arm_cfft_radix4_instance_q15 Struct Reference

Instance structure for the Q15 CFFT/CIFFT function. More...

#include <arm_math.h>

Data Fields
uint16_t	fftLen
uint8_t	ifftFlag
uint8_t	bitReverseFlag
q15_t *	pTwiddle
uint16_t *	pBitRevTable
uint16_t	twidCoefModifier
uint16_t	bitRevFactor

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Detailed Description

Instance structure for the Q15 CFFT/CIFFT function.

Definition at line 1554 of file arm_math.h.

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Field Documentation

uint16_t arm_cfft_radix4_instance_q15::fftLen

length of the FFT.

Definition at line 1556 of file arm_math.h.

uint8_t arm_cfft_radix4_instance_q15::ifftFlag

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

Definition at line 1557 of file arm_math.h.

uint8_t arm_cfft_radix4_instance_q15::bitReverseFlag

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

Definition at line 1558 of file arm_math.h.

q15_t* arm_cfft_radix4_instance_q15::pTwiddle

points to the twiddle factor table.

Definition at line 1559 of file arm_math.h.

uint16_t* arm_cfft_radix4_instance_q15::pBitRevTable

points to the bit reversal table.

Definition at line 1560 of file arm_math.h.

uint16_t arm_cfft_radix4_instance_q15::twidCoefModifier

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

Definition at line 1561 of file arm_math.h.

uint16_t arm_cfft_radix4_instance_q15::bitRevFactor

bit reversal modifier that supports different size FFTs with the same bit reversal table.

Definition at line 1562 of file arm_math.h.

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

• arm_math.h