CMSIS-DSP
Version 1.10.0
CMSIS DSP Software Library
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Instance structure for the Q15 RFFT/RIFFT function.
Data Fields | |
uint32_t | fftLenReal |
uint8_t | ifftFlagR |
uint8_t | bitReverseFlagR |
uint32_t | twidCoefRModifier |
const q15_t * | pTwiddleAReal |
const q15_t * | pTwiddleBReal |
const arm_cfft_instance_q15 * | pCfft |
uint8_t bitReverseFlagR |
flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output.
uint32_t fftLenReal |
length of the real FFT.
uint8_t ifftFlagR |
flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform.
const arm_cfft_instance_q15* pCfft |
points to the complex FFT instance.
const q15_t* pTwiddleAReal |
points to the real twiddle factor table.
const q15_t* pTwiddleBReal |
points to the imag twiddle factor table.
uint32_t twidCoefRModifier |
twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table.