Transform Functions

Content
	Complex FFT Functions
	Radix-8 Complex FFT Functions
	DCT Type IV Functions
	Real FFT Functions
	Complex FFT Tables
	RealFFT

Functions
void	arm_radix4_butterfly_f32 (float32_t *pSrc, uint16_t fftLen, float32_t *pCoef, uint16_t twidCoefModifier)
void	arm_split_rfft_f32 (float32_t *pSrc, uint32_t fftLen, float32_t *pATable, float32_t *pBTable, float32_t *pDst, uint32_t modifier)
	Core Real FFT process.

Description

Function Documentation

void arm_radix4_butterfly_f32	(	float32_t *	pSrc,
		uint16_t	fftLen,
		float32_t *	pCoef,
		uint16_t	twidCoefModifier
	)

Referenced by arm_cfft_radix4_f32(), and arm_rfft_f32().

void arm_split_rfft_f32	(	float32_t *	pSrc,
		uint32_t	fftLen,
		float32_t *	pATable,
		float32_t *	pBTable,
		float32_t *	pDst,
		uint32_t	modifier
	)

end of RealFFT group

Parameters

[in]	*pSrc	points to the input buffer.
[in]	fftLen	length of FFT.
[in]	*pATable	points to the twiddle Coef A buffer.
[in]	*pBTable	points to the twiddle Coef B buffer.
[out]	*pDst	points to the output buffer.
[in]	modifier	twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table.

Returns

none.

Referenced by arm_rfft_f32().