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CMSIS-DSP
Version 1.4.7
CMSIS DSP Software Library
|
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. | |
| void arm_radix4_butterfly_f32 | ( | float32_t * | pSrc, |
| uint16_t | fftLen, | ||
| float32_t * | pCoef, | ||
| uint16_t | twidCoefModifier | ||
| ) |
Referenced by arm_cfft_radix4_f32(), and arm_rfft_f32().
| 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
| [in] | *pSrc | points to the input buffer. |
| [in] | fftLen | length of FFT. |
| [in] | *pATable | points to the twiddle Coef A buffer. |
| [in] | *pBTable | points to the twiddle Coef B buffer. |
| [out] | *pDst | points to the output buffer. |
| [in] | modifier | twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. |
Referenced by arm_rfft_f32().