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arm_cfft_radix4_instance_f32 Struct Reference
Instance structure for the floating-point 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. | |
| float32_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. | |
| float32_t | onebyfftLen |
| value of 1/fftLen. | |
Detailed Description
Instance structure for the floating-point CFFT/CIFFT function.
Definition at line 2192 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 2196 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 2200 of file arm_math.h.
| uint16_t fftLen |
length of the FFT.
Definition at line 2194 of file arm_math.h.
| uint8_t ifftFlag |
flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform.
Definition at line 2195 of file arm_math.h.
| float32_t onebyfftLen |
value of 1/fftLen.
Definition at line 2201 of file arm_math.h.
| uint16_t* pBitRevTable |
points to the bit reversal table.
Definition at line 2198 of file arm_math.h.
| float32_t* pTwiddle |
points to the Twiddle factor table.
Definition at line 2197 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 2199 of file arm_math.h.
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