rot

Performs rotation of points in the plane.

Syntax

void rot(queue &exec_queue, std::int64_t n, buffer<T, 1> &x, std::int64_t incx, buffer<T, 1> &y, std::int64_t incy, T_scalar c, T_scalar s)

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

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.

c

Scaling factor.

s

Scaling factor.

Output Parameters

x

Buffer holding updated buffer x.

y

Buffer holding updated buffer y.