CMSIS-DSP
Version 1.10.0
CMSIS DSP Software Library
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Functions | |
void | arm_radix4_butterfly_inverse_q31 (q31_t *pSrc, uint32_t fftLen, const q31_t *pCoef, uint32_t twidCoefModifier) |
Core function for the Q31 CIFFT butterfly process. More... | |
void | arm_radix4_butterfly_q31 (q31_t *pSrc, uint32_t fftLen, const q31_t *pCoef, uint32_t twidCoefModifier) |
Core function for the Q31 CFFT butterfly process. More... | |
void | arm_bitreversal_q31 (q31_t *pSrc, uint32_t fftLen, uint16_t bitRevFactor, const uint16_t *pBitRevTab) |
In-place Q31 bit reversal function. More... | |
void | arm_cfft_radix4_q31 (const arm_cfft_radix4_instance_q31 *S, q31_t *pSrc) |
Processing function for the Q31 CFFT/CIFFT. More... | |
void arm_bitreversal_q31 | ( | q31_t * | pSrc, |
uint32_t | fftLen, | ||
uint16_t | bitRevFactor, | ||
const uint16_t * | pBitRevTab | ||
) |
[in,out] | pSrc | points to in-place Q31 data buffer. |
[in] | fftLen | length of FFT. |
[in] | bitRevFactor | bit reversal modifier that supports different size FFTs with the same bit reversal table |
[in] | pBitRevTab | points to bit reversal table |
void arm_radix4_butterfly_inverse_q31 | ( | q31_t * | pSrc, |
uint32_t | fftLen, | ||
const q31_t * | pCoef, | ||
uint32_t | twidCoefModifier | ||
) |
[in,out] | pSrc | points to the in-place buffer of Q31 data type. |
[in] | fftLen | length of the FFT. |
[in] | pCoef | points to twiddle coefficient buffer. |
[in] | twidCoefModifier | twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. |
void arm_radix4_butterfly_q31 | ( | q31_t * | pSrc, |
uint32_t | fftLen, | ||
const q31_t * | pCoef, | ||
uint32_t | twidCoefModifier | ||
) |
end of ComplexFFT group
[in,out] | pSrc | points to the in-place buffer of Q31 data type. |
[in] | fftLen | length of the FFT. |
[in] | pCoef | points to twiddle coefficient buffer. |
[in] | twidCoefModifier | twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. |