nrf_dsp_cfft_init_f32()

void nrf_dsp_cfft_init_f32	(	nrf_dsp_cfft_f32_t *	p_cfft,
		uint16_t	len,
		const flt32_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_f32.h>

Initialize complex FFT instance structure.

Parameters

[in,out]	p_cfft	Pointer to instance of complex FFT structure to initialize nrf_dsp_cfft_f32_t
[in]	len	Length of the FFT, should be power of 2, e.g.32,64,128,256,512,1024,etc
[in]	p_twiddle_cfft	Pointer to the Twiddle factor table, can be generated with nrf_dsp_cfft_twiddle_factors_f32
[in]	p_bitrev_table	Pointer to the Bit reverse index table
[in]	bitrev_table_len	Bit reverse index table length