dot

Computes the dot product of two real vectors.

Syntax

void dot(queue &exec_queue, std::int64_t n, buffer<T, 1> &x, std::int64_t incx, buffer<T, 1> &y, std::int64_t incy, buffer<T_res, 1> &result)

dot supports the following precisions and devices.

T

T_res

Devices Supported

float

float

Host, CPU, and GPU

double

double

Host, CPU, and GPU

float

double

Host, CPU, and GPU

Description

The dot routines perform a dot product between two vectors:

image0

Note

For the mixed precision version (inputs are float while result is double), the dot product is computed with double precision.

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 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(incy)). 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.