Imag

Obtains the imaginary part of a complex number.

The function interface declaration is as follows:

Operations on integers:
HmppResult HMPPS_Imag_16sc(const Hmpp16sc* src, int16_t* dstIm, int32_t len);
Operations on floating-point numbers:
HmppResult HMPPS_Imag_32fc(const Hmpp32fc* src, float* dstIm, int32_t len);

HmppResult HMPPS_Imag_64fc(const Hmpp64fc* src, double* dstIm, int32_t len);

Parameters

Parameter	Description	Value Range	Input/Output
src	Pointer to the source vector	The value cannot be NULL.	Input
dst	Pointer to the destination vector	The value cannot be NULL.	Output
len	Vector length	(0, INT_MAX]	Input

Return Value

Success: HMPP_STS_NO_ERR
Failure: An error code is returned.

Error Codes

Error Code	Description
HMPP_STS_NULL_PTR_ERR	The value of src or dstIm is NULL.
HMPP_STS_SIZE_ERR	The value of len is less than or equal to 0.

Example

#define BUFFER_SIZE_T 5
void ImagExample(void)
{
    Hmpp16sc src[BUFFER_SIZE_T] = {1, 63, 9, 71, 3, 43, 41, 255, 0, 127};
    int16_t dst[BUFFER_SIZE_T];
    int32_t i;
    HmppResult result = HMPPS_Imag_16sc(src, dst, BUFFER_SIZE_T);
    printf("result = %d \n", result);
    if (result != HMPP_STS_NO_ERR) {
        return;
    }
    printf("dst =");
    for (i = 0; i < BUFFER_SIZE_T; i++) {
        printf(" %d  ", dst[i]);
    }
    printf("\n");
}

Output:

result = 0
dst = 63     71      43      255     127

Parent topic: Basic and Common Calculations