Inv

Performs element-wise inversion for a vector.

The function interface is declared as follows:

HmppResult HMPPS_Inv_32f(const float *src, float *dst, 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 dst is NULL.
HMPP_STS_SIZE_ERR	The value of len is less than or equal to 0.

Example

#define BUFFER_SIZE_T 10
void InvExample(void)
{
    float src[BUFFER_SIZE_T] = {1.64, 1.63, -1.09, 0.71, -3.20, -0.43, 0.41, -4.83, 5.36, -4.40};
    float dst[BUFFER_SIZE_T];
    (void)HMPPS_Zero_32f(dst, BUFFER_SIZE_T); // Initialize all elements of dst to 0.
    HmppResult result = HMPPS_Inv_32f(src, dst, BUFFER_SIZE_T);
    printf("result = %d\n", result);
    if (result != HMPP_STS_NO_ERR) {
        return;
    }
    printf("dst =");
    for (int i = 0; i < BUFFER_SIZE_T; i++) {
        printf(" %.2f", dst[i]);
    }
    printf("\n");
}
int main() {
    InvExample();
    return 0;
}

Output:

result = 0
dst = 0.61 0.61 -0.92 1.41 -0.31 -2.33 2.44 -0.21 0.19 -0.23

Parent topic: Basic and Common Calculations