sdsdot¶

Computes a vector-vector dot product with double precision.

Description

The sdsdot routines perform a dot product between two vectors with double precision:

sdsdot (Buffer Version)¶

Syntax

void onemkl::blas::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)¶

Input Parameters

queue: The queue where the routine should be executed.
n: Number of elements in vectors x and y.
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 Matrix and Vector 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 Matrix and Vector 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 is sb.

Syntax

sycl::event onemkl::blas::sdsdot(sycl::queue &queue, std::int64_t n, float sb, const float *x, std::int64_t incx, const float *y, std::int64_t incy, float *result, const sycl::vector_class<sycl::event> &dependencies = {})¶

Input Parameters

queue: The queue where the routine should be executed.
n: Number of elements in vectors x and y.
sb: Single precision scalar to be added to the dot product.
x: Pointer to the input vector x. The array must be of size at least (1 + (n - 1)*abs(incx)). See Matrix and Vector Storage for more details.
incx: Stride of vector x.
y: Pointer to the input vector y. The array must be of size at least (1 + (n - 1)*abs(incxy)). See Matrix and Vector Storage for more details.
incy: Stride of vector y.
dependencies: List of events to wait for before starting computation, if any. If omitted, defaults to no dependencies.

Output Parameters

result: Pointer to where the result (a scalar) will be stored. If n < 0 the result is sb.

Return Values

Output event to wait on to ensure computation is complete.

Parent topic: BLAS Level 1 Routines