Instance structure for the Q31 RFFT/RIFFT function. More...

#include <arm_math.h>

Collaboration diagram for arm_rfft_instance_q31:

Data Fields
uint8_t	bitReverseFlagR
	flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output.
uint32_t	fftLenBy2
	length of the complex FFT.
uint32_t	fftLenReal
	length of the real FFT.
uint8_t	ifftFlagR
	flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform.
arm_cfft_radix4_instance_q31 *	pCfft
	points to the complex FFT instance.
q31_t *	pTwiddleAReal
	points to the real twiddle factor table.
q31_t *	pTwiddleBReal
	points to the imag twiddle factor table.
uint32_t	twidCoefRModifier
	twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table.

Detailed Description

Instance structure for the Q31 RFFT/RIFFT function.

Definition at line 2444 of file arm_math.h.

Field Documentation

uint8_t arm_rfft_instance_q31::bitReverseFlagR

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

Definition at line 2449 of file arm_math.h.

uint32_t arm_rfft_instance_q31::fftLenBy2

length of the complex FFT.

Definition at line 2447 of file arm_math.h.

uint32_t arm_rfft_instance_q31::fftLenReal

length of the real FFT.

Definition at line 2446 of file arm_math.h.

uint8_t arm_rfft_instance_q31::ifftFlagR

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

Definition at line 2448 of file arm_math.h.

arm_cfft_radix4_instance_q31* arm_rfft_instance_q31::pCfft

points to the complex FFT instance.

Definition at line 2453 of file arm_math.h.

q31_t* arm_rfft_instance_q31::pTwiddleAReal

points to the real twiddle factor table.

Definition at line 2451 of file arm_math.h.

q31_t* arm_rfft_instance_q31::pTwiddleBReal

points to the imag twiddle factor table.

Definition at line 2452 of file arm_math.h.

uint32_t arm_rfft_instance_q31::twidCoefRModifier

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

Definition at line 2450 of file arm_math.h.

The documentation for this struct was generated from the following file: