destroy_plan(rfftwnd_plan plan);
extern void rfftwnd_fprint_plan(FILE *f, rfftwnd_plan plan);
extern void rfftwnd_print_plan(rfftwnd_plan plan);
extern void rfftwnd_real_to_complex(rfftwnd_plan p, int howmany,
				   fftw_real *in, int istride, int idist,
			      fftw_complex *out, int ostride, int odist);
extern void rfftwnd_complex_to_real(rfftwnd_plan p, int howmany,
				fftw_complex *in, int istride, int idist,
				 fftw_real *out, int ostride, int odist);
extern void rfftwnd_one_real_to_complex(rfftwnd_plan p,
					fftw_real *in, fftw_complex *out);
extern void rfftwnd_one_complex_to_real(rfftwnd_plan p,
					fftw_complex *in, fftw_real *out);

/****************************************************************************/

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