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 |
|---|---|---|
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
|
|
Host, CPU, and GPU |
|
|
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.