v?mulbyconj

Compute the product of input vector 1 multiplied by the conjugate of input vector 2.

Interface Definition

C interface:

void vcmulbyconj(const int len, const float complex* src1, const float complex* src2, float complex* dst);

void vzmulbyconj(const int len, const double complex* src1, const double complex* src2, double complex* dst);

Parameters

Parameter	Type	Description	Input/Output
len	Integer	Number of elements in the input vector. If len ≤ 0, the system displays a message indicating that the value of len is invalid.	Input
src1	Single-precision floating-point complex type for vcmulbyconj Double-precision floating-point complex type for vzmulbyconj	Input vector src1 with length len. If the pointer is null, the system prompts a null pointer error.	Input
src2	Single-precision floating-point complex type for vcmulbyconj Double-precision floating-point complex type for vzmulbyconj	Input vector src2 with length len. If the pointer is null, the system prompts a null pointer error.	Input
dst	Single-precision floating-point complex type for vcmulbyconj Double-precision floating-point complex type for vzmulbyconj	Output vector dst with length len. If the pointer is null, the system prompts a null pointer error.	Output

Return Value

The result of src1 multiplied by the conjugate of src2 is returned.
For details about special values, see vcmul&vzmul.xlsx and vzmulbyconj.xlsx.

Dependency

C: "kvml.h"

Example

C interface:

    #define N 4
    const complex float src1[N] = {
        __builtin_complex(-8.0f, 25.0f),
        __builtin_complex(-2.1f, +INFINITY),
        __builtin_complex(2.6f, 25.0f),
        __builtin_complex(+0.1f, NAN)
    };
    const complex float src2[N] = {
        __builtin_complex(-3.0f, 5.2f),
        __builtin_complex(NAN, -0.0f),
        __builtin_complex(-9.5f, 6.0f),
        __builtin_complex(-1.1f, 1.1f)
    };
    float complex dst[N] = {0};

    vcmulbyconj(N, src1, src2, dst);
    printFCArr("input1:", N, src1);
    printFCArr("input2:", N, src2);
    printFCArr("output:", N, dst);
 
    /** 
     *  input1: (-8.000,25.000) (-2.100,  inf) (2.600,25.000) (0.100,  nan)
     *  input2: (-3.000,5.200) (  nan,-0.000) (-9.500,6.000) (-1.100,1.100)
     *  output: (154.000,-33.400) (  nan,  nan) (125.300,-253.100) ( -nan,  nan)
     */

Parent topic: Function Syntax