rot#
Performs rotation of points in the plane.
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. The operation is defined as:
If s
is a complex type, the operation is defined as:
rot
supports the following precisions:
T |
Tc |
Ts |
---|---|---|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
rot (Buffer Version)#
Syntax#
namespace oneapi::mkl::blas::column_major {
void rot(sycl::queue &queue,
std::int64_t n,
sycl::buffer<T,1> &x,
std::int64_t incx,
sycl::buffer<T,1> &y,
std::int64_t incy,
Tc c,
Ts s)
}
namespace oneapi::mkl::blas::row_major {
void rot(sycl::queue &queue,
std::int64_t n,
sycl::buffer<T,1> &x,
std::int64_t incx,
sycl::buffer<T,1> &y,
std::int64_t incy,
Tc c,
Ts s)
}
Input Parameters#
- queue
The queue where the routine should be executed.
- n
Number of elements in vector
x
.- x
Buffer holding input vector
x
. Size of the buffer must be at least (1 + (n
- 1)*abs(incx
)). See Matrix Storage for more details.- incx
Stride of vector
x
.- y
Buffer holding input vector
y
. Size of the buffer must be at least (1 + (n
- 1)*abs(incy
)). See Matrix 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
.
rot (USM Version)#
Syntax#
namespace oneapi::mkl::blas::column_major {
sycl::event rot(sycl::queue &queue,
std::int64_t n,
T *x,
std::int64_t incx,
T *y,
std::int64_t incy,
oneapi::mkl::value_or_pointer<Tc> c,
oneapi::mkl::value_or_pointer<Ts> s,
const std::vector<sycl::event> &dependencies = {})
}
namespace oneapi::mkl::blas::row_major {
sycl::event rot(sycl::queue &queue,
std::int64_t n,
T *x,
std::int64_t incx,
T *y,
std::int64_t incy,
oneapi::mkl::value_or_pointer<Tc> c,
oneapi::mkl::value_or_pointer<Ts> s,
const std::vector<sycl::event> &dependencies = {})
}
Input Parameters#
- queue
The queue where the routine should be executed.
- n
Number of elements in vector
x
.- x
Pointer to input vector
x
. Size of the array holding input vectorx
must be at least (1 + (n
- 1)*abs(incx
)). See Matrix Storage for more details.- incx
Stride of vector
x
.- y
Pointer to input vector
y
. Size of the array holding input vectory
must be at least (1 + (n
- 1)*abs(incy
)). See Matrix Storage for more details.- incy
Stride of vector
y
.- c
Scaling factor. See Scalar Arguments for more information on the
value_or_pointer
data type.- s
Scaling factor. See Scalar Arguments for more information on the
value_or_pointer
data type.- dependencies
List of events to wait for before starting computation, if any. If omitted, defaults to no dependencies.
Output Parameters#
- x
Pointer to updated vector
x
.- y
Pointer to updated vector
y
.
Return Values#
Output event to wait on to ensure computation is complete.