CMSIS DSP library
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arm_cfft_radix2_instance_q15 Struct Reference
Instance structure for the Q15 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. | |
q15_t * | pTwiddle |
points to the Sin 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 Q15 CFFT/CIFFT function.
Definition at line 1949 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 1953 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 1957 of file arm_math.h.
uint16_t fftLen |
length of the FFT.
Definition at line 1951 of file arm_math.h.
uint8_t ifftFlag |
flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform.
Definition at line 1952 of file arm_math.h.
uint16_t* pBitRevTable |
points to the bit reversal table.
Definition at line 1955 of file arm_math.h.
q15_t* pTwiddle |
points to the Sin twiddle factor table.
Definition at line 1954 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 1956 of file arm_math.h.
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