|  | CMSIS-DSP
    Version 1.10.0
    CMSIS DSP Software Library | 
| [in] | S | points to an instance of the floating-point Radix-2 CFFT/CIFFT structure | 
| [in,out] | pSrc | points to the complex data buffer of size 2*fftLen. Processing occurs in-place | 
| [in] | S | points to an instance of the floating-point Radix-2 CFFT/CIFFT structure | 
| [in,out] | pSrc | points to the complex data buffer of size 2*fftLen. Processing occurs in-place | 
| [in,out] | S | points to an instance of the floating-point CFFT/CIFFT structure | 
| [in] | fftLen | length of the FFT | 
| [in] | ifftFlag | flag that selects transform direction 
 | 
| [in] | bitReverseFlag | flag that enables / disables bit reversal of output 
 | 
fftLen is not a supported length | [in,out] | S | points to an instance of the floating-point CFFT/CIFFT structure | 
| [in] | fftLen | length of the FFT | 
| [in] | ifftFlag | flag that selects transform direction 
 | 
| [in] | bitReverseFlag | flag that enables / disables bit reversal of output 
 | 
fftLen is not a supported length | [in,out] | S | points to an instance of the Q15 CFFT/CIFFT structure. | 
| [in] | fftLen | length of the FFT. | 
| [in] | ifftFlag | flag that selects transform direction 
 | 
| [in] | bitReverseFlag | flag that enables / disables bit reversal of output 
 | 
fftLen is not a supported length | [in,out] | S | points to an instance of the Q31 CFFT/CIFFT structure | 
| [in] | fftLen | length of the FFT | 
| [in] | ifftFlag | flag that selects transform direction 
 | 
| [in] | bitReverseFlag | flag that enables / disables bit reversal of output 
 | 
fftLen is not a supported length | [in] | S | points to an instance of the fixed-point CFFT/CIFFT structure | 
| [in,out] | pSrc | points to the complex data buffer of size 2*fftLen. Processing occurs in-place | 
| [in] | S | points to an instance of the fixed-point CFFT/CIFFT structure | 
| [in,out] | pSrc | points to the complex data buffer of size 2*fftLen. Processing occurs in-place | 
| [in] | S | points to an instance of the floating-point Radix-4 CFFT/CIFFT structure | 
| [in,out] | pSrc | points to the complex data buffer of size 2*fftLen. Processing occurs in-place | 
| [in] | S | points to an instance of the floating-point Radix-4 CFFT/CIFFT structure | 
| [in,out] | pSrc | points to the complex data buffer of size 2*fftLen. Processing occurs in-place | 
| [in,out] | S | points to an instance of the floating-point CFFT/CIFFT structure | 
| [in] | fftLen | length of the FFT | 
| [in] | ifftFlag | flag that selects transform direction 
 | 
| [in] | bitReverseFlag | flag that enables / disables bit reversal of output 
 | 
fftLen is not a supported length | [in,out] | S | points to an instance of the floating-point CFFT/CIFFT structure | 
| [in] | fftLen | length of the FFT | 
| [in] | ifftFlag | flag that selects transform direction 
 | 
| [in] | bitReverseFlag | flag that enables / disables bit reversal of output 
 | 
fftLen is not a supported length | [in,out] | S | points to an instance of the Q15 CFFT/CIFFT structure | 
| [in] | fftLen | length of the FFT | 
| [in] | ifftFlag | flag that selects transform direction 
 | 
| [in] | bitReverseFlag | flag that enables / disables bit reversal of output 
 | 
fftLen is not a supported length | [in,out] | S | points to an instance of the Q31 CFFT/CIFFT structure. | 
| [in] | fftLen | length of the FFT. | 
| [in] | ifftFlag | flag that selects transform direction 
 | 
| [in] | bitReverseFlag | flag that enables / disables bit reversal of output 
 | 
fftLen is not a supported length | [in] | S | points to an instance of the Q15 CFFT/CIFFT structure. | 
| [in,out] | pSrc | points to the complex data buffer. Processing occurs in-place. | 
| [in] | S | points to an instance of the Q31 CFFT/CIFFT structure | 
| [in,out] | pSrc | points to the complex data buffer of size 2*fftLen. Processing occurs in-place | 
| [in] | S | points to an instance of the floating-point RFFT/RIFFT structure | 
| [in] | pSrc | points to the input buffer | 
| [out] | pDst | points to the output buffer | 
| [in,out] | S | points to an instance of the floating-point RFFT/RIFFT structure | 
| [in,out] | S_CFFT | points to an instance of the floating-point CFFT/CIFFT structure | 
| [in] | fftLenReal | length of the FFT. | 
| [in] | ifftFlagR | flag that selects transform direction 
 | 
| [in] | bitReverseFlag | flag that enables / disables bit reversal of output 
 | 
fftLenReal is not a supported length