Eigen::internal::fftw_impl< Scalar_ > Struct Template Reference

#include <ei_fftw_impl.h>

Public Types
typedef Scalar_	Scalar
typedef std::complex< Scalar >	Complex

Public Member Functions
void	clear ()
void	fwd (Complex *dst, const Complex *src, int nfft)
void	fwd (Complex *dst, const Scalar *src, int nfft)
void	fwd2 (Complex *dst, const Complex *src, int n0, int n1)
void	inv (Complex *dst, const Complex *src, int nfft)
void	inv (Scalar *dst, const Complex *src, int nfft)
void	inv2 (Complex *dst, const Complex *src, int n0, int n1)

Protected Types
typedef fftw_plan< Scalar >	PlanData
typedef Eigen::numext::int64_t	int64_t
typedef std::map< int64_t, PlanData >	PlanMap

Protected Member Functions
PlanData &	get_plan (int nfft, bool inverse, void *dst, const void *src)
PlanData &	get_plan (int n0, int n1, bool inverse, void *dst, const void *src)

Protected Attributes
PlanMap	m_plans

Member Typedef Documentation

Complex

template<typename Scalar_ >

typedef std::complex<Scalar> Eigen::internal::fftw_impl< Scalar_ >::Complex

int64_t

template<typename Scalar_ >

typedef Eigen::numext::int64_t Eigen::internal::fftw_impl< Scalar_ >::int64_t

protected

PlanData

template<typename Scalar_ >

typedef fftw_plan<Scalar> Eigen::internal::fftw_impl< Scalar_ >::PlanData

protected

PlanMap

template<typename Scalar_ >

typedef std::map<int64_t, PlanData> Eigen::internal::fftw_impl< Scalar_ >::PlanMap

protected

Scalar

template<typename Scalar_ >

typedef Scalar_ Eigen::internal::fftw_impl< Scalar_ >::Scalar

Member Function Documentation

clear()

template<typename Scalar_ >

void Eigen::internal::fftw_impl< Scalar_ >::clear ( )

inline

{ m_plans.clear(); }

References Eigen::internal::fftw_impl< Scalar_ >::m_plans.

fwd() [1/2]

template<typename Scalar_ >

void Eigen::internal::fftw_impl< Scalar_ >::fwd ( Complex *  dst, const Complex *  src, int  nfft  )

inline

                                                              {
    get_plan(nfft, false, dst, src).fwd(fftw_cast(dst), fftw_cast(src), nfft);
  }

References Eigen::internal::fftw_cast(), and Eigen::internal::fftw_impl< Scalar_ >::get_plan().

fwd() [2/2]

template<typename Scalar_ >

void Eigen::internal::fftw_impl< Scalar_ >::fwd ( Complex *  dst, const Scalar *  src, int  nfft  )

inline

                                                             {
    get_plan(nfft, false, dst, src).fwd(fftw_cast(dst), fftw_cast(src), nfft);
  }

References Eigen::internal::fftw_cast(), and Eigen::internal::fftw_impl< Scalar_ >::get_plan().

fwd2()

template<typename Scalar_ >

void Eigen::internal::fftw_impl< Scalar_ >::fwd2 ( Complex *  dst, const Complex *  src, int  n0, int  n1  )

inline

                                                                     {
    get_plan(n0, n1, false, dst, src).fwd2(fftw_cast(dst), fftw_cast(src), n0, n1);
  }

References Eigen::internal::fftw_cast(), and Eigen::internal::fftw_impl< Scalar_ >::get_plan().

get_plan() [1/2]

template<typename Scalar_ >

PlanData& Eigen::internal::fftw_impl< Scalar_ >::get_plan ( int  n0, int  n1, bool  inverse, void *  dst, const void *  src  )

inlineprotected

                                                                                      {
    bool inplace = (dst == src);
    bool aligned = ((reinterpret_cast<size_t>(src) & 15) | (reinterpret_cast<size_t>(dst) & 15)) == 0;
    int64_t key = (((((int64_t)n0) << 30) | (n1 << 3) | (inverse << 2) | (inplace << 1) | aligned) << 1) + 1;
    return m_plans[key];
  }

References inplace(), inverse(), and Eigen::internal::fftw_impl< Scalar_ >::m_plans.

get_plan() [2/2]

template<typename Scalar_ >

PlanData& Eigen::internal::fftw_impl< Scalar_ >::get_plan ( int  nfft, bool  inverse, void *  dst, const void *  src  )

inlineprotected

                                                                                {
    bool inplace = (dst == src);
    bool aligned = ((reinterpret_cast<size_t>(src) & 15) | (reinterpret_cast<size_t>(dst) & 15)) == 0;
    int64_t key = ((nfft << 3) | (inverse << 2) | (inplace << 1) | aligned) << 1;
    return m_plans[key];
  }

References inplace(), inverse(), and Eigen::internal::fftw_impl< Scalar_ >::m_plans.

Referenced by Eigen::internal::fftw_impl< Scalar_ >::fwd(), Eigen::internal::fftw_impl< Scalar_ >::fwd2(), Eigen::internal::fftw_impl< Scalar_ >::inv(), and Eigen::internal::fftw_impl< Scalar_ >::inv2().

inv() [1/2]

template<typename Scalar_ >

void Eigen::internal::fftw_impl< Scalar_ >::inv ( Complex *  dst, const Complex *  src, int  nfft  )

inline

                                                              {
    get_plan(nfft, true, dst, src).inv(fftw_cast(dst), fftw_cast(src), nfft);
  }

References Eigen::internal::fftw_cast(), and Eigen::internal::fftw_impl< Scalar_ >::get_plan().

inv() [2/2]

template<typename Scalar_ >

void Eigen::internal::fftw_impl< Scalar_ >::inv ( Scalar *  dst, const Complex *  src, int  nfft  )

inline

                                                             {
    get_plan(nfft, true, dst, src).inv(fftw_cast(dst), fftw_cast(src), nfft);
  }

References Eigen::internal::fftw_cast(), and Eigen::internal::fftw_impl< Scalar_ >::get_plan().

inv2()

template<typename Scalar_ >

void Eigen::internal::fftw_impl< Scalar_ >::inv2 ( Complex *  dst, const Complex *  src, int  n0, int  n1  )

inline

                                                                     {
    get_plan(n0, n1, true, dst, src).inv2(fftw_cast(dst), fftw_cast(src), n0, n1);
  }

References Eigen::internal::fftw_cast(), and Eigen::internal::fftw_impl< Scalar_ >::get_plan().

Member Data Documentation

m_plans

template<typename Scalar_ >

PlanMap Eigen::internal::fftw_impl< Scalar_ >::m_plans

protected

Referenced by Eigen::internal::fftw_impl< Scalar_ >::clear(), and Eigen::internal::fftw_impl< Scalar_ >::get_plan().

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The documentation for this struct was generated from the following file:

• ei_fftw_impl.h