fftw3.hpp File Reference

Solver-local FFTW plans, buffers, and transform operations. More...

#include "../fft_wrapper.hpp"
#include <fftw3.h>

Include dependency graph for fftw3.hpp:

Namespaces
namespace	orb5x
	Public C++ interface of the ORB5X gyrokinetic application.

Typedefs
using	orb5x::fftw_complex_type = fftw_complex
	FFTW double-precision complex storage used by the compatibility routines.
using	orb5x::fftw_plan_type = fftw_plan
	Opaque FFTW plan handle; caller-created plans must be passed to destroy_plan().

Functions
void	orb5x::bspl2fft_2d (const Kokkos::View< Real ** > &bspl_data, Kokkos::View< Complex ** > &fft_data, int nchi, int nphi)
	Compute an unnormalized full complex FFT of one real surface.
void	orb5x::bspl2fft_3d (const Kokkos::View< Real *** > &bspl_data, Kokkos::View< Complex ** > &fft_data, int ns, int nchi, int nphi, int neq_f, const Kokkos::View< int *** > *filter=nullptr, const Kokkos::View< Real * > *fftminv=nullptr, const Kokkos::View< int ** > *mmin_f=nullptr, const Kokkos::View< int ** > *mmax_f=nullptr)
	Transform radial real-space surfaces to packed Fourier coefficients.
void	orb5x::destroy_plan (fftw_plan plan)
	Release a caller-owned FFTW plan.
void	orb5x::execute_backward (fftw_plan plan)
	Execute a backward plan on the buffers supplied when it was created.
void	orb5x::execute_forward (fftw_plan plan)
	Execute a forward plan on the buffers supplied when it was created.
void	orb5x::fft2bspl_2d (const Kokkos::View< Complex ** > &fft_data, Kokkos::View< Real ** > &bspl_data, int nchi, int nphi)
	Compute the normalized real inverse of a full two-dimensional spectrum.
void	orb5x::fft2bspl_3d (const Kokkos::View< Complex ** > &fft_data, Kokkos::View< Real *** > &bspl_data, int ns, int nchi, int nphi, int neq_f, const Kokkos::View< int ** > *mmin_f=nullptr, const Kokkos::View< int ** > *mmax_f=nullptr)
	Reconstruct real-space radial surfaces from packed Fourier modes.
void	orb5x::fftw_cleanup ()
	Compatibility cleanup hook retained for translated solver call sites.
void	orb5x::init_1d_backward (int n, fftw_plan &plan_backward, fftw_complex *in, fftw_complex *out)
	Create an unnormalized one-dimensional backward transform plan.
void	orb5x::init_1d_forward (int n, fftw_plan &plan_forward, fftw_complex *in, fftw_complex *out)
	Create an unnormalized one-dimensional forward transform plan.
void	orb5x::init_2d_backward (int nchi, int nphi, fftw_plan &plan_backward, fftw_complex *in, fftw_complex *out)
	Create an unnormalized backward FFT over (chi,phi).
void	orb5x::init_2d_forward (int nchi, int nphi, fftw_plan &plan_forward, fftw_complex *in, fftw_complex *out)
	Create an unnormalized forward FFT over (chi,phi).

Detailed Description

Solver-local FFTW plans, buffers, and transform operations.

FFTW calls are host-only; device-resident views require explicit staging.