sdsdot¶
Computes a vector-vector dot product with double precision.
Description¶
The sdsdot
routines perform a dot product between two vectors with double precision:
\[\mathrm{result} = sb + \sum_{i=1}^n X_i Y_i\]
API¶
Syntax¶
namespace oneapi::mkl::blas::column_major {
void sdsdot(sycl::queue &queue,
std::int64_t n,
float sb,
sycl::buffer<float,1> &x,
std::int64_t incx,
sycl::buffer<float,1> &y,
std::int64_t incy,
sycl::buffer<float,1> &result)
}
namespace oneapi::mkl::blas::row_major {
void sdsdot(sycl::queue &queue,
std::int64_t n,
float sb,
sycl::buffer<float,1> &x,
std::int64_t incx,
sycl::buffer<float,1> &y,
std::int64_t incy,
sycl::buffer<float,1> &result)
}
sdsdot
supports the Host, CPU, and GPU devices.
Input Parameters¶
- exec_queue
The queue where the routine should be executed.
- n
Number of elements in vectors
x
andy
.- sb
Single precision scalar to be added to the dot product.
- x
Buffer holding input vector
x
. The buffer must be of size at least (1 + (n
- 1)*abs(incx
)). See ref:matrix-storage for more details.- incx
Stride of vector x.
- y
Buffer holding input vector
y
. The buffer must be of size at least (1 + (n
- 1)*abs(incxy
)). See ref:matrix-storage for more details.- incy
Stride of vector y.
Output Parameters¶
- result
Buffer where the result (a scalar) will be stored. If
n
< 0 the result issb
.