#include "NE10_types.h"
#include "NE10_macros.h"
#include "NE10_fft.h"

Macros
#define	NE10_CPX_MUL_S32(Z, A, B)

#define	NE10_S_MUL_S32(A, S) (((NE10_F2I32_SAMPPROD) (A) * (S)) >> 31)

Functions
template<int RADIX>
void	FFT_MUL_TW (ne10_fft_cpx_int32_t out[RADIX], const ne10_fft_cpx_int32_t in[RADIX], const ne10_fft_cpx_int32_t tw[RADIX])
	Multiply input with twiddles. More...

template<>
void	FFT_MUL_TW< 2 > (ne10_fft_cpx_int32_t out[2], const ne10_fft_cpx_int32_t in[2], const ne10_fft_cpx_int32_t tw[1])

template<int RADIX>
void	FFT_MUL_TW (ne10_fft_cpx_int32_t out[RADIX], const ne10_fft_cpx_int32_t in[RADIX], const ne10_fft_cpx_int32_t tw[RADIX-1])

template<int RADIX>
void	FFT_FCU (ne10_fft_cpx_int32_t scratch_out[RADIX], const ne10_fft_cpx_int32_t scratch_in[RADIX])
	Basic fixed-point butterfly used in each stage. More...

template<>
void	FFT_FCU< 2 > (ne10_fft_cpx_int32_t scratch_out[2], const ne10_fft_cpx_int32_t scratch_in[2])
	Basic fixed-point Radix-2 butterfly used in each stage. More...

template<>
void	FFT_FCU< 3 > (ne10_fft_cpx_int32_t Fout[3], const ne10_fft_cpx_int32_t Fin[3])
	Basic fixed-point radix-3 butterfly used in each stage. More...

template<>
void	FFT_FCU< 4 > (ne10_fft_cpx_int32_t scratch_out[4], const ne10_fft_cpx_int32_t scratch_in[4])
	Basic fixed-point radix-4 butterfly used in each stage. More...

template<>
void	FFT_FCU< 5 > (ne10_fft_cpx_int32_t Fout[5], const ne10_fft_cpx_int32_t Fin[5])
	Basic fixed-point radix-5 butterfly used in each stage. More...

template<class T >
void	NE10_CONJ_S (T &)
	Conjugate a fix-point complex scalar/NEON vector. More...

template<>
void	NE10_CONJ_S< ne10_fft_cpx_int32_t > (ne10_fft_cpx_int32_t &scalar)

template<int RADIX, class T >
void	NE10_CONJ (T in[RADIX])
	Conjugate a fix-point complex array. More...

template<>
void	NE10_CONJ< 1, ne10_fft_cpx_int32_t > (ne10_fft_cpx_int32_t in[1])

template<class T >
T	NE10_CPX_LOAD_S (const T *ptr)

template<class T >
void	NE10_CPX_STORE_S (T *Fout, const T in)

template<int RADIX, class T >
void	NE10_LOAD_BY_STEP (T out[RADIX], const T *Fin, const ne10_int32_t in_step)
	Load a fixed-size array from given buffer, by given step. More...

template<>
void	NE10_LOAD_BY_STEP< 1, ne10_fft_cpx_int32_t > (ne10_fft_cpx_int32_t out[0], const ne10_fft_cpx_int32_t *Fin, const ne10_int32_t)

template<int RADIX, class T >
void	NE10_STORE_BY_STEP (T *Fout, const T in[RADIX], const ne10_int32_t out_step)
	Store a fixed-size array to given buffer, by given step. More...

template<>
void	NE10_STORE_BY_STEP< 1, ne10_fft_cpx_int32_t > (ne10_fft_cpx_int32_t *Fout, const ne10_fft_cpx_int32_t in[1], const ne10_int32_t)

template<int RADIX>
void	NE10_SCALED (ne10_fft_cpx_int32_t out[RADIX], const ne10_int32_t scaling)
	Scale a fixed-size array by given divider. More...

template<>
void	NE10_SCALED< 1 > (ne10_fft_cpx_int32_t out[1], const ne10_int32_t scaling)

Macro Definition Documentation

#define NE10_CPX_MUL_S32	(	Z,
		A,
		B
	)

Value:

do { \
        ne10_int32_t ARBR = ((NE10_F2I32_SAMPPROD) A.r * B.r) >> 31; \
        ne10_int32_t ARBI = ((NE10_F2I32_SAMPPROD) A.r * B.i) >> 31; \
        ne10_int32_t AIBR = ((NE10_F2I32_SAMPPROD) A.i * B.r) >> 31; \
        ne10_int32_t AIBI = ((NE10_F2I32_SAMPPROD) A.i * B.i) >> 31; \
        Z.r = ARBR - AIBI; \
        Z.i = ARBI + AIBR; \
    } while (0)

Definition at line 54 of file NE10_fft_generic_int32.h.

#define NE10_S_MUL_S32	(	A,
		S
	)	(((NE10_F2I32_SAMPPROD) (A) * (S)) >> 31)

Definition at line 64 of file NE10_fft_generic_int32.h.

Function Documentation

template<int RADIX>

void FFT_FCU	(	ne10_fft_cpx_int32_t	scratch_out[RADIX],
		const ne10_fft_cpx_int32_t	scratch_in[RADIX]
	)

inline

Basic fixed-point butterfly used in each stage.

Template Parameters

RADIX Radix of butterfly.

Parameters

[out]	scratch_out	Output array.
[in]	scratch_in	Input array.

template<>

void FFT_FCU< 2 >	(	ne10_fft_cpx_int32_t	scratch_out[2],
		const ne10_fft_cpx_int32_t	scratch_in[2]
	)

inline

Basic fixed-point Radix-2 butterfly used in each stage.

Parameters

[out]	scratch_out	Output array.
[in]	scratch_in	Input array.

Definition at line 118 of file NE10_fft_generic_int32.h.

template<>

void FFT_FCU< 3 >	(	ne10_fft_cpx_int32_t	Fout[3],
		const ne10_fft_cpx_int32_t	Fin[3]
	)

inline

Basic fixed-point radix-3 butterfly used in each stage.

Parameters

[out]	scratch_out	Output array.
[in]	scratch_in	Input array.

Definition at line 131 of file NE10_fft_generic_int32.h.

template<>

void FFT_FCU< 4 >	(	ne10_fft_cpx_int32_t	scratch_out[4],
		const ne10_fft_cpx_int32_t	scratch_in[4]
	)

inline

Basic fixed-point radix-4 butterfly used in each stage.

Parameters

[out]	scratch_out	Output array.
[in]	scratch_in	Input array.

Definition at line 173 of file NE10_fft_generic_int32.h.

template<>

void FFT_FCU< 5 >	(	ne10_fft_cpx_int32_t	Fout[5],
		const ne10_fft_cpx_int32_t	Fin[5]
	)

inline

Basic fixed-point radix-5 butterfly used in each stage.

Parameters

[out]	scratch_out	Output array.
[in]	scratch_in	Input array.

Definition at line 198 of file NE10_fft_generic_int32.h.

template<int RADIX>

void FFT_MUL_TW	(	ne10_fft_cpx_int32_t	out[RADIX],
		const ne10_fft_cpx_int32_t	in[RADIX],
		const ne10_fft_cpx_int32_t	tw[RADIX]
	)

inline

Multiply input with twiddles.

Template Parameters

RADIX Length of given fix-point complex array

Parameters

[out]	out	Output array.
[in]	in	Input array.
[in]	tw	Twiddles array.

template<int RADIX>

void FFT_MUL_TW	(	ne10_fft_cpx_int32_t	out[RADIX],
		const ne10_fft_cpx_int32_t	in[RADIX],
		const ne10_fft_cpx_int32_t	tw[RADIX-1]
	)

inline

Definition at line 88 of file NE10_fft_generic_int32.h.

template<>

void FFT_MUL_TW< 2 >	(	ne10_fft_cpx_int32_t	out[2],
		const ne10_fft_cpx_int32_t	in[2],
		const ne10_fft_cpx_int32_t	tw[1]
	)

inline

Definition at line 79 of file NE10_fft_generic_int32.h.

template<int RADIX, class T >

void NE10_CONJ ( T in[RADIX] )

inline

Conjugate a fix-point complex array.

Template Parameters

RADIX Length of given fix-point complex array

Parameters

[out] in Given array

Definition at line 278 of file NE10_fft_generic_int32.h.

template<>

void NE10_CONJ< 1, ne10_fft_cpx_int32_t > ( ne10_fft_cpx_int32_t in[1] )

inline

Definition at line 285 of file NE10_fft_generic_int32.h.

template<class T >

void NE10_CONJ_S ( T & )

inline

Conjugate a fix-point complex scalar/NEON vector.

template<>

void NE10_CONJ_S< ne10_fft_cpx_int32_t > ( ne10_fft_cpx_int32_t & scalar )

inline

Definition at line 267 of file NE10_fft_generic_int32.h.

template<class T >

T NE10_CPX_LOAD_S ( const T * ptr )

inline

Definition at line 291 of file NE10_fft_generic_int32.h.

template<class T >

void NE10_CPX_STORE_S	(	T *	Fout,
		const T	in
	)

inline

Definition at line 297 of file NE10_fft_generic_int32.h.

template<int RADIX, class T >

void NE10_LOAD_BY_STEP	(	T	out[RADIX],
		const T *	Fin,
		const ne10_int32_t	in_step
	)

inline

Load a fixed-size array from given buffer, by given step.

Template Parameters

RADIX Length of array.

Parameters

[out]	out	Array to which data are loaded
[in]	Fin	Pointing to buffer from which data are loaded
[in]	in_step	Step between loaded data in Fin

Definition at line 324 of file NE10_fft_generic_int32.h.

template<>

void NE10_LOAD_BY_STEP< 1, ne10_fft_cpx_int32_t >	(	ne10_fft_cpx_int32_t	out[0],
		const ne10_fft_cpx_int32_t *	Fin,
		const ne10_int32_t
	)

inline

Definition at line 315 of file NE10_fft_generic_int32.h.

template<int RADIX>

void NE10_SCALED	(	ne10_fft_cpx_int32_t	out[RADIX],
		const ne10_int32_t	scaling
	)

inline

Scale a fixed-size array by given divider.

Template Parameters

RADIX Length of array.

Parameters

[out]	out	Array whose elements are scaled
[in]	scaling	Divider by which array is divided

Definition at line 364 of file NE10_fft_generic_int32.h.

template<>

void NE10_SCALED< 1 >	(	ne10_fft_cpx_int32_t	out[1],
		const ne10_int32_t	scaling
	)

inline

Definition at line 372 of file NE10_fft_generic_int32.h.

template<int RADIX, class T >

void NE10_STORE_BY_STEP	(	T *	Fout,
		const T	in[RADIX],
		const ne10_int32_t	out_step
	)

inline

Store a fixed-size array to given buffer, by given step.

Template Parameters

RADIX Length of array.

Parameters

[out]	Fout	Pointing to buffer to which data are stored
[in]	out	Array to from data are stored
[in]	out_step	Step between stored data in Fout

Definition at line 340 of file NE10_fft_generic_int32.h.

template<>

void NE10_STORE_BY_STEP< 1, ne10_fft_cpx_int32_t >	(	ne10_fft_cpx_int32_t *	Fout,
		const ne10_fft_cpx_int32_t	in[1],
		const ne10_int32_t
	)

inline

Definition at line 349 of file NE10_fft_generic_int32.h.

Macros

Functions

Macro Definition Documentation

Function Documentation