Functions |
void | arm_cmplx_conj_f32 (float32_t *pSrc, float32_t *pDst, uint32_t numSamples) |
| Floating-point complex conjugate.
|
void | arm_cmplx_conj_q15 (q15_t *pSrc, q15_t *pDst, uint32_t numSamples) |
| Q15 complex conjugate.
|
void | arm_cmplx_conj_q31 (q31_t *pSrc, q31_t *pDst, uint32_t numSamples) |
| Q31 complex conjugate.
|
Description
Conjugates the elements of a complex data vector.
The pSrc
points to the source data and pDst
points to the where the result should be written. numSamples
specifies the number of complex samples and the data in each array is stored in an interleaved fashion (real, imag, real, imag, ...). Each array has a total of 2*numSamples
values. The underlying algorithm is used:
for(n=0; n<numSamples; n++) {
pDst[(2*n)+0)] = pSrc[(2*n)+0]; // real part
pDst[(2*n)+1)] = -pSrc[(2*n)+1]; // imag part
}
There are separate functions for floating-point, Q15, and Q31 data types.
Function Documentation
void arm_cmplx_conj_f32 |
( |
float32_t * |
pSrc, |
|
|
float32_t * |
pDst, |
|
|
uint32_t |
numSamples |
|
) |
| |
- Parameters:
-
*pSrc | points to the input vector |
*pDst | points to the output vector |
numSamples | number of complex samples in each vector |
- Returns:
- none.
void arm_cmplx_conj_q15 |
( |
q15_t * |
pSrc, |
|
|
q15_t * |
pDst, |
|
|
uint32_t |
numSamples |
|
) |
| |
- Parameters:
-
*pSrc | points to the input vector |
*pDst | points to the output vector |
numSamples | number of complex samples in each vector |
- Returns:
- none.
Scaling and Overflow Behavior:
- The function uses saturating arithmetic. The Q15 value -1 (0x8000) will be saturated to the maximum allowable positive value 0x7FFF.
void arm_cmplx_conj_q31 |
( |
q31_t * |
pSrc, |
|
|
q31_t * |
pDst, |
|
|
uint32_t |
numSamples |
|
) |
| |
- Parameters:
-
*pSrc | points to the input vector |
*pDst | points to the output vector |
numSamples | number of complex samples in each vector |
- Returns:
- none.
Scaling and Overflow Behavior:
- The function uses saturating arithmetic. The Q31 value -1 (0x80000000) will be saturated to the maximum allowable positive value 0x7FFFFFFF.