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CMSIS-DSP
Verison 3.0
CMSIS DSP Software Library
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Instance structure for the Q15 RFFT/RIFFT function.
Data Fields | |
uint32_t | fftLenReal |
uint32_t | fftLenBy2 |
uint8_t | ifftFlagR |
uint8_t | bitReverseFlagR |
uint32_t | twidCoefRModifier |
q15_t * | pTwiddleAReal |
q15_t * | pTwiddleBReal |
arm_cfft_radix4_instance_q15 * | pCfft |
flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output.
uint32_t arm_rfft_instance_q15::fftLenBy2 |
length of the complex FFT.
uint32_t arm_rfft_instance_q15::fftLenReal |
length of the real FFT.
uint8_t arm_rfft_instance_q15::ifftFlagR |
flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform.
points to the complex FFT instance.
points to the real twiddle factor table.
points to the imag twiddle factor table.
twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table.