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CMSIS-DSP
Version 1.4.7
CMSIS DSP Software Library
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Functions | |
| void | arm_radix4_butterfly_f32 (float32_t *pSrc, uint16_t fftLen, float32_t *pCoef, uint16_t twidCoefModifier) |
| void | arm_radix4_butterfly_inverse_f32 (float32_t *pSrc, uint16_t fftLen, float32_t *pCoef, uint16_t twidCoefModifier, float32_t onebyfftLen) |
| void | arm_bitreversal_f32 (float32_t *pSrc, uint16_t fftSize, uint16_t bitRevFactor, uint16_t *pBitRevTab) |
| 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_split_rifft_f32 (float32_t *pSrc, uint32_t fftLen, float32_t *pATable, float32_t *pBTable, float32_t *pDst, uint32_t modifier) |
| Core Real IFFT process. | |
| void | arm_rfft_f32 (const arm_rfft_instance_f32 *S, float32_t *pSrc, float32_t *pDst) |
| Processing function for the floating-point RFFT/RIFFT. | |
| void arm_bitreversal_f32 | ( | float32_t * | pSrc, |
| uint16_t | fftSize, | ||
| uint16_t | bitRevFactor, | ||
| uint16_t * | pBitRevTab | ||
| ) |
Referenced by arm_cfft_radix2_f32(), arm_cfft_radix4_f32(), and arm_rfft_f32().
| void arm_radix4_butterfly_inverse_f32 | ( | float32_t * | pSrc, |
| uint16_t | fftLen, | ||
| float32_t * | pCoef, | ||
| uint16_t | twidCoefModifier, | ||
| float32_t | onebyfftLen | ||
| ) |
Referenced by arm_cfft_radix4_f32(), and arm_rfft_f32().
| void arm_split_rifft_f32 | ( | float32_t * | pSrc, |
| uint32_t | fftLen, | ||
| float32_t * | pATable, | ||
| float32_t * | pBTable, | ||
| float32_t * | pDst, | ||
| uint32_t | modifier | ||
| ) |
| [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().