arm_rfft_q15.c File Reference

Functions
void	arm_split_rfft_q15 (q15_t *pSrc, uint32_t fftLen, const q15_t *pATable, const q15_t *pBTable, q15_t *pDst, uint32_t modifier)
	Core Real FFT process. More...
void	arm_split_rifft_q15 (q15_t *pSrc, uint32_t fftLen, const q15_t *pATable, const q15_t *pBTable, q15_t *pDst, uint32_t modifier)
	Core Real IFFT process. More...
void	arm_rfft_q15 (const arm_rfft_instance_q15 *S, q15_t *pSrc, q15_t *pDst)
	Processing function for the Q15 RFFT/RIFFT. More...

Function Documentation

void arm_split_rfft_q15	(	q15_t *	pSrc,
		uint32_t	fftLen,
		const q15_t *	pATable,
		const q15_t *	pBTable,
		q15_t *	pDst,
		uint32_t	modifier
	)

end of RealFFT group

Parameters

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

Returns

none

The function implements a Real FFT

void arm_split_rifft_q15	(	q15_t *	pSrc,
		uint32_t	fftLen,
		const q15_t *	pATable,
		const q15_t *	pBTable,
		q15_t *	pDst,
		uint32_t	modifier
	)

Parameters

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

Returns

none

The function implements a Real IFFT