CMSIS DSP Software Library: arm_cfft_radix4_instance_q15 Struct Reference
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arm_cfft_radix4_instance_q15 Struct Reference
Instance structure for the Q15 CFFT/CIFFT function.
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#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
Detailed Description
Instance structure for the Q15 CFFT/CIFFT function.
Definition at line 1817 of file arm_math.h.
Field Documentation
uint16_t arm_cfft_radix4_instance_q15::fftLen
length of the FFT.
Definition at line 1819 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 1820 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 1821 of file arm_math.h.
q15_t* arm_cfft_radix4_instance_q15::pTwiddle
points to the twiddle factor table.
Definition at line 1822 of file arm_math.h.
uint16_t* arm_cfft_radix4_instance_q15::pBitRevTable
points to the bit reversal table.
Definition at line 1823 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 1824 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 1825 of file arm_math.h.
The documentation for this struct was generated from the following file:
arm_math.h
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