swap (USM Version)

Swaps a vector with another vector.

Syntax

event swap(queue &exec_queue, std::int64_t n, T *x, std::int64_t incx, T *y, std::int64_t incy, const vector_class<event> &dependencies = {})

The USM version of swap supports the following precisions and devices.

T

Devices Supported

float

Host, CPU, and GPU

double

Host, CPU, and GPU

std::complex<float>

Host, CPU, and GPU

std::complex<double>

Host, CPU, and GPU

Description

Given two vectors of n elements, x and y, the swap routines return vectors y and x swapped, each replacing the other.

y <- x, x <- y

Input Parameters

exec_queue

The queue where the routine should be executed.

n

Number of elements in vector x.

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(incy)). 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

x

Pointer to the updated array x, that is, the input vector y.

y

Pointer to the updated array y, that is, the input vector x.

Return Values

Output event to wait on to ensure computation is complete.