nrf_dsp_rfft_init_i16()

void nrf_dsp_rfft_init_i16	(	nrf_dsp_rfft_i16_t *	p_rfft,
		uint16_t	len,
		const int16_t *	p_twiddle_rfft,
		const int16_t *	p_twiddle_cfft,
		const uint16_t *	p_bitrev_table,
		uint16_t	bitrev_table_len )

#include <include/nrf_edgeai/dsp/transform/fft/nrf_dsp_fft_i16.h>

Initialize real FFT instance structure.

Parameters

[in,out]	p_rfft	Pointer to instance of real FFT structure to initialize nrf_dsp_rfft_i16_t
[in]	len	Length of the real FFT
[in]	p_twiddle_rfft	Pointer to the Real Twiddle factor table, can be generated with nrf_dsp_rfft_twiddle_factors_i16
[in]	p_twiddle_cfft	Pointer to the Twiddle factor table, can be generated with nrf_dsp_cfft_twiddle_factors_i16
[in]	p_bitrev_table	Pointer to the Bit reverse index table
[in]	bitrev_table_len	Bit reverse index table length