Visible to Intel only — GUID: GUID-B5DDCD61-5218-4694-9569-E7F473E9E853
Visible to Intel only — GUID: GUID-B5DDCD61-5218-4694-9569-E7F473E9E853
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 |
---|---|---|
sycl::half |
sycl::half |
sycl::half |
oneapi::mkl::bfloat16 |
oneapi::mkl::bfloat16 |
oneapi::mkl::bfloat16 |
float |
float |
float |
double |
double |
double |
std::complex<float> |
float |
std::complex<float> |
std::complex<double> |
double |
std::complex<double> |
std::complex<float> |
float |
float |
std::complex<double> |
double |
double |
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, Tc c, 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, Tc c, 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 vector x 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 vector y 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.
- 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.