Important changes to repositories hosted on mbed.com
Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.
To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.
It is also possible to export all your personal repositories from the account settings page.
Fork of
mbed-dsp
by 
mbed official
arm_rfft_instance_q31 Struct Reference
Instance structure for the Q31 RFFT/RIFFT function. More...
#include <arm_math.h>
Data Fields | |
| uint32_t | fftLenReal |
| length of the real FFT. | |
| uint32_t | fftLenBy2 |
| length of the complex FFT. | |
| uint8_t | ifftFlagR |
| flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform. | |
| uint8_t | bitReverseFlagR |
| flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output. | |
| uint32_t | twidCoefRModifier |
| twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. | |
| q31_t * | pTwiddleAReal |
| points to the real twiddle factor table. | |
| q31_t * | pTwiddleBReal |
| points to the imag twiddle factor table. | |
| arm_cfft_radix4_instance_q31 * | pCfft |
| points to the complex FFT instance. | |
Detailed Description
Instance structure for the Q31 RFFT/RIFFT function.
Definition at line 2166 of file arm_math.h.
Field Documentation
| uint8_t bitReverseFlagR |
flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output.
Definition at line 2171 of file arm_math.h.
| uint32_t fftLenBy2 |
length of the complex FFT.
Definition at line 2169 of file arm_math.h.
| uint32_t fftLenReal |
length of the real FFT.
Definition at line 2168 of file arm_math.h.
| uint8_t ifftFlagR |
flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform.
Definition at line 2170 of file arm_math.h.
points to the complex FFT instance.
Definition at line 2175 of file arm_math.h.
| q31_t* pTwiddleAReal |
points to the real twiddle factor table.
Definition at line 2173 of file arm_math.h.
| q31_t* pTwiddleBReal |
points to the imag twiddle factor table.
Definition at line 2174 of file arm_math.h.
| uint32_t twidCoefRModifier |
twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table.
Definition at line 2172 of file arm_math.h.
Generated on Tue Jul 12 2022 18:44:11 by
1.7.2