rot (USM Version)

Performs rotation of points in the plane.

Syntax

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

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

T

T_scalar

Devices Supported

float

float

Host, CPU, and GPU

double

double

Host, CPU, and GPU

std::complex<float>

float

Host, CPU, and GPU

std::complex<double>

double

Host, CPU, and GPU

Description

Given two vectors x and y of n elements, the rot routines compute four scalar-vector products and update the input vectors with the sum of two of these scalar-vector products as follow:

EQUATION HERE

Input Parameters

exec_queue

The queue where the routine should be executed.

n

Number of elements in vector x.

x

Pointer to input vector x. The array holding input vector x 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 input vector y. The array holding input vector y must be of size at least (1 + (n - 1)*abs(incy)). See Matrix and Vector Storage for more details.

incy

Stride of vector y.

c

Scaling factor.

s

Scaling factor.

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 matrix x.

y

Pointer to the updated matrix y.

Return Values

Output event to wait on to ensure computation is complete.

rot rotg