csky_cfft_radix4_instance_f32 Struct Reference

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

Data Fields
uint16_t	fftLen
uint8_t	ifftFlag
uint8_t	bitReverseFlag
float32_t *	pTwiddle
uint16_t *	pBitRevTable
uint16_t	twidCoefModifier
uint16_t	bitRevFactor
float32_t	onebyfftLen

Description

Examples:

csky_convolution_example_f32.c.

Field Documentation

uint8_t csky_cfft_radix4_instance_f32::bitReverseFlag

flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output.

uint16_t csky_cfft_radix4_instance_f32::bitRevFactor

bit reversal modifier that supports different size FFTs with the same bit reversal table.

uint16_t csky_cfft_radix4_instance_f32::fftLen

length of the FFT.

uint8_t csky_cfft_radix4_instance_f32::ifftFlag

flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform.

float32_t csky_cfft_radix4_instance_f32::onebyfftLen

value of 1/fftLen.

uint16_t* csky_cfft_radix4_instance_f32::pBitRevTable

points to the bit reversal table.

float32_t* csky_cfft_radix4_instance_f32::pTwiddle

points to the Twiddle factor table.

uint16_t csky_cfft_radix4_instance_f32::twidCoefModifier

twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table.