rocsparse_axpby Interface Reference#
hipfort_rocsparse::rocsparse_axpby Interface Reference
Scale a sparse vector and add it to a scaled dense vector. More...
Public Member Functions | |
integer(kind(rocsparse_status_success)) function | rocsparse_axpby_ (handle, alpha, x, beta, y) |
Detailed Description
Scale a sparse vector and add it to a scaled dense vector.
rocsparse_axpby
multiplies the sparse vector \(x\) with scalar \(\alpha\) and adds the result to the dense vector \(y\) that is multiplied with scalar \(\beta\), such that
\[ y := \alpha \cdot x + \beta \cdot y \]
for(i = 0; i < nnz; ++i)
{
y[x_ind[i]] = alpha * x_val[i] + beta * y[x_ind[i]]
}
- Note
- This function is non blocking and executed asynchronously with respect to the host. It may return before the actual computation has finished.
- Parameters
-
[in] handle handle to the rocsparse library context queue. [in] alpha scalar \(\alpha\). [in] x sparse matrix descriptor. [in] beta scalar \(\beta\). [in,out] y dense matrix descriptor.
- Return values
-
rocsparse_status_success the operation completed successfully. rocsparse_status_invalid_handle the library context was not initialized. rocsparse_status_invalid_pointer alpha
,x
,beta
ory
pointer is invalid.
Member Function/Subroutine Documentation
◆ rocsparse_axpby_()
integer(kind(rocsparse_status_success)) function hipfort_rocsparse::rocsparse_axpby::rocsparse_axpby_ | ( | type(c_ptr), value | handle, |
type(c_ptr), value | alpha, | ||
type(c_ptr), value | x, | ||
type(c_ptr), value | beta, | ||
type(c_ptr), value | y | ||
) |
The documentation for this interface was generated from the following file: