CMSIS-DSP  Version 1.4.4
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Transform Functions

Content

 Complex FFT Functions
 
 Radix-8 Complex FFT Functions
 
 DCT Type IV Functions
 
 Real FFT Functions
 
 Complex FFT Tables
 
 RealFFT
 

Functions

void arm_radix4_butterfly_f32 (float32_t *pSrc, uint16_t fftLen, float32_t *pCoef, uint16_t twidCoefModifier)
 
void arm_split_rfft_f32 (float32_t *pSrc, uint32_t fftLen, float32_t *pATable, float32_t *pBTable, float32_t *pDst, uint32_t modifier)
 Core Real FFT process.
 

Description

Function Documentation

void arm_radix4_butterfly_f32 ( float32_t pSrc,
uint16_t  fftLen,
float32_t pCoef,
uint16_t  twidCoefModifier 
)
void arm_split_rfft_f32 ( float32_t pSrc,
uint32_t  fftLen,
float32_t pATable,
float32_t pBTable,
float32_t pDst,
uint32_t  modifier 
)

end of RealFFT group

Parameters
[in]*pSrcpoints to the input buffer.
[in]fftLenlength of FFT.
[in]*pATablepoints to the twiddle Coef A buffer.
[in]*pBTablepoints to the twiddle Coef B buffer.
[out]*pDstpoints to the output buffer.
[in]modifiertwiddle coefficient modifier that supports different size FFTs with the same twiddle factor table.
Returns
none.

Referenced by arm_rfft_f32().