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arm_cfft_radix4_instance_q31 Struct Reference
Instance structure for the Q31 CFFT/CIFFT function. More...
#include <arm_math.h>
Data Fields | |
| uint16_t | fftLen |
| length of the FFT. | |
| uint8_t | ifftFlag |
| flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. | |
| uint8_t | bitReverseFlag |
| flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. | |
| q31_t * | pTwiddle |
| points to the twiddle factor table. | |
| uint16_t * | pBitRevTable |
| points to the bit reversal table. | |
| uint16_t | twidCoefModifier |
| twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. | |
| uint16_t | bitRevFactor |
| bit reversal modifier that supports different size FFTs with the same bit reversal table. | |
Detailed Description
Instance structure for the Q31 CFFT/CIFFT function.
Definition at line 1838 of file arm_math.h.
Field Documentation
| uint8_t bitReverseFlag |
flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output.
Definition at line 1842 of file arm_math.h.
| uint16_t bitRevFactor |
bit reversal modifier that supports different size FFTs with the same bit reversal table.
Definition at line 1846 of file arm_math.h.
| uint16_t fftLen |
length of the FFT.
Definition at line 1840 of file arm_math.h.
| uint8_t ifftFlag |
flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform.
Definition at line 1841 of file arm_math.h.
| uint16_t* pBitRevTable |
points to the bit reversal table.
Definition at line 1844 of file arm_math.h.
| q31_t* pTwiddle |
points to the twiddle factor table.
Definition at line 1843 of file arm_math.h.
| uint16_t twidCoefModifier |
twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table.
Definition at line 1845 of file arm_math.h.
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