arm_cfft_instance_q31 Struct Reference

Instance structure for the fixed-point CFFT/CIFFT function. More...

Data Fields
uint16_t	fftLen
const q31_t *	pTwiddle
const uint16_t *	pBitRevTable
uint16_t	bitRevLength

Description

Instance structure for the fixed-point CFFT/CIFFT function.

Field Documentation

bitRevLength

uint16_t bitRevLength

bit reversal table length.

fftLen

uint16_t fftLen

length of the FFT.

pBitRevTable

const uint16_t* pBitRevTable

points to the bit reversal table.

pTwiddle

const q31_t* pTwiddle

points to the Twiddle factor table.