mkl_?diasv
mkl_?diasv
Solves a system of linear equations for a sparse matrix in the diagonal format with one-based indexing (deprecated).
Syntax
void
mkl_sdiasv
(
const
char
*transa
,
const
MKL_INT
*m
,
const
float
*alpha
,
const
char
*matdescra
,
const
float
*val
,
const
MKL_INT
*lval
,
const
MKL_INT
*idiag
,
const
MKL_INT
*ndiag
,
const
float
*x
,
float
*y
);
void
mkl_ddiasv
(
const
char
*transa
,
const
MKL_INT
*m
,
const
double
*alpha
,
const
char
*matdescra
,
const
double
*val
,
const
MKL_INT
*lval
,
const
MKL_INT
*idiag
,
const
MKL_INT
*ndiag
,
const
double
*x
,
double
*y
);
void
mkl_cdiasv
(
const
char
*transa
,
const
MKL_INT
*m
,
const
MKL_Complex8
*alpha
,
const
char
*matdescra
,
const
MKL_Complex8
*val
,
const
MKL_INT
*lval
,
const
MKL_INT
*idiag
,
const
MKL_INT
*ndiag
,
const
MKL_Complex8
*x
,
MKL_Complex8
*y
);
void
mkl_zdiasv
(
const
char
*transa
,
const
MKL_INT
*m
,
const
MKL_Complex16
*alpha
,
const
char
*matdescra
,
const
MKL_Complex16
*val
,
const
MKL_INT
*lval
,
const
MKL_INT
*idiag
,
const
MKL_INT
*ndiag
,
const
MKL_Complex16
*x
,
MKL_Complex16
*y
);
Include Files
- mkl.h
Description
This routine is deprecated. Use mkl_sparse_?_trsvfrom the Inspector-executor Sparse BLAS interface instead.
Intel® oneAPI Math Kernel Library
The
mkl_?diasv
routine solves a system of linear equations with matrix-vector operations for a sparse matrix stored in the diagonal format: y := alpha*inv(A)*x
or
y := alpha*inv(AT)* x,
where:
alpha
is scalar, x
and y
are vectors, A
is a sparse upper or lower triangular matrix with unit or non-unit main diagonal, A
T
is the transpose of A
.This routine supports only one-based indexing of the input arrays.
Input Parameters
- transa
- Specifies the system of linear equations.Ifortransa='N''n', theny:=alpha*inv(A)*xIfortransa='T''t'or'C'or'c', then,y:=alpha*inv(AT)*x
- m
- Number of rows of the matrixA.
- alpha
- Specifies the scalaralpha.
- matdescra
- Array of six elements, specifies properties of the matrix used for operation. Only first four array elements are used, their possible values are given inTable “Possible Values of the Parameter. Possible combinations of element values of this parameter are given inmatdescra(descra)”Table “Possible Combinations of Element Values of the Parameter.matdescra”
- val
- Two-dimensional array of sizelvalbyndiag, contains non-zero diagonals of the matrixA. Refer tovaluesarray description in Diagonal Storage Scheme for more details.
- lval
- Leading dimension ofval,. Refer tolval≥mlvaldescription in Diagonal Storage Scheme for more details.
- idiag
- Array of lengthndiag, contains the distances between main diagonal and each non-zero diagonals in the matrixA.All elements of this array must be sorted in increasing order.Refer todistancearray description in Diagonal Storage Scheme for more details.
- ndiag
- Specifies the number of non-zero diagonals of the matrixA.
- x
- Array, size at leastm.On entry, the arrayxmust contain the vectorx. The elements are accessed with unit increment.
- y
- Array, size at leastm.On entry, the arrayymust contain the vectory. The elements are accessed with unit increment.
Output Parameters
- y
- Contains solution vectorx.