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MinMaxIndx

Obtains the maximum value, minimum value, and their indexes in a vector.

The function interface declaration is as follows:

  • Operations on integers:

    HmppResult HMPPS_MinMaxIndx_8u(const uint8_t *src, int32_t len, uint8_t *min, int32_t *minIndx, uint8_t *max,int32_t *maxIndx);

    HmppResult HMPPS_MinMaxIndx_16u(const uint16_t *src, int32_t len, uint16_t *min, int32_t *minIndx,uint16_t *max, int32_t *maxIndx);

    HmppResult HMPPS_MinMaxIndx_32u(const uint32_t *src, int32_t len, uint32_t *min, int32_t *minIndx,uint32_t *max, int32_t *maxIndx);

    HmppResult HMPPS_MinMaxIndx_16s(const int16_t *src, int32_t len, int16_t *min, int32_t *minIndx, int16_t *max,int32_t *maxIndx);

    HmppResult HMPPS_MinMaxIndx_32s(const int32_t *src, int32_t len, int32_t *min, int32_t *minIndx, int32_t *max,int32_t *maxIndx);

  • Operations on floating point numbers:

    HmppResult HMPPS_MinMaxIndx_32f(const float *src, int32_t len, float *min, int32_t *minIndx, float *max,int32_t *maxIndx);

    HmppResult HMPPS_MinMaxIndx_64f(const double *src, int32_t len, double *min, int32_t *minIndx, double *max,int32_t* maxIndx);

Parameters

Parameter

Description

Value Range

Input/Output

src

Pointer to the source vector

The value cannot be NULL.

Input

len

Vector length

(0, INT_MAX]

Input

min

Pointer to the minimum value

The value cannot be NULL.

Output

minIndx

Pointer to the index of the minimum value

The value cannot be NULL.

Output

max

Pointer to the maximum value

The value cannot be NULL.

Output

maxIndx

Pointer to the index of the maximum value

The value cannot be NULL.

Output

Return Value

  • Success: HMPP_STS_NO_ERR
  • Failure: An error code is returned.

Error Code

Error Code

Description

HMPP_STS_NULL_PTR_ERR

The value of src, min, minIndx, max, or maxIndx is NULL.

HMPP_STS_SIZE_ERR

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

Example

#define BUFFER_SIZE_T 10

void MinMaxIndxExample(void)
{
    int16_t src[BUFFER_SIZE_T] = {3, 0, 2, -8, 3, 15, 26, -31, 1, 23};
    int16_t min;
    int32_t minIndex;
    int16_t max;
    int32_t maxIndex;

    HmppResult result = HMPPS_MinMaxIndx_16s(src, BUFFER_SIZE_T, &min, &minIndex, &max, &maxIndex);
    printf("result = %d\n", result);
    if (result != HMPP_STS_NO_ERR) {
        return;
    }
    printf("min = %d, index of min is %d\n", min, minIndex);
    printf("max = %d, index of max is %d\n", max, maxIndex);
}

Output:

result = 0
min = -31, index of min is 7
max = 26, index of max is 6