swap#
Swaps a vector with another vector.
Description#
Given two vectors of n elements, x and y, the swap
routines return vectors y and x swapped, each replacing the
other. The operation is defined as:
swap supports the following precisions:
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swap (Buffer Version)#
Syntax#
namespace oneapi::mkl::blas::column_major {
void swap(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)
}
namespace oneapi::mkl::blas::row_major {
void swap(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)
}
Input Parameters#
- queue
The queue where the routine should be executed.
- n
Number of elements in vectors
xandy.- 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.
Output Parameters#
- x
Buffer holding updated buffer
x, that is, the input vectory.- y
Buffer holding updated buffer
y, that is, the input vectorx.
swap (USM Version)#
Syntax#
namespace oneapi::mkl::blas::column_major {
sycl::event swap(sycl::queue &queue,
std::int64_t n,
T *x,
std::int64_t incx,
T *y,
std::int64_t incy,
const std::vector<sycl::event> &dependencies = {})
}
namespace oneapi::mkl::blas::row_major {
sycl::event swap(sycl::queue &queue,
std::int64_t n,
T *x,
std::int64_t incx,
T *y,
std::int64_t incy,
const std::vector<sycl::event> &dependencies = {})
}
Input Parameters#
- queue
The queue where the routine should be executed.
- n
Number of elements in vectors
xandy.- x
Pointer to input vector
x. Size of the array 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 must be at least (1 + (n- 1)*abs(incy)). See Matrix Storage for more details.- incy
Stride of vector
y.- dependencies
List of events to wait for before starting computation, if any. If omitted, defaults to no dependencies.
Output Parameters#
- x
Pointer to updated array
x, that is, the input vectory.- y
Pointer to updated array
y, that is, the input vectorx.
Return Values#
Output event to wait on to ensure computation is complete.