|  | CMSIS-DSP
    Version 1.10.0
    CMSIS DSP Software Library | 
Instance structure for the Double Precision Floating-point RFFT/RIFFT function.
| Data Fields | |
| arm_cfft_instance_f64 | Sint | 
| uint16_t | fftLenRFFT | 
| const float64_t * | pTwiddleRFFT | 
| uint16_t fftLenRFFT | 
length of the real sequence
| const float64_t* pTwiddleRFFT | 
Twiddle factors real stage
Internal CFFT structure.