arm_bitreversal.c File Reference

Functions
void	arm_bitreversal_f32 (float32_t *pSrc, uint16_t fftSize, uint16_t bitRevFactor, uint16_t *pBitRevTab)
	In-place bit reversal function.
void	arm_bitreversal_q31 (q31_t *pSrc, uint32_t fftLen, uint16_t bitRevFactor, uint16_t *pBitRevTable)
	In-place bit reversal function.
void	arm_bitreversal_q15 (q15_t *pSrc16, uint32_t fftLen, uint16_t bitRevFactor, uint16_t *pBitRevTab)
	In-place bit reversal function.

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Function Documentation

void arm_bitreversal_f32	(	float32_t *	pSrc,
		uint16_t	fftSize,
		uint16_t	bitRevFactor,
		uint16_t *	pBitRevTab
	)

Parameters:

[in,out]	*pSrc	points to the in-place buffer of floating-point data type.
[in]	fftSize	length of the FFT.
[in]	bitRevFactor	bit reversal modifier that supports different size FFTs with the same bit reversal table.
[in]	*pBitRevTab	points to the bit reversal table.

Returns:

none.

Referenced by arm_cfft_radix2_f32(), arm_cfft_radix4_f32(), and arm_rfft_f32().

void arm_bitreversal_q15	(	q15_t *	pSrc,
		uint32_t	fftLen,
		uint16_t	bitRevFactor,
		uint16_t *	pBitRevTab
	)

Parameters:

[in,out]	*pSrc	points to the in-place buffer of Q15 data type.
[in]	fftLen	length of the FFT.
[in]	bitRevFactor	bit reversal modifier that supports different size FFTs with the same bit reversal table
[in]	*pBitRevTab	points to bit reversal table.

Returns:

none.

Referenced by arm_cfft_radix2_q15(), arm_cfft_radix4_q15(), and arm_rfft_q15().

void arm_bitreversal_q31	(	q31_t *	pSrc,
		uint32_t	fftLen,
		uint16_t	bitRevFactor,
		uint16_t *	pBitRevTab
	)

Parameters:

[in,out]	*pSrc	points to the in-place buffer of Q31 data type.
[in]	fftLen	length of the FFT.
[in]	bitRevFactor	bit reversal modifier that supports different size FFTs with the same bit reversal table
[in]	*pBitRevTab	points to bit reversal table.

Returns:

none.

Referenced by arm_cfft_radix2_q31(), arm_cfft_radix4_q31(), and arm_rfft_q31().