SubCRev

Subtracts a vector from a constant.

The function interface declaration is as follows:

Operations on floating-point numbers:
HmppResult HMPPS_SubCRev_32f(const float *src, float val, float *dst, int32_t len);

HmppResult HMPPS_SubCRev_64f(const double *src, double val, double *dst, int32_t len);

HmppResult HMPPS_SubCRev_32fc(const Hmpp32fc *src, Hmpp32fc val, Hmpp32fc *dst, int32_t len);

HmppResult HMPPS_SubCRev_64fc(const Hmpp64fc *src, Hmpp64fc val, Hmpp64fc *dst, int32_t len);
Scaling of integers:
HmppResult HMPPS_SubCRev_16s_S(const int16_t *src, int16_t val, int16_t *dst, int32_t len, int32_t scale);

HmppResult HMPPS_SubCRev_32s_S(const int32_t *src, int32_t val, int32_t *dst, int32_t len, int32_t scale);

HmppResult HMPPS_SubCRev_8u_S(const uint8_t *src, uint8_t val, uint8_t *dst, int32_t len, int32_t scale);

HmppResult HMPPS_SubCRev_16u_S(const uint16_t *src, uint16_t val, uint16_t *dst, int32_t len, int32_t scale);

HmppResult HMPPS_SubCRev_16sc_S(const Hmpp16sc *src, Hmpp16sc val, Hmpp16sc *dst, int32_t len, int32_t scale);

HmppResult HMPPS_SubCRev_32sc_S(const Hmpp32sc *src, Hmpp32sc val, Hmpp32sc *dst, int32_t len, int32_t scale);
In-place operations on floating-point numbers:
HmppResult HMPPS_SubCRev_32f_I(float val, float *srcDst, int32_t len);

HmppResult HMPPS_SubCRev_64f_I(double val, double *srcDst, int32_t len);

HmppResult HMPPS_SubCRev_32fc_I(Hmpp32fc val, Hmpp32fc *srcDst, int32_t len);

HmppResult HMPPS_SubCRev_64fc_I(Hmpp64fc val, Hmpp64fc *srcDst, int32_t len);
In-place scaling on integers:
HmppResult HMPPS_SubCRev_16s_IS(int16_t val, int16_t *srcDst, int32_t len ,int32_t scale);

HmppResult HMPPS_SubCRev_32s_IS(int32_t val, int32_t *srcDst, int32_t len ,int32_t scale);

HmppResult HMPPS_SubCRev_8u_IS(uint8_t val, uint8_t *srcDst, int32_t len, int32_t scale);

HmppResult HMPPS_SubCRev_16u_IS(uint16_t val, uint16_t *srcDst, int32_t len, int32_t scale);

HmppResult HMPPS_SubCRev_16sc_IS(Hmpp16sc val, Hmpp16sc *srcDst, int32_t len, int32_t scale);

HmppResult HMPPS_SubCRev_32sc_IS(Hmpp32sc val, Hmpp32sc *srcDst, int32_t len, int32_t scale);

Parameters

Parameter	Description	Value Range	Input/Output
src	Pointer to the subtrahend	The value cannot be NULL.	Input
val	Given constant	Not limited, depending on the type	Input
dst	Pointer to the destination vector	The value cannot be NULL.	Output
srcDst	Pointer to the source vector for in-place operations	The value cannot be NULL.	Input/Output
len	Vector length	(0, INT_MAX]	Input
scale	Scale factor	[INT_MIN, 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, dst, or srcDst is NULL.
HMPP_STS_SIZE_ERR	The value of len is less than or equal to 0.

Example

#define  BUFFER_SIZE 10

void SubCRevExample(void)
{
    float src[BUFFER_SIZE_T] = {1.46,  9.40, 10.73, 5.90, 5.74, -0.96, 8.55, -1.39, 1.71, 2.32}; 
    float valTest = 8.51;
    float dst[BUFFER_SIZE_T] = {0.00};
    (void)HMPPS_Zero_32f(dst, BUFFER_SIZE_T);

    HmppResult result =  HMPPS_SubCRev_32f(src, valTest, 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");
}

Output:

subCRev: result = 0.
dst = 7.05    -0.89    -2.22    2.61    2.77    9.47    -0.04    9.90    6.80    6.19

Parent topic: Basic and Common Calculations