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CMSIS-DSP
Version 1.4.7
CMSIS DSP Software Library
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Instance structure for the floating-point RFFT/RIFFT function.
Data Fields | |
| uint32_t | fftLenReal |
| uint16_t | fftLenBy2 |
| uint8_t | ifftFlagR |
| uint8_t | bitReverseFlagR |
| uint32_t | twidCoefRModifier |
| float32_t * | pTwiddleAReal |
| float32_t * | pTwiddleBReal |
| arm_cfft_radix4_instance_f32 * | pCfft |
| uint8_t arm_rfft_instance_f32::bitReverseFlagR |
flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output.
Referenced by arm_rfft_f32(), and arm_rfft_init_f32().
| uint16_t arm_rfft_instance_f32::fftLenBy2 |
length of the complex FFT.
Referenced by arm_rfft_f32(), and arm_rfft_init_f32().
| uint32_t arm_rfft_instance_f32::fftLenReal |
length of the real FFT.
Referenced by arm_rfft_init_f32().
| uint8_t arm_rfft_instance_f32::ifftFlagR |
flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform.
Referenced by arm_rfft_f32(), and arm_rfft_init_f32().
| arm_cfft_radix4_instance_f32* arm_rfft_instance_f32::pCfft |
points to the complex FFT instance.
Referenced by arm_rfft_f32(), and arm_rfft_init_f32().
| float32_t* arm_rfft_instance_f32::pTwiddleAReal |
points to the real twiddle factor table.
Referenced by arm_rfft_f32(), and arm_rfft_init_f32().
| float32_t* arm_rfft_instance_f32::pTwiddleBReal |
points to the imag twiddle factor table.
Referenced by arm_rfft_f32(), and arm_rfft_init_f32().
| uint32_t arm_rfft_instance_f32::twidCoefRModifier |
twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table.
Referenced by arm_rfft_f32(), and arm_rfft_init_f32().