#include "arm_math.h"Go to the source code of this file.
Functions | |
| void | arm_cfft_radix4_q15 (const arm_cfft_radix4_instance_q15 *S, q15_t *pSrc) |
| void | arm_radix4_butterfly_q15 (q15_t *pSrc16, uint32_t fftLen, q15_t *pCoef16, uint32_t twidCoefModifier) |
| void | arm_radix4_butterfly_inverse_q15 (q15_t *pSrc16, uint32_t fftLen, q15_t *pCoef16, uint32_t twidCoefModifier) |
| void | arm_bitreversal_q15 (q15_t *pSrc16, uint32_t fftLen, uint16_t bitRevFactor, uint16_t *pBitRevTab) |
| void arm_radix4_butterfly_q15 | ( | q15_t * | pSrc16, |
| uint32_t | fftLen, | ||
| q15_t * | pCoef16, | ||
| uint32_t | twidCoefModifier | ||
| ) |
Core function for the Q15 CFFT butterfly process.
end of CFFT_CIFFT group
| [in,out] | *pSrc16 | points to the in-place buffer of Q15 data type. |
| [in] | fftLen | length of the FFT. |
| [in] | *pCoef16 | points to twiddle coefficient buffer. |
| [in] | twidCoefModifier | twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. |
Definition at line 138 of file arm_cfft_radix4_q15.c.
| void arm_radix4_butterfly_inverse_q15 | ( | q15_t * | pSrc16, |
| uint32_t | fftLen, | ||
| q15_t * | pCoef16, | ||
| uint32_t | twidCoefModifier | ||
| ) |
Core function for the Q15 CIFFT butterfly process.
| [in,out] | *pSrc16 | points to the in-place buffer of Q15 data type. |
| [in] | fftLen | length of the FFT. |
| [in] | *pCoef16 | points to twiddle coefficient buffer. |
| [in] | twidCoefModifier | twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. |
Definition at line 1053 of file arm_cfft_radix4_q15.c.
| void arm_bitreversal_q15 | ( | q15_t * | pSrc, |
| uint32_t | fftLen, | ||
| uint16_t | bitRevFactor, | ||
| uint16_t * | pBitRevTab | ||
| ) |
In-place bit reversal function.
| [in,out] | *pSrc | points to the in-place buffer of Q15 data type. |
| [in] | fftLen | length of the FFT. |
| [in] | bitRevFactor | bit reversal modifier that supports different size FFTs with the same bit reversal table |
| [in] | *pBitRevTab | points to bit reversal table. |
Definition at line 1906 of file arm_cfft_radix4_q15.c.
1.7.2