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void | arm_cmplx_mult_real_f16 (const float16_t *pSrcCmplx, const float16_t *pSrcReal, float16_t *pCmplxDst, uint32_t numSamples) |
| Floating-point complex-by-real multiplication. More...
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void | arm_cmplx_mult_real_f32 (const float32_t *pSrcCmplx, const float32_t *pSrcReal, float32_t *pCmplxDst, uint32_t numSamples) |
| Floating-point complex-by-real multiplication. More...
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void | arm_cmplx_mult_real_q15 (const q15_t *pSrcCmplx, const q15_t *pSrcReal, q15_t *pCmplxDst, uint32_t numSamples) |
| Q15 complex-by-real multiplication. More...
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void | arm_cmplx_mult_real_q31 (const q31_t *pSrcCmplx, const q31_t *pSrcReal, q31_t *pCmplxDst, uint32_t numSamples) |
| Q31 complex-by-real multiplication. More...
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Multiplies a complex vector by a real vector and generates a complex result. The data in the complex arrays is stored in an interleaved fashion (real, imag, real, imag, ...). The parameter numSamples
represents the number of complex samples processed. The complex arrays have a total of 2*numSamples
real values while the real array has a total of numSamples
real values.
The underlying algorithm is used:
for (n = 0; n < numSamples; n++) {
pCmplxDst[(2*n)+0] = pSrcCmplx[(2*n)+0] * pSrcReal[n];
pCmplxDst[(2*n)+1] = pSrcCmplx[(2*n)+1] * pSrcReal[n];
}
There are separate functions for floating-point, Q15, and Q31 data types.
void arm_cmplx_mult_real_f16 |
( |
const float16_t * |
pSrcCmplx, |
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const float16_t * |
pSrcReal, |
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float16_t * |
pCmplxDst, |
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uint32_t |
numSamples |
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) |
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- Parameters
-
[in] | pSrcCmplx | points to complex input vector |
[in] | pSrcReal | points to real input vector |
[out] | pCmplxDst | points to complex output vector |
[in] | numSamples | number of samples in each vector |
- Returns
- none
- Parameters
-
[in] | pSrcCmplx | points to complex input vector |
[in] | pSrcReal | points to real input vector |
[out] | pCmplxDst | points to complex output vector |
[in] | numSamples | number of samples in each vector |
- Returns
- none
void arm_cmplx_mult_real_q15 |
( |
const q15_t * |
pSrcCmplx, |
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const q15_t * |
pSrcReal, |
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q15_t * |
pCmplxDst, |
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uint32_t |
numSamples |
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) |
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- Parameters
-
[in] | pSrcCmplx | points to complex input vector |
[in] | pSrcReal | points to real input vector |
[out] | pCmplxDst | points to complex output vector |
[in] | numSamples | number of samples in each vector |
- Returns
- none
- Scaling and Overflow Behavior
- The function uses saturating arithmetic. Results outside of the allowable Q15 range [0x8000 0x7FFF] are saturated.
void arm_cmplx_mult_real_q31 |
( |
const q31_t * |
pSrcCmplx, |
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const q31_t * |
pSrcReal, |
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q31_t * |
pCmplxDst, |
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uint32_t |
numSamples |
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) |
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- Parameters
-
[in] | pSrcCmplx | points to complex input vector |
[in] | pSrcReal | points to real input vector |
[out] | pCmplxDst | points to complex output vector |
[in] | numSamples | number of samples in each vector |
- Returns
- none
- Scaling and Overflow Behavior
- The function uses saturating arithmetic. Results outside of the allowable Q31 range[0x80000000 0x7FFFFFFF] are saturated.