AddProduct
Adds the product of two vectors to the destination vector.
The calculation formula is as follows: srcDst[n] = srcDst[n] + src1[n] * src2[n], where n is within [0, len).
The function interface declaration is as follows:
- Operations on floating-point numbers:
HmppResult HMPPS_AddProduct_32f(const float *src1, const float *src2, float *srcDst, int32_t len);
HmppResult HMPPS_AddProduct_64f(const double *src1, const double *src2, double *srcDst, int32_t len);
HmppResult HMPPS_AddProduct_32fc(const Hmpp32fc *src1, const Hmpp32fc *src2, Hmpp32fc *srcDst, int32_t len);
HmppResult HMPPS_AddProduct_64fc(const Hmpp64fc *src1, const Hmpp64fc *src2, Hmpp64fc *srcDst, int32_t len);
- Operations on integers with scaling:
HmppResult HMPPS_AddProduct_16s_S(const int16_t *src1, const int16_t *src2, int16_t *srcDst, int32_t len, double scale);
HmppResult HMPPS_AddProduct_16s32s_S(const int16_t *src1, const int16_t *src2, int32_t *srcDst, int32_t len, double scale);
HmppResult HMPPS_AddProduct_32s_S(const int32_t *src1, const int32_t *src2, int32_t *srcDst, int32_t len, double scale);
Parameters
Parameter |
Description |
Value Range |
Input/Output |
|---|---|---|---|
src1 |
Pointer to the first source vector |
The value cannot be NULL. |
Input |
src2 |
Pointer to the second source vector |
The value cannot be NULL. |
Input |
srcDst |
Pointer to the destination vector |
The value cannot be NULL. |
Input/Output |
len |
Vector length |
(0, INT_MAX] |
Input |
scale |
Scale factor |
scale = 2n, where n is an integer. The value is within (0, INF). |
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 src1, src2, or srcDst is NULL. |
HMPP_STS_SIZE_ERR |
The value of len is less than or equal to 0. |
HMPP_STS_SCALE_ERR |
The value of scale is not within the range (0, INF) or is NaN. |
Example
#define BUFFER_SIZE_T 10
void AddProductExample(void)
{
Hmpp64fc src1[BUFFER_SIZE_T] = {
12130, -6322, 19151, -18246, 26700, -6189, 10090, -5686, -17433, -29849,
-1064, -12397, 9846, -18348, -27613, 9270, 12561, 24201, -8793, -3989
};
Hmpp64fc src2[BUFFER_SIZE_T] = {
-26409, -11074, -16480, -2962, 8889, 15810, -25568, -16638, 15040, 13349,
23212, -27356, 6691, 26146, -17678, 15252, -20052, 25113, -16404, 24897
};
Hmpp64fc srcDst[BUFFER_SIZE_T] = {
-26409, -11074, -16480, -2962, 8889, 15810, -25568, -16638, 15040, 13349,
23212, -27356, 6691, 26146, -17678, 15252, -20052, 25113, -16404, 24897
};
int32_t i;
HmppResult result = HMPPS_AddProduct_64fc(src1, src2, srcDst, BUFFER_SIZE_T);
printf("result = %d \n dst =", result);
if (result != HMPP_STS_NO_ERR) {
return;
}
for (i = 0; i < BUFFER_SIZE_T; i++) {
printf(" %f ", srcDst[i]);
}
}
Output:
result = 0 dst = -390377407.000000 -369669612.000000 335193279.000000 -352610356.000000 136277021.000000 -363806688.000000 545613085.000000 346738896.000000 -859652937.000000 243538101.000000