dot¶
Computes the dot
product of two real vectors.
Description¶
The dot
routines perform a dot
product between two vectors:
Note
For the mixed precision version (inputs are float while result is double), the dot
product is computed with double precision.
API¶
Syntax¶
namespace oneapi::mkl::blas::column_major {
void dot(sycl::queue &queue,
std::int64_t n,
sycl::buffer<T,1> &x,
std::int64_t incx,
sycl::buffer<T,1> &y,
std::int64_t incy,
sycl::buffer<T_res,1> &result)
}
namespace oneapi::mkl::blas::row_major {
void dot(sycl::queue &queue,
std::int64_t n,
sycl::buffer<T,1> &x,
std::int64_t incx,
sycl::buffer<T,1> &y,
std::int64_t incy,
sycl::buffer<T_res,1> &result)
}
dot
supports the following precisions and devices.
T |
T_res |
Devices Supported |
---|---|---|
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
Input Parameters¶
- exec_queue
The queue where the routine should be executed.
- n
Number of elements in vectors x and y.
- x
Buffer holding input vector x. The buffer must be of size at least
(1 + (n – 1)*abs(incx))
. See 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(incy))
. See Matrix Storage for more details.- incy
Stride of vector y.
Output Parameters¶
- result
Buffer where the result (a scalar) will be stored.