SubCRev
常量与向量相减。
函数接口声明如下：
- 浮点数的操作：
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);
- 整型数的缩放操作：
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);
- 浮点数的原址操作：
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);
- 整型数的原址缩放操作：
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);
参数
参数名 |
描述 |
取值范围 |
输入/输出 |
|---|---|---|---|
src |
指向减数的指针。 |
非空 |
输入 |
val |
给定常数。 |
不限，视类型而定 |
输入 |
dst |
指向目标向量的指针。 |
非空 |
输出 |
srcDst |
指向原址操作向量的指针。 |
非空 |
输入/输出 |
len |
向量长度。 |
(0,INT_MAX] |
输入 |
scale |
缩放因数。 |
[INT_MIN, INT_MAX] |
输入 |
返回值
- 成功：返回HMPP_STS_NO_ERR。
- 失败：返回错误码。
错误码
错误码 |
描述 |
|---|---|
HMPP_STS_NULL_PTR_ERR |
src、dst、srcDst这几个入参中存在空指针。 |
HMPP_STS_SIZE_ERR |
len小于或等于0。 |
示例
#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");
}
运行结果：
subCRev: result = 0. dst = 7.05 -0.89 -2.22 2.61 2.77 9.47 -0.04 9.90 6.80 6.19