CMSIS-DSP
Version 1.10.0
CMSIS DSP Software Library
|
Functions | |
void | arm_radix8_butterfly_f32 (float32_t *pSrc, uint16_t fftLen, const float32_t *pCoef, uint16_t twidCoefModifier) |
void | arm_bitreversal_32 (uint32_t *pSrc, const uint16_t bitRevLen, const uint16_t *pBitRevTable) |
In-place 32 bit reversal function. More... | |
void | arm_cfft_radix8by2_f32 (arm_cfft_instance_f32 *S, float32_t *p1) |
void | arm_cfft_radix8by4_f32 (arm_cfft_instance_f32 *S, float32_t *p1) |
void | arm_cfft_f32 (const arm_cfft_instance_f32 *S, float32_t *p1, uint8_t ifftFlag, uint8_t bitReverseFlag) |
Processing function for the floating-point complex FFT. More... | |
void arm_bitreversal_32 | ( | uint32_t * | pSrc, |
const uint16_t | bitRevLen, | ||
const uint16_t * | pBitRevTab | ||
) |
[in,out] | pSrc | points to in-place buffer of unknown 32-bit data type |
[in] | bitRevLen | bit reversal table length |
[in] | pBitRevTab | points to bit reversal table |
void arm_cfft_radix8by2_f32 | ( | arm_cfft_instance_f32 * | S, |
float32_t * | p1 | ||
) |
void arm_cfft_radix8by4_f32 | ( | arm_cfft_instance_f32 * | S, |
float32_t * | p1 | ||
) |
void arm_radix8_butterfly_f32 | ( | float32_t * | pSrc, |
uint16_t | fftLen, | ||
const float32_t * | pCoef, | ||
uint16_t | twidCoefModifier | ||
) |
brief Core function for the floating-point CFFT butterfly process. param[in,out] pSrc points to the in-place buffer of floating-point data type. param[in] fftLen length of the FFT. param[in] pCoef points to the twiddle coefficient buffer. param[in] twidCoefModifier twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. return none