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Real

Obtains the real part of the complex number.

The function interface declaration is as follows:

  • Operations on integers:

    HmppResult HMPPS_Real_16sc(const Hmpp16sc* src, int16_t* dstRe, int32_t len);

  • Operations on floating-point numbers:

    HmppResult HMPPS_Real_32fc(const Hmpp32fc* src, float* dstRe, int32_t len);

    HmppResult HMPPS_Real_64fc(const Hmpp64fc* src, double* dstRe, int32_t len);

Parameters

Parameter

Description

Value Range

Input/Output

src

Pointer to the source vector

The value cannot be NULL.

Input

dstRe

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 dstRe is NULL.

HMPP_STS_SIZE_ERR

The value of len is less than or equal to 0.

Example

#define BUFFER_SIZE_T 5
void RealExample(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_Real_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 = 1   9    3    41     0